Manganese oxide-modified biochar: production, characterization and applications for the removal of pollutants from aqueous environments a review

The development of manganese (Mn) oxides (MnOx) modified biochar (MnOBC) for the removal of pollutants from water has received significant attention. However, a comprehensive review focusing on the use of MnOBC for the removal of organic and inorganic pollutants from water is missing. Therefore, the preparation and characterization of MnOBC, and its capacity for the removal of inorganic (e.g., toxic elements) and organic (e.g., antibiotics and dyes) from water have been discussed in relation to feedstock properties, pyrolysis temperature, modification ratio, and environmental conditions here. The removal mechanisms of pollutants by MnOBC and the fate of the sorbed pollutants onto MnOBC have been reviewed. The impregnation of biochar with MnOx improved its surface morphology, functional group modification, and elemental composition, and thus increased its sorption capacity. This review establishes a comprehensive understanding of synthesizing and using MnOBC as an effective biosorbent for remediation of contaminated aqueous environments.

Automated summary

This review article discusses the development and use of manganese oxide modified biochar (MnOBC) for the removal of organic and inorganic pollutants from water. The preparation and characterization of MnOBC, as well as its capacity for pollutant removal, are explored in relation to various factors. The review also examines the mechanisms of pollutant removal by MnOBC and the fate of sorbed pollutants. The impregnation of biochar with MnOx enhances its sorption capacity, making it an effective biosorbent for remediation of contaminated water environments.