Biodegradable municipal solid waste: Characterization and potential use as animal feedstuffs

A study of the impact of moist-heat and dry-heat treatment processes on hazardous trace elements migration in food waste

“…In China, the contamination of hazardous trace elements seems more serious, because of the low-level source separation and inappropriate collection. According to the results of our investigation of cafeterias, waste treatment stations in residential communities, 278 and restaurant food waste treatment facilities in Suzhou, China, the average concentrations of As, Hg, Cd, Cr, and Pb (trace elements) were relatively low and were in accordance with the data reported by García et al (2005) and Chen et al (2011). However, the concentrations of trace elements in food waste gradually increase or exceed the related standards due to an increase in the range of waste collection and the complexity of waste sources, and occasionally, they were found with high amount of heavy metals in food waste (Chen et al, 2011).…”

“…Regarding sources, the concentration of trace elements in food waste was relatively low (Chen et al, 2011;García et al, 2005;Viana and Schulz, 2003). Therefore, the concentration of trace elements in the original waste, shown in Table 1, was used as a background value in this study.…”

“…In addition, regarding sources, food waste primarily derives from the residues of human food consumption, with a low background concentration of hazardous trace elements (García et al, 2005;Viana and Schulz, 2003). However, hazardous trace elements might be introduced during the process of the collection, transportation, or treatment of food waste for various reasons.…”

“…However, hazardous trace elements might be introduced during the process of the collection, transportation, or treatment of food waste for various reasons. For example, García et al (2005) found that the high amount of trace elements in food waste from household was higher than the values permitted by European legislation, due to the presence of inorganic substances such as cans, sand, metals, or other particles. Moustatsou et al (2003) reported the metal concentrations of Fe up to 157.5, Cu up to 82.5, Zn up to 31, and Ni up to 8.5 mg/L in the waste from an alcoholic anis-type beverage, mainly derived from the bronze pot stills.…”

Effect of the inclusion of food waste in pig diets on growth performance, carcass and meat quality

“…Our results on the stages of feed evaluation and processing for food waste have been previously published (Sancho et al, 2004;García et al, 2005;Pinacho et al, 2006;Esteban et al, 2007). In these studies biodegradable municipal wastes from different sources were evaluated and vegetable and fruit wastes were selected as potential animal feedstuffs after a dehydration processes because both types of wastes ensured the required microbiological quality for feed, contained all necessary nutrients to feed pigs and their composition did not depend on the place where they were generated and their seasonal variation.…”