title: Partially hydrolyzed bamboo (Phyllostachys heterocycla) as a porous Bioadsorbent for the removal of Pb(II) from aqueous mixtures.
abstract: A novel porous succinylated bioadsorbent was prepared by the partial enzymatic hydrolysis of bamboo (Phyllostachys heterocycla) and its subsequent modification with succinic anhydride. Pb(II) removal from solutions that also contained sodium chloride and an amino acid was investigated using the bioadsorbent. Enzymatic hydrolysis increased the number of accessible hydroxyl groups and surface area of the raw bamboo, and created many pores within the material. The porous succinylated bioadsorbent exhibited high efficiency for Pb(II) binding. The sodium chloride content significantly decreased the Pb(II) adsorption capacity, whereas a minor effect was observed in the presence of arginine. The experimental data could be accurately described by a pseudo-second-order kinetics model, and the adsorption proceeded via an ion exchange mechanism. Even in a solution containing sodium chloride and arginine, the maximum adsorption capacity of Pb(II) by the porous succinylated bioadsorbent was 99.5 mg/g at 303 K.
authors.affiliation: School of Food and Pharmacy, Zhejiang Ocean University , Zhoushan 316022, P. R. China.
authors.forename: Xiao-kun
authors.initials: XK
authors.lastname: OuYang
authors.forename: Ru-Na
authors.initials: RN
authors.lastname: Jin
authors.forename: Le-Ping
authors.initials: LP
authors.lastname: Yang
authors.forename: Zheng-Shun
authors.initials: ZS
authors.lastname: Wen
authors.forename: Li-Ye
authors.initials: LY
authors.lastname: Yang
authors.forename: Yang-Guang
authors.initials: YG
authors.lastname: Wang
authors.forename: Chong-Yu
authors.initials: CY
authors.lastname: Wang
mesh_terms: D000327:Adsorption; D052918:Environmental Restoration and Remediation / Q000295:instrumentation / Q000379:methods*; D006868:Hydrolysis; D007700:Kinetics; D007854:Lead / Q000737:chemistry*; D006109:Poaceae / Q000737:chemistry*; D016062:Porosity; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D014874:Water Pollutants, Chemical; D007854:Lead