Comparing and modeling organic micro-pollutant adsorption onto powdered activated carbon in different drinking waters and WWTP effluents

Zietzschmann, Frederik; Aschermann, Geert; Jekel, Martin

doi:10.1016/j.watres.2016.06.041

Cited by 63 publications

(44 citation statements)

References 26 publications

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“…39 Second, Erpe surface water samples (N ¼ 46) were split and analysed in parallel using the current method and a method (method C) established previously at the Chair of Water Quality Engineering (Technical University Berlin, Berlin, Germany). 40,41…”

Section: Methods Validationmentioning

confidence: 99%

Determination of polar organic micropollutants in surface and pore water by high-resolution sampling-direct injection-ultra high performance liquid chromatography-tandem mass spectrometry

Posselt

Jaeger

Schaper

et al. 2018

Environ. Sci.: Processes Impacts

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Section: Methods Validationmentioning

confidence: 99%

Determination of polar organic micropollutants in surface and pore water by high-resolution sampling-direct injection-ultra high performance liquid chromatography-tandem mass spectrometry

Posselt

Jaeger

Schaper

et al. 2018

Environ. Sci.: Processes Impacts

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“…Samples for TrOC analysis were split and analyzed in parallel via high performance liquid chromatography with tandem mass spectrometry (HPLC-MS/MS) at Technical University of Berlin (TUB) following standard protocols, 24,25 and at the Department of Environmental Science and Analytical Chemistry (ACES) at Stockholm University using a method established previously. 22…”

Section: Analyticsmentioning

confidence: 99%

Hyporheic Exchange Controls Fate of Trace Organic Compounds in an Urban Stream

Schaper

Posselt

McCallum

et al. 2018

Environ. Sci. Technol.

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First-order half-lives for 26 trace organic compounds (TrOCs) were determined in the hyporheic zone (HZ) and along a 3 km reach of a first-order stream in South Australia during both, dry and wet seasons. Two salt tracer experiments were conducted and evaluated using a transient storage model to characterize seasonal differences in stream residence time and transient storage. Lagrangian and time-integrated surface water sampling were conducted to calculate half-lives in the surface water. Half-lives in the HZ were calculated using porewater samples obtained from a modified mini-point sampler and hyporheic residence times measured via active heat-pulse sensing. Half of the investigated TrOCs (e.g. oxazepam, olmesartan, candesartan) were not significantly removed along both the investigated river stretch and the sampled hyporheic flow paths. The remaining TrOCs (e.g. metformin, guanylurea, valsartan) were found to be significantly removed in the HZ and along the river stretch with relative removals in the HZ correlating to reach-scale relative removals. Using the modeled transport parameters, it was estimated that wet season reach-scale removal of TrOCs was predominately caused by removal in the HZ when the intensity of hyporheic exchange was also higher. Factors that increase HZ exchange are thus likely to promote in-stream reactivity of TrOCs.

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“…˗ Adding PAC to the aeration tank. The adsorbed pharmaceuticals and heavy metals are removed with the waste activated sludge (WAS) (Zietzschmann et al 2016;Chang et al 2015). Because the concentration of harmful substances would be higher than normal in the sludge, the sludge wouldn't be immediately applicable for use in agriculture.…”

Section: Removal Of Pharmaceuticalsmentioning

confidence: 99%

Adsorption of Diclofenac, Sulfamethoxazole and Levofloxacin with Powdered Activated Carbon

Lember

Pachel

Loigu

2017

Proccedings of 10th International Conference "Environmental Engineering"

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Abstract. The presence of pharmaceutical residues in the receiving waterbodies of wastewater treatment plants (WWTP) and in the environment has become a global concern. We can now say for certain that, having metabolised in our bodies, partially modified or unmodified pharmaceuticals will reach WWTP. However, WWTP are not designed for the removal of such compounds. Only a small fraction of pharmaceuticals decompose during biological treatment or are adsorbed in sediment. Therefore, it is essential to find a treatment process that is capable of removing pharmaceutical residues. The aim of the present study was to research the removal of three pharmaceuticals found in the environment, namely diclofenac (DCF), sulfamethoxazole (SMX) and levofloxacin (LFX), through the use of powdered activated carbon (PAC). To this end, adsorption tests were conducted where the adsorption capacity was estimated according to the adsorbent dose and the residence time of the process. LFX had the highest adsorption rate: the removal effectiveness was 77% in a residence time of 5 minutes and in 60 minutes a stable indicator was achieved whereby 94% of LFX had become adsorbed. The worst adsorption property was observed for SMX, as 68% of SMX was adsorbed in a residence time of 60 minutes. According to the conducted tests, the Freundlich adsorption isotherms and constants characterising the adsorption were found where the DCF K was 23.8, the SMX K was 34.3 and the LFX K was 106.1. This test demonstrated that the pharmaceuticals selected for the experiment could easily be subjected to adsorption processes and could be removed by means of PAC.

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Comparing and modeling organic micro-pollutant adsorption onto powdered activated carbon in different drinking waters and WWTP effluents

Cited by 63 publications

References 26 publications

Determination of polar organic micropollutants in surface and pore water by high-resolution sampling-direct injection-ultra high performance liquid chromatography-tandem mass spectrometry

Determination of polar organic micropollutants in surface and pore water by high-resolution sampling-direct injection-ultra high performance liquid chromatography-tandem mass spectrometry

Hyporheic Exchange Controls Fate of Trace Organic Compounds in an Urban Stream

Adsorption of Diclofenac, Sulfamethoxazole and Levofloxacin with Powdered Activated Carbon

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