Effect of Process Parameters on Chitosan-mediated Microalgae Flocculation

IF 1.6 4区生物学 Q4 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Chemical and Biochemical Engineering Quarterly Pub Date : 2023-07-03 DOI:10.15255/cabeq.2022.2152

S. Akiş, B. Inan, D. Özçimen

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引用次数: 0

Abstract

Today, microalgae have received considerable interest as an alternative feedstock for biofuel, animal feed, human food, and pharmaceuticals because they possess valuable oils and biomolecules. The main problem of the cost of microalgae production is generally associated with the harvesting process. Flocculation is an effective method to harvest microalgal biomass and minimize the operating cost. In this study, the effect of the chitosan solution, different pH conditions, and flocculation time on flocculation process of Chlorella minutissima and Nannochloropsis oculata were investigated, and the obtained data were evaluated statistically. Flocculation efficiency of C. minutissima and N. ocula ta were the highest under the conditions of 10 pH, 100 mg L –1 chitosan concentration, and flocculation time of 60 min, and found as 97 % and 85 %. It was also found that chitosan flocculation could be improved with pH increase. This study showed that chitosan is a favorable flocculant because of its high efficiency, being non-toxic, and en-abling the reusability of the growth medium after flocculation.

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工艺参数对壳聚糖介导微藻絮凝的影响

如今，微藻作为生物燃料、动物饲料、人类食品和药物的替代原料受到了极大的兴趣，因为它们拥有宝贵的油脂和生物分子。微藻生产成本的主要问题通常与收获过程有关。絮凝是收获微藻生物量、降低运行成本的有效方法。本研究考察了壳聚糖溶液、不同pH条件和絮凝时间对微小小球藻和眼小球藻絮凝过程的影响，并对所得数据进行了统计评价。在pH值为10、壳聚糖浓度为100 mg L–1、絮凝时间为60 min的条件下，微小C.minutissima和N.oculata的絮凝效率最高，分别为97%和85%。研究还发现，随着pH值的升高，壳聚糖的絮凝作用也有所改善。本研究表明，壳聚糖是一种良好的絮凝剂，具有高效、无毒、絮凝后可重复使用等优点。

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来源期刊

Chemical and Biochemical Engineering Quarterly 工程技术-工程：化工

CiteScore

2.70

自引率

6.70%

发文量

审稿时长

>12 weeks

期刊介绍： The journal provides an international forum for presentation of original papers, reviews and discussions on the latest developments in chemical and biochemical engineering. The scope of the journal is wide and no limitation except relevance to chemical and biochemical engineering is required. The criteria for the acceptance of papers are originality, quality of work and clarity of style. All papers are subject to reviewing by at least two international experts (blind peer review). The language of the journal is English. Final versions of the manuscripts are subject to metric (SI units and IUPAC recommendations) and English language reviewing. Editor and Editorial board make the final decision about acceptance of a manuscript. Page charges are excluded.