Influence of Fe_(2)O_(3) on Release Mechanism of NH_(3) and Other Nitrogen-Containing Compounds from Pyrolysis of Three Typical Amino Acids in Urban Sludge  

作　　者：XU Lianlian YANG Zaifu 徐莲莲;杨再福(College of Energy and Environment,Anhui University of Technology,Ma anshan 243002,China;College of Environmental Science and Engineering,Donghua University,Shanghai 200051,China)

机构地区：[1]College of Energy and Environment,Anhui University of Technology,Ma anshan 243002,China [2]College of Environmental Science and Engineering,Donghua University,Shanghai 200051,China

出　　处：《Journal of Donghua University(English Edition)》2021年第4期294-303,共10页东华大学学报（英文版）

摘　　要：To elucidate the effects of Fe_(2)O_(3) on nitrogen transformation during sludge pyrolysis,thermogravimetry coupled with mass spectrometry(TG-MS)was used to investigate the influences of Fe_(2)O_(3) on the pyrolysis characteristics and the release of important gaseous NO_(x) precursors such as HCN and NH_(3) during pyrolysis of three typical amino acids in urban sludge.The results show that after Fe_(2)O_(3) addition,the total weight loss rate of the three amino acids and the initial decomposition temperature of proline are reduced.The release amounts of NH_(3),HCN,CH_(3)CN,and HNCO from these three representative amino acids—glumatic,arginine,and proline,decrease in the order of arginine,glutamic,proline.The generation of Fe-N complexes,reduces the generation of NH_(3),HCN,CH_(3)CN,and HNCO while the catalysis effects of Fe_(2)O_(3) on the formation of H and H2 play a promoting role in the generation of NH_(3),HCN,CH_(3)CN,and HNCO.The results would provide an experimental and theoretical basis for subsequent research on the NOx precursor formation mechanisms during pyrolysis or combustion of Fe-containing sludge or sludge with additives containing Fe.

关 键 词：SLUDGE thermogravimetry coupled with mass spectrometry(TG-MS) Fe_(2)O_(3) amino acid nitrogen-containing compound 

分 类 号：TK6[动力工程及工程热物理—生物能]