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Sunita Varjani

Bio: Sunita Varjani is an academic researcher from École Polytechnique Fédérale de Lausanne. The author has contributed to research in topics: Medicine & Environmental science. The author has an hindex of 31, co-authored 211 publications receiving 4086 citations. Previous affiliations of Sunita Varjani include Gujarat National Law University & Kadi Sarva Vishwavidyalaya.

Papers published on a yearly basis

Papers
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Journal ArticleDOI
TL;DR: An overview about bioremediation for petroleum hydrocarbon pollutants and explanation about hydrocarbon metabolism in microorganisms are provided with a special focus on new insights obtained during past couple of years.

794 citations

Journal ArticleDOI
TL;DR: In this article, a review selectively examines and provides a critical view on bioavailability of the substrates, microorganisms in petroleum hydrocarbon pollutants degradation and the molecular techniques for their characterization, degradation mechanisms under aerobic and anaerobic conditions, commercially available bioremediation agents and factors affecting biodegradation of these pollutants.

331 citations

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TL;DR: An overview of oil recovery using biosurfactant from Pseudomonas aeruginosa is given and factors affecting rhamnolipid production are described, which gives an overview of surfactant production in ecofriendly and cost effective manner.

289 citations

Journal ArticleDOI
TL;DR: In this article, the most advanced and state-of-art technical and scientific developments about the treatment of dye industry wastewater, which include advanced oxidation process, membrane filtration technique, microbial technologies, bio-electrochemical degradation, photocatalytic degradation, etc.
Abstract: Rapid industrialization has provided comforts to mankind but has also impacted the environment harmfully. There has been severe increase in the pollution due to several industries, in particular due to dye industry, which generate huge quantities of wastewater containing hazardous chemicals. Although tremendous developments have taken place for the treatment and management of such wastewater through chemical or biological processes, there is an emerging shift in the approach, with focus shifting on resource recovery from such wastewater and also their management in sustainable manner. This review article aims to present and discuss the most advanced and state-of-art technical and scientific developments about the treatment of dye industry wastewater, which include advanced oxidation process, membrane filtration technique, microbial technologies, bio-electrochemical degradation, photocatalytic degradation, etc. Among these technologies, microbial degradation seems highly promising for resource recovery and sustainability and has been discussed in detail as a promising approach. This paper also covers the challenges and future perspectives in this field.

277 citations

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TL;DR: There is an upsurge enthusiasm for utilizing biochar produced from waste-biomass in different fields, to address the most important ecological issues as mentioned in this paper, and a review is focused on an overview of remediating harmful contaminants using biochar.

263 citations


Cited by
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Journal Article
TL;DR: This book by a teacher of statistics (as well as a consultant for "experimenters") is a comprehensive study of the philosophical background for the statistical design of experiment.
Abstract: THE DESIGN AND ANALYSIS OF EXPERIMENTS. By Oscar Kempthorne. New York, John Wiley and Sons, Inc., 1952. 631 pp. $8.50. This book by a teacher of statistics (as well as a consultant for \"experimenters\") is a comprehensive study of the philosophical background for the statistical design of experiment. It is necessary to have some facility with algebraic notation and manipulation to be able to use the volume intelligently. The problems are presented from the theoretical point of view, without such practical examples as would be helpful for those not acquainted with mathematics. The mathematical justification for the techniques is given. As a somewhat advanced treatment of the design and analysis of experiments, this volume will be interesting and helpful for many who approach statistics theoretically as well as practically. With emphasis on the \"why,\" and with description given broadly, the author relates the subject matter to the general theory of statistics and to the general problem of experimental inference. MARGARET J. ROBERTSON

13,333 citations

Journal ArticleDOI
TL;DR: An overview about bioremediation for petroleum hydrocarbon pollutants and explanation about hydrocarbon metabolism in microorganisms are provided with a special focus on new insights obtained during past couple of years.

794 citations

Journal ArticleDOI
TL;DR: In this article, a review of different treatment methods for removing heavy metals from the aquatic environment with a different degree of success has been presented, and the distinctive sorts of treatment strategies for the removal of the toxic metals from wastewater had been explained.

742 citations

Journal ArticleDOI
TL;DR: In this paper, a prospective outlook on how the disruption caused by COVID-19 can act as a catalyst for short-term and long-term changes in plastic waste management practices throughout the world is given.
Abstract: The COVID-19 pandemic has had growing environmental consequences related to plastic use and follow-up waste, but more urgent health issues have far overshadowed the potential impacts. This paper gives a prospective outlook on how the disruption caused by COVID-19 can act as a catalyst for short-term and long-term changes in plastic waste management practices throughout the world. The impact of the pandemic and epidemic following through the life cycles of various plastic products, particularly those needed for personal protection and healthcare, is assessed. The energy and environmental footprints of these product systems have increased rapidly in response to the surge in the number of COVID-19 cases worldwide, while critical hazardous waste management issues are emerging due to the need to ensure destruction of residual pathogens in household and medical waste. The concept of Plastic Waste Footprint (PWF) is proposed to capture the environmental footprint of a plastic product throughout its entire life cycle. Emerging challenges in waste management during and after the pandemic are discussed from the perspective of novel research and environmental policies. The sudden shift in waste composition and quantity highlights the need for a dynamically reponsive waste management system. Six future research directions are suggested to mitigate the potential impacts of the pandemic on waste management systems.

602 citations

Journal ArticleDOI
TL;DR: In this paper, a variety of parameters of TiO2-based photocatalysts need to be studied: substrate, light intensity, dopant, particle size, structure, etc.

532 citations