The effect of food wastewater as chemical catalyst in microwave assisted hydrolysis and biochemical methane potential of cattle manure
Microwave (MW) irradiation is a promising method for the hydrolysis of cattle manure because it has lower activation energy and accelerates reaction rate for hydrolysis of organic waste than conventional heating.Nevertheless,it is also needed to enhance MW-assisted hydrolysis yield of organic waste because MW consumes electric energy.Thus,a series of experiments were performed to determine the solid content of cattle manure,the output power and target temperature of MW irradiation under the different MW irradiation times for each target temperature.And food wastewater (FWW),H2SO4 and NaCl was applied as chemical catalyst in the MW-assisted hydrolysis of cattle manure to enhance dielectric effect of MW irradiation.The highest VSS hydrolysis of cattle manure was 0.064 SCODincreased/VSinitial at solid content of 12%,MW output power of 800W and target temperature of 60℃.The lowest energy consumption for gram SCODincrease was 14.2 kJ/g SCODincrease and this result was obtained at target temperature of 40℃,solid content of 12%,MW output power of 800W.The addition of FWW in MW-assisted hydrolysis (MW-FWW) enhanced SCODinerease/VSinitial with 14% and 19% than MW-H2SO4 and MW-NaCl,respectively.Methane yield of MW-FWW was also 1.04~1.21 times higher than other conditions.Therefore,FWW containing high sodium chloride could be more promising for the enhancement of cattle manure hydrolysis.
Cattle manure microwave hydrolysis food wastewater biochemical methane potential
Kyeong Hwan Kang Hyang-Gi Kim I.M.Byun
Institute for Environmental Technology and Industry, Pusan National University, 63beon-gil , Geumjeo Department of Environmental Engineering, Pusan National University, 63beon-gil, Geumjeong-gu, Busan
国际会议
The 15th IWA World Conference on Anaerobic Digestion( 第15届IWA世界厌氧大会)
北京
英文
340-343
2017-10-17（万方平台首次上网日期，不代表论文的发表时间）