Encapsulation of Pannonibacter phragmitetus LSSE-09 in alginate-carboxymethyl cellulose capsules for reduction of hexavalent chromium under alkaline conditions
文献类型：期刊论文
| 作者 | Xu, Lin1,2,3; Luo, Mingfang3; Yang, Liangrong1,2; Wei, Xuetuan1,2,3; Lin, Xing3; Liu, Huizhou1,2 |
| 刊名 | JOURNAL OF INDUSTRIAL MICROBIOLOGY & BIOTECHNOLOGY
 |
| 出版日期 | 2011-10-01 |
| 卷号 | 38期号:10页码:1709-1718 |
| 关键词 | Cr(VI) reduction Encapsulation Reduction rate Total Cr(III) concentration Pannonibacter phragmitetus |
| ISSN号 | 1367-5435 |
| 通讯作者 | Liu, HZ |
| 英文摘要 | Cr(VI) was efficiently reduced to Cr(III) by Pannonibacter phragmitetus LSSE-09 encapsulated in liquid-core alginate-carboxymethyl cellulose capsules under alkaline conditions. Taking into account the physical properties of the capsules, the activity of encapsulated cells, and total Cr(III) concentration in the supernatant, optimal conditions (0.5% w/v sodium alginate; 2% w/v sodium carboxymethyl cellulose; 0.1 M CaCl(2); 30-min gelation time) for LSSE-09 encapsulation were determined. At optimal conditions, a relatively high reduction rate of 4.20 mg g ((dry weight)) (-1) min(-1) was obtained. Total Cr(III) concentration in the supernatant was significantly decreased after reduction, because 63.7% of the formed soluble organo-Cr(III) compounds compared with those of free cells were captured by the relatively smaller porous structure of alginate capsules. The optimal pH value (9.0) for Cr(VI) reduction was not changed after encapsulation. In addition, encapsulated LSSE-09 showed no appreciable loss in activity after eight repeated cycles at 37A degrees C, and 85.7% of its initial activity remained after 35-day storage at 4A degrees C. The results suggest that encapsulated LSSE-09 in alginate-carboxymethyl cellulose capsules has potential biotechnological applications for the detoxification of Cr(VI)-contaminated wastewater. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Biotechnology & Applied Microbiology |
| 研究领域[WOS] | Biotechnology & Applied Microbiology |
| 关键词[WOS] | CHROMATE REDUCTION ; GEL CAPSULES ; IMMOBILIZED CELLS ; SODIUM ALGINATE ; GLUCOSE-OXIDASE ; MICROBIAL-CELLS ; SP STRAIN ; MEMBRANE ; REMOVAL ; CR(VI) |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000295093300009 |
| 公开日期 | 2013-10-31 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/4623]  |
| 专题 | 过程工程研究所_湿法冶金清洁生产技术国家工程实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Lin,Luo, Mingfang,Yang, Liangrong,et al. Encapsulation of Pannonibacter phragmitetus LSSE-09 in alginate-carboxymethyl cellulose capsules for reduction of hexavalent chromium under alkaline conditions[J]. JOURNAL OF INDUSTRIAL MICROBIOLOGY & BIOTECHNOLOGY,2011,38(10):1709-1718. |
| APA | Xu, Lin,Luo, Mingfang,Yang, Liangrong,Wei, Xuetuan,Lin, Xing,&Liu, Huizhou.(2011).Encapsulation of Pannonibacter phragmitetus LSSE-09 in alginate-carboxymethyl cellulose capsules for reduction of hexavalent chromium under alkaline conditions.JOURNAL OF INDUSTRIAL MICROBIOLOGY & BIOTECHNOLOGY,38(10),1709-1718. |
| MLA | Xu, Lin,et al."Encapsulation of Pannonibacter phragmitetus LSSE-09 in alginate-carboxymethyl cellulose capsules for reduction of hexavalent chromium under alkaline conditions".JOURNAL OF INDUSTRIAL MICROBIOLOGY & BIOTECHNOLOGY 38.10(2011):1709-1718. |
入库方式： OAI收割
来源：过程工程研究所
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