酸浸法回收制革污泥中的铬
|
摘要
利用硫酸酸浸提取制革污泥中的金属铬,研究了固液比、酸浓度、浸出时间、温度和搅拌速度等因素对浸出效率的影响,并获得最优浸出条件。结果表明,最优浸出条件为:固液比10g/L,硫酸浓度0.5mol/L,浸出温度50℃,浸出时间1.5h。搅拌速度对硫酸浸出铬影响较小。经硫酸二次浸出铬的效率达到90.95%。因此,用硫酸酸浸的方法提取制革污泥中的铬是可行的。
Leaching studies of tannery sludge were carried out in sulfuric acid media aiming to recover the maximum leaching yield of chromium. The effect of various factors(solid-liquid ratio, the concentration of acid, leaching time, temperature and stirring rate) was studied. The results indicate that the optimum solid-liquid ratio is 10g/L, the concentration of sulfuric acid is 0.5mol/L, the leaching temperature is 50℃, and the leaching time is 1.5h. The stirring rate affected rarely on leaching yield of chromium. After two times of leaching, the leaching yield of chromium had become 90.95%. Therefore, the application of sulfuric acid leaching to recover chromium is available.
Leaching studies of tannery sludge were carried out in sulfuric acid media aiming to recover the maximum leaching yield of chromium. The effect of various factors(solid-liquid ratio, the concentration of acid, leaching time, temperature and stirring rate) was studied. The results indicate that the optimum solid-liquid ratio is 10g/L, the concentration of sulfuric acid is 0.5mol/L, the leaching temperature is 50℃, and the leaching time is 1.5h. The stirring rate affected rarely on leaching yield of chromium. After two times of leaching, the leaching yield of chromium had become 90.95%. Therefore, the application of sulfuric acid leaching to recover chromium is available.
引文
[1]A.Kabata-Pendias,H.Pendias,Biogeochemistry of Trace Elements[M],PWN,Warszawa,1993,pp.242-251,In Polish.
[2]W.Seńczuk(Ed.),Toxicology[M],third edition,PZWL,Warszawa,1999,pp.448-454,Chapter 13.4,In Polish.
[3]余陆沐,兰莉,陈慧,程慎玉,章艺.制革污泥的处理及利用[J].中国皮革,2010,39(9),1-5.
[4]丁绍兰,秦宁.皮革固体废弃物资源化处理与处置[J].西部皮革,2009,31(11),20-24.
[5]Gustavo Rossini and Andréa Moura Bernardes.Galvanic sludge metals recovery by pyrometallurgical and hydrometallurgical treatment[J].Journal of Hazardous Materials,2006,131:210-215.
[6]杨新生.氨浸过程浅析[J].有色矿冶,1993,(1):34-38.
[7]F.Vegliò,R.Quaresima,P.Fornari,S.Ubaldini,Recovery of valuable metals from electronic and galvanicindustrial wastes by leaching and electrowinning[J].Waste Management,2003,23:245-252.
[8]乔秀丽,田军,马松艳,赵东江.采用酸浸法从废旧锂离子电池中回收金属钴[J].哈尔滨理工大学学报,2011,16(2):106-109.
[9]J.E.Silva,D.Soares,A.P.Paiva,J.A.Labrincha,F.Castro,Leaching behaviour of a galvanic sludge in sulphuric acid and ammoniacal media[J].Journal of Hazardous Materials,2005,B121:195-202.
[10]S.B.Shen,R.D.Tyagi&J.F.Blais,Extraction of Cr(III)and Other Metals from Tannery Sludge by Mineral Acids[J].Environmental technology,2001,22:1007-1014.
[11]丁建东,唱鹤鸣,丁勇.电镀污泥回收重金属的新工艺[J].环境工程学报,2013,7(5):1969-1973.
[12]L.Kuboňová,.Langova,B.Nowak,F.Winter.Thermal and hydrometallurgical recovery methods of heavy metals from municipal solid waste fly ash[J].Waste Management,2013,33:2322-2327.
[13]D.Rai,B.M.Sass and D.A.Moore,Cromium(Ⅲ)hydrolysis constants and solubility of chromium(Ⅲ)hydroxide[J].Inorg.Chem.1987,26,345-349.
[2]W.Seńczuk(Ed.),Toxicology[M],third edition,PZWL,Warszawa,1999,pp.448-454,Chapter 13.4,In Polish.
[3]余陆沐,兰莉,陈慧,程慎玉,章艺.制革污泥的处理及利用[J].中国皮革,2010,39(9),1-5.
[4]丁绍兰,秦宁.皮革固体废弃物资源化处理与处置[J].西部皮革,2009,31(11),20-24.
[5]Gustavo Rossini and Andréa Moura Bernardes.Galvanic sludge metals recovery by pyrometallurgical and hydrometallurgical treatment[J].Journal of Hazardous Materials,2006,131:210-215.
[6]杨新生.氨浸过程浅析[J].有色矿冶,1993,(1):34-38.
[7]F.Vegliò,R.Quaresima,P.Fornari,S.Ubaldini,Recovery of valuable metals from electronic and galvanicindustrial wastes by leaching and electrowinning[J].Waste Management,2003,23:245-252.
[8]乔秀丽,田军,马松艳,赵东江.采用酸浸法从废旧锂离子电池中回收金属钴[J].哈尔滨理工大学学报,2011,16(2):106-109.
[9]J.E.Silva,D.Soares,A.P.Paiva,J.A.Labrincha,F.Castro,Leaching behaviour of a galvanic sludge in sulphuric acid and ammoniacal media[J].Journal of Hazardous Materials,2005,B121:195-202.
[10]S.B.Shen,R.D.Tyagi&J.F.Blais,Extraction of Cr(III)and Other Metals from Tannery Sludge by Mineral Acids[J].Environmental technology,2001,22:1007-1014.
[11]丁建东,唱鹤鸣,丁勇.电镀污泥回收重金属的新工艺[J].环境工程学报,2013,7(5):1969-1973.
[12]L.Kuboňová,.Langova,B.Nowak,F.Winter.Thermal and hydrometallurgical recovery methods of heavy metals from municipal solid waste fly ash[J].Waste Management,2013,33:2322-2327.
[13]D.Rai,B.M.Sass and D.A.Moore,Cromium(Ⅲ)hydrolysis constants and solubility of chromium(Ⅲ)hydroxide[J].Inorg.Chem.1987,26,345-349.