articleACS Sustainable Chemistry & EngineeringApr 25, 2017Closed access

Amorphous MnO 2 Modified Biochar Derived from Aerobically Composted Swine Manure for Adsorption of Pb(II) and Cd(II)

JLJie LiangXLXuemei LiZYZhigang YuGZGuangming ZengYLYuan Luo

Hunan University · Hong Kong University of Science and Technology · +1 more institution

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Abstract

This study reports creative preparation of MnO2-biochar (MBR) via MnO2 modification of biochar (BR) derived from aerobically composted swine manure. SEM coupled with EDX analyzer, TEM, XRD, BET, and FT-IR were employed to examine the surface properties and pore structures of MBR and BR. Adsorption experiments of Pb(II) and Cd(II) including isotherms, kinetics, and thermodynamics as well as the influence of pH on zeta-potential were also investigated. The results indicated that MBR showed rougher and larger surface area and pore volume than BR. In batch adsorption, MBR showed superior adsorption performance (maximum capacity for Pb 268.0 mg/g and Cd 45.8 mg/g) to BR (Pb 127.75 and Cd 14.41 mg/g). The adsorption…

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Topics & keywords

Topics
Keywords
  • Biochar
  • Adsorption
  • Chemistry
  • X-ray photoelectron spectroscopy
  • Metal ions in aqueous solution
  • Nuclear chemistry
  • Zeta potential
  • Manure
UN Sustainable Development Goals
  • Clean water and sanitation
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