The use and the performance of chemically treated artichoke leaves for textile industrial effluents treatment

Bencheikh, Imane; Azoulay, Karima; Mabrouki, Jamal; Hajjaji, Souad El; Moufti, Ahmed; Labjar, Najoua

doi:10.1016/j.cdc.2020.100597

Cited by 26 publications

(8 citation statements)

References 48 publications

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“…The average pH value measured is 8.1 the pH found is between 5.5 and 8.5 according to the standard of waste water discharges in Morocco [38][39][40][41], knowing that if the values found are lower than 5.5 or higher than 8.5, they may have a negative impact on the growth and survival of the microorganisms. The variation in pH is illustrated in Table 1.…”

Section: Results Of the Wastewater Characterizationmentioning

confidence: 86%

Studying the Effects of Organic and Hydraulic Shock Loads on the Membrane Bioreactor (MBR) By Using GPS-X Mathematical Model

Mabrouki¹

2022

Int. J. Membrane Sci. Techno.

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Membrane-based systems (MBR) used in wastewater treatment have many advantages over conventional activated sludge processes. They have proven to be very effective in removing organic and inorganic contaminants as well as biological entities from water. The objective of this work is to propose an optimal operation of the bioreactor after having detailed in the relationships between the nature of the sludge, its conditions is obtaining the performance of the membrane using a simulation software (GPS-X). The effects of organic and hydraulic shock loads on the MBR system were also studied. The GPS-X simulation program was used in this study to simulate the membrane bioreactor setup. The BOD removal system we used was 78%. In addition, the MBR system has a significant capacity due to the hydraulic shock load of the operation and the process efficiency for the MBR installation due to this shock load based on BOD removal was reduced up to 65%. The MBR system has a good ability to handle the organic shock loads of the operation with no significant loss in treatment efficiency. The treatment efficiency of the MBR system, due to organic shock loads based on BOD removal, decreased slightly to 80%, however, it is shown how their properties determine the extent of sludge fouling in the membrane. Based on these results, operational conditions favoring a reduction of fouling are proposed.

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Section: Results Of the Wastewater Characterizationmentioning

confidence: 86%

Studying the Effects of Organic and Hydraulic Shock Loads on the Membrane Bioreactor (MBR) By Using GPS-X Mathematical Model

Mabrouki¹

2022

Int. J. Membrane Sci. Techno.

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“…The evolution in adsorption efficiency was carried out either by determining the adsorption yield of piroxicam (R(%)); or by calculating the adsorbed amount (Q (mg/g)). The following equations were used to calculate the adsorption yield and the amount of adsorption [28][29][30]:…”

Section: Analysis Methodsmentioning

confidence: 99%

“…The samples were then treated for 1 hour at 70°C with sodium hypochlorite (NaClO) (3.7 % w/v) in a ratio of (0.5: 3 v/v) NaClO / H2O. The recovered sample was filtered and washed repetitively until it reached neutral pH, then it was dried in the open-air [26].…”

Section: Adsorbentmentioning

confidence: 99%

Removal of a non-steroidal anti-inflammatory drug (Piroxicam) in an aqueous medium by an agricultural by-product

et al. 2022

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The presence of pharmaceuticals in the environment has increased. These pollutants are toxic and non-biodegradable. Piroxicam (PRX) is a non-steroidal anti-inflammatory drug that ends up in wastewater via pharmaceutical industry activities and human being consumption. This work aimed to study the pharmaceutical pollutant removal from wastewater using agricultural by-products as low-cost adsorbent material. Different parameters were studied, such as time, initial adsorbate concentrations, and temperature. The study of the initial concentration-effect shows that the greatest amount of adsorbed is observed in low concentrations. The temperature has shown a negative effect in this study. The kinetics show that after 45min, the equilibrium is obtained; that means the exhaustion of all active sites. The representative model of this adsorption is the Langmuir isotherm according to the regression coefficient, which is equal to 0.99. The natural abundance of this material and the low cost of investment could offer a good alternative to other more expensive adsorbents such as activated carbon.

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“…It has unique physical and chemical properties such as large specific surface area, high porosity, dispersed pore size distribution, controllable oxygencontaining functional groups, and has the advantages of low cost, easy availability and regeneration. [11][12][13] It has been widely used in practical industrial production. 14 The surface oxygen-containing functional groups and pore structure of activated carbon can be modified by physical, chemical and electrochemical treatment.…”

Section: Introductionmentioning

confidence: 99%

Adsorption kinetics, isotherms and thermodynamics of aromatic amino acids in feather hydrolysate onto modified activated carbon

Wang,

Ding,

Zhang

et al. 2023

Env Prog and Sustain Energy

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The main objective of this study was to produce low cost activated carbons for the adsorption of aromatic amino acids (AA) from feather hydrolysate. By optimizing the static adsorption conditions (time, pH and concentration) of amino acids, the adsorption amounts of tyrosine and phenylalanine reached 15.2 and 20.1 mg/g, respectively, under optimal conditions. Furthermore, it exhibits excellent reusability as it maintains a removal efficiency of 82.0% and 82.8% for tyrosine and phenylalanine after being reused 4 times. The effects of NaOH modified activated carbon (NA‐AC) on the adsorption capacity of AA in feather hydrolysate at different temperatures (298.15, 308.15, 318.15 K) were investigated, and the static adsorption kinetics curves were plotted. The adsorption isotherm (Langmuir, Freundlich model), kinetics (pseudo‐first‐order‐mode, pseudo‐second‐order‐mode, particle diffusion model) and thermodynamics were studied. The results shown that the adsorption process of AA onto NA‐AC accorded with the pseudo‐second‐order‐mode. The adsorption rate was mainly controlled by the liquid film diffusion and the particle diffusion. The adsorption isotherm accorded with the Langmuir adsorption isothermal model. Adsorption was an endothermic process, and increasing temperature was conducive to adsorption. Gibbs energy ΔG indicated that the adsorption process was spontaneous, and enthalpy △H indicated that the adsorption process was mainly physical adsorption. The proposed adsorption mechanisms provide a theoretical basis for the optimization of AA separation and purification process in feather hydrolysate by NA‐AC, which may further improve the separation and purification efficiency of other amino acids in feather hydrolysate.

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The use and the performance of chemically treated artichoke leaves for textile industrial effluents treatment

Cited by 26 publications

References 48 publications

Studying the Effects of Organic and Hydraulic Shock Loads on the Membrane Bioreactor (MBR) By Using GPS-X Mathematical Model

Studying the Effects of Organic and Hydraulic Shock Loads on the Membrane Bioreactor (MBR) By Using GPS-X Mathematical Model

Removal of a non-steroidal anti-inflammatory drug (Piroxicam) in an aqueous medium by an agricultural by-product

Adsorption kinetics, isotherms and thermodynamics of aromatic amino acids in feather hydrolysate onto modified activated carbon

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