Chemical Approaches to Remediate Heavy Metals

The high-density elements are harmful even in low quantities such as heavy trace metals; Arsenic, Copper, Cadmium, Lead, Mercury, and Chromium which are hazardous to the natural resources. They enter waterways by industrial operations, mining, urban runoff, agriculture, e-waste, and pesticides and cause cytotoxicity, neurotoxicity, organ damage, cancer, and weak bones. may remedy heavy metal pollution. Some promising methods that could reduce the heavy metal contamination of wastewater are membrane filtration, catalysts, ion exchange, biosorbent, and nanomaterial adsorption. In this study, Datura metel fruit peel biochar (DPB) infused with zinc oxide nanoparticle (ZnO-NP) is used as a nanocomposite for the remediation of Pb2+ and Cd2+ from synthetic wastewater. The best parameters for DPB and DPB-ZnO3 (3% infusion ratio of ZnO-NP) adsorption of Pb2+ and Cd2+ ions in synthetic wastewater were 3% ZnO infusion ratio, 6.75 solution pH, 65 minutes contact time, and 82 mg/l starting heavy metal concentration. Both DPB and DPB-ZnO biosorbents adsorb Pb2+ better than Cd2+ under the indicated conditions. For Cd2+ adsorption, DPB and DPB-ZnO had the greatest capacities of 27.56 and 48.27 mg/g, respectively. DPB and DPB-ZnO had maximal Pb2+ adsorption capabilities of 25.17 and 49.38 mg/g. The current study represents the adsorption capability of the nanocomposite concludes that Pb2+ and Cd2+ can be efficiently remediated from heavy metal contaminated wastewater that gives substantial advantages in terms of environmental protection and human health.

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Heavy Metal Contamination in Urban Soils: Health Impacts on Humans and Plants: A Review

Monib,

Niazi,

Azizi

et al. 2024

ejtas

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This research looks at how the growth of cities and industries affects the levels of heavy metals in the soil, which can impact people's health. We find out where the pollution comes from, such as factories, car fumes, and improper waste disposal, by reviewing existing studies. We use different methods to test the soil for heavy metals and study how exposure to these metals in urban areas affects people's health. The evidence shows a connection between high levels of heavy metals in city soil and health problems like breathing issues, brain disorders, and overall toxicity in the body. We also explore how these metals get into the human body, highlighting the importance of understanding how they are available and the ways people are exposed. To deal with polluted city soils, we look at different ways to manage the soil and suggest sustainable methods to reduce heavy metal pollution. Our discoveries add to what we know about urban environmental health, emphasizing the need for actions to protect city residents. Ultimately, this study aims to give important information and insights to policymakers, city planners, and public health officials for managing and lessening the health risks linked to heavy metal contamination in urban soils.

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Chemical Approaches to Remediate Heavy Metals

Cited by 3 publications

References 78 publications

Non-wood-based biochars as promising and eco-friendly adsorbents for chromium hexavalent Cr (VI) removal from aquatic systems: state-of-the-art, limitations, and potential future directions

Non-wood-based biochars as promising and eco-friendly adsorbents for chromium hexavalent Cr (VI) removal from aquatic systems: state-of-the-art, limitations, and potential future directions

Mitigation of Lead (Pb2+) and Cadmium (Cd2+) synthetic wastewater using Datura metel fruit peel biochar- zinc oxide nanocomposite

Heavy Metal Contamination in Urban Soils: Health Impacts on Humans and Plants: A Review

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