Author
Ashitha Gopinath
Bio: Ashitha Gopinath is an academic researcher from National Environmental Engineering Research Institute. The author has contributed to research in topics: Sewage treatment & Wastewater. The author has an hindex of 5, co-authored 8 publications receiving 152 citations.
Topics: Sewage treatment, Wastewater, Chemistry, Biochar, Effluent
Papers
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TL;DR: In this paper, a comparative performance of combined sulfate radical based EAOP+EC and EC+EAOP processes for the treatment of real field dyeing wastewater was presented, where Pt/Ti plate is used as anode and iron plate was used as cathode.
135 citations
TL;DR: In this paper, the authors provide insights into the production, modification and usage of sewage sludge (SS) derived biochar, including the production yield, characteristic features such as physical, chemical, electrochemical and morphological aspects, and impact on contaminant removal through adsorption, catalytic and electrochemical processes.
104 citations
TL;DR: A review of biochar and biochar-based catalysts for advanced oxidation processes is presented in this paper, focusing on the mechanisms involved in the activation of hydrogen peroxide, persulfate and peroxymonosulfate as well as its sequence towards degradation process.
104 citations
TL;DR: In this paper, a review of the versatility of various heterogeneous Fenton catalysts to degrade a wide variety of emerging contaminants in a sustainable manner has been presented, showing that more than 80% of degradation were achieved for almost all the classes of contaminants.
97 citations
TL;DR: In this paper, aerated electrocoagulation combined with phytoremediation treatment was conducted in dairy industry wastewater and the results showed that both treated and untreated wastewater favored bacterial growth.
94 citations
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TL;DR: In this paper, the state of the art in Sulfate radical-based advanced Oxidation processes (SR-AOPs) application for industrial wastewater treatment is presented, and an integrated presentation of the dominant pathways towards IWW decontamination is discussed.
609 citations
TL;DR: In this paper , the authors highlight biochar production technologies, characteristics of biochar, and the latest advancements in immobilizing and eliminating heavy metal ions and organic pollutants in soil and water.
Abstract: Abstract Biochar shows significant potential to serve as a globally applicable material to remediate water and soil owing to the extensive availability of feedstocks and conducive physio-chemical surface characteristics. This review aims to highlight biochar production technologies, characteristics of biochar, and the latest advancements in immobilizing and eliminating heavy metal ions and organic pollutants in soil and water. Pyrolysis temperature, heat transfer rate, residence time, and type of feedstock are critical influential parameters. Biochar’s efficacy in managing contaminants relies on the pore size distribution, surface groups, and ion-exchange capacity. The molecular composition and physical architecture of biochar may be crucial when practically applied to water and soil. In general, biochar produced at relatively high pyrolysis temperatures can effectively manage organic pollutants via increasing surface area, hydrophobicity and microporosity. Biochar generated at lower temperatures is deemed to be more suitable for removing polar organic and inorganic pollutants through oxygen-containing functional groups, precipitation and electrostatic attraction. This review also presents the existing obstacles and future research direction related to biochar-based materials in immobilizing organic contaminants and heavy metal ions in effluents and soil. Graphical Abstract
184 citations
TL;DR: In this paper, the authors discussed the advance of the peroxymonosulfate (PMS) activation by biochar-based catalysts and provided new ideas for the application of biochar and broaden the ways for the removal of organic contaminants.
182 citations
TL;DR: In this paper, a review of the role of biochar in catalysis is presented, which concludes that the oxygen-containing groups and PFRs on original biochar could favor the catalytic process through generating radicals, and the loaded metal would grow as the prominent active site.
121 citations
TL;DR: A review of the sources, classification, fate and transport of emerging contaminants and the recent researches and advancements for their treatment/elimination will help in selecting the best available technology for specific contaminant under particular conditions.
107 citations