Biosorption of lead ions from aqueous solution by Clostridium tyrobutyricum immobilized in macroporous Ca-alginate-lignin beads

被引：5
作者：
Zheng, Wenxiu [1 ,2 ]
Zhao, Qianru [2 ]
Malkmes, Matthew Jay [3 ]
Gao, Ge [3 ]
He, Jiaqi [3 ]
Zheng, Lei [1 ,4 ]
Jiang, Ling [3 ]
机构：
[1] Hefei Univ Technol, Sch Food & Biol Engn, Hefei 230009, Peoples R China
[2] Nanjing Tech Univ, Coll Biotechnol & Pharmaceut Engn, Nanjing, Peoples R China
[3] Nanjing Tech Univ, Coll Food Sci & Light Ind, Nanjing 210009, Peoples R China
[4] Hefei Univ Technol, Engn Res Ctr Bioproc, Minist Educ, Hefei, Peoples R China
来源：
JOURNAL OF APPLIED MICROBIOLOGY | 2022年 / 132卷 / 03期
基金：
中国国家自然科学基金;
关键词：
adsorption isotherm models; adsorption kinetics models; Clostridium tyrobutyricum; lead ions; macroporous Ca-alginate-lignin beads; SACCHAROMYCES-CEREVISIAE; HEAVY-METALS; REMOVAL; ADSORPTION; CADMIUM; PB(II); DESORPTION; KINETICS; BIOMASS; COPPER;
D O I：
10.1111/jam.15387
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
Aims The adsorption of lead ions from aqueous solution by macroporous Ca-alginate-lignin (MCAL) beads immobilized with Clostridium tyrobutyricum and free strains was evaluated. Methods and Results The effects of different factors including pH, adsorption time, adsorbent dosage and initial concentration of lead ions were explored. Different characterization methods were used to evaluate the adsorption process of lead ions. Meanwhile, the adsorption kinetics models and adsorption isotherm models were applied. The fitting results showed that the adsorption behaviour of C. tyrobutyricum immobilized in MCAL beads and free strains was better described by the pseudo-second-order kinetic model and the adsorption process followed the Langmuir isotherm model. The maximum biosorption of lead ions by C. tyrobutyricum immobilized in MCAL beads and free strains was 144.9 and 106.4 mg/g respectively. Conclusions The C. tyrobutyricum immobilized in MCAL beads proved to be practicable and had better adsorption effects on lead ions compared with the free strains. Significance and Impact of the Study The paper demonstrated a new insight and strategy for the effective treatment of lead ions from aqueous solutions by the novel function of C. tyrobutyricum.
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收藏
页码：2080 / 2092
页数：13
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