Removal of Trace Pharmaceuticals from Water using coagulation and powdered activated carbon as pretreatment to ultrafiltration membrane system

Sheng, Chenguang; Nnanna, A. G. Agwu; Liu, Yanghe; Vargo, John D.

doi:10.1016/j.scitotenv.2016.01.179

Cited by 144 publications

(35 citation statements)

References 36 publications

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“…Studies show that bank filtration significantly removes pharmaceuticals such as antibiotics [21][22][23]. A retention of drugs can be improved with flocculation and/or activated carbon before ultrafiltration [24]. This supports the statement that drinking water treatment via ultrafiltration without flocculation of surface water is not effective for operational and economic reasons.…”

Section: Discussionsupporting

confidence: 57%

The AquaNES Project: Coupling Riverbank Filtration and Ultrafiltration in Drinking Water Treatment

Haas¹,

Opitz²,

Grischek

et al. 2018

Water

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Natural water treatment techniques combined with engineered solutions were investigated at demonstration sites in Europe within the AquaNES project. Ultrafiltration is well-established in water treatment, but is not feasible for many water utilities due to its high operational costs compared to conventional treatment. These differences in cost are caused by membrane fouling and the associated cleaning required. This study aims to assess the economic and energetic operation factors based on studies of an out/in ultrafiltration treatment plant for river water and bank filtrate. The fouling potential of both raw water sources was investigated as well as the quality of the resulting water. In addition, the results show the potential utility of a combined approach utilizing bank filtration followed by ultrafiltration in drinking water treatment. In a separate consideration of the treatment process, the water quality does not fulfill the requirements of the German drinking water ordinance. A new method for the removal of dissolved manganese from the bank filtrate is presented by inline electrolysis. While this improves water quality, this also has a significant influence on fouling potential and, thus, on operating costs of ultrafiltration. These aspects lead to a fundamental decision for operators to choose between more costly ultrafiltration with enhanced microbiological safety compared to cost-effective but less stringent drinking water treatment via open filtration.

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Section: Discussionsupporting

confidence: 57%

The AquaNES Project: Coupling Riverbank Filtration and Ultrafiltration in Drinking Water Treatment

Haas¹,

Opitz²,

Grischek

et al. 2018

Water

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“…These chemicals not only contaminate the drinking water but also affect the endocrine function in fishes and sea creatures which adversely affect humans and animals (Brown, Paxéus, Forlin, & Larsson, ; Pomati, Netting, Calamari, & Neilan, ). There are several conventional techniques such as adsorption (Gil, Santamaría, & Korili, ), chemical coagulation and clotting (Saitoh, Shibata, & Hiraide, ; Sheng, Nnanna, Liu, & Vargo, ), chemical deposition, and solidification and formation of chlorides (Baghdadi, Ghaffari, & Aminzadeh, ) for the organic pollutants’ removal. These methods have some disadvantages such as high costs, low efficiency, and incomplete decomposition (El‐Shafey, Al‐Lawati, & Al‐Sumri, ).…”

Section: Introductionmentioning

confidence: 99%

Pharmaceutical wastewater treatment using UV‐enhanced electro‐Fenton process: Comparative study

Behfar

Davarnejad

2019

Water Environment Research

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In this research, treatment of a pharmaceutical wastewater (PhW) obtained from a factory by electro-Fenton (EF) and photoelectro-Fenton (PEF) processes was investigated. The effects of several parameters involving pH, current density, H 2 O 2 /Fe 2+ molar ratio, volume ratio of H 2 O 2 /PhW, UVA light, and time were studied. The experiments were designed by Design Expert software, and response surface methodology (RSM) was applied to determine the optimum conditions for the highest COD removal. According to the analysis of variance (ANOVA), time was the most significant parameter on the process response (COD removal) followed by current density. The optimal conditions for 86.85% of COD removal through the EF process were at pH of 2.96, current density of 42.90 mA/cm 2 , H 2 O 2 /Fe 2+ molar ratio of 3.78, volume ratio of H 2 O 2 /PhW of 1.37 ml/L, and reaction time of 58.49 min, while the optimal conditions for 93.00% of COD removal through PEF process were at pH of 2.91, current density of 43.71 mA/cm 2 , H 2 O 2 /Fe 2+ molar ratio of 4.29, volume ratio of H 2 O 2 /PhW of 1.67 ml/L, UVA light of 6 W, and reaction time of 54.24 min. It was concluded that UVA light can increase the COD removal through PEF process around 7% more than that of the EF process at optimum conditions. • Practitioner points• Treatment of a pharmaceutical wastewater by EF and PEF processes was investigated. • Effects of several parameters were entirely studied on both the processes. • RSM was applied to determine optimum conditions for the highest COD removal for both the processes. • UVA light increased COD removal through PEF process (around 7%) at the optimum conditions.

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“…Some research has highlighted the advantages of adsorption of wastewater containing humic acid and found that some adsorbents possess high adsorption capacity due to its high maturation effects [28] and the results showed that the presence of adsorbents in the pretreated water had revealed a much less visible of the membrane [29].…”

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confidence: 99%

“…It would be ideal to study ultrafiltration membrane behavior in retention of humic acid in combination with inorganic salts because the foulling of the membrane during the process occurs as a result of the concentration of these salts, and through these salts it can be noticed how high the influence of the presence of humic acid in the supply water [11,12,[26][27][28][29][30][31].…”

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confidence: 99%

Studies of Humic Acid Removal from Aqueous Systems by Using Polymeric Membrane Ultrafiltration Process

Tataru¹,

Nedeff²,

Bârsan³

et al. 2018

Mat.Plast.

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This paper proposes to investigate in detail the behavior of polymeric membranes ultrafiltration process uses in the retention of humic acid from aqueous systems. Nowadays, the aqueous systems (contaminated water and/or wastewater) resulting from various domestic and industrial activities contain many contaminants, some of them increasingly dangerous to the environment. Laboratory testing of membranes in the ultrafiltration process as well as their experimentation with different chemical compounds is essential because it is important to know how they can be eliminated before they cause a negative impact. Testing of polymeric membranes consists in carrying out the process of ultrafiltration of aqueous systems containing humic acid over a set time, following the variation in time of the volume of permeate obtained as well as the influence of process parameters. Following the investigation of the ultrafiltration process of the water through the polymeric membrane, it was found that the formation of the humic acid layer on the surface of the membrane that favors fouling is delayed, after many hours of operation, due to both the internal fiber structure which offers advantages to this type of membranes as well as high efficiency of humic acid retention. Experimental results showed that the humic acid retention rate increased by up to 37% as a result of the double decrease of the conductivity value in the permeate samples from about 600 mS/cm to 373 mS/cm and the temperature being continuously increasing, from 22.5 at 25oC over 5 h influenced the entire ultrafiltration process. The full process approach as well as the expression and interpretation of the results will be detailed in this paper.

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Removal of Trace Pharmaceuticals from Water using coagulation and powdered activated carbon as pretreatment to ultrafiltration membrane system

Cited by 144 publications

References 36 publications

The AquaNES Project: Coupling Riverbank Filtration and Ultrafiltration in Drinking Water Treatment

The AquaNES Project: Coupling Riverbank Filtration and Ultrafiltration in Drinking Water Treatment

Pharmaceutical wastewater treatment using UV‐enhanced electro‐Fenton process: Comparative study

Studies of Humic Acid Removal from Aqueous Systems by Using Polymeric Membrane Ultrafiltration Process

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