Bioflocculant production from molasses by Photorhabdus luminescens, flocculation condition optimization and its application in heavy metal removal
A novel biopolymer flocculant was produced from molasses by Photorhabdus luminescens fermentation, and the medium was optimized to increase the yield of biomolecular flocculant by single factor test. Using flocculation rate as the response value, the effect of flocculant on the flocculation effect o...
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Editorial Department of China Brewing
2025-01-01
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| Series: | Zhongguo niangzao |
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| Online Access: | https://manu61.magtech.com.cn/zgnz/fileup/0254-5071/PDF/0254-5071-2025-44-1-247.pdf |
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| author | LIN Jingwen, LIU Zehong, PAN Xieting, LI Mengping, HUANG Shanxin, CHEN Yingqiu, HUANG Dan, YE Yun, LI Xiaolong |
| author_facet | LIN Jingwen, LIU Zehong, PAN Xieting, LI Mengping, HUANG Shanxin, CHEN Yingqiu, HUANG Dan, YE Yun, LI Xiaolong |
| author_sort | LIN Jingwen, LIU Zehong, PAN Xieting, LI Mengping, HUANG Shanxin, CHEN Yingqiu, HUANG Dan, YE Yun, LI Xiaolong |
| collection | DOAJ |
| description | A novel biopolymer flocculant was produced from molasses by Photorhabdus luminescens fermentation, and the medium was optimized to increase the yield of biomolecular flocculant by single factor test. Using flocculation rate as the response value, the effect of flocculant on the flocculation effect of kaolin suspension was studied by single factor test and response surface methodology. The results showed that the optimal medium composition was molasses 5 g/L, pepton 10 g/L, NaCl 5 g/L. Under these conditions, the flocculant yield reached 4.53 g/L. The optimal flocculation conditions were pH 7.0, biological flocculant 200 mg/L, cationic inducer (FeCl<sub>3</sub>) 50 mg/L and stirring rate 240 r/min. Under these conditions, the flocculation rate of flocculant on kaolin reached 93.2%. The removal rates of Cr, Pb, Ni, Cu and Cd were 61.32%, 58.22%, 85.90%, 78.18% and 80.71%, respectively. Molasses was used as carbon source for cheap medium of bioflocculant, which could reduce the culture cost and realize the reuse of waste residue. |
| format | Article |
| id | doaj-art-84d90a3cfac54403b4cf4cf366c58366 |
| institution | DOAJ |
| issn | 0254-5071 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Editorial Department of China Brewing |
| record_format | Article |
| series | Zhongguo niangzao |
| spelling | doaj-art-84d90a3cfac54403b4cf4cf366c583662025-08-20T02:58:19ZengEditorial Department of China BrewingZhongguo niangzao0254-50712025-01-0144124725210.11882/j.issn.0254-5071.2025.01.036Bioflocculant production from molasses by Photorhabdus luminescens, flocculation condition optimization and its application in heavy metal removalLIN Jingwen, LIU Zehong, PAN Xieting, LI Mengping, HUANG Shanxin, CHEN Yingqiu, HUANG Dan, YE Yun, LI Xiaolong01. College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou 545000, China; ;2. School of Food and Bioengineering, Hezhou University, Hezhou 542800, ChinaA novel biopolymer flocculant was produced from molasses by Photorhabdus luminescens fermentation, and the medium was optimized to increase the yield of biomolecular flocculant by single factor test. Using flocculation rate as the response value, the effect of flocculant on the flocculation effect of kaolin suspension was studied by single factor test and response surface methodology. The results showed that the optimal medium composition was molasses 5 g/L, pepton 10 g/L, NaCl 5 g/L. Under these conditions, the flocculant yield reached 4.53 g/L. The optimal flocculation conditions were pH 7.0, biological flocculant 200 mg/L, cationic inducer (FeCl<sub>3</sub>) 50 mg/L and stirring rate 240 r/min. Under these conditions, the flocculation rate of flocculant on kaolin reached 93.2%. The removal rates of Cr, Pb, Ni, Cu and Cd were 61.32%, 58.22%, 85.90%, 78.18% and 80.71%, respectively. Molasses was used as carbon source for cheap medium of bioflocculant, which could reduce the culture cost and realize the reuse of waste residue.https://manu61.magtech.com.cn/zgnz/fileup/0254-5071/PDF/0254-5071-2025-44-1-247.pdfbioflocculant|<i>photorhabdus luminescens</i>|flocculation condition|response surface methodology|flocculation rate|heavy metal removal |
| spellingShingle | LIN Jingwen, LIU Zehong, PAN Xieting, LI Mengping, HUANG Shanxin, CHEN Yingqiu, HUANG Dan, YE Yun, LI Xiaolong Bioflocculant production from molasses by Photorhabdus luminescens, flocculation condition optimization and its application in heavy metal removal Zhongguo niangzao bioflocculant|<i>photorhabdus luminescens</i>|flocculation condition|response surface methodology|flocculation rate|heavy metal removal |
| title | Bioflocculant production from molasses by Photorhabdus luminescens, flocculation condition optimization and its application in heavy metal removal |
| title_full | Bioflocculant production from molasses by Photorhabdus luminescens, flocculation condition optimization and its application in heavy metal removal |
| title_fullStr | Bioflocculant production from molasses by Photorhabdus luminescens, flocculation condition optimization and its application in heavy metal removal |
| title_full_unstemmed | Bioflocculant production from molasses by Photorhabdus luminescens, flocculation condition optimization and its application in heavy metal removal |
| title_short | Bioflocculant production from molasses by Photorhabdus luminescens, flocculation condition optimization and its application in heavy metal removal |
| title_sort | bioflocculant production from molasses by photorhabdus luminescens flocculation condition optimization and its application in heavy metal removal |
| topic | bioflocculant|<i>photorhabdus luminescens</i>|flocculation condition|response surface methodology|flocculation rate|heavy metal removal |
| url | https://manu61.magtech.com.cn/zgnz/fileup/0254-5071/PDF/0254-5071-2025-44-1-247.pdf |
| work_keys_str_mv | AT linjingwenliuzehongpanxietinglimengpinghuangshanxinchenyingqiuhuangdanyeyunlixiaolong bioflocculantproductionfrommolassesbyphotorhabdusluminescensflocculationconditionoptimizationanditsapplicationinheavymetalremoval |