Maximization of volatile fatty acids production from alginate in acidogenesis.
In this study, the response surface methodology (RSM) was applied to determine the optimum fermentative condition of alginate with the respect to the simultaneous effects of alginate concentration and initial pH to maximize the production of total volatile fatty acids (TVFAs) and alcohols. The results showed that the alginate fermentation was significantly affected by initial pH than by alginate concentration and there was no interaction between the two variables. The optimum condition was 6.2g alginate/L and initial pH 7.6 with a maximum TVFAs yield of 37.1%. Acetic acids were the main constituents of the TVFAs mixtures (i.e., 71.9-95.5%), while alcohols (i.e., ethanol, butanol, and propanol) were not detected.
Department of Chemical Engineering, Pukyong National University, 365 Sinseon-ro, Nam-gu, Busan 608-739, Republic of Korea.
Hong Duc
HD
Pham
Jiyun
J
Seon
Seong Chan
SC
Lee
Minkyung
M
Song
Hee-Chul
HC
Woo
D000143:Acids / Q000378:metabolism*; D000464:Alginates / Q000378:metabolism*; D000693:Anaerobiosis; D005232:Fatty Acids, Volatile / Q000096:biosynthesis*; D020723:Glucuronic Acid / Q000378:metabolism; D006603:Hexuronic Acids / Q000378:metabolism; D008962:Models, Theoretical
D000143:Acids; D000464:Alginates; D005232:Fatty Acids, Volatile; D006603:Hexuronic Acids; D020723:Glucuronic Acid
Alginate; Anaerobic fermentation; Marine brown algae; Response surface methodology; Volatile fatty acids