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Disasters and Disaster Management – Sendai Framework, Floods, Cyclones, etc.

On Tamil Nadu’s financial distress   

Note4Students

From UPSC perspective, the following things are important :

Mains level: Funds released by the Centre for restoration work after natural disasters in the State

Why in the news?

At a June 22 meeting for Union Budget 2024-25, Tamil Nadu’s Finance Minister Thangam Thennarasu requested ₹63,246 crore for Chennai Metro Rail Phase-2, ₹3,000 crore for disaster restoration, and increased unit costs for centrally sponsored schemes.

How are the funds for phase two of the Chennai Metro Rail distributed?

  • Funding Agencies and International Support: Chennai Metro Rail Phase-2 is financed by multiple international agencies, including the Japan International Cooperation Agency (JICA), Asian Development Bank (ADB), Asian Infrastructure Investment Bank (AIIB), and New Development Bank (NDB).
  • State Government Contributions: Up to March 31, 2024, the Tamil Nadu government sanctioned ₹5,400 crore as share capital for the Chennai Metro Rail Limited (CMRL) and ₹12,013.89 crore as subordinate debt, bearing the entire expenditure due to delays in approval from the Union Cabinet Committee on Economic Affairs (CCEA).

Is the Centre stalling the funds for the metro project?

Approval Status:

  • Public Investment Board: The Chennai Metro Rail Project’s Phase-2 was approved by the Public Investment Board (PIB) as a Central sector project under the equity sharing model in August 2021.
  • Union Cabinet Committee on Economic Affairs: The project has been awaiting approval from the Union Cabinet Committee on Economic Affairs (CCEA) since then.

State Government Actions:

  • Foundation Stone: Despite the pending approval, the foundation stone for the phase was laid by Union Home Minister Amit Shah in November 2020 when the AIADMK was in power.
  • Ongoing Expenditure: The Tamil Nadu government continues to fund the project independently, stressing its finances and urging the Centre to sanction the project under the 50:50 equity sharing model as was done for Phase 1.

What about funds released by the Centre for restoration work after natural disasters in the State?

  • Initial Request by Tamil Nadu: Tamil Nadu submitted detailed memoranda to the Union government, seeking approximately ₹37,906 crore for restoration works following two natural disaster spells in 2023.
  • Initial Central Release: The Union government initially released a sum of ₹276 crore for immediate restoration efforts.
  • Additional Approvals: The Union Ministry of Home Affairs (MHA) later approved additional assistance of ₹285.54 crore and ₹397.13 crore for the two disaster spells.
  • Disbursed Amounts: From these approvals, a total of ₹115.49 crore and ₹160.61 crore were disbursed under the National Disaster Response Fund (NDRF).
  • State Disaster Response Fund (SDRF): The Union government’s order also mentioned ₹406.57 crore as the 50% available in the State Disaster Response Fund (SDRF) account of Tamil Nadu as of April 1, 2023.

Way forward: 

  • Metro Rail Project: The Union government should prioritize and expedite the approval process for significant infrastructure projects like the Chennai Metro Rail Phase-2. This can be achieved by setting stricter timelines for the Union Cabinet Committee on Economic Affairs (CCEA) to finalize decisions.
  • Natural Disaster Restoration: The Centre should reassess the current disaster relief funding mechanism to ensure timely and adequate financial support for states hit by natural disasters.

Mains PYQ:

Q Discuss the recent measures initiated in disaster management by the Government of India departing from the earlier reactive approach. (UPSC IAS/2020)

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Judicial Reforms

New criminal laws in effect; amendments soon

Note4Students

From UPSC perspective, the following things are important :

Mains level: Provisions of the Bharatiya Nagrik Suraksha Sanhita (BNSS) that replaces the Code of Criminal Procedure (Cr.PC.)

bns

Why in the news? 

