Journal ArticleUnknown
Biochar surface complexation and Ni(II), Cu(II), and Cd(II) adsorption in aqueous solutions depend on feedstock type
Authors
Author Affiliations
University of Alberta, Guangdong Academy of Agricultural Sciences, Jeonbuk National University, Bangladesh University of Engineering and Technology
Published InThe Science of The Total Environment
Year2020
Citations258
Abstract
Biochar is a promising material for efficient removal of toxic metals from wastewater to meet standards for discharge into surface water. We characterized adsorption behaviour of willow (Salix alba) wood (WW) and cattle manure (CM) and their biochars, willow wood biochar (WWB) and cattle manure biochar (CMB), and elucidated the mechanisms for the removal of Ni(II), Cu(II) and Cd(II) from aqueous solutions. The kinetic adsorption suggests that the adsorption of Ni(II), Cu(II) and Cd(II) by feedstock and their biochars was controlled by mass transport, and chemisorption also played a role in the adsorption process. The Elovich model also well described the adsorption kinetics for WW and CM (R2 > 0.92), indicating that heterogeneous diffusion was the mechanism. The Sips isotherm…
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Fields & Keywords
Physical SciencesEnvironmental ScienceWater Science and TechnologyAdsorption and biosorption for pollutant removalHeavy metals in environmentRecycling and utilization of industrial and municipal waste in materials productionInorganic chemistryNuclear chemistryOrganic chemistryEnvironmental engineering