改性活性炭吸附处理含铬电镀废水的研究
|
摘要
分别采用硫酸和双氧水对活性炭迚行改性,测定了改性后活性炭的表面面积和含氧官能团数量,以改性后的活性炭为吸附剂,用于处理含铬电镀废水。考察了pH值、吸附时间和吸附剂用量等对Cr(VI)去除率的影响,并研究了其吸附等温线。研究表明,相比未改性活性炭,改性后的活性炭含氧官能团数量明显增加,并且改性后活性炭有利于对废水中Cr(VI)的吸附,经双氧水改性后的活性炭的吸附效果最好。
Activated carbon was respectively modified by sulfuric acid and hydrogen peroxide. The surface area of modified activated carbon and the number of oxygen-containing functional groups were determined. The modified activated carbon was used as an adsorbent to treat chromium-containing electroplating wastewater. The influence of pH value, adsorption time and adsorbent dosage on the removal rate of Cr(VI) was investigated, and the adsorption isotherm was studied. The results showed that, compared with unmodified activated carbon, the number of oxygen-containing functional groups of modified activated carbon was significantly increased, and the modified activated carbon was favorable for the adsorption of Cr(VI) in wastewater, the adsorption capability of activated carbon modified by hydrogen peroxide was higher than that of activated carbon modified by sulfuric acid.
Activated carbon was respectively modified by sulfuric acid and hydrogen peroxide. The surface area of modified activated carbon and the number of oxygen-containing functional groups were determined. The modified activated carbon was used as an adsorbent to treat chromium-containing electroplating wastewater. The influence of pH value, adsorption time and adsorbent dosage on the removal rate of Cr(VI) was investigated, and the adsorption isotherm was studied. The results showed that, compared with unmodified activated carbon, the number of oxygen-containing functional groups of modified activated carbon was significantly increased, and the modified activated carbon was favorable for the adsorption of Cr(VI) in wastewater, the adsorption capability of activated carbon modified by hydrogen peroxide was higher than that of activated carbon modified by sulfuric acid.
引文
[1]杨晓庆,方正,侯芳丽,葛天琪,张晋华.甘蔗渣活性炭处理含铬电镀废水[J].电镀与涂饰,2014,33(23):1033-1035.
[2]张乾,迟占秋,段丽丽,苗文莉.活性炭吸附处理电镀废水的研究[J].电镀与环保,2018,38(02):55-58.
[3]郭文波,李子富,程世昆,张扬,周晓琴.活性炭吸附处理电镀废水中的EDTA[J].环境工程学报,2013,7(10):4004-4008.
[4]黄国林,梁平,白芳.活性炭吸附处理含铬电镀废水的研究[J].林产化工通讯,1999(05):14-17.
[5]刘晓明,杨翠英,宋吉勇.用活性炭为吸附剂处理含Cr(Ⅵ)电镀废水探讨[J].山东科技大学学报(自然科学版),2005(02):107-109.
[6]王雨,郭永福,吴伟,白仁碧.改性活性炭铁吸附剂处理含铬电镀废水[J].工业水处理,2015,35(01):18-22.
[7]康玉莹,李海成,毛文静.改性活性炭对金属离子的吸附性能研究[J].当代化工研究,2017(4):4-5.
[8]陈家明.膜处理与活性炭吸附技术在电镀废水回用工程的应用[J].广东化工,2009,36(10):138-140.
[9]沈斌,胡洁.中和-气浮-砂滤-活性炭吸附处理电镀废水研究[J].资源节约与环保,2016(12):38-39.
[10]张条兰,方秀苇,席会平.电絮凝-活性炭纤维吸附法处理电镀废水的研究[J].电镀与精饰,2016,38(02):42-46.
[11]Valdes H,Sanchez M,Rivera J,et al.Effect of ozone treatment on surface properties of activated carbon[J].Langmuir,2002,18(6):2111-2116.
[12]Rivera-Utrilla J,Bautista-Toledo I,Ferro-Garcia M A,et al.Bioadsorption of Pb(II),Cd(II)and Cr(VI)on activated carbon from aqueous solutions[J].Carbon,2003,41(5):323-330.
[2]张乾,迟占秋,段丽丽,苗文莉.活性炭吸附处理电镀废水的研究[J].电镀与环保,2018,38(02):55-58.
[3]郭文波,李子富,程世昆,张扬,周晓琴.活性炭吸附处理电镀废水中的EDTA[J].环境工程学报,2013,7(10):4004-4008.
[4]黄国林,梁平,白芳.活性炭吸附处理含铬电镀废水的研究[J].林产化工通讯,1999(05):14-17.
[5]刘晓明,杨翠英,宋吉勇.用活性炭为吸附剂处理含Cr(Ⅵ)电镀废水探讨[J].山东科技大学学报(自然科学版),2005(02):107-109.
[6]王雨,郭永福,吴伟,白仁碧.改性活性炭铁吸附剂处理含铬电镀废水[J].工业水处理,2015,35(01):18-22.
[7]康玉莹,李海成,毛文静.改性活性炭对金属离子的吸附性能研究[J].当代化工研究,2017(4):4-5.
[8]陈家明.膜处理与活性炭吸附技术在电镀废水回用工程的应用[J].广东化工,2009,36(10):138-140.
[9]沈斌,胡洁.中和-气浮-砂滤-活性炭吸附处理电镀废水研究[J].资源节约与环保,2016(12):38-39.
[10]张条兰,方秀苇,席会平.电絮凝-活性炭纤维吸附法处理电镀废水的研究[J].电镀与精饰,2016,38(02):42-46.
[11]Valdes H,Sanchez M,Rivera J,et al.Effect of ozone treatment on surface properties of activated carbon[J].Langmuir,2002,18(6):2111-2116.
[12]Rivera-Utrilla J,Bautista-Toledo I,Ferro-Garcia M A,et al.Bioadsorption of Pb(II),Cd(II)and Cr(VI)on activated carbon from aqueous solutions[J].Carbon,2003,41(5):323-330.