Adsorptive study of coagulation treatment of paint wastewater using novel Brachystegia eurycoma extract

Menkiti, Matthew Chukwudi; Okoani, Anthony; Ejimofor, M.I.

doi:10.1007/s13201-018-0836-1

Cited by 37 publications

(8 citation statements)

References 29 publications

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“…6d), indicating there are 2 determining step, namely surface adsorption followed by intra-particle diffusion. Similar conclusions of removal kinetic were also obtained in previous researches [6,10,50,51].…”

Section: Effect Of Magnetic Coagulant Dosagesupporting

confidence: 90%

Adsorbed leucaena protein on citrate modified Fe3O4 nanoparticles: synthesis, characterization, and its application as magnetic coagulant

Kristianto

Reynaldi

Prasetyo

et al. 2020

Sustain Environ Res

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Natural coagulants from plants resources have gained a lot of attention as it is renewable, biodegradable, non-hazardous, lower cost, and less sludge generated compared to chemical coagulants. However there are still some drawbacks, namely long settling time and possible increase of dissolved organic carbon in the treated water. In this paper we tried to address these drawbacks by utilizing citrate modified Fe3O4 to adsorb protein from Leucaena leucocephala as the active coagulating agent. The effect of trisodium citrate concentration and protein adsorption pH to the adsorbed protein was investigated. It was found that the trisodium citrate concentration of 0.5 M and pH 4.0 gave the highest protein adsorption. The obtained magnetic coagulant was furthermore characterized using Scanning Electron Microscopy, X-ray Diffraction, Fourier Transform Infrared Spectroscopy, and Transmission Electron Microscopy to observe the characteristics before and after protein adsorption. Furthermore, the effect of pH (2 to 10) and coagulant dosage (60 to 600 mg L− 1) to the removal of synthetic Congo red wastewater and sludge volume formation was investigated. It was found that pH 3 was the best pH for coagulation due to charge neutralization mechanism of leucaena protein. Furthermore the highest removal was obtained at dosage 420 mg L− 1 with 80% removal. This result was comparable with crude extract of leucaena with half settling time (20 min) and lower increase of permanganate value, indicating lower increase of dissolved organics in the treated water.

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Section: Effect Of Magnetic Coagulant Dosagesupporting

confidence: 90%

Adsorbed leucaena protein on citrate modified Fe3O4 nanoparticles: synthesis, characterization, and its application as magnetic coagulant

Kristianto

Reynaldi

Prasetyo

et al. 2020

Sustain Environ Res

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“…The GSC (Fig. 1C) was extracted using the method of Menkiti et al [7], which involved defatting the powdered sample with n-hexane and extracting it with 0.2, 0.6, 1, 2, and 4 molar concentrations of NaCl in a 1:10 (w/v) ratio (solid-solution ratio). A magnetic stirrer was used to swirl this mixture for 30 minutes, and the obtained solution was filtered with Whatman filter paper # 3 to remove the spent solid.…”

Section: Preparation and Extraction Of Groundnut Shell Coagulants (Gsc)mentioning

confidence: 99%

“…The optimum dosage and pH determined above were employed at temperatures of 298 K, 308K and 318K, taking into account the temperature at which the wastewater was discharged into the environment. Also, there is a possibility of commencement of floc clogging and splintering at temperatures below 298 K and above 318 K [7].…”

Section: Effect Of Temperature Variationmentioning

confidence: 99%

“…The cost of the imported chemicals can be an issue for developing countries [4]. This has led to increased interest in the development of natural coagulants such as peanut [4], Moringa Oleifera [1,5], Okra pod [6], cottonseed [2], Brachystegia Eurycoma extract [7], Beans extract [8], Garcinia kola Seeds [9]. These natural coagulants have the advantage of being cost-effective, readily available, highly biodegradable and producing minimal residue.…”

Section: Introductionmentioning

confidence: 99%

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Kinetics Studies on the Coagulation of Abattoir Wastewater Using Groundnut Shell Extract as a Natural Coagulant

Nweke

Chukwuma

Evbuomwan

et al. 2021

JERR

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This paper investigated the use of extract from groundnut shells as a natural coagulant for the reduction of turbidity in abattoir wastewater using the coagulation process. The ideal concentration of NaCl for coagulant extraction was established through a series of jar tests. The effects of process variables of coagulant dosage (1-5 g/L), settling time (0-60 min), pH (2-10) and temperature (298-318 K) on the turbidity reduction efficiency were examined using a bench-scale jar test. At an optimal condition of 4g/L, pH 8, temperature of 318K, and settling period of 20 minutes, a reduction efficiency of 94.33% was achieved. The Second-order per-kinetic theory of Von-Smoluchowski’s was used for kinetic evaluation at temperatures of 298 K, 308 K and 318 K. At a temperature of 298 K, the experimental data fit perfectly into the Von-Smoluchowski second-order per-kinetics theory, with a correlation coefficient of 0.952, coagulation rate constant of 0.00002 L/(mg.min), collision efficiency of 8.703exp12 and coagulation time of 48.27 min, establishing that the rapid coagulation theory holds true for the coagulation of abattoir wastewater using groundnut shell extract and under the experimental conditions. As a result of the findings, it is proposed that groundnut shell extract, which is readily available and environmentally safe, is effective for turbidity reduction of sewage water and can be used as an alternative to chemical coagulants for the pre-treatment of abattoir wastewater.

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“…The amount of sludge produced might increase; consequently, a sludge dewatering system might not be sufficient (Riera-Torres et al, 2010). The settling time was found to affect the stabilization and destabilization of the charged particles depending on whether equilibrium was reached or not (Menkiti, Okoani, & Ejimofor, 2018). Consequently, this will affect the efficiency of the coagulation process.…”

Section: Process Optimizationmentioning

confidence: 99%

Multi-response optimization of the coagulation process of real textile wastewater using a natural coagulant

Redha

2020

Arab Journal of Basic and Applied Sciences

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The present study is an attempt to investigate the applicability of a natural coagulant Moringa Oleifera (MO) as a potential impending alternative for the treatment of textile wastewater. Face Central Composite Design in Response Surface Methodology was used to optimize the performance of the coagulation process in terms of turbidity and colour removal efficiency. Three independent variables which are pH (2-4), coagulant dosage (4-8 ml) and settling time (10-30 min) were investigated. Quadratic models were developed for each response and their statistical fitness was evaluated using ANOVA analysis. All models were proved to be statistically adequate with R 2 higher than 96%. Of the investigated variables, pH was found to have significant effect on both responses (P-value <0.001), whereas, coagulant dosage affected the colour removal efficiency significantly. Multi-response optimization was applied to optimize the process variables for both responses simultaneously using the RSM desirability function approach. Maximum turbidity reduction by more than 81% and colour removal efficiencies by more than 77% were reached at the optimum conditions of pH 2, coagulant dosage 4 mL and settling time 21 min. These results prove that MO could be used as an alternative to the conventional coagulants for real textile wastewater treatment.

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Adsorptive study of coagulation treatment of paint wastewater using novel Brachystegia eurycoma extract

Cited by 37 publications

References 29 publications

Adsorbed leucaena protein on citrate modified Fe3O4 nanoparticles: synthesis, characterization, and its application as magnetic coagulant

Adsorbed leucaena protein on citrate modified Fe3O4 nanoparticles: synthesis, characterization, and its application as magnetic coagulant

Kinetics Studies on the Coagulation of Abattoir Wastewater Using Groundnut Shell Extract as a Natural Coagulant

Multi-response optimization of the coagulation process of real textile wastewater using a natural coagulant

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