Adsorption of acid and basic dyes by sludge-based activated carbon:Isotherm and kinetic studies

被引：6
作者：
李鑫 [1 ]
王广智 [1 ]
李伟光 [1 ,2 ]
王萍 [1 ]
宿程远 [1 ]
机构：
[1] School of Municipal and Environmental Engineering,Harbin Institute of Technology
[2] State Key Laboratory of Urban Water Resource and Environment(Harbin Institute of Technology)
来源：
JournalofCentralSouthUniversity | 2015年 / 22卷 / 01期
基金：
中国国家自然科学基金;
关键词：
sludge-based activated carbon; Acid Orange 51; Safranine; adsorption; isotherms; kinetics;
D O I：
暂无
中图分类号：
O647.31 [吸附理论];
学科分类号：
070304 ; 081704 ;
摘要：
A batch experiment was conducted to investigate the adsorption of an acid dye(Acid Orange 51) and a basic dye(Safranine) from aqueous solutions by the sludge-based activated carbon(SBAC). The results show that the adsorption of Acid Orange 51 decreases at high p H values, whereas the uptake of Safranine is higher in neutral and alkaline solutions than that in acidic conditions. The adsorption time needed for Safranine to reach equilibrium is shorter than that for Acid Orange 51. The uptakes of the dyes both increase with temperature increasing, indicating that the adsorption process of the dyes onto SBAC is endothermic. The equilibrium data of the dyes are both best represented by the Redlich-Peterson model. At 25 °C, the maximum adsorption capacities of SBAC for Acid Orange 51 and Safranine are 248.70 mg/g and 525.84 mg/g, respectively. The Elovich model is found to best describe the adsorption process of both dyes, indicating that the rate-limiting step involves the chemisorption. It can be concluded that SBAC is a promising material for the removal of Acid Orange 51 and Safranine from aqueous solutions.
引用
收藏
页码：103 / 113
页数：11
相关论文
共 19 条
  • [1] Characteristics of activated carbon prepared from Chinese fir sawdust by zinc chloride activation under vacuum condition[J]. 丘克强,杨素文,杨娟.Journal of Central South University of Technology. 2009(03)
  • [2] The removal of cationic dyes from aqueous solutions by adsorption onto pistachio hull waste[J] . Gholamreza Moussavi,Rasoul Khosravi.Chemical Engineering Research and Design . 2011 (10)
  • [3] Application of low-cost adsorbents for dye removal – A review[J] . V.K. Gupta,Suhas.Journal of Environmental Management . 2008 (8)
  • [4] Effect of solution pH, ionic strength, and temperature on adsorption behavior of reactive dyes on activated carbon[J] . Yahya S. Al-Degs,Musa I. El-Barghouthi,Amjad H. El-Sheikh,Gavin M. Walker.Dyes and Pigments . 2007 (1)
  • [5] Low cost removal of disperse dyes from aqueous solution using palm ash[J] . M. Hasnain Isa,Lee Siew Lang,Faridah A.H. Asaari,Hamidi A. Aziz,N. Azam Ramli,Jaya Paul A. Dhas.Dyes and Pigments . 2006 (2)
  • [6] Preparation and characterization of activated carbon derived from the thermo-chemical conversion of chicken manure[J] . S. Koutcheiko,C.M. Monreal,H. Kodama,T. McCracken,L. Kotlyar.Bioresource Technology . 2006 (13)
  • [7] Biosorption of Acid Blue 15 using fresh water macroalga Azolla filiculoides : Batch and column studies[J] . T.V.N. Padmesh,K. Vijayaraghavan,G. Sekaran,M. Velan.Dyes and Pigments . 2005 (2)
  • [8] Experimental and kinetic studies on methylene blue adsorption by coir pith carbon[J] . D. Kavitha,C. Namasivayam.Bioresource Technology . 2005 (1)
  • [9] Adsorptive removal of phenol by bagasse fly ash and activated carbon: Equilibrium, kinetics and thermodynamics[J] . Vimal C. Srivastava,Mahadeva M. Swamy,Indra D. Mall,Basheswar Prasad,Indra M. Mishra.Colloids and Surfaces A: Physicochemical and Engineering Aspects . 2005 (1)
  • [10] Characterization of surface chemistry and pore structure of H3PO4-activated poly(vinyl alcohol) coated fiberglass
    Yue, ZR
    Mangun, CL
    Economy, J
    [J]. CARBON, 2004, 42 (10) : 1973 - 1982
12