TY - JOUR
T1 - Ferric chloride assisted plasma pretreatment of lignocellulose
AU - Ravindran, Rajeev
AU - Sarangapani, Chaitanya
AU - Jaiswal, Swarna
AU - Cullen, P. J.
AU - Jaiswal, Amit K.
N1 - Publisher Copyright:
© 2017 Elsevier Ltd
PY - 2017
Y1 - 2017
N2 - In this study, a novel pretreatment for spent coffee waste (SCW) has been proposed which combines two techniques viz. atmospheric air plasma and FeCl3 to create a superior pretreatment that involves Fenton chemistry. The pretreatment was optimised employing Taguchi Design of Experiments, and five parameters were taken into consideration viz. biomass loading, FeCl3 concentration, H2SO4 concentration, plasma discharge voltage and treatment time. The composition analysis of the pretreated SCW revealed substantial amounts of lignin removal, with a maximum for process conditions of 70 kV for 2 min in an acidic environment containing 1% H2SO4. FTIR, XRD and DSC were performed to characterise the samples. The pretreated SCW after enzymatic hydrolysis yielded 0.496 g of reducing sugar/g of SCW. The hydrolysate was subjected to fermentation by S. cerevisiae and led to the production of 18.642 g/l of ethanol with a fermentation efficiency of 74%, which was a two fold increase in yield compared to the control.
AB - In this study, a novel pretreatment for spent coffee waste (SCW) has been proposed which combines two techniques viz. atmospheric air plasma and FeCl3 to create a superior pretreatment that involves Fenton chemistry. The pretreatment was optimised employing Taguchi Design of Experiments, and five parameters were taken into consideration viz. biomass loading, FeCl3 concentration, H2SO4 concentration, plasma discharge voltage and treatment time. The composition analysis of the pretreated SCW revealed substantial amounts of lignin removal, with a maximum for process conditions of 70 kV for 2 min in an acidic environment containing 1% H2SO4. FTIR, XRD and DSC were performed to characterise the samples. The pretreated SCW after enzymatic hydrolysis yielded 0.496 g of reducing sugar/g of SCW. The hydrolysate was subjected to fermentation by S. cerevisiae and led to the production of 18.642 g/l of ethanol with a fermentation efficiency of 74%, which was a two fold increase in yield compared to the control.
KW - Bioethanol production
KW - Biomass pretreatment
KW - Cold air pressure plasma
KW - Fenton reaction
KW - Lignocellulose
KW - Spent coffee waste
UR - http://www.scopus.com/inward/record.url?scp=85021629058&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2017.06.123
DO - 10.1016/j.biortech.2017.06.123
M3 - Article
C2 - 28683385
AN - SCOPUS:85021629058
SN - 0960-8524
VL - 243
SP - 327
EP - 334
JO - Bioresource Technology
JF - Bioresource Technology
ER -