脂肪醇聚氧乙烯醚对钴矿物生物浸出的影响
|
摘要
通过考察脂肪醇聚氧乙烯醚(AEO_9)对细菌生长、溶浸液与矿物表面的接触角以及金属浸出率的影响,研究AEO_9对钴矿物生物浸出过程的影响。研究结果表明,添加低浓度的AEO_9对细菌的生长没有影响,但浓度过高会抑制细菌生长;添加AEO_9后,可显著减小溶液与钴矿物的接触角,溶液对矿物表面的润湿作用随AEO_9质量浓度的增加而增强;添加AEO_9能够促进钴矿物的氧化溶解,提高金属浸出率,当质量浓度为0. 40 g/L时催化效果最佳,钴浸出率可提高19. 3%,铜浸出率可提高24. 3%。
The effects of fatty alcohol-polyoxyethylene ether( AEO_9) on the bioleaching process of cobalt minerals were investigated on bacterial growth,contact angle of leaching solution with mineral surface and metal leaching rate.The results indicated that there was not negative effect on the growth of bacteria when the appropriate concentration of AEO_9 was added,and the concentration was too high to inhibit the growth of bacteria.After adding AEO_9 the contact angle of the solution and cobalt minerals was significantly decreased,the wetting effect of the solution on the mineral surface increased with the increase in mass concentration of AEO_9.The wet effect increased with the increase of AEO_9 concentration; the addition of AEO_9 could promote the oxidative dissolution between cobalt minerals and increase the metal leaching rate.When the mass concentration is 0.40 g/L,the catalytic effect is best,the cobalt leaching rate can be increased by 19.3%,the copper leaching rate can be increased by 24.3%.
The effects of fatty alcohol-polyoxyethylene ether( AEO_9) on the bioleaching process of cobalt minerals were investigated on bacterial growth,contact angle of leaching solution with mineral surface and metal leaching rate.The results indicated that there was not negative effect on the growth of bacteria when the appropriate concentration of AEO_9 was added,and the concentration was too high to inhibit the growth of bacteria.After adding AEO_9 the contact angle of the solution and cobalt minerals was significantly decreased,the wetting effect of the solution on the mineral surface increased with the increase in mass concentration of AEO_9.The wet effect increased with the increase of AEO_9 concentration; the addition of AEO_9 could promote the oxidative dissolution between cobalt minerals and increase the metal leaching rate.When the mass concentration is 0.40 g/L,the catalytic effect is best,the cobalt leaching rate can be increased by 19.3%,the copper leaching rate can be increased by 24.3%.
引文
[1] LI Y,KAWASHIMA N,LI J,et al. A review of the structure,and fundamental mechanisms and kinetics of the leaching of chalcopyrite[J]. Advances in Colloid and Interface Science,2013,197-198(9):1-32.
[2]BRIERLEY C L. How will biomining be applied in future?[J]. Transactions of Nonferrous Metals Society of China,2008,18(6):1302-1310.
[3]刘伟,杨洪英,佟琳琳,等.活性炭对钴矿物生物浸出的催化作用[J].中国有色金属学报,2014,24(4):1050-1055.LIU Wei,YANG Hongying,TONG Linlin,et al. Catalytic effect of activated carbon on bioleaching of cobalt mineral[J]. The Chinese Journal of Nonferrous Metals,2014,24(4):1050-1055.
[4] LIANG C L,XIA J L,ZHAO X J,et al. Effect of activated carbon on chalcopyrite bioleaching with extreme thermophile Acidianus manzaensis[J]. Hydrometallurgy,2010,105:179-185.
[5]GUO P,ZHANG G J,CAO J Y,et al. Catalytic effect of Ag+and Cu2+on leaching realgar(As2S2)[J].Hydrometallurgy,2011,106(1-2):99-103.
[6] PATHAK A,MORRISION L,HEALY M G. Catalytic potential of selected metal ions for bioleaching, and potential techno-economic and environmental issues:A critical review[J]. Bioresource Technology,2017,229:211-221.
[7]LIU W,YANG H Y,SONG Y,et al. Catalytic effects of activated carbon and surfactants on bioleaching of cobalt ore[J]. Hydrometallurgy,2015,152(1):69-75.
[8]刘伟,杨洪英,佟琳琳,等.表面活性剂对钴矿石生物浸出的影响[J].东北大学学报(自然科学版),2015,36(6):814-818.LIU Wei,YANG Hongying,TONG Linlin,et al. Catalytic effects of surfactants on the cobalt ore bioleaching[J].Journal of Northeastern University(natural science),2015,36(6):814-818.
[9]艾纯明,吴爱祥,王贻明,等.浸矿过程中固—液接触及影响因素[J].湿法冶金,2012,31(6):1-5.AI Chunming, WU Aixiang, WANG Yiming, et al.Contact style and influence factors solid-liquid in ore leaching[J]. Hydrometallurgy of China,2012,31(6):1-5.
[10]吴爱祥,艾纯明,王贻明,等.表面活性剂强化铜矿石浸出[J].北京科技大学学报,2013,35(6):709-713.WU Aixiang, AI Chunming, WANG Yiming, et al.Surfactant accelerating leaching of copper ores[J].Journal of University of Science and Technology Beijing,2013,35(6):709-713.
[11]AI C M,WU A X,WANG Y M,et al. Optimization and mechanism analysis of surfactant accelerating leaching test[J]. Journal of Central South University of Technology,2016,23(5):1032-1039.
[12]唐晓红,吴崇珍,李成未,等.脂肪醇聚氧乙烯醚的特性及应用[J].日用化学品科学,2012,35(2):22-24.TANG Xiaohong,WU Chongzhen,LI Chengmo,et al.Characteristics and application of fatty alcohol polyoxyethylene ether[J]. 2012,35(2):22-24.
