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

Adelodun, Bashir; Ogunshina, Matthew; Ajibade, Fidelis Odedishemi; Sholagberu, Abdulkadir Taofeeq; Bakare, Hashim Olalekan; Choi, Kyung-Sook

doi:10.3390/w12072052

Cited by 29 publications

(24 citation statements)

References 40 publications

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“…Furthermore, the plateau of R-values revealed the degree of particle aggregation with respect to time taken for floc breakage to occur. The presence of floc breakage and the results obtained confirm that incorporation of the F increased the molecular weight of the coagulant components [ 50 , 52 ].…”

Section: Resultsmentioning

confidence: 74%

“…The data obtained was fitted to kinetics Equations (7) and (9) to evaluate the performance for the treatment of the contaminants. The pollutant removal rate in a reaction-based system depends on numerous internal and external factors such as temperature, dosage, and the characteristics of wastewater itself [ 52 ]. When the reaction proceeds, pollutant particles attach themselves to both chemical and physical binding sites.…”

Section: Resultsmentioning

confidence: 99%

“…It could be suggested that the addition of F to other coagulants resulted in rapid floc agglomeration and greater floc size, which increased the coagulation efficiency and sedimentation. Thus, the extent of aggregation and flocculation dynamics were observed shortly after the addition of the coagulants, whereby the destabilized particles aggregated to form larger flocs [ 52 ]. Furthermore, the plateau of R-values revealed the degree of particle aggregation with respect to time taken for floc breakage to occur.…”

Section: Resultsmentioning

confidence: 99%

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Coagulation Treatment of Wastewater: Kinetics and Natural Coagulant Evaluation

2021

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In this study, three coagulants (ferromagnetite (F), alum (A), and eggshells (E)) and their hybrids (FA, FE, and FEA) were investigated as possible cost-effective coagulants for the treatment of industrial wastewater. Scanning electron microscopy (SEM) coupled with energy-dispersive X-ray (EDX) was used to characterize the morphological and elemental compositions of the coagulants. The effects of coagulant dosage (10–60 mg/L) and settling time were investigated for the removal of turbidity, color, and total suspended solids. A jar tester (JTL6) operating at conditions of 150 rpm for 2 min (rapid mixing) and 30 rpm for 15 min (slow mixing) was employed. Results from the characterized supernatant showed about 80% removal of the contaminants. The prospects of F were proven to be the most effective as compared to the binary (FA > FE) and the ternary hybridized (FEA) coagulants. At an optimum dosage and settling time of 20 mg/L and 30 min, respectively, the treatability performance of F was clearly proven to be viable for wastewater treatment.

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Section: Resultsmentioning

confidence: 74%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Coagulation Treatment of Wastewater: Kinetics and Natural Coagulant Evaluation

2021

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“…There was, however, no significant influence in other physicochemical parameters including the pH. Adelodun et al [49] also found that there was no significant difference in turbidity removal for MO dosage 150mg/L and 200mg/L. The result from a study on municipal effluent treatment using seed of MO depicted that turbidity removal reached a maximum of 94.44% with 15% MO biomass, this decreased marginally to 94.42% when the concentration was raised to 20%.…”

Section: Physicochemical Properties Of Effluent Samplesmentioning

confidence: 96%

Biotreatment of Effluent from Cassava Processing Using Powdered Seeds of Moringa oleifera

Ibiene¹,

Ekwuribe²,

Osadebe³

et al. 2021

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The world is facing increasingly more severe water security issues. It has, therefore, become imperative to develop sustainable, eco-friendly water management and recycling techniques. This study assessed the capacity of powdered seeds of Moringa oleifera to improve water quality of effluent from two (2) cassava processing plants in Umudike, Nigeria by measuring the variations in specific physicochemical and microbiological parameters of the samples. The biodegradability indices of the wastewater samples were determined as 0.513 and 0.507 for Plants 1 and 2 respectively indicating samples that were fairly biodegradable and treatable biologically. At the end of the 7-day study, turbidity reduced by 59.6% -63.2% while chemical oxygen demand (COD), biochemical oxygen demand (BOD) and total organic carbon values dropped by 66.6% -74.1%, 86.7% -88.2% and 67.0% -72.6% respectively. Correlation analysis showed a strong positive correlation between BOD 5 and COD for both Plants 1 and 2. The total heterotrophic and coliform bacteria were completely removed by around day 5 of the study. The observed bacterial isolates in the effluent at onset were Escherichia coli, Bacillus sp., Klebsiella sp., Salmonella sp., Streptococcus faecalis, Shigella sp. and Aerobacter aerogenes. This study confirms the efficiency of powdered seeds of M. oleifera in biotreatment of wastewater from cassava processing plants.

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“…The ability of Moringa oleifera (MO) seeds as a coagulant to remove turbidity, biochemical oxygen demand (BOD), and chemical oxygen demand (COD) from urban wastewater was investigated by Adelodun et al [5]. Their outcomes indicated that employing a MO dose of 150 mg/L, the maximal reduction in turbidity, BOD, and COD was 94%, 69%, and 58%, respectively.…”

mentioning

confidence: 99%