Despite objections from the Opposition-ruled States, three new criminal laws took effect nationwide. Union officials emphasized States’ autonomy to amend certain provisions of the Bharatiya Nagrik Suraksha Sanhita (BNSS)

New Laws Introduced:

  • Bharatiya Nagrik Suraksha Sanhita (BNSS) replaces the Code of Criminal Procedure (CrPC).
  • Bharatiya Nyaya Sanhita (BNS) replaces the Indian Penal Code, 1860.
  • Bharatiya Sakshya (BS) replaces the Indian Evidence Act, 1872.

Procedural and Evidence Reforms:

  • Cognisable Offences: From July 1, cognisable offences will be registered under Section 173 of BNSS instead of Section 154 of CrPC.
  • Audio-Video Recording: Mandatory audio-video recording of search and seizure operations and compulsory forensic examinations for offences with punishments of seven years or more, with electronic submission of evidence to the court.

Some provisions of the Bharatiya Nagrik Suraksha Sanhita (BNSS) that replace the Code of Criminal Procedure (Cr.PC.)

  • Procedure for Arrest and Custody: BNSS prescribes new procedures and conditions for arrest, including bail provisions and custody arrangements.
  • Evidence Handling: Mandatory audio-video recording of search and seizure operations in all criminal cases, ensuring transparency and accountability. Compulsory forensic examinations in cases where the offence attracts a punishment of seven years or more.
  • Electronic Submission: All recordings and forensic evidence must be submitted electronically to the court without delay, enhancing efficiency and reducing paperwork.

About handholding and electronic evidence

  • Training and Support: The Union government has provided comprehensive training and hand-holding for all States to facilitate the transition to the new criminal justice system under BNSS, BNS, and BS.
  • Crime and Criminal Tracking Network Systems (CCTNS): Upgrades to CCTNS enable the filing of e-FIRs and zero FIRs, allowing for remote registration of complaints without the need to visit a police station. CCTNS software has been modified to support FIR registrations in languages other than English and Hindi, ensuring accessibility across linguistic barriers.
  • eSakshya Mobile Application: Under testing, the eSakshya app assists police in recording crime scenes, search operations, and gathering evidence. It facilitates the secure uploading of recorded data to a cloud-based platform hosted by the National Informatics Centre, ensuring data integrity and accessibility.
  • State-Level Preparations: States like Delhi have developed specific applications, such as e-pramaan, to aid in the recording of crime scenes and the generation of digital certificates under the new laws. Some states have distributed necessary equipment like tablets and mobile devices to police stations to ensure compliance with recording and evidence collection requirements.
  • Forensic Capability Timeline: While the BNSS mandates forensic examinations for offences punishable by over seven years imprisonment, states have been given until June 2029 to enhance their forensic capabilities. This includes training police officials in proper evidence collection methods and the use of available resources until full upgrades are completed.

Way Forward: 

  • Continued Collaboration and Feedback Mechanism: Establish a structured feedback mechanism between the Union government and States to address implementation challenges and refine the new criminal laws, ensuring effective collaboration.
  • Enhanced Public Awareness and Training: Conduct extensive public awareness campaigns and provide ongoing training sessions for law enforcement personnel on the use of new technologies and procedures introduced under BNSS, BNS, and BS.

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International Monetary Fund,World Bank,AIIB, ADB and India

IMF | Overlords of the developing world

Note4Students

From UPSC perspective, the following things are important :

Prelims level: Bretton Woods Conference

Mains level: Functions of IMF and Recent Challenges Faced by Developing Countries

Why in the news?

Once again, mass protests in Kenya, where at least 30 people were fatally shot by police, highlight opposition to an IMF-supported finance Bill proposing essential goods tax hikes.

Bretton Woods Conference of 1944

  • The Bretton Woods Conference was held in 1944 in New Hampshire, USA. It established the International Monetary Fund (IMF) and the World Bank.
  • The IMF was designed to aid economic development and promote monetary cooperation and stability globally.
  • Criticism: It has been criticized for reflecting and perpetuating power dynamics favouring Western financial interests, with voting rights disproportionately allocated based on financial contributions rather than equal representation.

Functions of IMF and Recent Challenges Faced by Developing Countries

  • Functions: The IMF aims to provide financial assistance and policy advice to member countries facing balance of payments problems.

