Physicochemical and microbiological characterization of effluents from the “Centre Hospitalier Universitaire de la Mère et de l’Enfant Lagune (CHU-MEL)” discharged in the Cotonou lagoon in Benin

Adanlokonon, Elias Alexandre Sètondji; Kanhounnon, Wilfried Gbèdodé; Chabi, Boni Christophe; Adjahouinou, Dogbè Clément; Koumolou, Luc; Bonou, Brice; Fiogbé, Emile Didier; Edorh, Patrick A.

doi:10.4314/ijbcs.v12i4.34

Cited by 9 publications

(13 citation statements)

References 10 publications

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“…Such a modification may be responsible for the unpleasant odors of the effluents [24]. [11] made the same remarks on the same hospital effluents.…”

Section: Discussionmentioning

confidence: 91%

“…Indeed, most of the recorded electrical conductivity values are between 333 and 666 µS/cm (table 1) except from the first sampling where the recorded value is equivalent in average to 1273 µS/cm [24]. These values are lower than those obtained by Adanlokonon et al (2018) on the hospital effluents that led them to conclude that CHU-MEL effluents discharged into the Cotonou lagoon are highly mineralized. These differences may depend on the origin of the effluents (the hospital has several medical services) and the timing of their sampling.…”

Section: Discussionmentioning

confidence: 99%

“…The comparative effluents analysis at the inlet and the outlet of CNHU-HKM treatment station, has shown that chemical and biological treatments are inefficient [10]. Concerning the CHU-MEL, a characterization study of its effluents discharged into the Cotonou lagoon also revealed the inefficiency of treatment processes [11]. The discharge of these effluents into aquatic environments contributes to the pollution of these ecosystems and exposes people to infections caused by multi-resistant microorganisms.…”

Section: Introductionmentioning

confidence: 99%

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Heavy Metal Content (Hg. Pb. Cd and Fe) of CHU-MEL Effluents Discharged in the Cotonou Lagoon (Benin)

Adanlokonon¹,

Chabi²,

Kanhounnon³

et al. 2019

IJEPP

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This study is conducted to characterize the heavy metal contamination of CHU-MEL effluents discharged into the Cotonou lagoon in order to assess the potential risk of these discharges for this ecosystem. To achieve this objective, the effluents collected at the end of the pipes acting as weirs in the lagoon were analyzed. The results from physico-chemical and heavy metals analyzes have made it possible to assess the quality of the effluents. The values of pH, temperature, conductivity, TDS and dissolved oxygen measured in situ are, on average, 7.95; 29.60°C; 639.60 µS/cm; 457.48 mg/l and 0.22 mg/L. The determination of heavy metals in the effluents showed low levels of contamination. The average levels of lead, cadmium, mercury and total iron are 0.1727 mg/L, 0.0261 mg/L, 0.0010 mg/L and 0.25 mg/L, respectively. This study shows that most of the parameters studied in the CHU-MEL effluent are in compliance with the standards. These effluents therefore pose a low risk for the aquatic organisms of the receiving environment, this added to the dilution effect of the effluents in the waters of the lagoon. However, the continual discharge of these effluents into the lagoon with their share of heavy metals.

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“…Such a modification may be responsible for the unpleasant odors of the effluents [24]. [11] made the same remarks on the same hospital effluents.…”

Section: Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Heavy Metal Content (Hg. Pb. Cd and Fe) of CHU-MEL Effluents Discharged in the Cotonou Lagoon (Benin)

Adanlokonon¹,

Chabi²,

Kanhounnon³

et al. 2019

IJEPP

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“…The concentration of suspended solids is higher than that set by WHO [ 41 ] and their degradation consumes a significant amount of available oxygen. Therefore, the photosynthetic process of phytoplankton underwater will decrease due to the limited dissolved oxygen in the aquatic environment [ 42 ]. The analysis of the results shows that the BOD 5 and COD concentrations are very high.…”

Section: Discussionmentioning

confidence: 99%

Assessment of the quality of effluent management from university hospitals in the Littoral department in Benin

et al. 2021

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Background Liquid discharges from hospitals (effluents) threaten the environment and are now a central concern of all stakeholders in the health system and those in the protection of the environment. The management of effluents is a major problem in developing countries. The objective of this study was to assess the quality of effluent management at the level of university hospital centers (CHU) in the Littoral region in Benin. Methods It was a cross-sectional, descriptive, evaluative study that took place in 2020 to assess the “structure”, “process” and “results” components according to standard thresholds (Bad: < 60%; Acceptable: [60–80% [and Good: ≥ 80%). Results In all the CHUs, all the components, as well as the overall quality of the management of hospital effluents, had a score between 0 and 60%, with an assessment deemed bad. The poor quality of the process highlighted the non-compliance with standards relating to the management of hospital liquid discharges. Several factors linked to the “structure”, “process” and “results” components at the same time explain this poor management of university hospitals effluents. Conclusion These effluents discharged without prior treatment into wastewater could constitute a source of dissemination of potentially pathogenic microorganisms. It is therefore important to develop methods for treating these effluents before they are released into the natural environment.

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“…The management of hospital wastewater is a real problem in developing countries, due to the inexistence of wastewater treatment and purification stations [3]. This hospital wastewater is continuously discharged into natural receptacles such as the ocean and lake, despite the ecotoxicity of 5 to 15 times greater than urban's [4]. Despite the ignorance of the quality of the wastewater produced by hospitals in Benin, they are continually discharged into Lake Nokoué and sea.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Four University Hospitals Wastewater in Cotonou, Benin

Sopoh¹,

Dégbey²,

Todedji³

et al. 2021

OJEpi

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Physicochemical and microbiological characterization of effluents from the “Centre Hospitalier Universitaire de la Mère et de l’Enfant Lagune (CHU-MEL)” discharged in the Cotonou lagoon in Benin

Cited by 9 publications

References 10 publications

Heavy Metal Content (Hg. Pb. Cd and Fe) of CHU-MEL Effluents Discharged in the Cotonou Lagoon (Benin)

Heavy Metal Content (Hg. Pb. Cd and Fe) of CHU-MEL Effluents Discharged in the Cotonou Lagoon (Benin)

Assessment of the quality of effluent management from university hospitals in the Littoral department in Benin

Characterization of Four University Hospitals Wastewater in Cotonou, Benin

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