电氧化法去除电解锰渣滤液中试验研究

2017-06-19 19:27陈红亮舒建成刘仁龙
湿法冶金 2017年3期
关键词:化工学院安顺阴极

陈红亮,龙 黔,舒建成,刘仁龙

(1.安顺学院 化学化工学院,贵州 安顺 561000;2.重庆大学 化学化工学院,重庆 400044)

陈红亮1,龙 黔1,舒建成2,刘仁龙2

(1.安顺学院 化学化工学院,贵州 安顺 561000;2.重庆大学 化学化工学院,重庆 400044)

1 试验部分

1.1 试样与试剂

试验所用氯化钠(NaCl)、碘化汞(HgI2)、碘化钾(KI)、氢氧化钠(NaOH)、酒石酸钾钠(KNaC4H6O6·4H2O)均为分析纯试剂,氯化铵(NH4Cl)为优级纯试剂,

1.2 试验方法

(1)

2 试验结果与讨论

2.1 不同种类电极的影响

—●—钢板阴极,DSA阳极;—▲—石墨阴极,DSA阳极;—★—铜板阴极,DSA阳极;—◆—石墨阴极,石墨阳极。

图1 电极材料对去除率的影响(a)和钢、铜阴极板的溶解(b)

2.2 初始氯离子质量浓度的影响

—■—[Cl-]=0;—●—[Cl-]=145 mg/L;—▲—[Cl-]=434 mg/L;—▼—[Cl-]=723 mg/L。

2.3 溶液初始pH的影响

—■—pH=7;—●—pH=9; —▲—pH=10;—▼—pH=11。

(2)

(3)

(4)

(5)

2.4 电流密度的影响

电流密度:—■—4.4 mA/cm2;—●—8.7 mA/cm2;—▲—26 mA/cm2;—▼—43 mA/cm2。

质量浓度:—■—59 mg/L;—●—120 mg/L;—▲—179 mg/L;—▼—238 mg/L。

2.6 金属阳离子的影响

图6 不同金属阳离子对去除率的影响

(6)

2.7 氨氮去除的动力学分析

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。

3 结论

[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] 董欣杨,王智鹏,古创,等.短程硝化-反硝化中铁炭填料对污水中氮、磷去除的研究[J].湿法冶金,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,FENG 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] 国家环境保护总局.水和废水监测分析方法[M].4 版.北京:中国环境科学出版社,2002:279-281.

[12] LI M,FENG 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,FENG 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

贵州省教育厅科技拔尖人才支持项目(黔教合KY字[2016]094);安顺学院博士基金资助项目(asubsjj201604)。

陈红亮(1982-),男,河南辉县人,博士,副教授,主要研究方向为资源化工和污染控制。

X753

A

1009-2617(2017)03-0242-05

10.13355/j.cnki.sfyj.2017.03.018

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