A new hydrothermal system for enhancing acetic acid production by two-step reaction of organic waste

Fangming Jin, Z. Z. Zhou, H. J. Enomoto, H. N. Kishida, T. H. Moriya

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

Abstract

A reaction system for enhancing acetic acid production by a two-step process in a subcritical water condition was developed. The two-step process consisted of both a hydrothermal reaction without supply of oxygen (the first step) and a wet oxidation reaction (the second step). The first step would accelerate the formation of 5-hydroxymethyl-2-furaldehyde (HMF), 2-furaldehyde (2-FA), and lactic acid (LA), because they could produce a large amount of acetic acid by their oxidation, and the second step will further convert HMF 2-FA and LA produced in the first step to acetic acid by wet oxidation with oxygen newly supplied. Results obtained by a batch reactor had shown the acetic acid yield obtained in the two-step process was approximately twice that obtained by the usual WO procedure. Based on the results with the batch reactor, a continuous flow reaction system with the maximum treatment capacity of 50 kg/day of dry biomass was constructed. Results obtained in the continuous-flow reaction system were almost the same as those obtained in the batch study. That is, the acetic acid yield was over 20% for rice hulls, which occurred at 300°C, residence time of 2 min in the first step, and 300°C, 75% of oxygen supply and residence time of 1 min in the second step. This is an abstract of a paper presented at the 7th World Congress of Chemical Engineering (Glasgow, Scotland 7/10-14/2005).

Original languageEnglish
Title of host publication7th World Congress of Chemical Engineering, GLASGOW2005, incorporating the 5th European Congress of Chemical Engineering - Congress Manuscripts
Pages412-413
Number of pages2
Publication statusPublished - 2005 Dec 1
Event7th World Congress of Chemical Engineering, GLASGOW2005, incorporating the 5th European Congress of Chemical Engineering - Glasgow, Scotland, United Kingdom
Duration: 2005 Jul 102005 Jul 14

Publication series

Name7th World Congress of Chemical Engineering, GLASGOW2005, incorporating the 5th European Congress of Chemical Engineering

Other

Other7th World Congress of Chemical Engineering, GLASGOW2005, incorporating the 5th European Congress of Chemical Engineering
Country/TerritoryUnited Kingdom
CityGlasgow, Scotland
Period05/7/1005/7/14

ASJC Scopus subject areas

  • Energy(all)

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