Challenges:

  • Austerity Measures: IMF loans often come with conditions such as austerity measures (like tax hikes and spending cuts) that can be unpopular and detrimental to social services and economic stability.
  • Dependency: Many developing countries face criticism for being overly dependent on IMF loans, which come with stringent conditions that may not always align with local priorities.
  • Public Backlash: There is often a public and political backlash against IMF policies perceived as imposing Western economic ideologies without adequate consideration for local contexts.

SAP (Structural Adjustment Programs) and Its Impacts

  • Definition: SAPs are economic policies imposed by the IMF and World Bank on developing countries in exchange for loans.

Impacts:

  • Economic Restructuring: SAPs typically involve privatization, deregulation, and liberalization policies aimed at restructuring national economies towards export-led growth.
  • Social Consequences: They often lead to job losses, reduced public spending on health and education, and increased poverty and inequality.
  • Criticism of SAPs: SAPs have been criticized for exacerbating social inequalities and benefiting Western financial interests over local populations.

Way forward: 

  • Policy Transparency: The IMF could enhance transparency in its loan conditions and negotiations, ensuring that the terms and impacts of loans are clearly communicated to the public and local stakeholders.
  • Local Consultation: Before implementing major policy changes or austerity measures, the IMF could mandate extensive consultation with local governments, civil society organizations, and affected communities to ensure that proposed measures align with local economic priorities and social needs.

Mains PYQ: 

Q The World Bank and the IMF, collectively known as the Bretton Woods Institutions, are the two inter-governmental pillars supporting the structure of the world’s economic and financial order. Superficially, the World Bank and the IMF exhibit many common characteristics, yet their role, functions and mandates are distinctly different. Elucidate. (UPSC IAS/2013)

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Zika Virus Outbreak

India lacks diagnostic tests for emerging infectious diseases

Note4Students

From UPSC perspective, the following things are important :

Prelims level: About Zika Virus

Mains level: India’s Lack of Significant Zika Surveillance and Other Diseases

Why in the news?

The detection of a Zika virus infection in Pune has once again raised concerns regarding India’s readiness to diagnose emerging infectious diseases.

Recent Outbreaks in Various Regions of India

  • Zika Virus: Recent cases of Zika virus in Pune and previous outbreaks in Kerala and Uttar Pradesh highlight sporadic but concerning outbreaks across India.
  • Avian Influenza: Ongoing outbreaks affecting poultry, with occasional human cases reported, indicating challenges in surveillance and testing.
  • Nipah Virus: Multiple outbreaks in Kerala and sporadic cases in West Bengal underscore the recurrent nature of Nipah virus outbreaks in India.

India’s Lack of Significant Zika Surveillance and Other Diseases

  • Limited Diagnostic Capabilities: India faces challenges with the absence of approved diagnostic tests for the Zika virus, relying on clinical symptoms and selective testing, which may lead to underreporting.
  • Surveillance Gaps: There is a notable gap in systematic surveillance systems specifically tailored for Zika and other emerging infectious diseases, hampering early detection and containment efforts.
  • Infrastructure Deficiencies: The country’s diagnostic infrastructure outside major institutes is inadequate, affecting the timely identification and response to outbreaks of diseases like Zika, Nipah, and avian influenza.
  • Dependency on Apex Institutes: Diagnostic facilities are largely concentrated in apex national institutes, limiting accessibility and delaying the implementation of crucial public health measures during outbreaks.

Impacts of Unavailability of Infrastructure

  • Delayed Response: Lack of accessible diagnostics delays the identification and isolation of cases, contact tracing, and implementation of containment measures during outbreaks.
  • Loss of Time: Delays in releasing genomic sequences and validating diagnostic tests impede the rapid development and deployment of effective diagnostics.

Way Forward (Role of ICMR)

  • Enhanced Surveillance: ICMR (Indian Council of Medical Research) should lead efforts to decentralize testing facilities, ensuring availability at district and sub-district levels.
  • Capacity Building: Develop accessible and affordable diagnostic tests for Zika, Nipah, and avian influenza, leveraging lessons from COVID-19 testing infrastructure expansion.
  • Genomic Surveillance: Establish a system for the rapid release of whole genome sequences into public repositories like GISAID to enhance understanding and response capabilities.
  • Collaboration: Foster collaboration with industry and research institutions to streamline diagnostic test approvals and improve preparedness for future outbreaks.

