Biosorption of Heavy Metal Ions from Aqueous Solution on Chinese Fir Bark Modified by Sodium Hypochlorite
作者： Wenpeng Su , Yiqin Yang , Hongqi Dai , Linyu Jiang
DOI: 10.15376/BIORES.10.4.6993-7008
关键词:
摘要: The oxidation conditions and adsorption ability of Cu (II), Cd Pb (II) from an aqueous solution sodium hypochlorite-oxidized fir bark powder were investigated. optimum amount NaClO was 9.6%, the pH 9, time 120 min. Batch experiments carried out with various times, values, initial metal ion concentrations. isotherms kinetics also studied. maximum capacity oxidized 0.983, 1.223, 0.966 mmol/g for respectively, within 30 min at 5, higher than that unoxidized bark. isothermal heavy ions in a good fit to Langmuir equation, coefficient determination, R2, above 0.99. on can be appropriately approximated by pseudo-second order model. Results indicate modified hypochlorite adsorb large amounts could adsorbent removal Cu(II), Cd(II), Pb(II) solution.
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