Recovery of carboxylic acids produced during dark fermentation of food waste by adsorption on Amberlite IRA-67 and activated carbon

Ahasa Yousuf, Fabian Bonk, Juan-Rodrigo Bastidas Oyanedel, Jens Ejbye Schmidt*

*Kontaktforfatter for dette arbejde

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Abstrakt

Amberlite IRA-67 and activated carbon were tested as promising candidates for carboxylic acid recoveryby adsorption. Dark fermentation was performed without pH control and without addition of externalinoculum at 37°C in batch mode. Lactic, acetic and butyric acids, were obtained, after 7 days of fermen-tation. The maximum acid removal, 74%, from the Amberlite IRA-67 and 63% from activated carbon wasobtained from clarified fermentation broth using 200 gadsorbent/Lbrothat pH 3.3. The pH has significanteffect and pH below the carboxylic acids pKa showed to be beneficial for both the adsorbents. Theun-controlled pH fermentation creates acidic environment, aiding in adsorption by eliminating use ofchemicals for efficient removal. This study proposes simple and easy valorization of waste to valuablechemicals.
OriginalsprogEngelsk
TidsskriftBioresource Technology
Vol/bind217
Sider (fra-til)137-140
ISSN0960-8524
DOI
StatusUdgivet - okt. 2016
Udgivet eksterntJa
BegivenhedInternational Conference on Solid Waste: Knowledge Transfer for Sustainable Resource Management - Hong Kong Convention and Exhibition Centre, Hong Kong, Hong Kong
Varighed: 19. maj 201523. maj 2015

Konference

KonferenceInternational Conference on Solid Waste
LokationHong Kong Convention and Exhibition Centre
LandHong Kong
ByHong Kong
Periode19/05/201523/05/2015

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