Mains PYQ: 

Q COVID-19 pandemic has caused unprecedented devastation worldwide. However, technological advancements are being availed readily to win over the crisis. Give an account of how technology was sought to aid the management of the pandemic. (UPSC IAS/2020)

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Modern Indian History-Events and Personalities

In news: Santhal Hul of 1855 

Note4Students

From UPSC perspective, the following things are important :

Prelims level: Santhal Hul

Why in the News?

  • The Santhal Revolt of 1855 was a revolt against imperialism led by four brothers, Sidho, Kanho, Chand, and Bhairav Murmu, along with sisters Phulo and Jhano.
    • June 30 marks the 169th anniversary of the beginning of the revolt.

About Santhal Hul

  • The Santhal people revolted against the British East India Company and the Zamindari system, also known as the Santhal Rebellion or Santhal Hul.
  • The rebellion began on June 30, 1855.
  • Martial Law was imposed on November 10, 1855, by the East India Company, lasting until January 3, 1856, when the rebellion was suppressed.

Who are the Santhals?

  • Santhals were agricultural people living in the Rajmahal Hills of Bihar.
  • Ol Chiki (Ol Chemet) is the writing script of Santhals.
  • The British asked them to clear forests for agriculture to increase revenue.
  • Damin-i-Koh (1832) was created as a designated area for Santhals, now known as Santhal Pargana.
  • Over time, the British began exploiting the Santhals, leading to the Santhal Rebellion.

What makes the revolt so unique?

  • Marginalized Indigenous Community: Led by the Santhal tribe, a marginalized indigenous community in mid-19th century India.
  • Agrarian Uprising: Primarily a fight against exploitative land laws, high taxes, and forced labor rather than political or religious issues.
  • Tribal Unity and Guerrilla Tactics: Characterized by a strong sense of tribal unity and guerrilla warfare tactics, making it unique and significant.

Causes of the Santhal Revolt:

  • Permanent Settlement System (1793): Introduced by the British East India Company, giving Zamindars long-lasting property rights.
  • Oppression by Zamindars: Zamindars misused their power to oppress and enslave peasants, leading to resentment.
  • Exploitation and Debt: Santhals faced exploitation through high-interest loans and lost their land and freedom.
  • Violent Suppressions: British police supported Zamindars and moneylenders in evicting Santhals violently.
  • Disruption of Traditional Structures: Traditional social and political structures of the Santhals were disrupted, pushing them into debt and poverty.
  • Economic Hardship: Led to the Santhals revolting against the British and Zamindars to escape their predicament.

About the Santhal Pargana Tenancy Act (1876) and Chhotanagpur Tenancy Act (1908)

  • Santhal Pargana Tenancy Act (1876): Enacted by the British as a result of the Hul.
    • Land Inheritance: Prohibits the transfer of Adivasi lands to non-Adivasis and allows land to be inherited only as per the Act.
    • Self-Governance: Retains the rights of Santhals to self-govern their land.
  • Chhotanagpur Tenancy Act (1908): Result of the Birsa Movement.
    • Land Transfer Restrictions: Allows land transfers within the same caste and geographical areas with District Collector’s approval.
    • Protection of Adivasi and Dalit Land: Restricts the sale of Adivasi and Dalit land but allows transfers within the same community.

PYQ:

[2018] After the Santhal Uprising subsided, what was/were the measure/measures taken by the colonial government?

  1. The territories called `Santhal Parganas’ were created.
  2. It became illegal for a Santhal to transfer land to a non-Santhal.

Select the correct answer using the code given below:

(a) 1 only

(b) 2 only

(c) Both 1 and 2

(d) Neither 1 nor 2

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Intellectual Property Rights in India

What was the tussle over Covaxin IPR?

Note4Students

From UPSC perspective, the following things are important :

Prelims level: Patent process in India, COVAXIN

Why in the News?