[13] PENG A A,LIU H C,NIE Z Y,et al. Effect of surfactant Tween-80 on sulfur oxidation and expression of sulfur metabolism relevant genes of Acidithiobacillus ferrooxidans[J]. Transaction of Nonferrous Metals Society of China,2012,22(12):3147-3155.
[14]ZHANG C G,XIA J L,ZHANG R Y,et al. Comparative study on effects of Tween-80 and sodium isobutyl-xanthate on growth and sulfur-oxidizing activities of Acidithiobacillus albertensis BY-05[J]. Transaction of Nonferrous Metals Society of China,2008,18(4):1003-1007.
[15] TRIBUTSCH H. Driect versus indirect bioleaching[J].Hydrometallurgy,2001,59(2-3):177-185.
[16] GRUNDWELL F K. How do bacteria interact with minerals?[J]. Hydrometallurgy,2003,71(1):75-81.
[17] OWUSU G,DREISINGER D B,ERNEST P. Effect of surfactants on zinc and iron dissolution rates during oxidative leaching of sphalerite[J]. Hydrometallurgy,1995,38(3):315-324.
[18] BEHERA S K,SUKLA L B. Microbial extraction of nickel from chromite overburdens in the presence of surfactant[J]. Transaction of Nonferrous Metals Society of China,2012,22(11):2840-2845.
[2]BRIERLEY C L. How will biomining be applied in future?[J]. Transactions of Nonferrous Metals Society of China,2008,18(6):1302-1310.
[3]刘伟,杨洪英,佟琳琳,等.活性炭对钴矿物生物浸出的催化作用[J].中国有色金属学报,2014,24(4):1050-1055.LIU Wei,YANG Hongying,TONG Linlin,et al. Catalytic effect of activated carbon on bioleaching of cobalt mineral[J]. The Chinese Journal of Nonferrous Metals,2014,24(4):1050-1055.
[4] LIANG C L,XIA J L,ZHAO X J,et al. Effect of activated carbon on chalcopyrite bioleaching with extreme thermophile Acidianus manzaensis[J]. Hydrometallurgy,2010,105:179-185.
[5]GUO P,ZHANG G J,CAO J Y,et al. Catalytic effect of Ag+and Cu2+on leaching realgar(As2S2)[J].Hydrometallurgy,2011,106(1-2):99-103.
[6] PATHAK A,MORRISION L,HEALY M G. Catalytic potential of selected metal ions for bioleaching, and potential techno-economic and environmental issues:A critical review[J]. Bioresource Technology,2017,229:211-221.
[7]LIU W,YANG H Y,SONG Y,et al. Catalytic effects of activated carbon and surfactants on bioleaching of cobalt ore[J]. Hydrometallurgy,2015,152(1):69-75.
[8]刘伟,杨洪英,佟琳琳,等.表面活性剂对钴矿石生物浸出的影响[J].东北大学学报(自然科学版),2015,36(6):814-818.LIU Wei,YANG Hongying,TONG Linlin,et al. Catalytic effects of surfactants on the cobalt ore bioleaching[J].Journal of Northeastern University(natural science),2015,36(6):814-818.
[9]艾纯明,吴爱祥,王贻明,等.浸矿过程中固—液接触及影响因素[J].湿法冶金,2012,31(6):1-5.AI Chunming, WU Aixiang, WANG Yiming, et al.Contact style and influence factors solid-liquid in ore leaching[J]. Hydrometallurgy of China,2012,31(6):1-5.
[10]吴爱祥,艾纯明,王贻明,等.表面活性剂强化铜矿石浸出[J].北京科技大学学报,2013,35(6):709-713.WU Aixiang, AI Chunming, WANG Yiming, et al.Surfactant accelerating leaching of copper ores[J].Journal of University of Science and Technology Beijing,2013,35(6):709-713.
[11]AI C M,WU A X,WANG Y M,et al. Optimization and mechanism analysis of surfactant accelerating leaching test[J]. Journal of Central South University of Technology,2016,23(5):1032-1039.
[12]唐晓红,吴崇珍,李成未,等.脂肪醇聚氧乙烯醚的特性及应用[J].日用化学品科学,2012,35(2):22-24.TANG Xiaohong,WU Chongzhen,LI Chengmo,et al.Characteristics and application of fatty alcohol polyoxyethylene ether[J]. 2012,35(2):22-24.
[13] PENG A A,LIU H C,NIE Z Y,et al. Effect of surfactant Tween-80 on sulfur oxidation and expression of sulfur metabolism relevant genes of Acidithiobacillus ferrooxidans[J]. Transaction of Nonferrous Metals Society of China,2012,22(12):3147-3155.
[14]ZHANG C G,XIA J L,ZHANG R Y,et al. Comparative study on effects of Tween-80 and sodium isobutyl-xanthate on growth and sulfur-oxidizing activities of Acidithiobacillus albertensis BY-05[J]. Transaction of Nonferrous Metals Society of China,2008,18(4):1003-1007.
[15] TRIBUTSCH H. Driect versus indirect bioleaching[J].Hydrometallurgy,2001,59(2-3):177-185.
[16] GRUNDWELL F K. How do bacteria interact with minerals?[J]. Hydrometallurgy,2003,71(1):75-81.
[17] OWUSU G,DREISINGER D B,ERNEST P. Effect of surfactants on zinc and iron dissolution rates during oxidative leaching of sphalerite[J]. Hydrometallurgy,1995,38(3):315-324.
[18] BEHERA S K,SUKLA L B. Microbial extraction of nickel from chromite overburdens in the presence of surfactant[J]. Transaction of Nonferrous Metals Society of China,2012,22(11):2840-2845.