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.
|Status||Udgivet - okt. 2016|
|Begivenhed||International Conference on Solid Waste: Knowledge Transfer for Sustainable Resource Management - Hong Kong Convention and Exhibition Centre, Hong Kong, Hong Kong|
Varighed: 19. maj 2015 → 23. maj 2015
|Konference||International Conference on Solid Waste|
|Lokation||Hong Kong Convention and Exhibition Centre|
|Periode||19/05/2015 → 23/05/2015|