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Enhancement effect of ionizing radiation pretreatment on biogas production from anaerobic fermentation of food waste
Ist Teil von
Radiation physics and chemistry (Oxford, England : 1993), 2020-03, Vol.168, p.108534, Article 108534
Ort / Verlag
Oxford: Elsevier Ltd
Erscheinungsjahr
2020
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Anaerobic digestion has become an important technology in the treatment of food waste and the acquisition of renewable energy. However, the physicochemical properties of the fermentation substrate have a great influence on the fermentation process. The present study examined the use of radiation technology for the anaerobic digestion pretreatment of food waste. Food waste was irradiated with different doses of radiation from a Co-60 gamma source and then subjected to anaerobic digestion to produce biogas. The effects of ionizing radiation pretreatment on the dissolution of organics were also investigated. The results revealed that, for food waste that had been subjected to 8.28-kGy irradiation pretreatment, the soluble chemical oxygen demand (SCOD) increased by 70.6% from 140.1 g/L to 239.1 g/L while the biogas yield was 504 ml/g VSadd, which was an increase of 14.3% over the non-irradiated pretreatment group. Therefore, radiation technology is a novel and efficient means of pretreatment for the anaerobic digestion of food waste.
•Radiation technology was firstly used for food waste pretreatment.•The SCOD of food waste was increased by 70.6% with ionizing radiation pretreatment.•Ionizing radiation pretreatment increased biogas production of food waste by 14.3%.•Radiation pretreatment has better environmental benefits than other technologies.