Current Happenings ENVS News

Tropical forests are the breathing lungs of the world that work as a collective to stabilise climate by absorbing vast amounts of carbon dioxide. Covering over 12% of Earth’s total land surface. It functions as a harbour for evolution and supplying prerequisite rainfall for healthy vegetation. Recent global climate changes have catalysed drastic effects on the tropical forests and the healthy functioning of the same. A critical understanding of the present state of forest ecosystems is crucial for undertaking necessary measures to prevent further degradation.

Recently, the project entitled Assessment and modelling of carbon and nitrogen dynamics in tropical forests of Eastern Ghats, Andhra Pradesh in response to climate change, has been sanctioned to Dr Javid Ahmad D, Assistant Professor, Department of Environmental Science by DST – SERB (Science and Engineering Research Board), Govt of India, with a total outlay of Rs. 28.54 lakhs. Dr Javid Ahmad D is the principal investigator of the project.

A complete dataset on long-term dynamics in vegetation, the C and N generated for different tropical forest types in the Eastern Ghats landscape would serve as a baseline data for forest managers and policy-makers. The project aims to gain insight on the response of these tropical forests to changing global climate in relation to multiple factors (elevated CO2, increased temperatures and altered precipitation).

The Department of Environmental Science is glad to announce that Assistant Professor Dr Pankaj Pathak and her PhD Scholar Mr Gopa Nandikesh have published an article titled “Occurrence, environmental risks and biological remediation mechanisms of Triclosan in wastewaters: Challenges and perspectives” in the Journal of Water Process Engineering having an Impact Factor 7.34. The paper was published in collaboration with Dr Lakhveer Singh, Sardar Patel University, Himachal Pradesh.

The paper makes a comprehensive understanding of the disadvantages and consequences associated with the excessive use of Triclosan (TCS), an anti-microbial agent widely used in pharmaceutical and personal care products (PPCPs). The article also suggests various ways to achieve the bioremediation of Triclosan using microbial degraders and the different challenges associated with such practices.

The extensive use of TCS in PPCPs has increased over the past few decades, and its sizeable production and consumption are causing adverse effects on the environment and humans. TCS has been made into the list of emerging micropollutants (EMPs) due to its omnipresence in water resources and even in biological samples such as urine and breast milk. Therefore, it is imperative not only to understand the current status of TCS pollution but their occurrence, exposure routes, and environmental risks to identify remediation technologies for mitigating TCS.

Their research targets to provide cumulative data on the abundance of emerging TCS in water resources and its associated health burdens simultaneously. It is identified that TCS remediation can be achieved through advanced physical and chemical methods such as enzyme oxidation and ozonation. However, there are drawbacks such as high energy consumption and the formation of toxic by-products.

The article endeavours to provide an in-depth understanding of the biological remediation of TCS by microbial degraders as well as its superiority over other remediation techniques. Insights into the various microbial communities such as bacteria, algae, and fungi and their unique bioremediation mechanisms are comprehensively summarised. Moreover, challenges associated with existing bioremediation methods and future perspectives are also discussed in the present work.