Environmental Science And Technology - Research Publications

Permanent URI for this collectionhttps://kr.cup.edu.in/handle/32116/88

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Author: search.filters.author.Vishwakarma, Gajendra Singh

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    Self-assembled nanomaterials for cleansing and bioremediation
    (Elsevier, 2022-08-12T00:00:00) Kumar, Ravishankar; Vaidh, Sachin; Parekh, Dharni; Vasoya, Nikita; Shah, Milika; Vishwakarma, Gajendra Singh
    The development of sustainable and effective solutions for Environmental remediation and cleansing is one of the areas of research and development nowadays. In this regard, conventional treatment systems fail to eradicate aquatic pathogens, toxic metal ions, and industrial waste. The research and development in this area have given rise to a new class of process that is based on self-assemble Nanomaterials (NMs). This Chapter discusses many of those self-assembled NMs like metal-based metal-free, biopolymer-based, and others that have been studied for water and wastewater purification and treatment and removal of various pollutants like heavy metals, dyes, pesticides. It also discusses the design and performance of the different types of nano assemblies that have been utilized in this concern. In addition to that, the chapter also focuses on the different process parameters such as temperature, pH, catalyst-loading, and reaction time that need to attain the maximum efficiency. � 2022 Elsevier Inc. All rights reserved.
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    Arsenic Induced Alteration in Macromolecule Concentration and Antioxidant System in Two Improved Rice Varieties
    (Tamil Nadu Scientific Research Organization (TNSRO), 2016) Kamboj, Ritu; Vishwakarma, Gajendra Singh; Sharma, Shilpa; Mittal, Sunil
    Arsenic contamination of rice has been highlighted as major issue throughout the world as it is a staple food for millions. The aim of study was to analyze the effect of different concentration of arsenic on the germination, physiology, macromolecules concentration and antioxidant enzymes in improved varieties of rice. In vitro study indicates that the lower concentration of arsenate had a stimulating effect on germination, chlorophyll content as well as respiratory content while an inhibitory effect at higher concentration. Roots were more affected than shoots. Further, the content of macromolecules (carbohydrate and protein) was elevated while the activities of their hydrolyzing enzymes (α, β amylase and protease) were declined on arsenic stress. The significant elevation in the activity of superoxide dismutase and peroxidase enzymes also proved the generation of reactive oxygen species due to the arsenic toxicity