Browsing by Author "Noronha, F.R."

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    Role of coconut shell biochar and earthworm (Eudrilus euginea) in bioremediation and palak spinach (Spinacia oleracea L.) growth in cadmium-contaminated soil
    (Academic Press, 2022) Noronha, F.R.; Manikandan, S.K.; Nair, N.
    The contamination of soil with heavy metals is known to affect the yield the soil fertility, which in turn affects the growth of agricultural crops. This study investigates the role of coconut shell biochar (CSB) and earthworms (Eudrilus euginea) in the bioremediation and growth of Palak spinach (Spinacia oleracea L.) in cadmium (Cd) contaminated soil. The soils were amended with different combinations of CSB and earthworms and incubated for 35 days. Later, the soil samples were analyzed for the changes in the soil properties, soil enzyme activity, and heavy metal contents. It is observed that the treatments with both CSB and earthworms resulted in the improvement of soil properties and soil enzyme activity which was directly related to soil fertility. Meanwhile, the maximum removal of 94.38% of total Cd content in the soil was obtained for the soil sample contain both CSB and earthworms. The improved soil properties resulted in a higher germination percentage of Spinacia oleracea L. seeds in the Cd contaminated soil. © 2021 Elsevier Ltd
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    Soil toxicity and remediation techniques
    (Elsevier, 2022) Manikandan, S.K.; Shilli, A.; Noronha, F.R.; Nair, N.
    Soil is a major component required for the growth of plant, and its studies have been carried out intensively for enhanced agricultural production. The need to fulfill the food demands of the increasing human population and the requirement to safeguard food crops has resulted in the heavy usage of pesticides. However, the continuous usage of pesticides and their ability to persist in soil for a longer period has become a threat to society. The pesticide residue in the soil can cause severe environmental problems due to their high accumulative and persistent existence, that are biomagnified through the food chain of various life forms. Different disposal techniques classified as physicochemical technologies, biological technologies, and thermal technologies have been reported to be effective in pesticide removal from soil. Similarly, the application of green chemistry and nanotechnology have been stated to be effective for the removal of pesticides from the soil. This chapter provides detailed information on the various remediation involved in pesticide removal from soil. In addition, it also provides insights on the new technologies for treating contaminated soil and the economic aspect involved in the disposal of pesticides. © 2022 Elsevier Inc. All rights reserved.