TY - JOUR
T1 - Process intensification strategies for enhanced holocellulose solubilization
T2 - Beneficiation of pineapple peel waste for cleaner butanol production
AU - Khedkar, Manisha A.
AU - Nimbalkar, Pranhita R.
AU - Kamble, Sanjay P.
AU - Gaikwad, Shashank G.
AU - Chavan, Prakash V.
AU - Bankar, Sandip B.
PY - 2018/10/20
Y1 - 2018/10/20
N2 - Biorefinery sector has become a serious dispute for cleaner and sustainable development in recent years. In the present study, pretreatment of pineapple peel waste was carried out in high pressure reactor using various pretreatment-enhancers. The type and concentration effect of each enhancer on hemicellulose solubilization was systematically investigated. The binary acid (phenol + sulfuric acid) at 180 °C was found to be superior amongst other studied enhancers, giving 81.17% (w/v) hemicellulose solubilization in liquid-fraction under optimized conditions. Solid residue thus obtained was subjected to enzymatic hydrolysis that resulted into 24.50% (w/v) cellulose breakdown. Treated solid residue was further characterized by scanning electron microscopy and fourier transform infrared spectroscopy to elucidate structural changes. The pooled fractions (acid treated and enzymatically hydrolyzed) were fermented using Clostridium acetobutylicum NRRL B 527 which resulted in butanol production of 5.18 g/L with yield of 0.13 g butanol/g sugar consumed. Therefore, pretreatment of pineapple peel waste evaluated in this study can be considered as milestone in utilization of low cost feedstock, for bioenergy production.
AB - Biorefinery sector has become a serious dispute for cleaner and sustainable development in recent years. In the present study, pretreatment of pineapple peel waste was carried out in high pressure reactor using various pretreatment-enhancers. The type and concentration effect of each enhancer on hemicellulose solubilization was systematically investigated. The binary acid (phenol + sulfuric acid) at 180 °C was found to be superior amongst other studied enhancers, giving 81.17% (w/v) hemicellulose solubilization in liquid-fraction under optimized conditions. Solid residue thus obtained was subjected to enzymatic hydrolysis that resulted into 24.50% (w/v) cellulose breakdown. Treated solid residue was further characterized by scanning electron microscopy and fourier transform infrared spectroscopy to elucidate structural changes. The pooled fractions (acid treated and enzymatically hydrolyzed) were fermented using Clostridium acetobutylicum NRRL B 527 which resulted in butanol production of 5.18 g/L with yield of 0.13 g butanol/g sugar consumed. Therefore, pretreatment of pineapple peel waste evaluated in this study can be considered as milestone in utilization of low cost feedstock, for bioenergy production.
KW - Biobutanol
KW - Enzymatic hydrolysis
KW - Hemicellulose solubilization
KW - Pineapple peel
KW - Steam explosion
UR - http://www.scopus.com/inward/record.url?scp=85053085542&partnerID=8YFLogxK
U2 - 10.1016/j.jclepro.2018.07.205
DO - 10.1016/j.jclepro.2018.07.205
M3 - Article
AN - SCOPUS:85053085542
SN - 0959-6526
VL - 199
SP - 937
EP - 947
JO - Journal of Cleaner Production
JF - Journal of Cleaner Production
ER -
