Tertiary treatment of a municipal wastewater toward pharmaceuticals removal by chemical and electrochemical advanced oxidation processes

Moreira, Francisca C.; Soler, J.; Alpendurada, M.F.; Brillas, Enric; Vilar, Vítor J.P.

doi:10.1016/j.watres.2016.08.036

Cited by 120 publications

(23 citation statements)

References 52 publications

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“…Moreover, in households, the unused and expired pharmaceuticals are disposed with normal household waste or discarded into sink or toilet and released into sewage systems [7] [8] [9] [10] [11]. In developing countries where there are wastewater treatment plants, trace of pharmaceuticals is found in discharged water after the wastewater treatment plant (WWTP) operation [12]. Such situation has raised much concern about the pollution of water bodies by pharmaceuticals such as antibiotics, and iodide contrast products.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Physicochemical and Microbiological Parameters of a Teaching Hospital’s Wastewaters in Abidjan in Côte d’Ivoire

Placide¹,

Mohamed²,

Hélène³

et al. 2016

JWARP

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This work deals with the physicochemical and microbiological characterization of a hospital wastewater that is directly discharged in water bodies without treatment. Our focus was paid on the teaching hospital of Treichville (Cote d'Ivoire). For the purpose, various physicochemical parameters such as temperature, pH, dissolved oxygen, total dissolved solid, conductivity, nitrate, phosphate, chloride, chemical oxygen demand (COD), biological oxygen demand for five days (BOD 5), salinity, and total suspended solids have been assessed. For the microbiological investigations, the parameters consisting in Pseudomonas aeruginosa, Salmonella and total coliforms have been assessed. From the analysis, it has been found that the wastewaters of the teaching hospital of Treichville are highly loaded in organic pollutants and in pathogens bacteria. The values of nitrate, dissolved oxygen demand, COD, BOD 5 and biological parameters do not respect the international (WHO) values recommended for the water to be discharged in the environment. The ratio COD/BOD 5 has been determined to vary between 1.25 and 2.80. The results showed that the studied wastewater is a domestic type wastewater composed either by mostly biodegradable pollutants or a mixture of biodegradable and non-biodegradable organic pollutants. These wastewaters constitute therefore a risk for the populations since they are discharged in water bodies without any treatment and used by communities.

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Section: Introductionmentioning

confidence: 99%

Assessment of the Physicochemical and Microbiological Parameters of a Teaching Hospital’s Wastewaters in Abidjan in Côte d’Ivoire

Placide¹,

Mohamed²,

Hélène³

et al. 2016

JWARP

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“…Vibrio fisheri inhibition after 15 min of treatment reduced to 14%, while at the same time, the removal of 4.7 mg L −1 organic matter of the effluent was <5% indicating the partial oxidation of the effluent while the UV 254 absorbance decreased to 23% after 15 min. Moreira et al . investigated the simultaneous degradation of various pharmaceuticals and organic matter of the secondary effluent with different electrochemical AOPs based on BDD and air‐diffusion electrodes as the cathode.…”

Section: Resultsmentioning

confidence: 99%

The role of operating parameters and irradiation on the electrochemical degradation of tetracycline on boron doped diamond anode in environmentally relevant matrices

Frontistis

Meriç

2018

J of Chemical Tech & Biotech

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BACKGROUND: Nowadays, due to the inappropriate use of antibiotics, significant quantities have been detected in environmental samples. Therefore there is a need for a technology to eliminate the accumulation of pharmaceuticals in receiving water bodies. In recent years electrochemical oxidation showed superior efficiency for the purification of water from pharmaceuticals. RESULTS: boron doped diamond (BDD) showed better efficiency than platinum electrode and stainless steel for the degradation of 500 g L−1 tetracycline (TC) with 0.1 mol L −1 ·Na 2 SO 4 . The presence of 200 mg L −1 bicarbonates decreased the apparent kinetic constant from 0.328 to 0212 min −1 . Instead, the addition of 200 mg L −1 NaCl increased the kinetic constant by almost four times, while the presence of 10 mg L −1 of humic acid decreased the kinetic constant by 18%. The process was favored in real environmental matrices like bottled water and wastewater in comparison with ultrapure water. The use of BDD as both anode and cathode enhanced the efficiency by almost 20%. The presence of UVA or solar radiation increased the decomposition of tetracycline by 14%. Changes in toxicity to Vibrio fisheri bacteria during treatment of TC in the secondary effluent are mainly attributed to the formation of intermediates of the water matrix itself and does not follow the TC removal. CONCLUSIONS: Electrochemical oxidation was favored for removal of TC in real water matrices due to the presence of chlorides. The use of BDD as both anode and cathode with simultaneous solar irradiation is a promising technology for water remediation from TC.

