Adsorption mechanisms of azo dyes binary mixture onto different raw palm wastes

Azoulay, Karima; Bencheikh, Imane; Mabrouki, Jamal; Samghouli, Nora; Moufti, Ahmed; Dahchour, Abdelmalek; Hajjaji, Souad El

doi:10.1080/03067319.2021.1878165

Cited by 35 publications

(6 citation statements)

References 32 publications

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“…During this study, we found a reduction in the concentration of BOD5 ions at the exit of the bioreactor, which could be explained by aerobic denitrification. As a result, the denitrification can take place in the activated sludge flocs, despite the high oxygen levels in the bioreactor [44]. In addition, the presence of oxygen in wastewater does not inhibit denitrification at the microenvironmental level [45].…”

Section: Results Of Hydraulic Shock Loads Normal Operationmentioning

confidence: 99%

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 Hydraulic Shock Loads Normal Operationmentioning

confidence: 99%

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%

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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“…These proteins play a key role in coagulation and flocculation (Okuda et al, 2001;Sciban et al, 2009;Baptista et al, 2017). The coagulant properties of mature Moringa seeds are attributed to cationic and water-soluble proteins, with enhanced efficacy through cation addition (Azoulay et al, 2023). Processing methods vary, employing solvents like water, NaCl, KCl, hexane, or ethanol, with extraction conditions tailored to water source and impurities (Fahey et al, 2002;Bichi, 2013).…”

Section: Moringa Seed Protein For Coagulation and Flocculationmentioning

confidence: 99%

Potential of natural coagulants for bioremediation of persistent organic pollutants in wastewater in sub-Saharan Africa: A review

Michael,

Patrick,

Betty

et al. 2024

Arch. Agric. Environ. Sci.

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Sub-Saharan Africa (SSA) is a significant user of pesticides, relying on agriculture for economic development. Pesticides and agrochemicals contribute to the presence of Persistent Organic Pollutants (POPs) in the environment. This review addresses knowledge gaps in monitoring and quantification of POPs, the application of natural coagulants for bioremediation, and associated environmental and health risks in SSA. Findings reveal inconsistencies in monitoring methods and analytes, hindering the identification of temporal trends. Legacy POPs show decreasing concentrations in soil/sediment and aquatic organisms, while some POPs increase in water, fish, fruits, and vegetables. Some river systems exceed acceptable ranges for PCBs according to USEPA standards. PFASs, particularly PFOA and PFOS, are prevalent. Natural coagulants, like Moringa oleifera and chitosan, are gaining popularity for water treatment due to their environmental sustainability and effectiveness in POP remediation. Trivalent cations in natural coagulants show promise for POP bioremediation. However, challenges remain in scaling up natural coagulant applications for commercial water treatment. This review highlights the need for standardized monitoring procedures and emphasizes the potential of natural coagulants in POP remediation efforts.

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Adsorption mechanisms of azo dyes binary mixture onto different raw palm wastes

Cited by 35 publications

References 32 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

Potential of natural coagulants for bioremediation of persistent organic pollutants in wastewater in sub-Saharan Africa: A review

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