Department Of Environmental Science And Technology

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Author: search.filters.author.Yadav, NeelamSubject: search.filters.subject.Nanotechnology

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    Recent advances in nanotechnology for the improvement of conventional agricultural systems: A review
    (Elsevier B.V., 2023-05-18T00:00:00) Yadav, Neelam; Garg, Vinod Kumar; Chhillar, Anil Kumar; Rana, Jogender Singh
    Agriculture provides food and raw materials for the construction, energy, textile and pharmaceutical industries. Recently, agriculture is facing several concerns including climate change, soil degradation, decreasing land holding, urbanization, unsustainable use of natural resources, excessive use of agrochemicals, biodiversity loss, air pollution etc. are some of alarming issues which demand immediate interventions. Conventional agricultural practices could not handle these challenges as they are complex, labour intensive, time-consuming, less efficient, large requirements of crop nutrients and non-targeted. Furthermore, the inefficient use of agrochemicals poses a serious threat to the ecosystem. Therefore, scientists, farmers and policymakers are constantly searching for new techniques to combat existing challenges. Nanotechnology is emerging as the new savior of sustainable agriculture. Besides precision farming, nanosensors have been employed for the detection of crop pathogens and chemically harmful analytes in agri-fields. Moreover, nanorobotics and nano-barcodes have also shown a profound impact on agriculture practices to enhance the yield of agriculture. Further, tremendous applications of nanotools in agriculture are extensively implicated in bioimaging, sensing, photocatalysis and agrochemicals delivery. This review comprehensively discusses diverse tremendous applications of nanotechnology in overcoming the challenges of conventional agronomic practices and future prospects of nanotechnology in agriculture. � 2023 The Authors
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    Detection and remediation of pollutants to maintain ecosustainability employing nanotechnology: A review
    (Elsevier Ltd, 2021-05-17T00:00:00) Yadav, Neelam; Garg, Vinod Kumar; Chhillar, Anil Kumar; Rana, Jogender Singh
    Environmental deterioration due to anthropogenic activities is a threat to sustainable, clean and green environment. Accumulation of hazardous chemicals pollutes soil, water and air and thus significantly affects all the ecosystems. This article highlight the challenges associated with various conventional techniques such as filtration, absorption, flocculation, coagulation, chromatographic and mass spectroscopic techniques. Environmental nanotechnology has provided an innovative frontier to combat the aforesaid issues of sustainable environment by reducing the non-requisite use of raw materials, electricity, excessive use of agrochemicals and release of industrial effluents into water bodies. Various nanotechnology based approaches including surface enhance scattering, surface plasmon resonance; and distinct types of nanoparticles like silver, silicon oxide and zinc oxide have contributed significantly in detection of environmental pollutants. Biosensing technology has also gained significant attention for detection and remediation of pollutants. Furthermore, nanoparticles of gold, ferric oxide and manganese oxide have been used for the on-site remediation of antibiotics, organic dyes, pesticides, and heavy metals. Recently, green nanomaterials have been given more attention to address toxicity issues of chemically synthesized nanomaterials. Hence, nanotechnology has provided a platform with tremendous applications to have sustainable environment for present as well as future generations. This review article will help to understand the fundamentals for achieving the goals of sustainable development, and healthy environment. � 2021 Elsevier Ltd