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Journal articles on the topic 'Pollutant Removal Performance'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Vollertsen, Jes, Svein Ole Åstebøl, Jan Emil Coward, Tor Fageraas, Asbjørn Haaning Nielsen, and Thorkild Hvitved-Jacobsen. "Performance and Modelling of a Highway Wet Detention Pond Designed for Cold Climate." Water Quality Research Journal 44, no. 3 (2009): 253–62. http://dx.doi.org/10.2166/wqrj.2009.027.

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Abstract A wet detention pond in Norway has been monitored for 12 months. The pond receives runoff from a highway with a traffic load of 42,000 average daily traffic. Hydraulic conditions in terms of inflow, outflow, and pond water level were recorded every minute. Water quality was monitored by volume proportional inlet and outlet samples. During most of the year, excellent pollutant removal was achieved; however, during two snowmelt events the pollutant removal was poor or even negative. The two snowmelt events accounted for one third of the annual water load and for a substantial part of th

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Hatt, B. E., T. D. Fletcher, and A. Deletic. "Pollutant removal performance of field-scale stormwater biofiltration systems." Water Science and Technology 59, no. 8 (2009): 1567–76. http://dx.doi.org/10.2166/wst.2009.173.

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The pollutant removal performance of three separate stormwater biofiltration systems in two different climates was assessed. At one of the sites, rain events were simulated, while actual runoff events were monitored at the other two sites. In all cases, concentrations of total suspended solids (TSS), copper, lead and zinc were effectively and reliably reduced, despite variations in inflow concentrations. Two biofiltration systems also effectively reduced phosphorus concentrations, however the third system discharged elevated phosphorus concentrations relative to inflow; this is attributed to p

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3

Choi, Hyeseon, Nash Jett DG Reyes, Minsu Jeon, and Lee-Hyung Kim. "Constructed Wetlands in South Korea: Current Status and Performance Assessment." Sustainability 13, no. 18 (2021): 10410. http://dx.doi.org/10.3390/su131810410.

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The efficiency of nature-based facilities is mostly evaluated in terms of their pollutant removal capabilities; however, apart from water purification functions, constructed wetlands also perform ecological, cultural, and environmental education functions. A multi-criteria performance index was developed in this study to evaluate the overall efficiency of constructed wetlands. A total of 54 constructed wetlands installed across South Korea were monitored to evaluate the pollutant removal performance of the facilities. A comparison between the conventional pollutant removal-based evaluation and

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Liu, Cheng-Wei, Shuo-Jun Mei, Di Liu, and Fu-Yun Zhao. "Convective dispersion of heat and airborne pollutants inside street canyons under the influence of urban ground heat flows." Indoor and Built Environment 28, no. 5 (2017): 619–35. http://dx.doi.org/10.1177/1420326x17706186.

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This paper reports a computational fluid dynamics simulation of airflow and species dispersion inside street canyons and building blocks simultaneously. Urban thermal boundary flows could cause a profound effect on the dispersion of pollutant scalars and ventilation performance of street canyons. Nominal pollutant concentration differences between the urban street canyon and the countryside fresh air could be determined by a consideration of wind profile and ground vegetation. This study models the interaction of the fluid flow, thermal and pollutant dispersions based on the Reynolds number (R

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Singh, Rajendra, Fei Zhao, Qian Ji, Jothivel Saravanan, and Dafang Fu. "Design and Performance Characterization of Roadside Bioretention Systems." Sustainability 11, no. 7 (2019): 2040. http://dx.doi.org/10.3390/su11072040.

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In the current study, three roadside bioretention systems with different configurations were constructed to investigate their pollutant removal efficiency in different rainfall recurrence intervals. The bioretention systems (referred as units) (unit A: 700 mm height material without submerged zone; unit B: 400 mm height material with 300 mm submerged zone; unit C: 400 mm height material without submerged zone) were used to conduct the rainfall events with uniform 120 min rainfall duration for 2-, 5-, 10-, 15-, and 30-year recurrence intervals. Results reveal that the gradual increase of rainfa

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Gui, P., R. Inamori, M. Matsumura, and Y. Inamori. "Evaluation of constructed wetlands by wastewater purification ability and greenhouse gas emissions." Water Science and Technology 56, no. 3 (2007): 49–55. http://dx.doi.org/10.2166/wst.2007.517.

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Domestic wastewater is a significant source of nitrogen and phosphorus, which cause lake eutrophication. Among the wastewater treatment technologies, constructed wetlands are a promising low-cost means of treating point and diffuse sources of domestic wastewater in rural areas. However, the sustainable operation of constructed wetland treatment systems depends upon a high rate conversion of organic and nitrogenous loading into their metabolic gaseous end products, such as N2O and CH4. In this study, we examined and compared the performance of three typical types of constructed wetlands: Free W

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Song, Xia, Nana Nyarko Mensah, Yuting Wen та ін. "β-Cyclodextrin-Polyacrylamide Hydrogel for Removal of Organic Micropollutants from Water". Molecules 26, № 16 (2021): 5031. http://dx.doi.org/10.3390/molecules26165031.

