Research progress on adsorption of modified biochar for Pb removal from wastewater
In order to address the problem of the low efficiency of lead(Pb)adsorption from wastewater by biochar,this study briefly describes the current adsorption mechanism and influencing factors of Pb ad-sorption by biochar.Based on the different loading substances,the modification methods are categorized into organic compounds modification,non-metallic compounds modification,and metal compounds modifi-cation.The contributions of these different modification methods to the technological mechanism involved in Pb adsorption from wastewater by biochar are summarized emphatically.It is clarified that the investiga-tion of the adsorption mechanism is instructive for the selection of modification methods in the process of Pb adsorption from wastewater by biochar.It is pointed out that researching two or more composite modifi-cation methods is the future trend,providing research ideas for the application of modified biochar in wastewater purification.
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