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- 저자 : Agus Jatnika Effendi (검색결과 1 건)
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송영현,Syarif Hidayat,Agus Jatnika Effendi,박주양 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.94 No.-
In this research, a novel Microbial reverse-electrodialysis electrolysis struvite-precipitation cell (MRESC)was developed for energy recovery through struvite (MgNH4PO4 6H2O) crystallization and hydrogenproduction concurrently in a single process without any electrical-grid energy consumption. This hybridsystem can effectively transfer the salinity gradient energy to electrical energy as a driving force toproduce hydrogen gas coupled with struvite recovery and organic wastewater degradation. A MRESCcontaining 10 pairs of RED cells, supplied solutions typical of high concentration (600 mM NaCl) and lowconcentration (12 mM NaCl) at 1.0 mL/min, was operated in the fed-batch mode. The rates of hydrogenproduction and struvite crystallization were determined to be 0.71 m3-H2/m3-Van/d and 7.62 g/m2/h,respectively. The gas produced was >92% H2. The Coulombic efficiency was close to or above 100% with aCOD removal of 84 6%, and an overall energy efficiency of 28%. The morphology and structure of themain component of accumulated crystal at the cathode were verified by a scanning electron microscopewith energy dispersive spectroscopy (SEM-EDS) and X-ray diffraction. These results showed that theMRESC system could be used as an effective bioelectrochemical method for energy recovery in the formof pure hydrogen gas and struvite simultaneously.
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