A critical review on the development of lanthanum-engineered biochar for environmental applications

Lijun Yang; Chenghu Liang; Fei Shen; Mao Hu; Wenkun Zhu; Lichun Dai

doi:10.1016/j.jenvman.2023.117318

A critical review on the development of lanthanum-engineered biochar for environmental applications

J Environ Manage. 2023 Apr 15:332:117318. doi: 10.1016/j.jenvman.2023.117318. Epub 2023 Jan 24.

Authors

Lijun Yang¹, Chenghu Liang², Fei Shen³, Mao Hu², Wenkun Zhu⁴, Lichun Dai⁵

Affiliations

¹ Key Laboratory of Development and Application of Rural Renewable Energy, Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu, 610041, China.
² College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, China.
³ Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China.
⁴ State Key Laboratory of Environment-friendly Energy Materials, National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety, Nuclear Waste and Environmental Safety Key Laboratory of Defense, School of National Defense Science & Technology, Southwest University of Science and Technology, Mianyang, 621010, China.
⁵ Key Laboratory of Development and Application of Rural Renewable Energy, Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu, 610041, China. Electronic address: dailichun@caas.cn.

PMID: 36701829
DOI: 10.1016/j.jenvman.2023.117318

Abstract

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.

Keywords: Adsorption; Biochar; Lanthanum; Phosphorus; Soil remediation.

Publication types

Review

MeSH terms

Charcoal
Kinetics
Lanthanum*
Phosphates*

Substances

biochar
Lanthanum
Phosphates
Charcoal