Title :
Reductive degradation of 2,4-dinitrotoluene wastewater by the catalyzed Fe-Cu process
Author :
Zheng, Haiqing ; Wang, Minhui ; Zhang, Jinhua ; Jiang, Fang ; Jiang, Xin ; Li, Xianglong ; Lin, Yi
Author_Institution :
Sch. of Environ. & Biol. Eng., Nanjing Univ. of Sci. & Technol., Nanjing, China
Abstract :
The reductive degradation of 2,4-dinitrotoluene (2,4-DNT) by the catalyzed Fe-Cu process was investigated. The effects of Fe/Cu mass ratio, pH and initial 2,4-DNT concentration on the removal efficiency were studied. The results indicated that the catalyzed Fe-Cu process could improve the reduction of 2,4-DNT compared with conventional Fe process. The removal rate of 2,4-DNT increased with decreasing pH value. The highest removal rate was observed when pH was kept at around 2. In addition, the reduction of 2,4-DNT by the catalyzed Fe-Cu process followed pseudo-first-order kinetics. According to UV spectral and HPLC analyses, 2,4-diaminotoluene(2,4-DAT) was the final reaction product of 2,4-DNT reduced by the catalyzed Fe-Cu process and possible reductive pathway of 2,4-DNT was proposed.
Keywords :
catalysis; reduction (chemical); wastewater treatment; 2,4-dinitrotoluene wastewater; catalyzed Fe-Cu process; pH value; pseudo-first-order kinetics; reductive degradation; removal efficiency; removal rate; Compounds; Copper; Degradation; Effluents; Iron; Kinetic theory; 2,4-dinitrotoluene; degradation; reduction mechanisms; the catalyzed Fe-Cu process;
Conference_Titel :
Remote Sensing, Environment and Transportation Engineering (RSETE), 2011 International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-9172-8
DOI :
10.1109/RSETE.2011.5964123
