Optimization of strontium removal by Tetraselmis chui grown in bubble column photobioreactors

IF 4.6 2区生物学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Algal Research-Biomass Biofuels and Bioproducts Pub Date : 2024-09-16 DOI:10.1016/j.algal.2024.103716

Inés Segovia-Campos , Montserrat Filella , Muhammad Saad Bin Zahid , Luísa Barreira , Karl Perron , Daniel Ariztegui

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Abstract

Green microalgae of the class Chlorodendrophyceae have recently attracted the interest of researchers due to their ability to form micropearls (intracellular inclusions of amorphous calcium carbonate) highly enriched in Sr. The marine species Tetraselmis chui (included in the class Chlorodendrophyceae) shows high uptake of both stable and radioactive Sr isotopes and has been suggested as a potential candidate for the development of new bioremediation tools regarding radioactive ⁹⁰Sr pollution. In this study, we optimized Sr removal from seawater by growing T. chui in 1-L bubble column photobioreactors (PBRs) with and without CO₂ supply. Culturing T. chui in bubble column PBRs greatly improves cell production and Sr removal compared to previous studies. Furthermore, the addition of 10 mL L⁻¹ h⁻¹ CO₂ further accelerates T. chui growth and results in better Sr removal rates. This study presents promising results for the development of new bioremediation methods to treat ⁹⁰Sr pollution.

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优化在气泡柱光生物反应器中生长的 Tetraselmis chui 对锶的去除效果

海洋物种 Tetraselmis chui（包括在 Chlorodendrophyceae 类中）显示出对稳定和放射性 Sr 同位素的高吸收率，并被认为是针对放射性 90Sr 污染开发新型生物修复工具的潜在候选者。在本研究中，我们通过在有二氧化碳供应和无二氧化碳供应的 1-L 气泡柱光生物反应器（PBR）中培养 T. chui，优化了从海水中去除 Sr 的过程。与之前的研究相比，在气泡柱光生物反应器中培养 T. chui 大大提高了细胞产量和硒去除率。此外，添加 10 mL L-1 h-1 CO2 可进一步加速 T. chui 的生长，并提高硒的去除率。这项研究为开发新的生物修复方法处理 90Sr 污染提供了可喜的成果。

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来源期刊

Algal Research-Biomass Biofuels and Bioproducts BIOTECHNOLOGY & APPLIED MICROBIOLOGY-

CiteScore

9.40

自引率

7.80%

发文量

332

期刊介绍： Algal Research is an international phycology journal covering all areas of emerging technologies in algae biology, biomass production, cultivation, harvesting, extraction, bioproducts, biorefinery, engineering, and econometrics. Algae is defined to include cyanobacteria, microalgae, and protists and symbionts of interest in biotechnology. The journal publishes original research and reviews for the following scope: algal biology, including but not exclusive to: phylogeny, biodiversity, molecular traits, metabolic regulation, and genetic engineering, algal cultivation, e.g. phototrophic systems, heterotrophic systems, and mixotrophic systems, algal harvesting and extraction systems, biotechnology to convert algal biomass and components into biofuels and bioproducts, e.g., nutraceuticals, pharmaceuticals, animal feed, plastics, etc. algal products and their economic assessment