A review on processes for whey and dairy wastewater treatment and valorization

Valeria Caltzontzin Rabell, C. Gutiérrez‐Antonio, J. Trejo, A. Feregrino-Pérez
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Abstract

The dairy industry generates a significant amount, around 150 million tons, of losses and wastes. Particularly, whey requires treatment due to their high nutrient content and therefore, its facility to pollute. This treatment also allows its revalorization. Among the main processes that have been reported are the biochemical ones, where anaerobic fermentation is used to produce ethanol, biological processes with microalgae, for the production of fatty acids and some chemicals, and other processes, such as physical or enzymatic. If these processes are integrated, a biorefinery can be designed where the objective is to obtain a diversity of products from a biomass. Some approaches, to the use of dairy wastes in a biorefinery scheme, were reviewed. There is one biological treatment, insects, which have become of interest due to their high conversion efficiency and wide variety of products, such as protein, biofuels or chemicals, generated from waste. Specifically, black soldier fly larvae have been considered for waste degradation. Based on their advantages, the use of insects in a biorefinery scheme using dairy waste as feedstock was proposed.
乳清和乳制品废水处理及增值技术综述
乳制品行业产生了大量的损失和浪费,约为1.5亿吨。特别是乳清,由于其高营养含量,需要处理,因此,它的设施污染。这种处理也允许其重新估值。已报道的主要过程包括生化过程,其中厌氧发酵用于生产乙醇,微藻生物过程,用于生产脂肪酸和一些化学品,以及其他过程,如物理或酶。如果将这些过程结合起来,就可以设计生物精炼厂,其目标是从生物质中获得多种产品。综述了在生物炼制方案中利用乳制品废物的一些方法。有一种生物处理方法,昆虫,由于其高转化效率和从废物中产生的多种产品,如蛋白质、生物燃料或化学品,已引起人们的兴趣。具体来说,黑兵蝇幼虫已被考虑用于废物降解。基于昆虫的优点,提出了利用昆虫在乳品废弃物为原料的生物炼制方案。
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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