Sustainable harvesting of Chlorella vulgaris using bioflocculants from Camellia oleifera cake-based medium

IF 13.3 1区工程技术 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Pub Date : 2025-01-28 DOI:10.1016/j.cej.2025.160068

Yalin Chen, Jing Huang, Cheng Zhao, Wenbin Li, Xuan Zhang, Bojun Huang, Zhongliang Huang, Hui Li, Zizi Man, Yi Man, Weiping Xiong, Zhaohui Yang

{"title":"Sustainable harvesting of Chlorella vulgaris using bioflocculants from Camellia oleifera cake-based medium","authors":"Yalin Chen, Jing Huang, Cheng Zhao, Wenbin Li, Xuan Zhang, Bojun Huang, Zhongliang Huang, Hui Li, Zizi Man, Yi Man, Weiping Xiong, Zhaohui Yang","doi":"10.1016/j.cej.2025.160068","DOIUrl":null,"url":null,"abstract":"Camellia oleifera cake (COC) is a by-product of the Camellia oleifera oil collection process, which is rich in nutrients such as polysaccharide and protein. This study represents the first use of COC as a microbial medium substitute and its potential for producing bioflocculants. The COC was used to culture Paenibacillus polymyxa GA1, and its colony counts was more than one order of magnitude higher than that in the traditional fermentation medium, increasing from <math><mrow is=\"true\"><mn is=\"true\">0.6</mn><mo is=\"true\">×</mo><msup is=\"true\"><mrow is=\"true\"><mn is=\"true\">10</mn></mrow><mn is=\"true\">7</mn></msup></mrow></math> CFU/mL to <math><mrow is=\"true\"><mn is=\"true\">1.8</mn><mo is=\"true\">×</mo><msup is=\"true\"><mrow is=\"true\"><mn is=\"true\">10</mn></mrow><mn is=\"true\">8</mn></msup></mrow></math> CFU/mL. The bioflocculant produced by GA1 had a flocculation efficiency of 98.9 ± 0.4 % on kaolin suspension, which remained unchanged when the volume of acetone used in extracting the bioflocculant was reduced by 75 %. Chlorella vulgaris was harvested with the bioflocculant and the harvesting efficiency reached 95.6 ± 0.3 %, even without improving the pH. The above results demonstrate the potential of COC as an alternative medium.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"31 1","pages":""},"PeriodicalIF":13.3000,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Engineering Journal","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1016/j.cej.2025.160068","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Camellia oleifera cake (COC) is a by-product of the Camellia oleifera oil collection process, which is rich in nutrients such as polysaccharide and protein. This study represents the first use of COC as a microbial medium substitute and its potential for producing bioflocculants. The COC was used to culture Paenibacillus polymyxa GA1, and its colony counts was more than one order of magnitude higher than that in the traditional fermentation medium, increasing from

0.6 \times 10^{7}

 CFU/mL to

1.8 \times 10^{8}

CFU/mL. The bioflocculant produced by GA1 had a flocculation efficiency of 98.9 ± 0.4 % on kaolin suspension, which remained unchanged when the volume of acetone used in extracting the bioflocculant was reduced by 75 %. Chlorella vulgaris was harvested with the bioflocculant and the harvesting efficiency reached 95.6 ± 0.3 %, even without improving the pH. The above results demonstrate the potential of COC as an alternative medium.

Abstract Image

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Chemical Engineering Journal 工程技术-工程：化工

CiteScore

21.70

自引率

9.30%

发文量

6781

审稿时长

2.4 months

期刊介绍： The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.