Singh Har Mohan, Sharma Mriduta, Tyagi V V, Goria Kajol, Buddhi D, Sharma Atul, Bruno Frank, Sheoran Shane, Kothari Richa
School of Energy Management, Shri Mata Vaishno Devi University, Katra, J&K, 182320, India.
School of Energy Management, Shri Mata Vaishno Devi University, Katra, J&K, 182320, India.
J Environ Manage. 2023 Jul 1;337:117591. doi: 10.1016/j.jenvman.2023.117591. Epub 2023 Mar 28.
In this review article, waste materials (biogenic/non-biogenic) are focused as the flocculants for harvesting of algal biomass. Chemical flocculants are widely utilized for the effective harvesting of algal biomass at a commercial scale while the high cost is a major drawback. The waste materials-based flocculants (WMBF) are started to utilize as one of the cost-effective performance for dual benefits of waste minimization and reuse for sustainable recovery of biomass. The novelty of the article is articulated with the objective that presents an insight of WMBF, classification of WMBF, preparation methods of WMBF, mechanisms of flocculation, factors affecting flocculation-mechanism, challenges and future recommendations that are required for harvesting of algae. The WMBF are shown similar flocculation mechanisms and flocculation efficiencies as chemical flocculants. Thus, the utilization of waste material for the flocculation process of algal cells minimizes the waste load into the environment and transforms the waste materials into valuable resources.
在这篇综述文章中，废弃物（生物源/非生物源）被作为用于收获藻类生物质的絮凝剂进行重点阐述。化学絮凝剂在商业规模上被广泛用于有效收获藻类生物质，但其高成本是一个主要缺点。基于废弃物的絮凝剂（WMBF）开始被用作一种具有成本效益的方法，以实现减少废弃物和将其再利用以可持续回收生物质的双重效益。本文的新颖之处在于，其目的是深入介绍WMBF、WMBF的分类、WMBF的制备方法、絮凝机制、影响絮凝机制的因素、藻类收获所需面对的挑战以及未来建议。WMBF表现出与化学絮凝剂相似的絮凝机制和絮凝效率。因此，利用废弃物进行藻类细胞的絮凝过程可减少进入环境的废弃物负荷，并将废弃物转化为有价值的资源。
