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Impact of food industrial waste on anaerobic co-digestion of sewage sludge and pig manure

In English

Författare

Summary, in English

The performance of an anaerobic digestion process is much dependent on the type and the composition of the material to be digested. The effects on the degradation process of co-digesting different types of waste were examined in two laboratory-scale studies. In the first investigation, sewage sludge was co-digested with industrial waste from potato processing. The co-digestion resulted in a low buffered system and when the fraction of starch-rich waste was increased, the result was a more sensitive process, with process overload occurring at a lower organic loading rate (OLR). In the second investigation, pig manure, slaughterhouse waste, vegetable waste and various kinds of industrial waste were digested. This resulted in a highly buffered system as the manure contributed to high amounts of ammonia. However, it is important to note that ammonia might be toxic to the micro-organisms. Although the conversion of volatile fatty acids was incomplete the processes worked well with high gas yields, 0.8-1.0 m(3) kg(-1) VS. (C) 2004 Elsevier Ltd. All rights reserved.

Publiceringsår

2004

Språk

Engelska

Sidor

101-107

Publikation/Tidskrift/Serie

Journal of Environmental Management

Volym

70

Issue

2

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Industrial Biotechnology

Nyckelord

  • Alkalinity
  • Anaerobic
  • Biogas
  • Co-digestion
  • Manure
  • Sewage sludge
  • Slaughterhouse waste
  • Vegetable waste

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0301-4797