  • Bharat Biotech International Limited (BBIL), maker of the indigenous coronavirus vaccine Covaxin, admitted to an “inadvertent error” in patent filings. The error involved failing to include scientists from the Indian Council of Medical Research (ICMR) as co-inventors in the patent filings.

COVAXIN Story

  • BBIL patented the process of making a batch of vaccines from virus strains provided by ICMR-NIV (National Institute of Virology).
  • ICMR-NIV’s role involved extracting viruses, identifying characteristics, conducting tests, and qualifying strains for vaccine development.
    • ICMR funded these clinical trials with ₹35 crore and incurred costs in developing Covaxin.
    • In return, ICMR was to receive 5% of the royalties BBIL earned from the sale of Covaxin.

Vaccine Patents in India 

  • In India, patents, including those for vaccines, are governed by the Patents Act, 1970, and its subsequent amendments.
  • This act aligns with the TRIPS Agreement (Trade-Related Aspects of Intellectual Property Rights) under the World Trade Organization (WTO).

Key Provisions of the Patents Act, 1970:

  • Patentable Inventions:
      • An invention must be novel, involve an inventive step, and be capable of industrial application.
      • Section 3 of the Patents Act outlines what are not considered inventions, which includes methods of treatment, and processes for medicinal, surgical, curative, prophylactic, diagnostic, therapeutic, or other treatments of human beings.
  • India grants both process and product patents:
    • Product Patents: Grant a monopoly over a specific drug.
    • Process Patents: Prevent competitors from using the same sequence of steps to create a similar product.
  • Compulsory Licensing:
    • Under Section 84, compulsory licenses can be issued if the patented invention is not available to the public at a reasonably affordable price, or if the reasonable requirements of the public are not being met.
  • Bolar Provision:
    • Section 107A allows the use of patented inventions, including vaccines, for the purpose of research and development to obtain regulatory approval before the patent expires.

Why was the ICMR not included?

  • Bharat Biotech initially excluded ICMR from patent applications because they viewed the ICMR’s role primarily as providing virus strains and conducting clinical trials, rather than being directly involved in the technical processes of vaccine development.
  • There might have been a miscommunication or oversight regarding the understanding of intellectual property rights and inventorship between BBIL and ICMR initially.

 

PYQ:

[2013] Bringing out the circumstances in 2005 which forced amendment to the section 3(d) in Indian Patent Law, 1970, discuss how it has been utilized by the Supreme Court in its judgement in rejecting Novartis’ patent application for ‘Glivec’. Discuss briefly the pros and cons of the decision. (200 words)

[2014] In a globalized world, Intellectual Property Rights assume significance and are a source of litigation. Broadly distinguish between the terms—Copyrights, Patents and Trade Secrets.

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Water Management – Institutional Reforms, Conservation Efforts, etc.

In news: Shyok River

Note4Students

From UPSC perspective, the following things are important :

Prelims level: Shyok and other tributaries of Indus River

Why in the News?

Five soldiers lost their lives when a tank was drowned away by powerful water currents in the Shyok River during a military training exercise in Ladakh.

About Shyok River

  • The Shyok River is a significant river flowing through the Ladakh region of India and the Gilgit-Baltistan region of Pakistan.
  • It is a tributary of the Indus River and is known for its length and the rugged terrain it traverses.
  • The Shyok River spans approximately 550 kilometres in length.
  • It has a drainage basin covering parts of both India and Pakistan, making it an essential water source for the regions it traverses.

Source and Course:

  • The river originates from the Rimo Glacier, located to the southeast of the Karakoram Pass.
  • It flows northwest to enter the Nubra Valley in Ladakh, a region known for its picturesque landscapes and sand dunes.
  • The river then turns southwest and flows through the disputed region of Gilgit-Baltistan, eventually joins the Indus River near Skardu.

Tributaries:

  • The Shyok River has several tributaries, the most notable being the Nubra River, which flows through the Nubra Valley.
  • Other significant tributaries include the Saltoro River, originating from the Siachen Glacier region.