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Water pollution by various toxic substances remains a serious environmental problem, especially the occurrence of organic micropollutants including endocrine disruptors, pharmaceutical pollutants and naphthol pollutants. Adsorption process has been an effective method for pollutant removal in wastewater treatment. However, the thermal regeneration process for the most widely used activated carbon is costly and energy-consuming. Therefore, there has been an increasing need to develop alternative low-cost and effective adsorption materials for pollutant removal. Herein, β-cyclodextrin (β-CD), a

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Faucette, L. B., F. A. Cardoso-Gendreau, E. Codling, A. M. Sadeghi, Y. A. Pachepsky, and D. R. Shelton. "Storm Water Pollutant Removal Performance of Compost Filter Socks." Journal of Environmental Quality 38, no. 3 (2009): 1233–39. http://dx.doi.org/10.2134/jeq2008.0306.

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9

Li, Jin-Tao, Shao-Hui Zhang, and Yu-Mei Hua. "Performance of denitrifying microbial fuel cell subjected to variation in pH, COD concentration and external resistance." Water Science and Technology 68, no. 1 (2013): 250–56. http://dx.doi.org/10.2166/wst.2013.250.

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The effects of pH, chemical oxygen demand (COD) concentration and external resistance on denitrifying microbial fuel cell were evaluated in terms of electricity generation characteristics and pollutant removal performance. The results showed that anodic influent with weakly alkaline or neutral pH and cathodic influent with weakly acidic pH favored pollutant removal and electricity generation. The suitable influent pH of the anode and cathode were found to be 7.5–8.0 and 6.0–6.5, respectively. In the presence of sufficient nitrate in the cathode, higher influent COD concentration led to more el

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10

Tsuzuki, Yoshiaki. "Linking sanitation and wastewater treatment: from evaluation on the basis of effluent pollutant concentrations to evaluation on the basis of pollutant removal efficiencies." Water Science and Technology 65, no. 2 (2012): 368–79. http://dx.doi.org/10.2166/wst.2012.862.

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The evaluation of centralised wastewater treatment plants (WWTPs) in planning and management is sometimes based solely on effluent pollutant concentrations or pollutant loads. For sanitation purposes, the effluent pollutant concentrations/loads of WWTPs are important; of course, but from the point of view of wastewater treatment, the pollutant removal performance should also be evaluated. Focussing on low- and middle-income countries, especially those in tropical regions, published kinetics studies on biological WWTPs (such as oxidation ditches and aerated lagoons) are summarised in this paper

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11

Zamora-Castro, Sergio A., José Luis Marín-Muñiz, Luis Sandoval, Monserrat Vidal-Álvarez, and Juan Manuel Carrión-Delgado. "Effect of Ornamental Plants, Seasonality, and Filter Media Material in Fill-and-Drain Constructed Wetlands Treating Rural Community Wastewater." Sustainability 11, no. 8 (2019): 2350. http://dx.doi.org/10.3390/su11082350.

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The effects of Canna indica (P1), Pontederia sagittata (P2), and Spathiphyllum wallisii (P3) growing in different filter media materials (12 using porous river rock and 12 using tepezyl) on the seasonal removal of pollutants of wastewater using fill-and-drain constructed wetlands (FD-CWs) were investigated during 12 months. Three units of every media were planted with one plant of P1, P2, and P3, and three were kept unplanted. C. indica was the plant with higher growth than the other species, in both filter media. The species with more flower production were: C. indica > P. sagittate > S

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12

Bouziane Errahmani, Khelil, Ouassila Benhabiles, Sohbi Bellebia, Zohra Bengharez, Mattheus Goosen, and Hacene Mahmoudi. "Photocatalytic Nanocomposite Polymer-TiO2 Membranes for Pollutant Removal from Wastewater." Catalysts 11, no. 3 (2021): 402. http://dx.doi.org/10.3390/catal11030402.

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Photocatalytic TiO2-PVDF/PMMA nano-composites flat sheet membranes were fabricated by phase inversion and then employed in a crossflow filtration pilot to remove model pollutants of various sizes and charge from aqueous solution. The dope solution contained a mixture of PVDF and PMMA as polymers, polyethylene glycol (PEG) and polyvinylpyrrolidone (PVP) as additives, triethyl phosphate (TEP) as green solvent and TiO2 as immobilized photo catalyst. After undergoing characterization tests such as SEM morphology thickness, porosity, contact angle and water permeability, the membranes were used to

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13

Singhopon, Tippawan, Kenta Shinoda, Suphatchai Rujakom, and Futaba Kazama. "Factors Affecting the Simultaneous Removal of Nitrate and Reactive Black 5 Dye via Hydrogen-Based Denitrification." Water 13, no. 7 (2021): 922. http://dx.doi.org/10.3390/w13070922.

