TY - JOUR
T1 - Biochar composites: Emerging trends, field successes, and sustainability implications
AU - Wang, Liuwei
AU - Ok, Yong Sik
AU - Tsang, Daniel C.w.
AU - Alessi, Daniel S.
AU - Rinklebe, Jörg
AU - Mašek, Ondřej
AU - Bolan, Nanthi S.
AU - Hou, Deyi
PY - 2022/1/1
Y1 - 2022/1/1
N2 - Engineered biochars are promising candidates in a wide range of environmental applications, including soil fertility improvement, contaminant immobilization, wastewater treatment and in-situ carbon sequestration. This review provides a systematic classification of these novel biochar composites, and identifies the promising future trends in composite research and application. It is proposed that metals, minerals, layered double hydroxides, carbonaceous nanomaterials, and microorganisms enhance the performances of biochars via distinct mechanisms. In this review, four novel trends are identified and assessed critically. Firstly, facile synthesis methods, in particular ball milling and co-pyrolysis, have emerged as popular composite fabrication strategies that are suitable for large-scale applications. Secondly, biochar modification with green materials, such as natural clay minerals and microorganisms, align well with the on-going green and sustainable remediation (GSR) movement. Furthermore, new applications in soil health improvement and climate change mitigation support the realization of United Nation’s Sustainable Development Goals (SDGs). Finally, the importance of field studies is getting more attention, since evidence of field success is critically needed before large-scale applications.
AB - Engineered biochars are promising candidates in a wide range of environmental applications, including soil fertility improvement, contaminant immobilization, wastewater treatment and in-situ carbon sequestration. This review provides a systematic classification of these novel biochar composites, and identifies the promising future trends in composite research and application. It is proposed that metals, minerals, layered double hydroxides, carbonaceous nanomaterials, and microorganisms enhance the performances of biochars via distinct mechanisms. In this review, four novel trends are identified and assessed critically. Firstly, facile synthesis methods, in particular ball milling and co-pyrolysis, have emerged as popular composite fabrication strategies that are suitable for large-scale applications. Secondly, biochar modification with green materials, such as natural clay minerals and microorganisms, align well with the on-going green and sustainable remediation (GSR) movement. Furthermore, new applications in soil health improvement and climate change mitigation support the realization of United Nation’s Sustainable Development Goals (SDGs). Finally, the importance of field studies is getting more attention, since evidence of field success is critically needed before large-scale applications.
U2 - 10.1111/sum.12731
DO - 10.1111/sum.12731
M3 - Article
VL - 38
SP - 14
EP - 38
JO - Soil Use and Management
JF - Soil Use and Management
SN - 0266-0032
IS - 1
ER -