Cultural and Historical Significance:

  • The river flows through that have been part of ancient trade routes between Central Asia and South Asia.
  • The Nubra Valley, through which the Shyok flows, is also known for its ancient monasteries and the Bactrian camels, which were used for trade along the Silk Route.

Geographical significance of Shyok River 

  • Strategic Location: The Shyok River flows through the Ladakh region of India and serves as a vital geographical feature due to its proximity to the Line of Actual Control (LAC) between India and China. Its strategic location influences military deployments and infrastructure development in the region, particularly in the context of border disputes and security concerns.
  • Glacial Melt and Water Resources: Originating from the Rimo Glacier and fed by numerous tributaries, the Shyok River contributes significantly to the water resources of the region. Its flow is crucial for agriculture, hydroelectric power generation, and sustenance of local ecosystems, impacting the livelihoods and socio-economic activities of communities along its banks.

PYQ:

[2020] Siachen Glacier is situated to the

(a) East of Aksai Chin

(b) East of Leh

(c) North of Gilgit

(d) North of Nubra Valley

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Festivals, Dances, Theatre, Literature, Art in News

Nouka Baich: Boat Race festival of Bengal   

Note4Students

From UPSC perspective, the following things are important :

Prelims level: Nouka Baich

Why in the News?

With the southwest monsoon gradually setting in, Nouka Baich boat races will soon commence in West Bengal and Bangladesh.

About Nouka Baich

  • Nouka Baich is the traditional boat race of Bengal.
  • It is predominantly held in the rural pockets of West Bengal, including Murshidabad, Nadia, North 24 Parganas, and South 24 Parganas.
  • Historically male-dominated, recent years have seen increasing participation by women.
  • Timing and Duration:
    • Monsoon Season: The races commence with the onset of the south-west monsoon, usually starting in the middle of the rainy season.
    • Extended Period: The events continue until September, with some races extending into October and November, depending on the region.

Types of Boats Used:

  • Diverse Fleet: Unlike Kerala’s boat races, which typically feature a single type of boat, Bengal’s races use various traditional boats.
  • Common Boat Types: Chhip, Kaile Bachhari, Chande Bachhari, Chitoi, Sorpi, and Sorengi are commonly used in the races.
  • Unique Features: Each boat type has unique design features and historical significance, with some boats like the Sorengi being over 90 feet long and designed to mimic natural forms.

Similar festivals celebrated in other parts that highlight cultural similarities in India:

Location Occasion Highlights
Nehru Trophy Boat Race Punnamada Lake, Alappuzha, Kerala Second Saturday of August Named after Jawaharlal Nehru; features snake boats (Chundan Vallams) accommodating over 100 rowers.
Champakulam Moolam Boat Race Pampa River, Alappuzha, Kerala June or July One of the oldest boat races, commemorates the installation of Lord Krishna’s idol at Ambalappuzha Temple.
Aranmula Uthrattadi Vallamkali Pampa River, Aranmula, Kerala Onam (August or September) Features Palliyodams (large snake boats); significant for the Parthasarathy Temple.
Payippad Jalotsavam Payippad Lake, Alappuzha, Kerala Onam (August or September) Celebrates the installation of deity at Subramanya Swamy Temple; features snake boats and canoes.
Indira Gandhi Boat Race Ernakulam, Kochi, Kerala Last week of December Part of Cochin Carnival; attracts tourists, named after Indira Gandhi.
Pongal Boat Race Bhuvanagiri, Tamil Nadu Pongal festival (January) Vibrant cultural displays; local fishermen participate.
Hiyang Tannaba Manipur Lai Haraoba festival Traditional boat race with long narrow boats, reflecting the Meitei community’s traditions.
Sithargal Boat Race Chennai, Tamil Nadu Pongal festival Highlights the maritime culture of the region; attracts numerous participants and spectators.

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Innovations in Sciences, IT, Computers, Robotics and Nanotechnology

Activated Carbon Production from Coconut Husks for Supercapacitors

Note4Students

From UPSC perspective, the following things are important :

Prelims level: Activated Carbon, Supercapacitors

Why in the News?

