Dairy industry wastes

Research Program, Dairy Industry Waste as a source of Biodegradable Polymeric Materials, Wheypol. 

Treatment of dairy waste streams from CIP and other operations is not a significant portion of plant energy use, but waste from the dairy industry can contribute to the pollution of water and soil (Kosseva, 2009). 

Early routes to AA were complex and expensive. In 1927 the ethylene chlorohydrin process was introduced, but it was also still expensive, and not much commercial interest was stimulated in AA. In 1940 a process came literally right off the farm—pyrolysis of lactic acid, a waste product of the dairy industry found in sour milk. 

RO, primarily used in the dairy industry, is expanding into other areas of food processing. RO can be used for a variety of operations, ranging from wastewater treatment and material recovery to clarification and concentration. Material recovery is advantageous for two reasons. By recovering valuable products, eg, proteins, from waste streams, profits can be increased while costs for waste disposal decreased. An excellent review of the different applications ofRO in food processing is available (9). 

With the increase in the production of cheese, not only in the United States but throughout the world (USDA 1981C), and more stringent controls on disposal of waste materials, the use of surplus cheese whey is one of the most critical problems facing the dairy industry. Whey, the liquid that remains after casein and fat are separated as curds in... 

Anaerobic treatment applications for dairy industry wastewaters have been evaluated in a number of previous studies (Backman et al., 1985 Barford et al., 1986 Clanton et al., 1985 Hills and Kayhanian, 1985 Lo and Liao, 1986a,b Lo et al., 1987 Mendez et al., 1989 Samson et al., 1985 Toldra et al., 1987). More recent information about anaerobic treatment practices of dairy waste streams is also presented by Demirel et al. (2005) (Tables 3.8 and 3.9). 

Backman, RC, Blanc, FC, and O shaughnessy, JC (1985). Treatment of dairy wastewater by the anaerobic up-flow packed bed reactor. In "Proceedings of 40th Purdue Industrial Waste Conference" pp. 361-372. 

Samson, R, Van den Berg, B, Peters, R, and Claude, H. (1985). Dairy waste treatment using industrial scale fixed-film and upflow sludge bed anaerobic digesters Design and startup experience. In Proceedings of 39thPurdue Industrial Waste Conference", pp. 235-241. 

Whey from the dairy industry is a waste product. Research is being conducted on biotechnological systems for upgrading lactose in whey to human health-care and cosmetic products. 

Flotaiion is a powerful mineral beneficialion tool that has wide potential in effluent treatments in tbe following industries 32 oil industry, engineering industry wastes, dairy wastes, food industry, textile fiber wastes, cellulose fibers, rubber wastes, asbestos wastes, polymeric wastes, paper industry wastes, dyes, electroplating industry, vegetable wastes, poultry processing wastes... 

This study shows that A. succinogenes 130Z can effectively convert cheese whey to succinic acid. Therefore, cheese whey, waste stream from dairy industry, can be used in the cost-effective fermentative production of succinic acid. 

Proteinaceous material such as horn, feather, nail, hair, and cheese whey occur in nature as waste and can be converted, by proteases, into liquid concentrates or dry solids with high protein content and of nutritional value for food and feed. Thus, proteases provide potential application for the management of residues from various food processing industries such as poultry and cattle slaughterhouses and fishing and dairy industries [5, 6],... 

Different other wastes can also be considered [27], such as carbohydrates molasses, starch and whey [69], cellulose hydrolysates [e.g., paper industry waste) alcohols wastes from biodiesel production, methanol plus glycerol, methanol fats and oils lipids from plant and animal wastes organic acids lactic acid from the dairy industry. 

Sarkar, B., Chakrabarti, P. P, Vijaykumar, A., and Kale, V., Waste water treatment in dairy industries—Possibility of reuse. Desalination, 195, 141, 2006. 

In addition to their main components, complex waste streams can contain additional substances that make them advantageous in direct comparison with pure and expensive substrates. For example, the permeate of surplus whey from the dairy industry provides the production strain in bioprocesses not only with a rich source of the carbohydrate lactose, but also with minor components such as minerals and protein residues that have positive impacts on the microbial cultivation. Additionally, beneficial growth components such as vitamins and biotin are reported to be available from complex, unrefined resources such as molasses (reviewed by Purushothaman et al. 2(X)1). 

Dairy Products Industry Wastes Industry Description... 

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