Environmental Advances Due to the Integration of Food Industries and Anaerobic Digestion for Biogas Production: Perspectives of the Italian Milk and Dairy Product Sector

Abstract

Assessing archeal indicators of performance by RT-qPCR methods during anaerobic co-digestion of organic wastes.

Treatment of dairy waste by anaerobic co-digestion with sewage sludge

“…Their hydrolysis is based on decomposition into glycerol and palmitic acid (18) and linoleic acid (19). The two acids are decomposed in the acidogenic phase into simpler chemical compounds, denoted as A P to G P for palmitic, and A L to H L for linoleic acid (20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30)(31)(32). The products of decomposition of the two acids comprise, essentially, the following: ethyl alcohol; 2-oxopropanoic acid; 1,4-butanedioic acid; 2-hydroxypropanoic acid; propan-2-one; methyl alcohol and methanoic acid.…”

“…Buttermilk -just as cheese whey -is characterized by high concentrations of soluble organic matter and is readily biodegradable; this makes this residue particularly suitable for anaerobic digestion. Buttermilk waste, as a product of the dairy industry, can be utilized as a substrate for biogas plants, in co-fermentation with other waste types, such as cattle slurry [22]. In contrast to cheese whey, no reports have been found in literature describing studies dedicated to digestion of buttermilk as a sole material.…”

Anaerobic granular reactors for the treatment of dairy wastewater: A review

“…; Traversi et al . ). Dairy process wastewaters are typically high‐strength effluents with high concentrations of organic matter, suspended solids and oil–grease along with varying amounts of other pollutants (Table ).…”

A review on fermentative hydrogen production from dairy industry wastewater

“…Dairy processing is a high volume water‐consuming industry with water use throughout all process steps including cleaning, sanitization, heating, cooling and floor washing; while wastewater volumes generally range between 2‐ and 3‐fold the volume of processed milk . Dairy plants generate wastewater flows with characteristics that are heavily dependent on the raw materials used, the processing technology and the recovery rate of effluent wastewater .…”