Pharmaceutical adsorption from the primary and secondary effluents of a wastewater treatment plant by powdered activated carbon

Hu, Jingyi; Shang, Ran; Frolova, Marta; Heijman, S.G.J.; Rietveld, L.C.

doi:10.1080/19443994.2015.1123197

Cited by 9 publications

(5 citation statements)

References 27 publications

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“…[9] Within the field of adsorption, the application of natural adsorbents that are derived from agro-industrial residues or renewable sources such as biomass (biosorbents) represents an alternative for the removal of a large amount of pollutants from aqueous systems, presenting advantages over the other techniques. [10] The biosorbents are materials with a low cost due to the abundance of biomass, which present high selectivity and can be regenerated, extending the useful life of waste materials. Also, the biosorption process requires fewer sophisticated operation skills, presents limited sludge generation, and usually presents efficiency comparable to normal adsorbents and even to the other conventional techniques.…”

Section: Introductionmentioning

confidence: 99%

Low‐cost biosorbent based on Moringa oleifera residues for herbicide atrazine removal in a fixed‐bed column

Homem

Vieira

2018

Can J Chem Eng

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A low‐cost biosorbent based on Moringa oleifera Lam (MO) seed husks was used in order to remove atrazine (ATZ) from aqueous solutions in a continuous system. The influence of some parameters, such as bed depth, flow rate, pH, and inlet concentration, on ATZ biosorption was investigated. The breakthrough and saturation time increased with the increase of bed depth. However, the opposite behaviour was observed for the flow rate. The sorption capacity, breakthrough, and saturation time were similar at all values of pH tested. Increasing the inlet concentration, the MO sorption capacity also increased, while the breakthrough and saturation time decreased. The Adams‐Bohart, Thomas, dose‐response, and Yoon‐Nelson models were applied to predict the breakthrough curves. All models showed good agreement with the experimental data, presenting good values of the correlation coefficient (R2). The results showed that MO seed husks can be effectively used as a biosorbent to remove the atrazine in aqueous solutions, achieving five cycles of biosorption‐desorption without loss of biosorption capacity, which demonstrates the potential of MO as a biosorbent for the removal of ATZ being a low‐cost and efficient alternative to the use of conventional materials.

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Section: Introductionmentioning

confidence: 99%

Low‐cost biosorbent based on Moringa oleifera residues for herbicide atrazine removal in a fixed‐bed column

Homem

Vieira

2018

Can J Chem Eng

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“…The main treatment processes include preozonation, coagulation, precipitation, sand filtration, ozonation, BAC filtration, and chlorine disinfection. The activated carbon in many BAC filters can be used for 8-10 years [23][24][25][26]. The authors selected BAC filters with running times of 1 year and 8-9 years to represent new and old BAC filters in this study.…”

Section: Experimental Procedures 221 Water Samplesmentioning

confidence: 99%

Does Biological Activated Carbon Filtration Make Chlor(am)inated Drinking Water Safer

Pan

Wang

Zhang

et al. 2022

Water

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Biological activated carbon (BAC) filtration is an effective technology for the removal of natural organic matter. However, one potential drawback of BAC, especially old BAC, is that effluents can contain soluble microbial products released from the biofilm, which are recognized as more toxic nitrogenous DBPs (N-DBPs) precursors. So far, limited studies reported the risk of DBP formation potentials (FPs) increase caused by the microbial leakage of BAC. This study compared removal differences of DBP FPs between two BAC filters operated for 1 year and 8 years in a drinking water plant. The results showed that the total summed haloacetic acid FPs and trihalomethane FPs decreased by 34.31% from chlorination, and 55.01% of the total summed halogen acetonitrile FPs from chloramination were removed by the new BAC. However, Chlorinated haloacetonitriles FPs increased by 2.33% after old BAC filtration. To sum up, BAC filtration decreased most DBP FPs, but a potential risk regarding more toxic N-DBP FPs from old BAC should receive more attention.

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“…Sewage treatment plants play an important role in improving water quality and efficient use of water resources. After sedimentation treatment, the effluent (primary effluent) is further treated to remove dissolved pollutants using biological resources, and is called secondary effluent ( Hu et al, 2016 ). The secondary effluent produced by anaerobic-anoxic-aerobic (A 2 O) process, the most used sewage treatment process in China, is the effluent with lower organic matter, nitrogen, and phosphorus content.…”

Section: Introductionmentioning

confidence: 99%

Advanced treatment of secondary effluent from wastewater treatment plant by a newly isolated microalga Desmodesmus sp. SNN1

et al. 2023

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Secondary effluents contain considerable amounts of nitrogen and phosphorous, which if dumped untreated can cause eutrophication of the receiving water bodies. Microalgae can remove these nutrients and other pollutants from the wastewater effluents and play an effective role in the secondary effluent treatment. In this study, six microalgae strains (SNN1, SNN2, SNN3, SNN4, SNS1, and SNS2) were isolated and screened from the water and mud of Yingxue Lake of Shandong Jianzhu University, and their efficiencies for the removal of COD, NH4+-N, TN, and TP in the secondary effluent were assessed. By comparing the growth performances and nutrient removal ability of algal strains in domestic sewage, we found that SNN1 (identified and named as Desmodesmus sp. SNN1) has the highest efficiency for biomass accumulation and sewage purification. Hence, the algal strain SNN1 was selected for further screening and optimization experiments. The strain showed higher biomass yield and better nutrient removal rate when the pH of secondary effluent was 9.0 and the initial inoculum concentration (optical density at 680 nm) of algal strain was 0.4. After 12 days of treatment, the concentrations of COD, NH4+-N, TN, and TP in the secondary effluent were 31.79, 0.008, 8.631, and 0.069 mg/L, respectively. Therefore, SNN1 with the removal rates of 52.69% (COD), 99.99% (NH4+-N), 89.09% (TN), and 94.64% (TP) displayed its high potential in nutrient removal. In addition, it also yielded 5.30 mg/L of chlorophyll a and 168.33 mg/L of lipids. These results demonstrated that this strain exhibited an effective treatment capacity for secondary effluent and microalgal oil production. This study is helpful to provide a strategy for the resource utilization of secondary effluent and the conservation of freshwater resources required by microalgae culture.

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Pharmaceutical adsorption from the primary and secondary effluents of a wastewater treatment plant by powdered activated carbon

Cited by 9 publications

References 27 publications

Low‐cost biosorbent based on Moringa oleifera residues for herbicide atrazine removal in a fixed‐bed column

Low‐cost biosorbent based on Moringa oleifera residues for herbicide atrazine removal in a fixed‐bed column

Does Biological Activated Carbon Filtration Make Chlor(am)inated Drinking Water Safer

Advanced treatment of secondary effluent from wastewater treatment plant by a newly isolated microalga Desmodesmus sp. SNN1

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