Biodegradation Potentials of Cassava Mill Effluent (CME) by Indigenous Microorganisms

Enerijiofi, KE; Ekhaise, FO; Ekomabasi, IE

doi:10.4314/jasem.v21i6.5

Cited by 8 publications

(11 citation statements)

References 2 publications

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“…The faecal coliforms dominated in this study which differs significantly from other similar studies such as that of Enerijiofi et al [23] who obtained Pseudomonas, Bacillus, Acetobacter, Rhizopus, Corynebacterium, Lactobacillus, Micrococcus, Aspergillus, Staphylococcus, Penicillum and Saccharomyces from cassava mill effluent. Pseudomonas and Bacillus dominated.…”

Section: Biological Properties Of Effluent Samplescontrasting

confidence: 97%

“…Cassava processing mills, therefore, traverse the length and breadth of the country. Relatively large volumes of effluent are generated from the different processes required in cassava processing including washing, grating, moisture extraction, sieving and fermentation [23]; Padmaja [24] assert volumes of up to 3.68m 3 ton -1 annually. Cassava processing plants have a high pollution potential due to both the quantity of wastewater produced and its constituents.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Biological Properties Of Effluent Samplescontrasting

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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

Ibiene¹,

Ekwuribe²,

Osadebe³

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The counts were higher in CME-contaminated soil with a concentration of 400 ml than other contaminated soils. Similar investigation attributed the proliferation to bacteria growth, which utilized the organic matter from the CME (Enerijiofi et al, 2017).…”

Section: Ajhse 1(2)mentioning

confidence: 86%

“…Also, the growth of bacterial in the cassava mill contaminated environment could imply that these microbes are utilizing the cassava mill effluents as a medium for growth; thus, implicating the bacteria adapting and subsequently degrading the contaminant (Oviasogie et al, 2014). Enerijiofi et al (2017) reported that cassava mill effluents are rich in organic matters that can be metabolized by microbial enzymes. They also posited that the cassava mill effluents also serve as primary carbon and energy source for the microorganisms.…”

Section: Ajhse 1(2)mentioning

confidence: 99%

“…When attempts are made, they are usually discharged on land or into water bodies indiscriminately (Igbinosa and Igiehon, 2015). The effluents contain large amounts of water, hydrocyanic acid, organic matter and other waste products from the sieve (Enerijiofi et al, 2017). Continuous discharge of these effluents into the environment not only generates offensive odours and damages the aesthetics of the environment, it also poses a serious health and environmental hazard (Okafor, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Rock Phosphate Solubilization and Enzymatic Activities From Indigenous Bacteria on Cassava Mill Effluent Contaminated Soil

Oshoma¹,

Nwodo²,

Obuekwe³

2020

AJHSE

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The processing of cassava into value-added products is associated with discharge of effluents which contain substances that have adverse effect on the environment. Remediative activity of indigenous bacteria can be stimulated by supplementing effluents with phosphorus. Rock phosphate (RP) solubilization and enzymatic activities from bacteria on the cassava mill effluents (CME) contaminated soil was investigated. Soil mixed with varying concentrations of CME (0, 100, 200, 300, 400, 500 and 600 ml) and 10 g of RP were analyzed on days 0 and 16. Parameters analyzed were changes in pH, heterotrophic bacteria load, phosphate-solubilizing bacteria load, available phosphorus, acid phosphatase, cellulase and urease concentrations. The results showed that the medium containing 400 ml CME contaminated soil had the highest phosphate-solubilizing bacteria load (12.60 ± 2.08 x 106 cfu/ml), available phosphorus (126.00 ± 4.08 mg/kg), acid phosphatase (9.54 ± 0.51 mgN/g/min), cellulase (15.24 ± 0.81 mg/g/6h) and urease concentration (2.15±0.22 mg/g/2h). The control had the lowest phosphate-solubilizing bacteria load and enzymatic activity. Biostimulation of indigenous bacteria to enhance the degradation of cassava mill effluent-contaminated soil, using rock phosphate, showed promising results. This implies that rock phosphate solubilization by indigenous bacteria in CME-contaminated soils could be important for the remediation and reclamation of contaminated lands.

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Response surface methodology optimization of the effect of pH, contact time, and microbial concentration on chemical oxygen removal potential of vegetable oil industrial effluents

Onadeji,

Sani,

Abubakar

2024

Water Environment Research

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The vegetable oil refinery industry generates highly polluted effluents during oil production, necessitating proper treatment before discharge to prevent environmental hazards. Treating such wastewater has become a major environmental concern in developing countries. Chemical oxygen demand (COD) is a key parameter in assessing the wastewater's organic pollutant load. High COD levels can lead to reduced dissolved oxygen in water bodies, negatively affecting aquatic life. Various technologies have been employed to treat oily wastewater, but microbial degradation has gained attention due to its potential to remove organic pollutants efficiently. This study aims to optimize the biodegradation treatment process for vegetable oil industrial effluent using response surface methodology (RSM). The wastewater's physicochemical properties were characterized to achieve this, and COD removal was analyzed. Furthermore, RSM was used to investigate the combined effects of pH, contact duration, and microbial concentration on COD removal efficiency. The result showed that the microbial strain used recorded a maximum COD removal of 92%. Furthermore, a quadratic model was developed to predict COD removal based on the experimental variables. From the analysis of variance (ANOVA) analysis, the model was found to be significant at p < 0.0004 and accurately predicted COD removal rates within the experimental region, with an R2 value of 90.99% and adjusted R2 value of 82.89%. Contour plots and statistical analysis revealed the importance of contact duration and microbial concentration on COD removal.Practitioner Points Response surface methodology (RSM) optimization achieved a significant chemical oxygen demand (COD) removal efficiency of 92% in vegetable oil industrial effluents. The study's success in optimizing COD removal using RSM highlights the potential for efficient and environmentally friendly wastewater treatment. Practitioners can benefit from the identified factors (pH, contact time, and microbial concentration) to enhance the operation of treatment systems. The developed predictive model offers a practical tool for plant operators and engineers to tailor wastewater treatment processes. This research underscores the importance of sustainable practices in wastewater treatment, emphasizing the role of microbial degradation in addressing organic pollutant loads.

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Biodegradation Potentials of Cassava Mill Effluent (CME) by Indigenous Microorganisms

Cited by 8 publications

References 2 publications

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

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

Rock Phosphate Solubilization and Enzymatic Activities From Indigenous Bacteria on Cassava Mill Effluent Contaminated Soil

Response surface methodology optimization of the effect of pH, contact time, and microbial concentration on chemical oxygen removal potential of vegetable oil industrial effluents

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