TY - JOUR
T1 - Bioconversion of industrial wastewater from palm oil processing to butanol by Clostridium saccharoperbutylacetonicum N1-4 (ATCC 13564)
AU - Hipolito, Cirilo Nolasco
AU - Crabbe, Edward
AU - Badillo, Carmen Monterrubio
AU - Zarrabal, Octavio Carvajal
AU - Morales Mora, Miguel A.
AU - Flores, Gabriel Pineda
AU - Hernández Cortazar, Manuel de A.
AU - Ishizaki, Ayaaki
PY - 2008/3
Y1 - 2008/3
N2 - The feasibility of utilizing enzymatic hydrolysates of separator sludge, a palm oil mill effluent, and sago starch in the acetone-butanol-ethanol fermentation by Clostridium saccharoperbutylacetonicum N1-4 (ATCC 13564) was investigated. The sludge hydrolysate was used as a growth medium substitute, a fermentation substrate, and as a source of nitrogen and micronutrients. Butanol produced, 3.50 g l-1, was the same when the sludge hydrolysate was used as a second (refreshing) growth medium. As a substrate, initial nitrogen gas sparging shortened the lag phase which then enhanced butanol production. Fermentation without pH control enhanced butanol productivity whereas controlled fermentation at pH 5.5 and 5.8 progressively favored acid production while redox dyes, methyl and benzyl viologen, neutral red and methylene blue, had no effect on solvent production. As a source of nitrogen and micronutrients in sago starch hydrolysate, the final butanol concentration, 10.4 g l-1, was comparable to that in glucose and sago starch hydrolysate media supplemented with tryptone-yeast-acetate (TYA) medium components medium, although productivity was low. Cell growth, butanol and total solvent productivity in TYA-supplemented sago starch hydrolysate and glucose media were the same.
AB - The feasibility of utilizing enzymatic hydrolysates of separator sludge, a palm oil mill effluent, and sago starch in the acetone-butanol-ethanol fermentation by Clostridium saccharoperbutylacetonicum N1-4 (ATCC 13564) was investigated. The sludge hydrolysate was used as a growth medium substitute, a fermentation substrate, and as a source of nitrogen and micronutrients. Butanol produced, 3.50 g l-1, was the same when the sludge hydrolysate was used as a second (refreshing) growth medium. As a substrate, initial nitrogen gas sparging shortened the lag phase which then enhanced butanol production. Fermentation without pH control enhanced butanol productivity whereas controlled fermentation at pH 5.5 and 5.8 progressively favored acid production while redox dyes, methyl and benzyl viologen, neutral red and methylene blue, had no effect on solvent production. As a source of nitrogen and micronutrients in sago starch hydrolysate, the final butanol concentration, 10.4 g l-1, was comparable to that in glucose and sago starch hydrolysate media supplemented with tryptone-yeast-acetate (TYA) medium components medium, although productivity was low. Cell growth, butanol and total solvent productivity in TYA-supplemented sago starch hydrolysate and glucose media were the same.
KW - Acetone-butanol-ethanol fermentation
KW - Clostridium saccharoperbutylacetonicum N1-4 (ATCC 13564)
KW - Palm oil mill effluent
KW - Redox dyes
KW - Sago starch
UR - http://www.scopus.com/inward/record.url?scp=36549089518&partnerID=8YFLogxK
U2 - 10.1016/j.jclepro.2007.02.005
DO - 10.1016/j.jclepro.2007.02.005
M3 - Artículo
SN - 0959-6526
VL - 16
SP - 632
EP - 638
JO - Journal of Cleaner Production
JF - Journal of Cleaner Production
IS - 5
ER -