Fe3O4-CuO-activated carbon composite as an efficient adsorbent for bromophenol blue dye removal from aqueous solutions

被引:52
作者
Alorabi, Ali Q. [1 ]
Hassan, M. Shamshi [1 ]
Azizi, Mohamed [2 ,3 ]
机构
[1] Albaha Univ, Fac Sci, Chem Dept, POB 1988, Albaha, Saudi Arabia
[2] Albaha Univ, Fac Sci & Arts Qilwah, Albaha 65941, Saudi Arabia
[3] Lab Nat Water Treatment Water Res & Technol Ctr W, BP 273, Soliman 8020, Tunisia
关键词
Fe3O4-CuO activated carbon composite; Bromophenol blue; Adsorption; Thermodynamics; Kinetics; RESPONSE-SURFACE METHODOLOGY; ACTIVATED CARBON; METHYLENE-BLUE; BRILLIANT BLUE; ADSORPTION; OPTIMIZATION; PERFORMANCE; KINETICS; SORPTION; CADMIUM;
D O I
10.1016/j.arabjc.2020.09.039
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Dye wastewater from industries is posing tremendous health hazards. The lethal dyes can be eliminated using nanomaterials and scientific approach like adsorption which is facile, cheap, safe as well as ecofriendly. Fe3O4-CuO-AC composite was prepared by a hydrothermal method and used for the removal of dyes in wastewater. The composite material was characterized by various techniques such as XRD, SEM, EDS, TEM and FT-IR. The Fe3O4-CuO-AC composite was used to treat five types of dyes in water. Fe3O4-CuO-AC composite showed the highest adsorption capability for bromophenol blue (BPB) dye. The effects of initial concentration, pH, the amount of adsorbent and temperature were also studied. The optimum conditions were found to be 20 ppm dye concentration, pH 9, an adsorbent dose of 0.06 gL(-1) at 65 degrees C. A removal efficiency of 97% was obtained for BPB dye during 120 min of adsorption. Kinetic studies indicated that a pseudo-second order is the most suitable model for the adsorption process. The Fe3O4-CuO-AC composite showed better adsorption capacity as compare to Fe3O4-AC except for the Methyl green dye. The maximum adsorption capacity was found to be 88.60 mg/g for BPB. Additionally, the thermodynamic parameters (Delta S degrees, Delta H degrees and Delta G degrees) showed that the process was spontaneous and exothermic. All the above results revealed that the Fe3O4-CuO-AC compositecan be an effective adsorbent for removing dyes from wastewater. (C) 2020 The Author(s). Published by Elsevier B.V. on behalf of King Saud University.
引用
收藏
页码:8080 / 8091
页数:12
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