review · Case Studies in Chemical and Environmental Engineering
Biorefineries offer sustainable pathways for generating energy, fuels, and chemicals from biomass, yet their operations yield complex and toxic effluents. These industrial waste streams often contain hazardous phenolic compounds, intense coloration, and high levels of biological and chemical oxygen demand that endanger aquatic life and human health. Effective remediation requires advanced natural, synthetic, and composite materials capable of treating these challenging contaminants. Several approaches, including physical, biological, enzymatic, Fenton, aerobic, and anaerobic processes, show promise in meeting required discharge regulations. Due to the intricate composition of biorefinery waste, relying on a single method is insufficient, making integrated or combined treatment configurations essential for optimal outcomes. Evaluating these technologies also demands careful examination of cost-effectiveness and overall sustainability to ensure that industrial wastewater management remains economically viable while safeguarding the environment.
Biorefineries are critical for sustainable fuel and chemical production, but untreated process wastewater can severely harm surrounding water bodies and public health. Establishing cost-effective, environmentally sound effluent treatment strategies enables industrial facilities to comply with environmental regulations, reduce pollutant discharge, and safeguard aquatic ecosystems without compromising economic viability.
This work informs industrial biorefinery operators, wastewater treatment plant designers, and environmental remediation firms seeking compliant effluent management. The evaluation highlights combined treatment configurations integrating biological, enzymatic, or advanced oxidation processes with specialized materials. As a review of current practices, sustainability, and costs, the covered concepts represent an overview of established and emerging techniques, serving as early-stage and applied guidance for developing regulatory-compliant remediation infrastructure.
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The need for energy, chemicals, food, and other vital survival necessities rises as the world's population is growing quickly. The production of waste materials has become a critical problem among researchers because of increased industrialization and population growth. Thus, this review addresses the pressing issue of effluents generated by biorefineries, focusing on their high biological and chemical oxygen demand (COD and BOD), vibrant colors, and hazardous phenolic chemicals like tetra chlorophenol and pentachlorophenol. Motivated by the need to mitigate the adverse effects of industrial activities on employment, life expectancy, land use, and international trade, researchers are exploring innovative methods for producing alternative materials with minimal environmental impact. Biorefineries, utilizing diverse biomass feedstocks, emerge as promising solutions for sustainable energy, chemicals, and fuel production. However, the effluents generated during biorefining processes demand rigorous treatment due to their complex composition and toxicity, posing threats to aquatic ecosystems and human health. This review provides a comprehensive exploration of recent advancements in the development and application of natural, synthetic, and composite materials for industrial effluent treatment. Various treatment approaches, such as physical, biological, enzymatic, Fenton process, aerobic, and anaerobic methods, are discussed in detail, emphasizing their effectiveness in meeting discharge regulations. Given the intricate nature of biorefinery effluents, the review underscores the necessity of employing combinations of treatment systems to achieve optimal results. Furthermore, the study delves into sustainability and cost considerations associated with the treatment of industrial effluents from biorefineries. By shedding light on the environmental consequences of these activities, the research aims to fill existing knowledge gaps, urging the scientific community to undertake further investigations. In conclusion, this work contributes to the ongoing dialogue on creative solutions for industrial effluent treatment, ensuring a balance between environmental preservation and economic viability.
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DOI: 10.1016/j.cscee.2023.100570
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