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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Co-digestion of coffee residues and sugarcane vinasse for biohythane generation

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Author(s):
Maciel Pinto, Maria Paula [1] ; Mudhoo, Ackmez [2] ; Neves, Thiago de Alencar [3] ; Berni, Mauro Donizeti [4] ; Forster-Carneiro, Tania [1]
Total Authors: 5
Affiliation:
[1] Univ Estadual Campinas, UNICAMP, Fac Food Engn, Rua Monteiro Lobato 80, BR-13083862 Campinas - Brazil
[2] Univ Mauritius, Dept Chem & Environm Engn, Fac Engn, Reduit 80837 - Mauritius
[3] Univ Estadual Campinas, UNICAMP, Fac Civil Engn Architecture & Town Planning, Rua Saturnino de Brito 224, BR-13083889 Campinas, SP - Brazil
[4] Univ Estadual Campinas, UNICAMP, Interdisciplinary Ctr Energy Planning NIPE, Rua Cora Coralina, BR-13083970 Campinas, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING; v. 6, n. 1, p. 146-155, FEB 2018.
Web of Science Citations: 8
Abstract

Three abundant coffee residues (green coffee powder, parchment and defatted cake) and sugarcane vinasse were co-digested under thermophilic anaerobic conditions. A pilot plant was set-up and operated under optimized conditions using mesophilic sludge seed to produce biohydrogen. The initial conditions were acidogenic regimes (pH 5.0-6.5) followed by methanogenic conditions (pH 6.5-8.0). Results indicated the concomitant generation of biohydrogen and biomethane (termed biohythane) from the coffee residues. The green coffee powder bioreactor produced a hydrogen-rich biohythane for the first 15 days with a maximum yield on day four (31.45% hydrogen). Results also suggested that start-up of the biosystem reached the methanogenic stage in only 20-25 days and produced methane yields as high as 0.14mlCH(4)/gVS(added). For the co-digestion of defatted cake and vinasse, the only gas of interest produced was biohydrogen 32% vol./vol. between the 9th and 32nd day. Anaerobic co-digestion of parchment and vinasse produced biohythane at an average yield of 0.21mlCH(4)/gVS(added). (AU)

FAPESP's process: 11/19817-1 - Biorefinery in agricultural and food industry: recycling waste for production of new chemicals componds and biohydrogen
Grantee:Tânia Forster Carneiro
Support type: Program for Research on Bioenergy (BIOEN) - Young Investigators Grants