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Biochar applications for treating potentially toxic elements (PTEs) contaminated soils and water: a review

文献类型： 外文期刊

作者： Zhang, Xu 1 ; Zou, Guoyan 1 ; Chu, Huaqiang 2 ; Shen, Zheng 4 ; Zhang, Yalei 2 ; Abbas, Mohamed H. H. 5 ; Albogami, Bader Z. 6 ; Zhou, Li 1 ; Abdelhafez, Ahmed A. 7 ;

作者机构： 1.Shanghai Acad Agr Sci, Ecoenvironm Protect Res Inst, Shanghai, Peoples R China

2.Tongji Univ, Coll Environm Sci & Engn, State Key Lab Pollut Control & Resource Reuse, Shanghai, Peoples R China

3.Shanghai Engn Res Ctr Low Carbon Agr, Shanghai, Peoples R China

4.Tongji Univ, Natl Engn Res Ctr Protected Agr, Shanghai Engn Res Ctr Protected Agr, Shanghai 200092, Peoples R China

5.Benha Univ, Fac Agr, Soils & Water Dept, Banha, Egypt

6.Najran Univ, Fac Sci & Arts, Dept Biol, Najran, Saudi Arabia

7.New Valley Univ, Fac Agr, Soils & Water Dept, New Valley, Egypt

8.Acad Sci Res & Technol, Natl Comm Soil Sci, Cairo, Egypt

关键词： biochar; soil; water; potentially toxic elements (PTEs); remediation technologies

期刊名称：FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY （ 影响因子：5.7； 五年影响因子：6.2 ）

ISSN： 2296-4185

年卷期： 2023 年 11 卷

页码：

收录情况： SCI

摘要： Environmental pollution with potentially toxic elements (PTEs) has become one of the critical and pressing issues worldwide. Although these pollutants occur naturally in the environment, their concentrations are continuously increasing, probably as a consequence of anthropic activities. They are very toxic even at very low concentrations and hence cause undesirable ecological impacts. Thus, the cleanup of polluted soils and water has become an obligation to ensure the safe handling of the available natural resources. Several remediation technologies can be followed to attain successful remediation, i.e., chemical, physical, and biological procedures; yet many of these techniques are expensive and/or may have negative impacts on the surroundings. Recycling agricultural wastes still represents the most promising economical, safe, and successful approach to achieving a healthy and sustainable environment. Briefly, biochar acts as an efficient biosorbent for many PTEs in soils and waters. Furthermore, biochar can considerably reduce concentrations of herbicides in solutions. This review article explains the main reasons for the increasing levels of potentially toxic elements in the environment and their negative impacts on the ecosystem. Moreover, it briefly describes the advantages and disadvantages of using conventional methods for soil and water remediation then clarifies the reasons for using biochar in the clean-up practice of polluted soils and waters, either solely or in combination with other methods such as phytoremediation and soil washing technologies to attain more efficient remediation protocols for the removal of some PTEs, e.g., Cr and As from soils and water.

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