期刊
ADVANCES IN COLLOID AND INTERFACE SCIENCE
卷 305, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.cis.2022.102687
关键词
Biochar; Activated carbon; Competitive adsorption; Simultaneous removal; Multicomponent solutions; Mixed adsorbate systems
Biochars and activated carbons are widely used as adsorbents for heavy metals, dyes, and pharmaceuticals. This paper provides an overview of their adsorption of inorganic and organic compounds in mixed adsorbate systems.
Biochars are obtained by biomass pyrolysis, whereas activated carbon is a biochar that has undergone chemical or physical activation. Owing to the large surface area and easy surface modification both solids are widely applied as adsorbents. They are low-costs materials, they could be regenerated and their disposal is not troublesome. Adsorption of heavy metals, dyes, pharmaceuticals on the surface of biochars and activated carbons, from simple systems of adsorbate containing only one compound, are described extensively in the literature. The present paper provides an overview of reports on adsorption of inorganic and organic compounds onto these two types of adsorbents from the mixed adsorbate systems. The described adsorbate systems have been divided into those consisting of: two or more inorganic ions, two or more organic compounds and both of them (inorganic and organic ones). The research of this type is carried out much less frequently due to the more complicated description of interactions in the mixed adsorbate systems.
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