Effect of operating parameters on dye wastewater treatment using Prosopis cineraria and kinetic modeling

Rajamohan, N.; Rajasimman, M.

doi:10.4491/eer.2019.308

Cited by 24 publications

(11 citation statements)

References 25 publications

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“…Despite the significant contributions on the coagulation mechanism of the MO biomass coagulant, the mechanism of pollutant removal by MO biomass through the settling ability of the flocs is not well discussed. Viotti et al [20,21] re-emphasized the need for further studies on the removal of organic pollutants using the MO biomass. The inadequate details in this area create an important knowledge gap that needs to be considered.…”

Section: Introductionmentioning

confidence: 99%

Kinetic and Prediction Modeling Studies of Organic Pollutants Removal from Municipal Wastewater using Moringa oleifera Biomass as a Coagulant

Adelodun

Ogunshina

Ajibade

et al. 2020

Water

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This study investigated the potential of Moringa oleifera (MO) seed biomass as a coagulant for the removal of turbidity, biochemical oxygen demand (BOD), and chemical oxygen demand (COD) of municipal wastewater. Triplicated laboratory experiments using MO coagulant added at varying treatment dosages of 50, 100, 150, 200 mg/L, and a control (0 mg/L) treatment were performed for a settling period of 250 min at room temperature. Kinetics and prediction variables of cumulative turbidity, BOD, and COD removal were estimated using simplified first order and modified Gompertz models. Results showed that the maximum removal of turbidity, BOD, and COD were 94.44%, 68.72%, and 57.61%, respectively, using an MO dose of 150 mg/L. Various kinetic parameters, such as rate constant (r), measured (REm) versus predicted (REp) cumulative removal, and specific pollutant removal rate (µm), were also maximum when an MO dose of 150 mg/L was added, the standard error being below 5%. The developed models were successfully validated over multiple observations. This study suggests low cost and sustainable removal of turbidity, BOD, and COD of municipal wastewater using MO seed biomass as a coagulant.

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Section: Introductionmentioning

confidence: 99%

Kinetic and Prediction Modeling Studies of Organic Pollutants Removal from Municipal Wastewater using Moringa oleifera Biomass as a Coagulant

Adelodun

Ogunshina

Ajibade

et al. 2020

Water

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“…4). In this study, the suitability of the experimental data to the pseudo-first-order and pseudo-second-order kinetic model was tested and the pseudo-first-order kinetic model was found to represent the COD, UV254, and CN removal from leachate in a better way with higher R 2 values [60]. According to the reaction rate constants for COD, UV 254, and CN removal, the reaction rates decrease as the pH increases, especially at neutral and basic pH values.…”

Section: Electro-oxidation Processmentioning

confidence: 99%

Pre-coagulated landfill leachate treatment by Electro-oxidation using MMO/Ti, Pt/Ti, and graphite anodes

Güvenç

Daniser

Can‐Güven

et al. 2022

Environmental Engineering Research

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In this study, sequential coagulation and electro-oxidation (EO) processes were applied to landfill leachate, which is highly contaminated and complex wastewater. Since the pollutant content of the leachate was too high, the coagulation process (poly aluminum chloride (PAC) as a coagulant) was applied as a pre-treatment to reduce the cost of the EO process. The Box-Behnken design of response surface methodology was used. The color number (CN) removal efficiency estimated by the model under optimum operating conditions was 80.1%, while it was 77.6% in the experimental studies performed under optimum conditions to verify the model conformity. Multi-metal oxide doped Ti (MMO/Ti), Pt doped Ti (Pt/Ti), and graphite were used as anode and stainless steel was used as cathode in the EO process. In the EO process in which Pt/Ti anode was used, chemical oxygen demand (COD), UV 254 , and CN removal efficiencies were 52.8, 68.1, and 85.6%, respectively under the conditions of applied current 1.25 A and the pH 5. The CN value decreased to 4.2 after the coagulation process and it was 0.6 at the effluent of the EO process.

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“…Ppy polymer was synthesized in aqueous DEG using APS as an oxidant using chemical oxidation polymerization described elsewhere [24]. Fe(NO 3 ) 3 .9H 2 O (0.1; 0.2; 0.4 and 0.8 M) dissolved in water (50 ml), and a yellow solution was obtained (1). NaBH 4 powder was quickly added to the solution until the yellow color vanished (2) [25].…”

Section: Synthesis Of Ppy/fe Photocatalystmentioning

confidence: 99%

“…Different materials like cotton, fibers, and chemicals, including dyes, have been used in textile industries [1]. These synthetic dyes are harmful, detrimental to mammals, and aquatic environments.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic degradation of malachite green dye using zero valent iron doped polypyrrole

Taymaz

Kamış

Yoldaş³

2021

Environmental Engineering Research

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The zero valent iron doped polypyrrole (Ppy/Fe) was synthesized via chemical oxidative polymerization method in diethylene glycol medium for the first time in this study. The characterization of synthesized Ppy and Ppy/Fe composites was realized by using fourier transform infrared spectrometer (FTIR), UV-visible diffuse reflectance spectrometer (DRS), scanning electron microscope (SEM), elemental dispersion X-ray analysis (EDX), four point probe electrical conductivity X-Ray diffraction spectroscopy (XRD) and pH at point of zero charge (pHpzc) methods. These characterizations show that there is an interaction between zero valent iron (Fe0) and Ppy polymer. The photocatalytic activity of synthesized Ppy and Ppy/Fe composite were investigated by degradation of malachite green (MG) dye under UV light irradiation. Ppy/Fe composite was achieved complete degradation within 60 min, which is 5.92 times faster than pure Ppy. The effect of irradiation time, ratio of Ppy and Fe0 in the synthesized composites, photocatalyst amount to photocatalytic efficiency of Ppy/Fe is studied. Also, the photocatalytic stability of Ppy/Fe is investigated under UV light illumination for degradation MG dye.

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Effect of operating parameters on dye wastewater treatment using Prosopis cineraria and kinetic modeling

Cited by 24 publications

References 25 publications

Kinetic and Prediction Modeling Studies of Organic Pollutants Removal from Municipal Wastewater using Moringa oleifera Biomass as a Coagulant

Kinetic and Prediction Modeling Studies of Organic Pollutants Removal from Municipal Wastewater using Moringa oleifera Biomass as a Coagulant

Pre-coagulated landfill leachate treatment by Electro-oxidation using MMO/Ti, Pt/Ti, and graphite anodes

Photocatalytic degradation of malachite green dye using zero valent iron doped polypyrrole

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