Characterization of an novel extracellular biopolymer by scanning electron microscopy and FT-IR spectroscopy and its use for nickel removal
In the present study we reported the feasibility of extracellular biopolymer(PF-9) produced by Pseudomonas fluorescence C-9 as an alternative biosorbent to remove Ni(Ⅱ) metallic ions from environmental and industrial wastewater. The ability of PF-9 to remove the Ni(Ⅱ) ions was investigated by using batch biosorption procedure. The effects such as pH, dosage of biosorbent, Ni(Ⅱ) initial concentration and sorbate々 sorbent contact time and agitating speed on the adsorption capacities of PF-9 were studied. Biosorption equilibriums were rapidly established in about 60 min and the adsorption kinetics followed the pseudo-second order kinetic model. The maximum Ni(Ⅱ) adsorption capacity determined from Langmuir isotherm were 82.40 mg /g PF-9 at pH 5.0 ,at 25C and shaker speed 150 rpm, respectively. The carboxyl , hydroxyl and amino groups of the PF-9 were involved in chemical interaction with the Ni(Ⅱ) ions depicted by scanning electron microscopic (SEM) and Fourier transform infrared spectroscopic (FTIR) results. The study points to the potential of new use of extracellular biopolymer PF-9 as an effective biosorbent for the removal of Ni (Ⅱ) and from environmental and industrial wastewater.
Yan-li Mao Ya-li He Duan-li Guo Zhong-fang Pei Ming-hua Gao Wei Wen
Henan University of Urban Construction Pingdingshan,Henan,467001 Yida Construction and Installation Company of Pingdingshan Pingdingshan, Henan, 467001 Construction Engineering Quality Supervise Station of Pingdingshan Construction Commmittee
国际会议
成都
英文
1-5
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）