Cassava Residue Coupled To Acetogenic Process

Cassava residue is left after cassava starch or alcohol plant system to take alcohol in the extract after starch factory waste, but still co ntains a lot of organic matter is a very useful raw material resourc es, this paper studies Bioreactor for syntrophic acetogenesis/Bioreact or for homoacetogenesis production process of two-phase coupling p rocess fermented cassava residue orientation producing acetic acid o f phase separation to make hydrogen production production acid bac teria and the same type of producing acetic acid bacteria separated in different phase occurred, in the fermentation process, the same ty pe of production acetic acid relative to consumption of hydrogen pr oduction acidogenic phase to produce hydrogen and carbon dioxide to the synthesis of acetic acid, reducing the inhibitory effect of hyd rogen partial pressure for the system. This study includes:(1) dry cassava residue after Bioreactor for syntrophic acetogenesis/Bioreactor for homoacetogenesis of two-phase coupling process of a naerobic fermentation, the substrate concentration must17g Dry cas sava residue Biohydrogen Production of VFA yield1.74g/L, and ace tic acid yield1.14g/L, and the proportion of acetic acid in the VFA has been to enhance the thirtieth day, the proportion of69.50%; a cetogenic phase of the same type of VFA yield0.41g/L, acetic acid yield of0.28g/L acetic acid in the VFA in the proportion of up to71.28%in the third day;(2) two-phase coupling system of the different types of raw materia Is for Biohydrogen Production/the same type of acetogenic anaerobi c fermentation, substrate concentration17g oven dry fresh cassava r esidue hydrogen production, the acid phase of VFA yield8.16g/L acetic acid yield of2.25g/L, acetic acid in the VFA in the proport ion of fresh cassava residue ninth day,39.01%; acetogenic phase of the same type of VFA yield1.13g/L, acetic acid yield of0.78g/L acetic acid in VFA proportion has been improved, the final acetic acid in the VFA proportion of69.24%;(3) with the hydrogen production capacity increase in acid phase/t he same type produced acetate phase two-phase coupling systems pr oducing hydrogen produced acid relative to the end of matter conce ntration of the two-phase coupled system of total VFA and acetic a cid production will be showing growth of the trend, but in which a single reaction phase, many factors affect the VFA or acetate prod uction can not determine the acid production of the hydrogen produ ction phase substrate concentration were17g,27g and37g oven dr y cassava residue, VFA production were8.16g/L,7.25g/L and7.23 g/L, and the conversion rate of VFA, respectively1.4288g/g, and1.1312g/g and0.8422g/g, but the acetic acid yield of2.25g/L,2.27g/L and2.40g/L, acetic acid conversion rate decreased to0.4660g/g,0.4242g/g and0.3324g/g,; the same type of acetogenic phase VFA production increased significantly with increasing Biohydrogen Prod uction substrate concentration, respectively.1.13g/L,1.31g/L and1.36g/L acetic acid production also has increased, respectively,0.78g/L0.94g/L and0.99g/L, and the proportion of acetic acid in the VFA has improved, the substrate concentration must17g dried cassava r esidue with a peak of39.01%,27g oven dry cassava residue peak of38.63%,37g oven dry cassava residue peak of41.26%.