陳紅亮,龍 黔,舒建成,劉仁龍
(1.安順學(xué)院 化學(xué)化工學(xué)院,貴州 安順 561000;2.重慶大學(xué) 化學(xué)化工學(xué)院,重慶 400044)
陳紅亮1,龍 黔1,舒建成2,劉仁龍2
(1.安順學(xué)院 化學(xué)化工學(xué)院,貴州 安順 561000;2.重慶大學(xué) 化學(xué)化工學(xué)院,重慶 400044)
1.1 試樣與試劑
試驗(yàn)所用氯化鈉(NaCl)、碘化汞(HgI2)、碘化鉀(KI)、氫氧化鈉(NaOH)、酒石酸鉀鈉(KNaC4H6O6·4H2O)均為分析純?cè)噭?,氯化銨(NH4Cl)為優(yōu)級(jí)純?cè)噭?/p>
1.2 試驗(yàn)方法
(1)
2.1 不同種類電極的影響
—●—鋼板陰極,DSA陽極;—▲—石墨陰極,DSA陽極;—★—銅板陰極,DSA陽極;—◆—石墨陰極,石墨陽極。
圖1 電極材料對(duì)去除率的影響(a)和鋼、銅陰極板的溶解(b)
2.2 初始氯離子質(zhì)量濃度的影響
—■—[Cl-]=0;—●—[Cl-]=145 mg/L;—▲—[Cl-]=434 mg/L;—▼—[Cl-]=723 mg/L。
2.3 溶液初始pH的影響
—■—pH=7;—●—pH=9; —▲—pH=10;—▼—pH=11。
(2)
(3)
(4)
(5)
2.4 電流密度的影響
電流密度:—■—4.4 mA/cm2;—●—8.7 mA/cm2;—▲—26 mA/cm2;—▼—43 mA/cm2。
質(zhì)量濃度:—■—59 mg/L;—●—120 mg/L;—▲—179 mg/L;—▼—238 mg/L。
2.6 金屬陽離子的影響
圖6 不同金屬陽離子對(duì)去除率的影響
(6)
2.7 氨氮去除的動(dòng)力學(xué)分析
ln(ρ0/ρt) =Kt。
(7)
—■—59 mg/L:R2=0.993 2,K=0.032 8;—●—120 mg/L:R2=0.968 7,K=0.011 7;—▲—179 mg/L:R2=0.917 0,K=0.001 6;—▼—238 mg/L:R2=0.946 6,K=0.000 8。
[1] CHEN H L,LIU R L,SHU J C,et al.Simultaneous stripping recovery of ammonia-nitrogen and precipitation of manganese from electrolytic manganese residue by air under calcium oxide assist[J].Journal of Environmental Science & Health Part A Toxic/hazardous Substances & Environmental Engineering,2015,50(12):1282-1290
[2] ZHANG Y,WEI K,HAN W,et al.Improved electrochemical oxidation of tricyclazole from aqueous solution by enhancing mass transfer in a tubular porous electrode electrocatalytic reactor[J].Electrochimica Acta,2016,189:1-8.
[3] 董欣楊,王智鵬,古創(chuàng),等.短程硝化-反硝化中鐵炭填料對(duì)污水中氮、磷去除的研究[J].濕法冶金,2015,34(6):516-518.
[5] DE MOURA D C,QUIROZ M A,DA SILVA D R,et al.Electrochemical degradation of Acid Blue 113 dye using TiO2-nanotubes decorated with PbO2as anode[J].Environmental Nanotechnology,Monitoring & Management,2015,5:13-20.
[7] PéREZ G,SAIZ J,IBANEZ R,et al.Assessment of the formation of inorganic oxidation by-products during the electrocatalytic treatment of ammonium from landfill leachates[J].Water Research,2012,46(8):2579-2590.
[8] LI M,F(xiàn)ENG C,ZHANG Z,et al.Application of an electrochemical-ion exchange reactor for ammonia removal[J].Electrochimica Acta,2009,55(1):159-164.
[9] KIM K W,KIM Y J,KIM I T,et al.Electrochemical conversion characteristics of ammonia to nitrogen[J].Water Research,2006,40(7):1431-1441.
[11] 國家環(huán)境保護(hù)總局.水和廢水監(jiān)測(cè)分析方法[M].4 版.北京:中國環(huán)境科學(xué)出版社,2002:279-281.
[12] LI M,F(xiàn)ENG C,ZHANG Z,et al.Optimization of electrochemical ammonia removal using Box Behnken design[J].Journal of Electroanalytical Chemistry,2011,657(1):66-73.
[13] CZARNETZKI L R,JANSSEN L J J.Formation of hypochlorite,chlorate and oxygen during NaCl electrolysis from alkaline-solutions at an RuO2/TiO2anode[J].Journal of Applied Electrochemistry,1992,22(4):315-324.
[14] SHU J,LIU R,LIU Z,et al.Manganese recovery and ammonia nitrogen removal from simulation wastewater by pulse electrolysis[J].Separation and Purification Technology,2016,168:107-113.
[15] HU W W,GONG B,F(xiàn)ENG C P.Electrochemical oxidation of ammonia-containing wastewater using Ti/RuO2-Pt electrode[J].Water Science and Engineering,2009,2(4):103-109.
[16] CHEN J,SHI H,LU J.Electrochemical treatment of ammonia in wastewater by RuO2-IrO2-TiO2/Ti electrodes[J].Journal of Applied Electrochemistry,2007,37(10):1137-1144.
Removal of Ammonia-nitrogen From Leachate of Electrolytic Manganese Residue by Electrooxidation Technology
CHEN Hongliang1,LONG Qian1,SHU Jiancheng2,LIU Renlong2
(1.CollegeofChemistryandChemicalEngineering,AnshunUniversity,Anshun561000,China; 2.CollegeofChemistryandChemicalEngineering,ChongqingUniversity,Chongqing400044,China)
2016-10-19
貴州省教育廳科技拔尖人才支持項(xiàng)目(黔教合KY字[2016]094);安順學(xué)院博士基金資助項(xiàng)目(asubsjj201604)。
陳紅亮(1982-),男,河南輝縣人,博士,副教授,主要研究方向?yàn)橘Y源化工和污染控制。
X753
A
1009-2617(2017)03-0242-05
10.13355/j.cnki.sfyj.2017.03.018