He Z, Liu W, Tang C, Liang B, Guo Z, Wang L, Ren Y X, Wang A J (2019a). Frontiers of Environmental Science & Engineering, 12(4): 13 Enhanced methane recovery and exoelectrogen-methanogen evolution from low-strength wastewater in an up-flow biofilm reactor with conductive granular graphite fillers. Guo Z, Gao L, Wang L, Liu W, Wang A (2018). Energy Conversion and Management, 195: 989–1003 Three-dimensional two-phase simulation of a unitized regenerative fuel cell during mode switching from electrolytic cell to fuel cell. Guo H, Guo Q, Ye F, Ma C F, Zhu X, Liao Q (2019). A review on dark fermentative biohydrogen production from organic biomass: Process parameters and use of by-products. Ghimire A, Frunzo L, Pirozzi F, Trably E, Escudie R, Lens P N L, Esposito G (2015). Journal of Environmental Sciences (China), 21(5): 589–594 Kinetic analysis of waste activated sludge hydrolysis and short-chain fatty acids production at pH 10. Frontiers of Environmental Science & Engineering, 13(1): 3įeng L, Yan Y, Chen Y (2009). Upgrading VFAs bioproduction from waste activated sludge via co-fermentation with soy sauce residue. Environmental Science & Technology, 38(11): 3195–3202ĭuan Y, Zhou A, Wen K, Liu Z, Liu W, Wang A, Yue X (2019). Enhanced biohydrogen production from sewage sludge with alkaline pretreatment. Hydrogen energy, economy and storage: review and recommendation. And the characteristics and cascade bioconversion of complex substrates were the main factor that determined the energy efficiency and hydrogen conversion rate of MECs.Ībe J O, Popoola A P I, Ajenifuja E, Popoola O M (2019). These results revealed that pretreated WAS was highly efficient to stimulate the accumulation of SCFAs. The maximum utilization ratio of acetic acid, propionic acid and n-butyric acid was 93.69%, 90.72% and 91.85%, respectively. The accumulated short chain fatty acid (SCFAs) after pretreatments were the main substrates for MEC hydrogen production. Separating SFL from sludge by centrifugation eliminated the negative effects of particulate matters, was more conducive for hydrogen production than filtration. Highest hydrogen yield of 36.87±4.36 mgH 2/gVSS (0.026 m 3/kg COD) was achieved in TA pretreated SFL separated by centrifugation, which was 5.12, 2.35 and 43.25 times higher than that of individual alkaline, thermal pretreatment and raw sludge, respectively. The aim of this study was to investigate the biohydrogen production from thermal (T), alkaline (A) or thermal-alkaline (TA) pretreated sludge fermentation liquid (SFL) in a microbial electrolysis cells (MECs) without buffer addition.
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