A critical review on the development of lanthanum-engineered biochar for environmental applications
文献类型: 外文期刊
作者: Yang L.;Liang C.;Shen F.;Hu M.;Zhu W.;Dai L.
作者机构:
关键词: Adsorption;Biochar;Lanthanum;Phosphorus;Soil remediation
期刊名称: Journal of Environmental Management
ISSN: 0301-4797
年卷期: 2023 年 332 卷
页码:
收录情况: SCIE(2023版)
摘要: Biochar and lanthanum (La) have been widely used in environment. However, there is a lack of knowledge and perspective on the development of La-engineered biochar (LEB) for environmental applications. This review shows that LEBs with a variety of La species via pre-/post-doping routes are developed for environmental applications. Specifically, precipitation, gelation, and calcination are the common sub-processes involved in the pre-/post-doping of La on the resultant LEB. The dominant La species for LEBs is La(OH)3, which is formed through precipitation of La ions with various bases. Various La carbonates, e.g., LaOHCO3, La2(CO3)3, La2CO5, and NaLa(CO3)2, are also involved in the preparation of LEBs. The LEBs are high-efficient in the adsorption of phosphate, arsenic, antimonate and fluoride ions, attributed to the strong affinity of La to oxyanions and Lewis hard base. Lanthanum is also favorable for co-doping with transition metal species to further enhance the performances in adsorption or catalysis. This review also analyzes the prospects and future challenges for the preparation and application of LEBs in environment. Finally, this review is beneficial to inspire new breakthroughs on the preparation and environmental application of LEBs. © 2023 Elsevier Ltd
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