u(Ⅰ), Zn(Ⅱ), Fe(Ⅱ), Sn(Ⅱ), Pb(Ⅱ) complexes of 1,5 bis(3 nitroacetophenone) thiocarbohydrazone were synthesized by the electrochemical oxidation of anodic metal in non aqueous solvents. The complexes were characte...u(Ⅰ), Zn(Ⅱ), Fe(Ⅱ), Sn(Ⅱ), Pb(Ⅱ) complexes of 1,5 bis(3 nitroacetophenone) thiocarbohydrazone were synthesized by the electrochemical oxidation of anodic metal in non aqueous solvents. The complexes were characterized by elemental analysis, IR UV, magnetic measurement, and molar conductivity etc.展开更多
A treatment unit packed by granular adsorbent of Fe-Mn binary oxide incorporated into diatomite （FMBO（1：1）-diatomite） was studied to remove arsenic from anaerobic groundwater without any pre-treatment or post-tre...A treatment unit packed by granular adsorbent of Fe-Mn binary oxide incorporated into diatomite （FMBO（1：1）-diatomite） was studied to remove arsenic from anaerobic groundwater without any pre-treatment or post-treatment. The raw anaerobic groundwater containing 35-45 μg/L of arsenic was collected from suburb of Beijing. Arsenic（Ⅲ） constituted roughly 60%-80% of the total arsenic content. Approximately 7,000 bed volumes （ratio of effluent volume to adsorbent volume） treated water with arsenic concentration below 10 μg/L were produced in the operation period of four months. The regeneration of FMBO（1：1）-diatomite had been operated for 15 times. In the first stage, the regeneration process significantly improved the adsorption capacity of FMBO（1：1 ）-diatomite. With increased loading amount of Fe-Mn binary oxide, the adsorption capacity for arsenic decreased 20%-40%. Iron and manganese in anaerobic groundwater were oxidized and adsorptive filtrated by FMBO（1 ： 1）-diatomite efficiently. The final concentrations of iron and manganese in effluents were nearly zero. The continued safe performance of the treatment units proved that adsorbent FMBO（1：1）- diatomite had high oxidation ability and exhibited strong adsorptive filtration.展开更多
文摘u(Ⅰ), Zn(Ⅱ), Fe(Ⅱ), Sn(Ⅱ), Pb(Ⅱ) complexes of 1,5 bis(3 nitroacetophenone) thiocarbohydrazone were synthesized by the electrochemical oxidation of anodic metal in non aqueous solvents. The complexes were characterized by elemental analysis, IR UV, magnetic measurement, and molar conductivity etc.
基金supported by the National Natural Science Foundation of China (No.50608067)the Foundation for Creative Research Groups of China (No.50621804)
文摘A treatment unit packed by granular adsorbent of Fe-Mn binary oxide incorporated into diatomite （FMBO（1：1）-diatomite） was studied to remove arsenic from anaerobic groundwater without any pre-treatment or post-treatment. The raw anaerobic groundwater containing 35-45 μg/L of arsenic was collected from suburb of Beijing. Arsenic（Ⅲ） constituted roughly 60%-80% of the total arsenic content. Approximately 7,000 bed volumes （ratio of effluent volume to adsorbent volume） treated water with arsenic concentration below 10 μg/L were produced in the operation period of four months. The regeneration of FMBO（1：1）-diatomite had been operated for 15 times. In the first stage, the regeneration process significantly improved the adsorption capacity of FMBO（1：1 ）-diatomite. With increased loading amount of Fe-Mn binary oxide, the adsorption capacity for arsenic decreased 20%-40%. Iron and manganese in anaerobic groundwater were oxidized and adsorptive filtrated by FMBO（1 ： 1）-diatomite efficiently. The final concentrations of iron and manganese in effluents were nearly zero. The continued safe performance of the treatment units proved that adsorbent FMBO（1：1）- diatomite had high oxidation ability and exhibited strong adsorptive filtration.
