A New Strategy for Heavy Metal Polluted Environments: A Review of Microbial Biosorbents

被引:968
作者
Ayangbenro, Ayansina Segun [1 ]
Babalola, Olubukola Oluranti [1 ]
机构
[1] North West Univ, Food Secur & Safety Niche Area, Fac Agr Sci & Technol, Private Bag X2046, ZA-2735 Mmabatho, South Africa
基金
新加坡国家研究基金会;
关键词
bioremediation; biosorbent; biosorption; heavy metals; microorganisms; remediation; AQUEOUS-SOLUTIONS; BIOSORPTION; BIOREMEDIATION; REMOVAL; TOXICITY; LEAD; SOIL; REMEDIATION; BACTERIA; PHYTOREMEDIATION;
D O I
10.3390/ijerph14010094
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Persistent heavy metal pollution poses a major threat to all life forms in the environment due to its toxic effects. These metals are very reactive at low concentrations and can accumulate in the food web, causing severe public health concerns. Remediation using conventional physical and chemical methods is uneconomical and generates large volumes of chemical waste. Bioremediation of hazardous metals has received considerable and growing interest over the years. The use of microbial biosorbents is eco-friendly and cost effective; hence, it is an efficient alternative for the remediation of heavy metal contaminated environments. Microbes have various mechanisms of metal sequestration that hold greater metal biosorption capacities. The goal of microbial biosorption is to remove and/or recover metals and metalloids from solutions, using living or dead biomass and their components. This review discusses the sources of toxic heavy metals and describes the groups of microorganisms with biosorbent potential for heavy metal removal.
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页数:16
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