A sustainable microalgae harvesting method via guar gum –Based buoy bead flotation

IF 3.7 3区 生物学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Kemin Wei , Hao Wen , Meili Wu , Yue Wang , Jia He , Xichen Zheng , Xu Liu , Peng Wei , Shaoli Fan , Linjuan Zhang , Jian Gao
{"title":"A sustainable microalgae harvesting method via guar gum –Based buoy bead flotation","authors":"Kemin Wei ,&nbsp;Hao Wen ,&nbsp;Meili Wu ,&nbsp;Yue Wang ,&nbsp;Jia He ,&nbsp;Xichen Zheng ,&nbsp;Xu Liu ,&nbsp;Peng Wei ,&nbsp;Shaoli Fan ,&nbsp;Linjuan Zhang ,&nbsp;Jian Gao","doi":"10.1016/j.bej.2025.109883","DOIUrl":null,"url":null,"abstract":"<div><div>This study presents a novel plant-based flocculation–flotation strategy for harvesting microalgae, employing cationic cellulose nanofibers (CCNF) as flocculants and a crosslinked guar gum emulsion (GGE) as buoy beads. <em>Chlorella vulgaris</em> was chosen as a representative microalgae, and single-factor and response surface experiments were conducted to optimize harvesting conditions. The results showed that under optimal conditions, the harvesting efficiency of GGE reached 96.36 %, while the concentration factor was 2.01 %. Environmental and safety assessments demonstrated minimal ecological risk, with a carbon footprint of 0.664 kg CO₂ eq and a production cost of $2.44. Residual levels of harmful substances in the supernatant were negligible. Mechanism analysis demonstrated that CCNF neutralized the microalgae electrically, inducing flocculation, while GGE served as a binder, facilitating the flotation of the flocs. These findings highlight the potential of biodegradable, plant-based materials to enable high-efficiency, low-cost, and eco-friendly microalgae harvesting suitable for large-scale biofuel production.</div></div>","PeriodicalId":8766,"journal":{"name":"Biochemical Engineering Journal","volume":"223 ","pages":"Article 109883"},"PeriodicalIF":3.7000,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biochemical Engineering Journal","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1369703X25002578","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"BIOTECHNOLOGY & APPLIED MICROBIOLOGY","Score":null,"Total":0}
引用次数: 0

Abstract

This study presents a novel plant-based flocculation–flotation strategy for harvesting microalgae, employing cationic cellulose nanofibers (CCNF) as flocculants and a crosslinked guar gum emulsion (GGE) as buoy beads. Chlorella vulgaris was chosen as a representative microalgae, and single-factor and response surface experiments were conducted to optimize harvesting conditions. The results showed that under optimal conditions, the harvesting efficiency of GGE reached 96.36 %, while the concentration factor was 2.01 %. Environmental and safety assessments demonstrated minimal ecological risk, with a carbon footprint of 0.664 kg CO₂ eq and a production cost of $2.44. Residual levels of harmful substances in the supernatant were negligible. Mechanism analysis demonstrated that CCNF neutralized the microalgae electrically, inducing flocculation, while GGE served as a binder, facilitating the flotation of the flocs. These findings highlight the potential of biodegradable, plant-based materials to enable high-efficiency, low-cost, and eco-friendly microalgae harvesting suitable for large-scale biofuel production.
瓜尔胶基浮筒珠浮可持续微藻收获方法研究
本文提出了一种以阳离子纤维素纳米纤维(CCNF)为絮凝剂,瓜尔胶乳液(GGE)为浮珠的新型植物絮凝浮选微藻捕收策略。选取小球藻为代表微藻,通过单因素试验和响应面试验对采收条件进行优化。结果表明,在最优条件下,GGE的收获效率为96.36 %,浓缩系数为2.01 %。环境和安全评估表明,生态风险最小,碳足迹为0.664 千克二氧化碳当量,生产成本为2.44美元。上清中有害物质的残留水平可以忽略不计。机理分析表明,CCNF电中和微藻,诱导絮凝;GGE作为粘结剂,促进絮凝体的浮选。这些发现突出了可生物降解的植物基材料的潜力,使高效、低成本和生态友好的微藻收获适合大规模生物燃料生产。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Biochemical Engineering Journal
Biochemical Engineering Journal 工程技术-工程:化工
CiteScore
7.10
自引率
5.10%
发文量
380
审稿时长
34 days
期刊介绍: The Biochemical Engineering Journal aims to promote progress in the crucial chemical engineering aspects of the development of biological processes associated with everything from raw materials preparation to product recovery relevant to industries as diverse as medical/healthcare, industrial biotechnology, and environmental biotechnology. The Journal welcomes full length original research papers, short communications, and review papers* in the following research fields: Biocatalysis (enzyme or microbial) and biotransformations, including immobilized biocatalyst preparation and kinetics Biosensors and Biodevices including biofabrication and novel fuel cell development Bioseparations including scale-up and protein refolding/renaturation Environmental Bioengineering including bioconversion, bioremediation, and microbial fuel cells Bioreactor Systems including characterization, optimization and scale-up Bioresources and Biorefinery Engineering including biomass conversion, biofuels, bioenergy, and optimization Industrial Biotechnology including specialty chemicals, platform chemicals and neutraceuticals Biomaterials and Tissue Engineering including bioartificial organs, cell encapsulation, and controlled release Cell Culture Engineering (plant, animal or insect cells) including viral vectors, monoclonal antibodies, recombinant proteins, vaccines, and secondary metabolites Cell Therapies and Stem Cells including pluripotent, mesenchymal and hematopoietic stem cells; immunotherapies; tissue-specific differentiation; and cryopreservation Metabolic Engineering, Systems and Synthetic Biology including OMICS, bioinformatics, in silico biology, and metabolic flux analysis Protein Engineering including enzyme engineering and directed evolution.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信