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“…The primary treatment which aims at removal of large visible particle by trapping or sedimentation, the secondary treatment removes dissolved organic matters via aerobic decomposition while the purity of the wastewater is further enhanced via tertiary treatment process such as filtration, adsorption, chemical oxidation, ozonation and chlorination. While a broad range of pollutants can be removed at the tertiary treatment stage, very low concentration (ng/L to μg/L level) of pollutants, particularly pharmaceuticals persist through the treatment process [14]. WWTP are therefore considered the major source of antibiotic and ARB propagation into the water environment [15].…”

Section: Arb In Wastewater Treatment Plants (Wwtp) and Environmental mentioning

confidence: 99%

Threats from antibiotics: A serious environmental concern

Inyinbor

Bello

Fadiji

et al. 2018

Journal of Environmental Chemical Engineering

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Antibiotics are bioactive substances, used as human and animal medicines for illness prevention, disease treatment and growth promotion. They are considered to be pseudo persistent given their continuous input in the environment. Antibiotics enter agro ecosystems through several routes such as wastewater irrigation, soil application, animal manures or bio-solids which are mostly biologically active thus creating potential risks to the environment. They are present in different environmental matrices at low concentrations as residues. Antibiotic residues enter the environment primarily via urine, feces and manure from humans and animals after they have taken the medication, as well as from manufacturing wastewater. These residues contaminate the soil, surface water, and groundwater by leaching or runoff and ultimately breed antibiotic-resistant bacteria (ARB) and genes (ARG). These triune threat viz antibiotics, ARB and ARG have not been effectively removed by various treatment in wastewater treatment plants. Here, we put together existing knowledge and aim at providing in-depth knowledge to the extent to which a wide range of treatment processes determine the ultimate fate of antibioticbred threats (ARB and ARG) in conventional and advanced wastewater treatment. The use of antibiotics is inevitable, hence studies focusing on minimizing their discharge into the environment viz-a-viz support future regulatory measures are of great importance.

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Tertiary treatment of a municipal wastewater toward pharmaceuticals removal by chemical and electrochemical advanced oxidation processes

Cited by 120 publications

References 52 publications

Assessment of the Physicochemical and Microbiological Parameters of a Teaching Hospital’s Wastewaters in Abidjan in Côte d’Ivoire

Assessment of the Physicochemical and Microbiological Parameters of a Teaching Hospital’s Wastewaters in Abidjan in Côte d’Ivoire

The role of operating parameters and irradiation on the electrochemical degradation of tetracycline on boron doped diamond anode in environmentally relevant matrices

Threats from antibiotics: A serious environmental concern

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Tertiary treatment of a municipal wastewater toward pharmaceuticals removal by chemical and electrochemical advanced oxidation processes

Cited by 120 publications

References 52 publications

Assessment of the Physicochemical and Microbiological Parameters of a Teaching Hospital’s Wastewaters in Abidjan in C&#244;te d’Ivoire

Assessment of the Physicochemical and Microbiological Parameters of a Teaching Hospital’s Wastewaters in Abidjan in C&#244;te d’Ivoire

The role of operating parameters and irradiation on the electrochemical degradation of tetracycline on boron doped diamond anode in environmentally relevant matrices

Threats from antibiotics: A serious environmental concern

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Assessment of the Physicochemical and Microbiological Parameters of a Teaching Hospital’s Wastewaters in Abidjan in Côte d’Ivoire

Assessment of the Physicochemical and Microbiological Parameters of a Teaching Hospital’s Wastewaters in Abidjan in Côte d’Ivoire