Synthesis of Lignin-based dithiocarbamate and Its Performance in Pb2+ Removal
Lignin-based dithiocarbamate (LBDTC) was prepared from lignin,formaldehyde,triethylene tetramine (TETA),carbon bisulfide and sodium hydroxide.The structure of LBDTC was characterized by FTIR and elementary analysis,and its removal performances towards Pb2+ were investigated.The results show that LBDTC is more effective than sodium triethylenetetramine-multidithiocarbamate (TETAMDT) prepared according to the same molar ratios of TETA,CS2,and NaOH and xanthation conditions used during LBDTC synthesis and much more effective than lignin for removing Pb2+.It was observed that LBDTC could effectively reduce 100 mg/L Pb2+ in wastewater to 0.05 mg/L,which is far lower than the discharge limit of 1.0 mg/L.It was also observed that LBDTC has a wide suitable pH range of 4.9-12.5.This can overcome the drawback of narrow pH scopes observed for traditional precipitation methods.
Lignin-based dithiocarbamate Synthesis Lead wastewater Removal rate
Lihua Liu Jing Cao Bo Li
Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education and Hunan Province, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan Province, P.R.China
国际会议
昆明
英文
1522-1527
2011-12-28（万方平台首次上网日期，不代表论文的发表时间）