title: Comparative studies on removal of Erythrosine using ZnS and AgOH nanoparticles loaded on activated carbon as adsorbents: Kinetic and isotherm studies of adsorption.
abstract: Erythrosine adsorption (Er) onto ZnS and AgOH nanoparticle-loaded activated carbon (ZnS-NP-AC and AgOH-NP-AC) was studied and results were compared. Subsequent preparation were fully analyzed by different approach such as BET to obtain knowledge about surface area, pore volume, while FT-IR analysis give comprehensive information about functional group the dependency of removal percentage to adsorbent mass, initial Er concentration and contact time were investigated and optimum conditions for pH, adsorbent dosage, Er concentration and contact time was set as be 3.2, 0.016g, 20mg/L and 16min and 3.2, 0.015g, 19mg/L and 2min for ZnS-NP-AC and AgOH-NP-AC, respectively. The equilibrium data correspond to adsorption strongly follow Langmuir model by ZnS-NP-AC and Freundlich model for AgOH-NP-AC. High adsorption capacity for of 55.86-57.80mgg(-1) and 67.11-89.69mgg(-1) for ZnS-NP-AC and AgOH-NP-AC, respectively. The result of present study confirm the applicability of small amount of these adsorbent (<0.02g) for efficient removal of Er (>95%) in short reasonable time (20min).
authors.affiliation: Chemistry Department, Yasouj University, Yasouj 75914-35, Iran. Electronic address: m_ghaedi@mail.yu.ac.ir.
authors.forename: M
authors.initials: M
authors.lastname: Ghaedi
authors.affiliation: Chemistry Department, Payame Noor University, Ardekan, Iran.
authors.forename: Z
authors.initials: Z
authors.lastname: Rozkhoosh
authors.affiliation: Chemistry Department, Yasouj University, Yasouj 75914-35, Iran.
authors.forename: A
authors.initials: A
authors.lastname: Asfaram
authors.affiliation: Chemistry Department, Yasouj University, Yasouj 75914-35, Iran.
authors.forename: B
authors.initials: B
authors.lastname: Mirtamizdoust
authors.affiliation: Chemistry Department, Payame Noor University, Ardekan, Iran.
authors.forename: Z
authors.initials: Z
authors.lastname: Mahmoudi
authors.affiliation: Chemistry Department, Yasouj University, Yasouj 75914-35, Iran.
authors.forename: A A
authors.initials: AA
authors.lastname: Bazrafshan
mesh_terms: D000327:Adsorption; D002244:Carbon / Q000737:chemistry*; D002606:Charcoal / Q000737:chemistry*; D002623:Chemistry Techniques, Analytical; D004396:Coloring Agents / Q000737:chemistry / Q000302:isolation & purification*; D004923:Erythrosine / Q000302:isolation & purification*; D007700:Kinetics; D053768:Metal Nanoparticles / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D015233:Models, Statistical; D036103:Nanotechnology / Q000379:methods*; D010087:Oxides / Q000737:chemistry*; D011237:Predictive Value of Tests; D018030:Silver Compounds / Q000737:chemistry*; D013440:Sulfides / Q000737:chemistry*; D014961:X-Ray Diffraction; D017967:Zinc Compounds / Q000737:chemistry*
chemical_list: D004396:Coloring Agents; D010087:Oxides; D018030:Silver Compounds; D013440:Sulfides; D017967:Zinc Compounds; D002606:Charcoal; D002244:Carbon; C040225:disilver oxide; C031238:zinc sulfide; D004923:Erythrosine
keywords: Activated carbon; Adsorption; Central composite design; Dyes; Response surface methodology; Zinc sulfide nanoparticles