Researchers at Government College for Women, Thiruvananthapuram, have developed a way to make activated carbon from coconut husks, which are a common leftover from farming in Kerala. This activated carbon is well-suited for making supercapacitors.

Back2Basics: Supercapacitors

  • Supercapacitors, also known as ultra-capacitors or electrochemical capacitors, are energy storage devices that bridge the gap between conventional capacitors and batteries.
  • They store energy through the electrostatic separation of charges rather than through chemical reactions as in batteries.
  • This allows supercapacitors to charge and discharge much faster than batteries.

Key Characteristics:

  • High Power Density: Supercapacitors can deliver and accept charge much more rapidly than batteries.
  • Long Cycle Life: They can endure millions of charge-discharge cycles without significant degradation.
  • Wide Operating Temperature Range: Supercapacitors perform well in a broad range of temperatures, making them suitable for various applications.

Structure and Components:

  • Electrodes: Made of materials like activated carbon, carbon aerogels, or graphene, which have high surface areas.
  • Electrolyte: The medium that allows ionic conductivity between the electrodes, typically a liquid or gel.
  • Separator: A porous membrane that prevents electrical contact between the electrodes but allows ionic movement.

What is Activated Carbon?

  • Activated Carbon, also known as activated charcoal, is a highly porous form of carbon.
  • It is processed to have small, low-volume pores with increased surface area available for adsorption or chemical reactions.
  • It is widely used for purification, decontamination, and as a filtration medium.
  • Key Characteristics:
    • High Surface Area: Due to its extensive network of pores, activated carbon has a very high surface area, typically ranging from 500 to 1500 m²/g.
    • Porosity: The structure includes micropores, mesopores, and macropores, allowing it to adsorb a variety of molecules.

How is it produced?

  • Activated carbon is produced from carbonaceous source materials such as coconut shells, peat, wood, coir, lignite, coal, and petroleum pitch.
  • The production involves two main steps:
  1. Carbonization: The raw material is subjected to high temperatures (600-900°C) in an inert atmosphere (usually nitrogen or argon) to remove volatile components.
  2. Activation/Oxidation: The carbonized material is treated with oxidizing agents (such as steam or carbon dioxide) at high temperatures (800-1000°C) to develop a porous structure.

Types:

  • Powdered Activated Carbon (PAC): Finely ground carbon particles primarily used in liquid phase applications.
  • Granular Activated Carbon (GAC): Larger particles used in both liquid and gas phase applications, such as water and air filtration.
  • Extruded Activated Carbon (EAC): Cylindrical pellets used mainly for gas phase applications due to their low pressure drop and high mechanical strength.
  • Impregnated Activated Carbon: Activated carbon treated with chemicals to enhance its adsorption capacity for specific contaminants.

Applications:

  • Water Treatment: Removes contaminants like chlorine, odors, and organic compounds from drinking water.
  • Air Purification: Adsorbs volatile organic compounds (VOCs), odors, and airborne pollutants.
  • Medical Uses: Used in poisoning cases to absorb toxins in the gastrointestinal tract.
  • Industrial Processes: Utilized in the recovery of solvents, purification of gases, and in gold purification.
  • Food and Beverage: Helps in decolorization and purification processes in sugar, wine, and juice production.

About Coconut Husk-Derived Activated Carbon

  • Coconut husk-derived activated carbon is a sustainable and efficient green solution for high-performance supercapacitors.
  • This material is readily available, low-cost, and eco-friendly.
  • It was produced by Microwave-Assisted Method designed at the Centralised Common Instrumentation Facility (CCIF) at the college.

Importance of Supercapacitors

  • Energy Storage: Supercapacitors have significantly higher capacitance and energy storage capacity compared to conventional capacitors.
  • Search for Ideal Material: Finding the ideal supercapacitor electrode material has been a significant challenge in sustainable energy storage solutions.

Research Findings:

  • Efficiency: Prototype supercapacitors made from coconut husk-derived activated carbon are four times more efficient than existing supercapacitors.
  • Cost-Effective and Efficient: Activated carbon produced using this technology is inexpensive and exhibits exceptional supercapacitor capability.

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