Utilizing CO₂ in industrial off-gas for microalgae cultivation: considerations and solutions.

IF 8.1 2区工程技术 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Critical Reviews in Biotechnology Pub Date : 2024-08-01 Epub Date: 2023-07-27 DOI:10.1080/07388551.2023.2233692

Jacob G Comley, John A Scott, Corey A Laamanen

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Abstract

The utilization of microalgae to treat carbon dioxide (CO₂)-rich industrial off-gas has been suggested as both beneficial for emissions reduction and economically favorable for the production of microalgal products. Common sources of off-gases include coal combustion (2-15% CO₂), cement production (8-15% CO₂), coke production (18-23% CO₂), and ore smelting (6-7% CO₂). However, industrial off-gas also commonly contains other acid gas components [typically nitrogen oxides (NO_X) and sulfur dioxide (SO₂)] and metals that could inhibit microalgae growth and productivity. To utilize industrial off-gas effectively in microalgae cultivation systems, a number of solutions have been proposed to overcome potential inhibitions. These include bioprospecting to identify suitable strains, genetic modification to improve specific cellular characteristics, chemical additions, and bioreactor designs and operating procedures.In this review, results from microalgae experiments related to utilizing off-gas are presented, and the outcomes of different conditions discussed along with potential solutions to resolve limitations associated with the application of off-gas.

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利用工业废气中的二氧化碳培育微藻：考虑因素和解决方案。

利用微藻处理富含二氧化碳（CO2）的工业废气被认为既有利于减排，又有利于微藻产品的生产。废气的常见来源包括煤炭燃烧（2-15% CO2）、水泥生产（8-15% CO2）、焦炭生产（18-23% CO2）和矿石冶炼（6-7% CO2）。然而，工业废气通常还含有其他酸性气体成分（通常是氮氧化物 (NOX) 和二氧化硫 (SO2)）以及可能抑制微藻生长和生产力的金属。为了在微藻培养系统中有效利用工业废气，人们提出了许多解决方案来克服潜在的抑制因素。本综述介绍了与利用废气有关的微藻类实验结果，讨论了不同条件下的结果，以及解决废气应用相关限制的潜在解决方案。

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来源期刊

Critical Reviews in Biotechnology 工程技术-生物工程与应用微生物

CiteScore

20.80

自引率

1.10%

发文量

审稿时长

4.8 months

期刊介绍： Biotechnological techniques, from fermentation to genetic manipulation, have become increasingly relevant to the food and beverage, fuel production, chemical and pharmaceutical, and waste management industries. Consequently, academic as well as industrial institutions need to keep abreast of the concepts, data, and methodologies evolved by continuing research. This journal provides a forum of critical evaluation of recent and current publications and, periodically, for state-of-the-art reports from various geographic areas around the world. Contributing authors are recognized experts in their fields, and each article is reviewed by an objective expert to ensure accuracy and objectivity of the presentation.