Abstract
Over the decades, the application of heavy metals and the expansion of civilization resulted in severe pollutions in aqueous solutions. The poor degradation of toxic heavy metal contaminants in hydrosphere undoubtedly posed a huge threat to environmental safety and biological health. In this review, as most common heavy metal pollutants, arsenium (As), chromium (Cr), mercury (Hg), lead (Pb), and strontium (Sr) were introduced in detail. The chemical behaviours, chemical status, biological toxicity, and migration of mentioned contaminants were summarized. This work highlighted and reviewed the basic information of five heavy metal pollutants, which provided a new direction of toxic heavy metal ion remediation.
Highlights
In the process of human development, the utilization of heavy metal greatly promoted the advancement of civilization
The environment problems caused by mentioned pollutants in aqueous system received great attention and numerous investigations had focused on them [4]
This review summarized the environmental behaviours of As, Cr, Hg, Sr, and Pb, which provided new direction of toxic heavy metal ion remediation
Summary
In the process of human development, the utilization of heavy metal greatly promoted the advancement of civilization. Most of the heavy metal pollutants would cause varying degrees of damage to human beings and natural environment, which aroused worldwide attention to address these issues [1]. Considering the hazards of heavy metal pollution, there is much talk about water crisis, of which the most worrying is that hundreds of millions of people lack access to clean and safe water just for their daily consume and the condition is becoming serious with the impetuous development of industry. This grim situation became an inevitable problem in the industrial society. This review summarized the environmental behaviours of As, Cr, Hg, Sr, and Pb, which provided new direction of toxic heavy metal ion remediation
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