Improved anaerobic biodegradability of wheat straw, solid cattle manure and solid slaughterhouse by alkali, ultrasonic and alkali-ultrasonic pre-treatment
Visualitza/Obre
Data de publicació
2018-09-07ISSN
0959-3330
Resum
Wheat straw and animal wastes are important feedstock for biogas production in Europe. Yet, the high content of lignocellulosic and refractory materials causes the process to be relatively slow. Therefore, pretreatment methods have been proposed to shorten the hydrolysis phase. The present study examined the effectiveness of alkali pre-treatment (AP), ultrasonic pre-treatment (UP), and alkali-ultrasonic pre-treatment (AUP) applied on wheat straw (WS), solid fraction of cattle manure (SCM) and solid fraction of slaughterhouse waste (SSHW), by monitoring solubilisation ratio, anaerobic biodegradability and methane yield. The results indicate that the solubilisation ratio of the substrates improved regardless of the types of pre-treatment applied. Though, AP was more effective on WS and SSHW than other pre-treatments (UP and AUP), with approximately 47% and 17% extra methane, respectively. Moreover, AP of SCM caused an increased in methane production rate by 100% and minimised lag phase from 16 days to 1 day during anaerobic digestion. Based on Danish conditions, only AP of WS was economical prior to the biogas process due to high extra methane yield. A positive energy budget of 8 € t−1 VS was calculated. High-energy consumption during UP and AUP in laboratory scale hindered the positive benefits of these pre-treatments.
Tipus de document
Article
Versió del document
Versió acceptada
Llengua
English
Matèries (CDU)
63 - Agricultura. Silvicultura. Zootècnia. Caça. Pesca
Pàgines
36
Publicat per
Taylor & Francis
Publicat a
Environmental Technology
Citació
Radziah, Wahid, Maycoll Romero-Guiza, Verónica Moset, Henrik Bjarne Møller and Belén Fernández. 2020. "Improved anaerobic biodegradability of wheat straw, solid cattle manure and solid slaughterhouse by alkali, ultrasonic and alkali-ultrasonic pre-treatment". Environmental Technology, 41:8, 997-1006. Taylor & Francis. doi:10.1080/09593330.2018.1516802.
Programa
Sostenibilitat en Biosistemes
Aquest element apareix en la col·lecció o col·leccions següent(s)
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