Current Happenings ENVS News

Dr Debajyoti Kundu, Assistant Professor in the Department of Environmental Science and Engineering, has published a research paper titled “Synthesis, delineation and technological advancements of algae biochar for sustainable remediation of the emerging pollutants from wastewater – A Review” in the esteemed Q1 journal “Environmental Research”, which has an impact factor of 8.3.

Dr Debajyoti’s research focuses on using algae biochar, which is particularly effective at cleaning polluted water. The study reviews how this biochar is made and improved and how it can effectively remove harmful substances from wastewater. This process is sustainable and environmentally friendly, offering a promising solution to water pollution.

Abstract

The study examines the synthesis, technological advancements, and applications of algae biochar for the sustainable remediation of emerging pollutants from wastewater. It highlights the unique properties of algae biochar, including its high surface area, pore volume, and adsorption capacity, which make it an effective medium for removing inorganic and organic contaminants from wastewater. The paper discusses various methods for producing algae biochar, such as pyrolysis, gasification, and torrefaction, and explores chemical and structural modifications to enhance its pollutant removal efficiency.

Practical Implementation /Social Implications of the Research

The practical implementation of this research involves using algae-derived biochar in wastewater treatment plants to remove harmful pollutants. This can lead to cleaner water, reduced environmental pollution, and improved public health. The process is also sustainable and cost-effective, contributing to environmental conservation and resource efficiency.

Collaborations

This research is a collaborative effort among various experts from institutions such as the University of Calcutta, Babasaheb Bhimrao Ambedkar University, Koneru Lakshmaiah Education Foundation, Graphic Era Deemed to be University, Indian Institute of Technology Kharagpur, Ranchi University, King Abdulaziz University, Incheon National University, Korea Aerospace University, and B.S. Abdur Rahman Crescent Institute of Science and Technology.

Future Research Plans

Dr Debajyoti’s future research projects include exploring advanced modification techniques for algae biochar to further enhance its pollutant removal capabilities, investigating its application in different types of wastewater, and developing large-scale production methods. Additionally, there is an interest in studying the long-term environmental impacts and economic viability of using algae biochar in wastewater treatment.

Know more

The water crisis in India, especially in the coastal regions, has worsened alarmingly, coercing environmentalists and researchers to critically study the reason behind this phenomenon. The Sundarbans region faces a scarcity of drinking water in terms of quality and quantity due to various reasons. Dr Kousik Das, Asst. Professor, Department of Environmental Science and Engineering, Dr Harish Puppala, Asst Professor, Department of Civil Engineering and Mr Mijanur Mondal, Research Scholar from the Department of Environmental Science and Engineering has conducted a groundbreaking study on the increased salinization of water due to human activities. The research trio has published a paper titled “Understanding the susceptibility of groundwater of Sundarbans with hydroclimatic variability and anthropogenic influences” in the prestigious Q1 journal Groundwater for Sustainable Development, which has an impact factor of 5.9, critically analysing the numerous factors that affect the quality of drinking water in the Sundarbans region.

Abstract

Coastal aquifers worldwide are experiencing increased salinisation due to climate change and human activities. Sundarbans, in India, is one such area where this phenomenon is noticed at an unprecedented rate, making drinking water unpotable for consumption. Existing studies lack a comprehensive analysis of the underlying causes. This study conducts a systematic literature review to identify drivers of groundwater salinisation, examining climate change parameters such as rainfall patterns, sea level rise, El Niño-Southern Oscillation, and tropical cyclones. Significant groundwater level declines from 1996 to 2017 are primarily attributed to variations in the Indian Ocean Dipole and El Niño Southern Oscillation, affecting rainfall and recharge rates. During tropical cyclones, groundwater levels rise rapidly, and quality is sensitive to El Niño Southern Oscillation. Rising sea levels, changing rainfall, and increasing population density worsen salinisation. Shallow aquifers have high salinity, whereas deep aquifers exceed permissible limits. This underscores the urgent need to address drinking water scarcity and potential migration resulting from complex interactions between climate, population, and groundwater management.

Social Implications of the Research

• Water Quality Monitoring: Implementing regular monitoring of salinity levels in groundwater to ensure compliance with safety standards.
• Community Awareness Programmes: Conducting educational campaigns to inform local communities about the risks of high salinity levels in drinking water and promoting the judicious use of water sources so that unscientific abstraction can be reduced.
• Policy Development: Formulating policies at the local and national levels to regulate salinity levels in drinking water and ensure public health protection.
• Infrastructure Improvement: Investing in water treatment facilities or technologies to remove high salt levels from groundwater sources. Alternative sources and rainwater harvesting can be taken into consideration.

Collaborations – IIT Kharagpur, India

The research team plans to work on Groundwater vulnerability modelling using AI/ML in Sundarbans, India next. The team has begun collecting primary data using questionnaire surveys and interviews to throw light on socio-economic conditions and to understand the core reasons for the water crisis and health and psychological issues due to water unavailability, especially during extreme events like cyclones.

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