Browsing by Author "Syed Saquib"

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Emerging pollutants in water and human health
(Elsevier, 2021) Syed Saquib; Amit Kumar Yadav; Kalp Bhusan Prajapati
Continuous increase of human population and resulting urbanization and industrialization leads to the contamination of water bodies. Water is one of the most important vivacious cores of all the living beings without which life could not be expected. But due to the anthropogenic sources of water pollution, that is, discharge of untreated industrial and sewage wastewater, runoff from agricultural fields, agrochemicals, and so forth, continuous increases in the concentration of emerging water pollutants has been observed. Emerging water pollutants are the compounds or their by-products, which are not generally present nor monitored but have the probability to enter the aquatic bodies causing adverse effects to human health and the ecosystem. Pesticides, detergents, flame retardants, personal care products, and pharmaceuticals are some of the synthetic-occurring biochemical entities emerging as pollutants. With the increase in pollutants, the number of these synthetic chemicals is also enhanced. These emerging pollutants-primary pollutants or micro-pollutants-refer to those for which there are no standards and monitoring if present in discharged wastewater. The lack of scientific data on the fate and behavior of emerging pollutants in the wastewater also poses a risk to ecological and human health. This chapter discusses the emerging pollutants and health effects linked to these chemicals pharmaceuticals, hormone, toxins, endocrine disruptors, and so forth. © 2021 Elsevier Inc. All rights reserved.
Environmental, legal, health, and safety issue of nanocellulose
(Elsevier, 2022) Gurudatta Singh; Syed Saquib; Ankita Gupta; Swati
Excessive anthropogenic needs of various useful yet environmentally harmful materials such as plastic put tremendous pressure on the planet, eventually causing multiple environmental and health impacts. This chapter aims to elucidate and focus onapossible emerging solution-nanocellulose-to curb all such environmental problems. In recent years nanocellulose-based composites have attracted significant scientific community and industrial innovations because of their biocompatible, biodegradable, and high physicochemical properties. Nanocellulose is usually obtained from plants, that is, cellulose nanofibrils and nanocellulosic crystals. Another type of composite is bacterial in origin and known as bacterial cellulose. These materials are nanoscale in size usually ranges from less than 10 to 100 nm in length. Such smaller size and certain physicochemical properties, including mechanical, optical, and thermal properties, make them ideal for various products. Nanocellulose is reported to be extensively used in biomedical devices, biosensors, water pollutant removal, and paper and packaging industries. Despite many positive aspects, the health/safety, environmental, and certain regulatory issues related to nanocellulose production and usage are still debatable among scientists and lawmakers. However, still extensive research is needed to formulateasafe, sustainable, and efficient production and usage of nanocellulose-based innovative materials to obtain an overall sustainable system. © 2022 Elsevier Inc. All rights reserved.