Book Chapters
Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28507
Browse
4 results
Search Results
Item Homogeneous photocatalysts immobilized on polymeric supports: Environmental and chemical synthesis applications(Elsevier, 2021) Prekodravac, J.; Nair, V.; Giannakoudakis, D.A.; Hsu, S.H.-Y.; Colmenares, J.C.The interest in homogeneous photocatalysis arises from the high activity and selectivity advantages of controlled photochemical transformations such as synthesis of chemical/pharmaceutical products or complete degradation/mineralization of hazardous compounds. However, the major drawback of homogeneous photocatalytic reactions lies in the separation and recovery of the photocatalyst after the reaction, necessary to make the photocatalytic process eco-friendly. Immobilization of homogeneous photocatalysts on different supports is considered to be a viable method to increase the retainability and reusability of the photocatalyst simultaneously. This chapter aims to provide an in-depth information related to the immobilization of various homogeneous photocatalysts on well-known synthetic and natural polymers. Detailed information related to the potential environmental and chemical synthesis applications of immobilized homogeneous photocatalysts are also discussed. Finally, this chapter concludes with a new direction in emerging technologies for developing better supported photocatalysts. © 2021 Elsevier Inc. All rights reserved.Item Biocatalytic Remediation of Industrial Pollutants(Springer Science and Business Media Deutschland GmbH, 2023) Pallavi, P.; Manikandan, S.K.; Nair, V.The release of an significant amount of pollutants from various industrial activities pose a serious threat to environmental sustainability and ecological integrity. Toxic pollutants, such as dyes, pesticides, metal ions, plastics, and antibiotics, can cause detrimental diseases to diverse living beings in their ecosystems. Biocatalytic remediation is one efficient method of removing toxic industrial pollutants by applying microorganisms or enzymes. Microorganisms in the environment typically produce a variety of enzymes to immobilize and degrade contaminants by using them as a substrate for growth and development. Biocatalytic remediation has attracted enormous interest worldwide due to its affordability and eco-friendliness. The use of microbial enzymes and microorganisms, especially immobilized biocatalysts, has been established as a flexible approach for the sustainable alleviation of industrial pollutants, in contrast to physical and chemical methods. This chapter presents and discusses recent scientific and technological advancements related to biocatalytic remediation of industrial pollutants. It also considers different biocatalysts and novel methodologies to mitigate various pollutants. This article also examines current trends, challenges, and directions for efficiently removing pollutant using biocatalysis method. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.Item Role of Lignocellulosic Waste in Biochar Production for Adsorptive Removal of Pollutants from Wastewater(Springer Nature, 2023) Rao, K.A.; Nair, V.; Divyashri, G.; Murthy, T.P.K.; Dey, P.; Samrat, K.; Chandraprabha, M.N.; Hari Krishna, R.H.Biochar is a carbon-rich material obtained through the thermal decomposition of lignocellulosic percussor in the absence of oxygen. Biochar is widely utilized as a sustainable and potential adsorbent for the removal of pollutants owing to its unique physicochemical properties. This chapter aims to review the importance of utilizing lignocellulosic waste in the development of biochar-based adsorbents. The influence of process parameters that affect the properties of biochar is also provided. The comprehensive review of modification methods of biochar properties is explained along with adsorption characteristics, and sorption abilities of biochar in the amputation of organic and inorganic pollutants. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2023.Item Bioprocesses for Sustainable Management of Mine Waste in Contaminated Environmental Matrices(CRC Press, 2024) Nair, V.; Singh, A.; Gowda, N.K.Mining activities release heavy metals into the soil, which causes pollution, habitat loss, soil erosion, acid mine drainage, and serious threats to human health. Mining waste also includes waste rocks and slag, which accumulate toxins and have tailing effects. In recent years the accelerated growth in population and industrial production has made it impossible to restrict mining activities. Mining waste management needs to be redefined to become more sustainable. The use of conventional remediation methods requires use of expensive equipment and complex techniques and can led to the formation of noxious secondary pollutants. Continual efforts to develop biological treatment methods offer promising results using various alternatives like bacteria-assisted degradation, phytoremediation, phycoremediation, and modifications in the bioreactor system for the removal of pollutants from mining-contaminated sites. These methods have an innate ability to bioaccumulate the leached metals from the surroundings and build rich phytomass, which can be used for biofuel production. The zero-waste concept has been receiving a lot of attention in recent years since it helps in not only resolving the problem of mining waste accumulation but also reducing the demand for fossil fuels and their derivatives. This chapter focusses on biotechnological methods that can be applied to efficiently extract and treat mining waste from different industries in order to harness bioenergy from its by-products. © 2024 selection and editorial matter, Alok Prasad Das, Eric D. van Hullebusch, and Ata Akçil; individual chapters, the contributors.