期刊
TOXICS
卷 11, 期 2, 页码 -出版社
MDPI
DOI: 10.3390/toxics11020147
关键词
heavy metals; toxicity; source of heavy metal ions; eco-friendly; heavy metal removal
Urbanization and industrialization cause environmental contamination and the presence of toxic heavy metal ions, leading to health issues. Traditional methods for heavy metal decontamination have drawbacks, necessitating the development of cost-effective and eco-friendly solutions. This review focuses on heavy metal contamination, toxicity, and the use of biological approaches for removal.
Urbanization and industrialization are responsible for environmental contamination in the air, water, and soil. These activities also generate large amounts of heavy metal ions in the environment, and these contaminants cause various types of health issues in humans and other animals. Hexavalent chromium, lead, and cadmium are toxic heavy metal ions that come into the environment through several industrial processes, such as tanning, electroplating, coal mining, agricultural activities, the steel industry, and chrome plating. Several physical and chemical methods are generally used for the heavy metal decontamination of wastewater. These methods have some disadvantages, including the generation of secondary toxic sludge and high operational costs. Hence, there is a need to develop a cost-effective and eco-friendly method for the removal of heavy metal ions from polluted areas. Biological methods are generally considered eco-friendly and cost-effective. This review focuses on heavy metal contamination, its toxicity, and eco-friendly approaches for the removal of heavy metals from contaminated sites.
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