Skip to Main Content
Evaluation energy efficiency of bioconversion knot rejects to ethanol in comparison to other thermochemically pretreated biomassAuthor(s): Zhaojiang Wang; Menghua Qin; J.Y. Zhu; Guoyu Tian; Zongquan Li
Source: BIORESOURCE TECHNOLOGY, 130 (2013), pp. 783-788.
Publication Series: Scientific Journal (JRNL)
Station: Forest Products Laboratory
View PDF (538.51 KB)
DescriptionRejects from sulfite pulp mill that otherwise would be disposed of by incineration were converted to ethanol by a combined physical–biological process that was comprised of physical refining and simultaneous saccharification and fermentation (SSF). The energy efficiency was evaluated with comparison to thermochemically pretreated biomass, such as those pretreated by dilute acid (DA) and sulfite pretreatment to overcome recalcitrance of lignocelluloses (SPORL). It was observed that the structure deconstruction of rejects by physical refining was indispensable to effective bioconversion but more energy intensive than that of thermochemically pretreated biomass. Fortunately, the energy consumption was compensated by the reduced enzyme dosage and the elevated ethanol yield. Furthermore, adjustment of disk-plates gap led to reduction in energy consumption with negligible influence on ethanol yield. In this context, energy efficiency up to 717.7% was achieved for rejects, much higher than that of SPORL sample (283.7%) and DA sample (152.8%).
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationWang, Zhaojiang; Qin, Menghua; Zhu, J.Y.; Tian, Guoyu; Li, Zongquan. 2013. Evaluation energy efficiency of bioconversion knot rejects to ethanol in comparison to other thermochemically pretreated biomass. Bioresource Technology. 130: 783-788.
KeywordsBioconversion, Energy efficiency, Ethanol, Knot rejects, Physical refining
- Comparisons of SPORL and dilute acid pretreatments for sugar and ethanol productions from aspen
- Ethanol production from poplar wood through enzymatic saccharification and fermentation by dilute acid and SPORL pretreatments
- Pretreatment of woody biomass for biofuel production: energy efficiency, technologies, and recalcitrance
XML: View XML