Treatment and utilization of dairy industrial waste: A review

Publication date: Available online 10 April 2019Source: Trends in Food Science & TechnologyAuthor(s): Talha Ahmad, Rana Muhammad Aadil, Haassan Ahmed, Ubaid ur Rahman, Bruna C.V. Soares, Simone L.Q. Souza, Tatiana C. Pimentel, Hugo Scudino, Jonas T. Guimarães, Erick A. Esmerino, Mônica Q. Freitas, Rafael B. Almada, Simone M.R. Vendramel, Marcia C. Silva, Adriano G. CruzAbstractBackgroundDemand of dairy products is increasing in different countries, which results in the development of the dairy industry and increases in the generation of wastes. The main wastes generated are whey, dairy sludges and wastewater (processing, cleaning and sanitary). They have high nutrient concentration, biological oxygen demand (BOD), chemical oxygen demand (COD) and organic and inorganic contents. Furthermore, they can contain different sterilizing agents and a wide range of acid and alkaline detergents. Pollution due to dairy industry affects the air, soil and water quality.Scope and approachThis review aims to describe the different methods used by the dairy industry to treat wastes, highlighting their effects on quality and efficiency removal of the pollution. Especially, it focusses on biotechnological alternatives to utilize the dairy wastes.Key findings and conclusionsPhysico-chemical, biological, and biotechnological methods can be used for treatment of dairy wastewaters. The physico-chemical treatment is used for reduction of milk fat and protein colloids, but it has the disadvantages ...
Source: Trends in Food Science and Technology - Category: Food Science Source Type: research