Abstract：
:An anaerobic sequencing batch biofilm reactor (AnSBBR) with recirculation of the liquid phase (at 30 °C with 3.5 L of working volume and treating 1.5 L per cycle) treating pure glycerin-based wastewater was applied to biohydrogen production. The applied volumetric organic load (AVOL) ranged from 7.7 to 17.1 kgCOD m(-3) d(-1), combining different influent concentrations (3000, 4000 and 5000 mgCOD L(-1)) and cycle lengths (4 and 3 h). The feed strategy used was to maintain the feeding time equal to half of the cycle time. The increase in the influent concentration and the decrease in cycle length improved the molar yield and molar productivity of hydrogen. The highest productivity (100.8 molH2 m(-3) d(-1)) and highest yield of hydrogen per load removed (20.0 molH2 kgCOD(-1)) were reached when the reactor operated with an AVOL of 17.1 kgCOD m(-3) d(-1), with 68% of H2 and only 3% of CH4 in its biogas. It was also found that pretreatment of the sludge/inoculum does not influence the productivity/yield of the process and the use of crude industrial glycerin-based wastewater in relation to the pure glycerol-based wastewater substantially decreased the production and composition of the hydrogen produced.
journal_name
J Environ Managejournal_title
Journal of environmental managementauthors
Lovato G,Moncayo Bravo IS,Ratusznei SM,Rodrigues JA,Zaiat Mdoi
10.1016/j.jenvman.2015.02.014subject
Has Abstractpub_date
2015-05-01 00:00:00pages
128-37eissn
0301-4797issn
1095-8630pii
S0301-4797(15)00082-1journal_volume
154pub_type
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