Synthesis, Characterization and Dye Adsorption Performance of Strontium Ferrite decorated Bentonite-CoNiAl Magnetic Comp
- PDF / 1,730,452 Bytes
- 12 Pages / 595.276 x 790.866 pts Page_size
- 34 Downloads / 203 Views
RESEARCH ARTICLE-CHEMICAL ENGINEERING
Synthesis, Characterization and Dye Adsorption Performance of Strontium Ferrite decorated Bentonite-CoNiAl Magnetic Composite Khalid H. A. Elkhider1 · Ihsanullah Ihsanullah2 · Mukarram Zubair3 · Mohammad Saood Manzar3 · Nuhu Dalhat Mu’azu3 · Mamdouh A. Al-Harthi1,4 Received: 6 January 2020 / Accepted: 16 April 2020 © King Fahd University of Petroleum & Minerals 2020
Abstract In this study, a new magnetic adsorbent, strontium ferrite-bentonite-CoNiAl composite (SF-B-CoNiAl), was synthesized via co-precipitation technique and employed for the adsorptive removal of two anionic dyes, Eriochrome Black T (EBT) and Methyl Orange (MO) from water. The surface functionalities, structure and morphology of the new adsorbent (SF-B-CoNiAl) were evaluated via scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and Brunauer–Emmett–Teller (BET) surface area analysis. The batch experiments indicated that the experimental adsorption capacity of SF-B-CoNiAl was 329.61 and 219.56 mg/g for EBT and MO, respectively. Freundlich isotherm best fitted the experimental data signifying heterogeneous surface with multilayer dyes uptake. The adsorption process of anionic dyes onto SF-B-CoNiAl involves both physisorption and chemisorption. The kinetic data of MO and EBT adsorption by SF-BCoNiAl were well described by the pseudo-second-order kinetic model. The prepared adsorbent exhibited good recyclability that demonstrates their potential for application in water purification. Keywords Strontium ferrite-bentonite-CoNiAl · Magnetic composite · Layered double hydroxides · Anionic dyes · Adsorption
1 Introduction Wastewater discharged from chemical industries has remained one of the most significant sources of environmental pollution. Water pollution caused by the dyeing industry is among the substantial menace to the ecosystem, in addition to its impacts on human health [1–5]. The organic dyes (anionic
B B
Ihsanullah Ihsanullah [email protected]; [email protected] Mamdouh A. Al-Harthi [email protected]
1
Center of Research Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
2
Center for Environment and Water, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
3
Department of Environmental Engineering, College of Engineering, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31451, Saudi Arabia
4
Department of Chemical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
and cationic dyes) are frequently employed in various chemical industries such as textile, plastics, rubber, leather, food, paper and pulp, cosmetics and their release into the ecosystem [6–9]. The global production of dyes is over 0.7 million ton, while around 100 ton of dyes is discharged annually as effluent into watercourses [10–12]. Due to their carcinogenic nature, the presence of dyes in water even in low conc
Data Loading...
