Carbonate-enhanced cultivation of microalgae biofilm on the bovine serum albumin coated hollow fiber membranes

IF 3.7 3区生物学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY

Process Biochemistry Pub Date : 2025-06-17 DOI:10.1016/j.procbio.2025.06.010

Jia Xin Yap , C.P. Leo , D.J.C. Chan , Nazlina Haiza Mohd Yasin

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引用次数: 0

Abstract

Microalgae has been commercially grown to support the growth of biorefineries. Since microalgae are commonly grown using carbon dioxide from the air during biofilm cultivation, their efficiency in capturing carbon from a liquid medium remains unclear. In this study, sodium bicarbonate (NaHCO₃) with varied concentrations was added as the additional carbon source during the cultivation of Navicula incerta on the bovine serum albumin (BSA)-coated hollow fiber membranes. N. incerta, a biofilm-forming diatom known for its surface adherence and environmental robustness, was selected for its suitability in the hollow fiber membrane cultivation system. The highest growth rate of 81.7 % was obtained by adding 8 g/L of NaHCO₃, with a harvesting efficiency of 81.02 %. The carbon fixation rate of 375.45 ± 15.89 mg˖L⁻¹˖d⁻¹ and carbon consumption efficiency of 58.91 ± 6.96 % were further attained. The chlorophyll content of N. incerta also increased from 2.61 ± 0.22–4.22 ± 0.28 mg/L. The microalgae biofilm on the BSA-coated PVDF hollow fiber membranes not only absorbed carbon dioxide from the air, but also removed the carbon source from the liquid.

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微藻生物膜在牛血清白蛋白包被中空纤维膜上的碳酸盐强化培养

微藻已被商业化种植，以支持生物精炼厂的发展。由于微藻通常在生物膜培养过程中使用空气中的二氧化碳生长，因此它们从液体培养基中捕获碳的效率尚不清楚。在牛血清白蛋白（BSA）包覆的中空纤维膜上，加入不同浓度的碳酸氢钠（NaHCO3）作为额外的碳源。N. incerta是一种生物成膜硅藻，以其表面粘附性和环境鲁棒性而闻名，因其适合中空纤维膜培养系统而被选中。NaHCO3添加量为8 g/L时，生长速率最高，为81.7 %，收获效率为81.02 %。固碳率为375.45 ± 15.89 mg L−1 −1，耗碳效率为58.91 ± 6.96 %。叶绿素含量也从2.61 ± 0.22 ~ 4.22 ± 0.28 mg/L增加。微藻生物膜在bsa包被的PVDF中空纤维膜上不仅可以吸收空气中的二氧化碳，还可以去除液体中的碳源。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Process Biochemistry 生物-工程：化工

CiteScore

8.30

自引率

4.50%

发文量

374

审稿时长

53 days

期刊介绍： Process Biochemistry is an application-orientated research journal devoted to reporting advances with originality and novelty, in the science and technology of the processes involving bioactive molecules and living organisms. These processes concern the production of useful metabolites or materials, or the removal of toxic compounds using tools and methods of current biology and engineering. Its main areas of interest include novel bioprocesses and enabling technologies (such as nanobiotechnology, tissue engineering, directed evolution, metabolic engineering, systems biology, and synthetic biology) applicable in food (nutraceutical), healthcare (medical, pharmaceutical, cosmetic), energy (biofuels), environmental, and biorefinery industries and their underlying biological and engineering principles.