Effect of transition metal catalyst on lignin oxidation during alkaline hydrogen peroxide pretreatment

Zhenglun Li, David Hodge

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Biomass lignocellulose can be used as feedstock for bioethanol production, and a pretreatment is necessary for achieving high ethanol yield and economical feasibility. As a method to increase enzyme digestibility of biomass by selective delignification, alkaline hydrogen peroxide (AHP) pretreatment has been proposed and studied. The lignin recalcitrance in lignocellulose biomass can be removed by H 2O 2 oxidation and the enzymatic hydrolysis efficiency of the polysaccharides can be greatly improved. However, a big issue with AHP pretreatment is the high cost of hydrogen peroxide during the pretreatment, and the selectivity of the oxidant need to be improved, i.e. to achieve highest pretreatment efficiency with low level of H 2O 2 loading. In 1890s, Fenton discovered that iron ion can catalyze the oxidation of organic substrate by hydrogen peroxide. Since then, research has been done on the application of transition metal catalysts in catalyzing the phenol contaminant in wastewater and pulp bleaching. It is desired that catalyst can enhance selective electron transfer from lignin substrate to the oxidant and improve the selectivity of delignification reactions to unproductive side reactions.

LanguageEnglish (US)
Title of host publication11AIChE - 2011 AIChE Annual Meeting, Conference Proceedings
StatePublished - 2011
Event2011 AIChE Annual Meeting, 11AIChE - Minneapolis, MN, United States
Duration: Oct 16 2011Oct 21 2011

Other

Other2011 AIChE Annual Meeting, 11AIChE
CountryUnited States
CityMinneapolis, MN
Period10/16/1110/21/11

Profile

Lignin
Hydrogen peroxide
Hydrogen Peroxide
Transition metals
Oxidation
Delignification
Catalysts
Biomass
Oxidants
Bioethanol
Enzymatic hydrolysis
Substrates
Polysaccharides
Bleaching
Phenol
Feedstocks
Phenols
Pulp
Wastewater
Ethanol

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Li, Z., & Hodge, D. (2011). Effect of transition metal catalyst on lignin oxidation during alkaline hydrogen peroxide pretreatment. In 11AIChE - 2011 AIChE Annual Meeting, Conference Proceedings

Effect of transition metal catalyst on lignin oxidation during alkaline hydrogen peroxide pretreatment. / Li, Zhenglun; Hodge, David.

11AIChE - 2011 AIChE Annual Meeting, Conference Proceedings. 2011.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Li, Z & Hodge, D 2011, Effect of transition metal catalyst on lignin oxidation during alkaline hydrogen peroxide pretreatment. in 11AIChE - 2011 AIChE Annual Meeting, Conference Proceedings. 2011 AIChE Annual Meeting, 11AIChE, Minneapolis, MN, United States, 10/16/11.
Li Z, Hodge D. Effect of transition metal catalyst on lignin oxidation during alkaline hydrogen peroxide pretreatment. In 11AIChE - 2011 AIChE Annual Meeting, Conference Proceedings. 2011.
Li, Zhenglun ; Hodge, David. / Effect of transition metal catalyst on lignin oxidation during alkaline hydrogen peroxide pretreatment. 11AIChE - 2011 AIChE Annual Meeting, Conference Proceedings. 2011.
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