Experimental and numerical analysis of oily wastewater treatment using low-cost mineral adsorbent in a single and multi-fixed bed column

Gholamifard, Hoda; Rasul, M.G.; Rahideh, Hossein; Azari, Ahmad; Abbasi, Mohsen; Karami, Rahim

doi:10.1016/j.ceja.2023.100551

Cited by 7 publications

(2 citation statements)

References 57 publications

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“…Continuous adsorption using different materials is an emerging alternative method due to its cost-effectiveness, simplicity in design and operation, capability for removal at low concentrations, low sludge production, and environmental friendliness (Patel, 2019;Giri and, Mishra, 2022;Gholamifard et al, 2023;Subair et al, 2024).…”

Section: Introductionmentioning

confidence: 99%

Green clay materials applied in packed bed columns for adsorption of hexavalent chromium from aqueous solutions

Eloussaief,

Dammak,

Ghrab

et al. 2024

Preprint

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The removal of hazardous metal ions from polluted water is a crucial process aimed at enhancing water quality. In this study, we conducted a dynamic adsorption investigation utilizing natural green clay for the removal of hexavalent chromium from aqueous solutions. The material underwent characterization through various techniques, including fluorescence spectrometry (XRF), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and nitrogen-physisorption (BET). Column tests of green clay material and sand mixtures were performed to evaluate sorption in dynamic systems. Adsorption conditions were examined by varying the initial Cr6+ concentration, flow rate and column height. The maximum purification was achieved at a concentration of 50 mg/L, a flow rate of 3mL/min and a bed height of 12 cm. The mathematical models of Bohart-Adams, Thomas, and Yoon-Nelson were employed to analyze experimental data and predict breakthrough curves in continuous adsorption. Through comparison of R2 values, it was determined that the Yoon-Nelson and Thomas diffusion models effectively capture and accurately describe the experimental data. The results obtained indicate a potential expansion of fixed-bed adsorption for the heavy metals treatment in industrial-scale wastewater. Additionally, the natural green clay material exhibited remarkable reusability and showed promising characteristics for various environmental and industrial applications.

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Section: Introductionmentioning

confidence: 99%

Green clay materials applied in packed bed columns for adsorption of hexavalent chromium from aqueous solutions

Eloussaief,

Dammak,

Ghrab

et al. 2024

Preprint

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“…Ao et al [ 9 ] prepared amine-functionalized cotton to treat oily wastewater, and the de-oiling rate reached 98.5%. Gholamifard et al [ 10 ] used natural zeolite and calcined bentonite to treat oily wastewater with a maximum capacity of 3.06 mg/g and 5.37 mg/g, respectively. However, high cost and low efficiency were still the main problems during the oily wastewater treatment process [ 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Biochar Composite Microspheres and Their Ability for Removal with Oil Agents in Dyed Wastewater

Shen,

Jin,

Chen

et al. 2023

Materials

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Oil agents produced from the degreasing treatment of synthetic fibers are typical pollutants in wastewater from printing and dyeing, which may cause large-scale environmental pollution without proper treatment. Purifying oily dye wastewater (DTY) at a low cost is a key problem at present. In this study, biochar microspheres with oil removal ability were prepared and derived from waste bamboo chips using the hydrothermal method. The structure of the biochar microsphere was regulated by activation and modification processes. Biochar microspheres were characterized, and their adsorption behaviors for oily dye wastewater were explored. The results show that the adsorption efficiency of biochar microspheres for oily dye wastewater (DTY) was improved significantly after secondary pyrolysis and the lauric acid grafting reaction. The maximum COD removal quantity of biochar microspheres for DTY was 889 mg/g with a removal rate of 86.06% in 30 min. In addition, the kinetics showed that chemisorption was the main adsorption manner. Considering the low cost of raw materials, the application of biochar microspheres could decrease the cost of oily wastewater treatment and avoid environmental pollution.

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Green Clay Materials Applied in Packed Bed Columns for the Hexavalent Chromium Adsorption from Aqueous Solutions

Eloussaief,

Dammak,

Ghrab

et al. 2024

Chemistry Africa

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Experimental and numerical analysis of oily wastewater treatment using low-cost mineral adsorbent in a single and multi-fixed bed column

Cited by 7 publications

References 57 publications

Green clay materials applied in packed bed columns for adsorption of hexavalent chromium from aqueous solutions

Green clay materials applied in packed bed columns for adsorption of hexavalent chromium from aqueous solutions

Preparation of Biochar Composite Microspheres and Their Ability for Removal with Oil Agents in Dyed Wastewater

Green Clay Materials Applied in Packed Bed Columns for the Hexavalent Chromium Adsorption from Aqueous Solutions

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