A Review on Emerging Strategies for Heavy Metal Remediation from Various Sources
DOI:
https://doi.org/10.38211/jqaas.2023.3.40Keywords:
Heavy metals, Sources, In-situ remediation, Ex-situ remediationAbstract
The current review addressed a research gap by identifying the most effective different remediation techniques and reducing soil contamination by adapting less cost-effective heavy metal contamination reduction techniques. Around 20 million hectares of terrestrial have been polluted by heavy metals that are above the geobaseline or regulatory limitations. These metals include Arsenic, Chromium, Lead, Cadmium, Mercury, Cobalt, Nickel, Zinc, and Selenium. Land reclamation benefits both the natural world and the economy. For environmental and health reasons, we should prohibit agricultural practices Nitrogen-based fertilizers, chemical pesticides
depraved management practices include poorly managed animal feeding operations, overgrazing, plowing, fertilizer, and improper, excessive, or badly timed use of pesticides that degrade local air quality. Many people feel that lead is the most hazardous metal there is. Production, use, and disposal of gasoline, fertilizers, paints, and explosives contribute to lead contamination, which is damaging to creatures besides the environment. Heavy metal contamination of the soil endangers wellbeing of all living creatures. An overview of the global problem of heavy metal poisoning of soil, the rate at which metals accumulate at toxic levels in plants, and the various types of soil contamination controls. Some in-situ and ex-situ remedy strategies for heavy metal contamination removal comprise external capping, encapsulation, landfilling, soil flushing and washing, electrokinetic extraction, stabilization, solidification, vitrification, phytoremediation, and bioremediation. The main objective is to preferred elimination/abstraction of impurities over the immobilization of hazardous containments, and among numerous methods in-situ soil remediation is more cost-effective than ex-situ handling. Reducing heavy metal exposure in people and plants is made easier with the help of the many strategies presented in this article.
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