Microalgal biohydrogen production: Mechanisms, current trends, barriers, economic viability, and CO2 utilization

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy Pub Date : 2025-10-20 DOI:10.1016/j.biombioe.2025.108480

Ali Abdullah Al Qadri , Usama Ahmed , Sagheer A. Onaizi , Shaikh Abdur Razzak , Ahmad Nawaz

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引用次数: 0

Abstract

Renewable energy production through microalgal biohydrogen systems enables sustainable conversion of CO₂ waste streams into renewable energy. A critical evaluation has been conducted on current biohydrogen production advancements regarding living microalgae chemical elements and metabolic processes together with process enhancement techniques. The article investigates integrated system concepts which unite photobiological production techniques of clean hydrogen with dark fermentation technologies while processing wastewater systems and implementing thermochemical modules. By optimizing microalgal strains and cultivation conditions for enhanced CO₂ fixation efficiency, and co-locating production facilities with industrial emission sources, the proposed system aims to create a closed-loop, carbon-neutral biorefinery. The key innovations of this approach lie in the synergistic integration of various technologies to overcome the limitations of current microalgal biohydrogen production systems, which often suffer from low productivity, high operational costs, and challenges in capture and separation. Through detailed process modeling and feasibility analyses, this study evaluates the technical and economic viability of the proposed integrated system, including sensitivity analyses on critical parameters such as CO₂ input requirements. The review also provides a comprehensive technical and economic comparison between microalgal biohydrogen and other hydrogen production technologies, highlighting the competitive advantages of the proposed integrated system. Overall, this transformative approach to CO₂ utilization through microalgal biohydrogen production offers a sustainable solution that can simultaneously address the challenges of renewable energy generation and carbon emissions reduction. By creating a circular economy around CO₂ resources, this innovative technology holds the potential to significantly contribute to a low-carbon future.

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微藻生物制氢：机制、当前趋势、障碍、经济可行性和二氧化碳利用

通过微藻生物氢系统生产可再生能源能够将二氧化碳废物流可持续地转化为可再生能源。对目前微藻生物制氢的化学元素和代谢过程以及工艺强化技术进行了批判性评价。本文研究了在处理废水系统和实施热化学模块时，将清洁氢的光生物生产技术与暗发酵技术结合起来的集成系统概念。通过优化微藻菌株和培养条件以提高二氧化碳固定效率，并将生产设施与工业排放源共同配置，该系统旨在创建一个闭环、碳中性的生物精炼厂。该方法的关键创新在于各种技术的协同集成，以克服当前微藻生物制氢系统的局限性，这些系统通常存在生产率低、运营成本高以及捕获和分离方面的挑战。通过详细的过程建模和可行性分析，本研究评估了拟议集成系统的技术和经济可行性，包括对二氧化碳输入要求等关键参数的敏感性分析。本文还对微藻生物制氢技术与其他制氢技术进行了全面的技术和经济比较，突出了所提出的集成系统的竞争优势。总的来说，这种通过微藻生物制氢来利用二氧化碳的变革性方法提供了一种可持续的解决方案，可以同时解决可再生能源发电和减少碳排放的挑战。通过围绕二氧化碳资源创造循环经济，这项创新技术有可能为低碳未来做出重大贡献。

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

Biomass & Bioenergy 工程技术-能源与燃料

CiteScore

11.50

自引率

3.30%

发文量

258

审稿时长

60 days

期刊介绍： Biomass & Bioenergy is an international journal publishing original research papers and short communications, review articles and case studies on biological resources, chemical and biological processes, and biomass products for new renewable sources of energy and materials. The scope of the journal extends to the environmental, management and economic aspects of biomass and bioenergy. Key areas covered by the journal: • Biomass: sources, energy crop production processes, genetic improvements, composition. Please note that research on these biomass subjects must be linked directly to bioenergy generation. • Biological Residues: residues/rests from agricultural production, forestry and plantations (palm, sugar etc), processing industries, and municipal sources (MSW). Papers on the use of biomass residues through innovative processes/technological novelty and/or consideration of feedstock/system sustainability (or unsustainability) are welcomed. However waste treatment processes and pollution control or mitigation which are only tangentially related to bioenergy are not in the scope of the journal, as they are more suited to publications in the environmental arena. Papers that describe conventional waste streams (ie well described in existing literature) that do not empirically address ''new'' added value from the process are not suitable for submission to the journal. • Bioenergy Processes: fermentations, thermochemical conversions, liquid and gaseous fuels, and petrochemical substitutes • Bioenergy Utilization: direct combustion, gasification, electricity production, chemical processes, and by-product remediation • Biomass and the Environment: carbon cycle, the net energy efficiency of bioenergy systems, assessment of sustainability, and biodiversity issues.