Removal of textile dyes from aqueous solutions using low cost Moroccan clay

Bencheqroun, Zineb; Chaouki, Zineb; Hadri, Mohamed El; Nawdali, Mostafa; Draoui, Khalid; Váldes, Héctor; Zaitan, Hicham

doi:10.1088/1755-1315/161/1/012009

Cited by 4 publications

(1 citation statement)

References 22 publications

(14 reference statements)

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“…Dyes are used in many industrial sectors, such as textiles, paper, leather, food, and cosmetic industries [4].Moreover, these industries consume huge quantities of water. Once those dyes are released, they cause significant damage to human health such as the mutagenic and carcinogenic effects [5][6][7][8] and changes in the aquatic environment [9] when they are discharged into the environment without or with insufficient treatment [10][11][12]. To reduce the impact of this pollution, several techniques have been developed and tested in the treatment of effluents loaded with dyes, namely, biological process [13], coagulation/flocculation [14], photodegradation [15][16][17][18], ozonation [19,20], oxidation [21,22], and membrane separation [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Valorization of Date Pits as an Effective Biosorbent for Remazol Brilliant Blue Adsorption from Aqueous Solution

Thiam

Tanji

Assila

et al. 2020

Journal of Chemistry

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In this work, the adsorption of Remazol Brilliant Blue (RBB) over raw date pits (RDPs) as an inexpensive adsorbent has been examined. In addition, all parameters such as the adsorbent mass, solution pH, RDP particle size, RBB initial concentration, and temperature on the adsorption of RBB influencing the adsorption procedure were studied to provide fundamental information of the adsorption equilibrium. The characterization of RDP material is investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier-transform infrared spectroscopy (FTIR). Based on the calculation, the kinetic rate of the adsorption was well modeled by pseudo-second-order and Langmuir isotherm. Surface functional groups of RDP have substantially been influenced by the adsorption characteristics of RBB. The capacity of the adsorption has achieved 105 mg/g and a removal efficiency of 90.4% at 1.5 g/L RDP mass, 40 mg/L initial dye concentration, pH 2, temperature of 328 K, 40 µm particle size, and contact time of 50 min. The capacity of the adsorption could reach 198 mg/g by increasing the ionic strength of RBB solution. Desorption tests showed that RDP adsorbent has the disadvantage of losing efficiency while reusing for many cycles. However, it still abundant and inexpensive. Therefore, RDP can be used as a potential low-cost bioabsorbent for the elimination of RBB from wastewater.

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