Low pH as an inhibiting factor in the transition from mesophilic to thermophilic phase in composting

Sammanfattning

During composting of household waste, the acidity of the material affects the process during the initial phase of rising temperature. In this study, the effects of temperature (36-46 degreesC) and pH (4.6-9.2) on the respiration rate during the early phase of composting were investigated in two different composts. A respiration method where small compost samples were incubated at constant temperature was used. The respiration rate was strongly reduced at 46 degreesC and pH below 6, compared to composts with a higher pH or lower temperature. The combination of high temperature and low pH is a possible adverse factor in large-scale composting of food waste. (C) 2004 Elsevier Ltd. All rights reserved

Nyckelord

Organic waste; Household waste; Compost; pH; Temperature; Carbon dioxide; Organic acids; Mesophilic; Thermophilic

Publicerad i

Bioresource Technology
2004, volym: 95, nummer: 2, sidor: 145-150
Utgivare: ELSEVIER SCI LTD

SLU författare

• Jönsson, Håkan

  • Institutionen för energi och teknik, Sveriges lantbruksuniversitet
    

• Smårs, Sven

  • Institutionen för energi och teknik, Sveriges lantbruksuniversitet
    

• Sundberg, Cecilia

  • Institutionen för energi och teknik, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Miljö- och naturvårdsvetenskap

Publikationens identifierare

• DOI: https://doi.org/10.1016/j.biortech.2004.01.016

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/4226