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Textile wastewater (TW) contains toxic pollutants that pose both environmental and human health risks. Reportedly, some of these pollutants, including NO3−, NO2− and reactive black 5 (RB-5) dye, can be removed via hydrogen-based denitrification (HD); however, it is still unclear how different factors affect their simultaneous removal. This study aimed to investigate the effect of H2 flow rate, the sparging cycle of air and H2, and initial dye concentration on the TW treatment process. Thus, two reactors, an anaerobic HD reactor and a combined aerobic/anaerobic HD reactor, were used to investig

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14

Zhao, Y. Q., G. Sun, C. Lafferty, and S. J. Allen. "Optimising the performance of a lab-scale tidal flow reed bed system treating agricultural wastewater." Water Science and Technology 50, no. 8 (2004): 65–72. http://dx.doi.org/10.2166/wst.2004.0490.

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A gravel-based tidal flow reed bed system was operated with three different strategies in order to investigate its optimal performance for the treatment of a high strength agricultural wastewater. According to the three strategies, individual reed beds were saturated and unsaturated with the wastewater for different periods while reasonably stable hydraulic and organic loadings were maintained. Experimental results demonstrated that the system produced the highest pollutant removal efficiencies with a relatively short saturated period and long unsaturated period, highlighting the importance of

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15

Ahn, Jaeyoon, Dongseop Lee, Shinin Han, Youngwook Jung, Sangwoo Park, and Hangseok Choi. "Experimental study on performance of sand filter layer to remove non-point source pollutants in rainwater." Water Supply 17, no. 6 (2017): 1748–63. http://dx.doi.org/10.2166/ws.2017.056.

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Abstract Clogging characteristics of conventional sand filter layers with different grain-size distributions were experimentally studied to estimate their filtration capacity to capture non-point source pollutants in an artificial rainwater reservoir. A series of laboratory-scale chamber tests was conducted for artificial urban runoff synthesized with non-point source pollutants collected from a real road in Seoul, Korea. In addition, an analytical filtration model for estimating removal of non-point source pollutants was adopted considering the clogging characteristics. To evaluate the perfor

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16

Yang, Feikai, Dafang Fu, Shuang Liu, Chris Zevenbergen, and Rajendra Prasad Singh. "Hydrologic and Pollutant Removal Performance of Media Layers in Bioretention." Water 12, no. 3 (2020): 921. http://dx.doi.org/10.3390/w12030921.

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The current study was aimed to investigate the filler layer structure in modified bioretention systems. Three different structural layers in bioretention were proposed to evaluate their hydrologic performance and pollutant removal efficiency under different rainfall intensities. These layers were as follows: all three layers (filter, transition, and drainage layers), without transition layer, and without drainage layer. Synthetic stormwater was used for experimental purpose in current work. Results revealed that compared with “all three layers”, runoff control rate of “without transition layer

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17

Kim, Hyun Ha, Graciela Prieto, Kazunori Takashima, Shinji Katsura, and Akira Mizuno. "Performance evaluation of discharge plasma process for gaseous pollutant removal." Journal of Electrostatics 55, no. 1 (2002): 25–41. http://dx.doi.org/10.1016/s0304-3886(01)00182-6.

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18

Shahid, Munazzam Jawad, Ameena A. AL-surhanee, Fayza Kouadri, et al. "Role of Microorganisms in the Remediation of Wastewater in Floating Treatment Wetlands: A Review." Sustainability 12, no. 14 (2020): 5559. http://dx.doi.org/10.3390/su12145559.

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This article provides useful information for understanding the specific role of microbes in the pollutant removal process in floating treatment wetlands (FTWs). The current literature is collected and organized to provide an insight into the specific role of microbes toward plants and pollutants. Several aspects are discussed, such as important components of FTWs, common bacterial species, rhizospheric and endophytes bacteria, and their specific role in the pollutant removal process. The roots of plants release oxygen and exudates, which act as a substrate for microbial growth. The bacteria at

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19

Miranda, Suymara Toledo, Antonio Teixeira de Matos, Mateus Pimentel Matos, and Claudéty Saraiva. "Efficiency of horizontal subsurface flow-constructed wetlands considering different support materials and the cultivation positions of plant species." Ambiente e Agua - An Interdisciplinary Journal of Applied Science 15, no. 2 (2020): 1. http://dx.doi.org/10.4136/ambi-agua.2476.

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The present work evaluated the influence of filling substrate material (crushed PET bottles or fine gravel) on the efficiency of pollutant removal in horizontal subsurface flow constructed wetlands (HSSF-CWs). They were cultivated with a consortium of elephant grass cv. Napier (Pennisetum purpureum Schum) and Tifton 85 (Cynodon spp.) to treat wastewater from a common milk cooling tank (WWMT). For this, six HSSF-CWs were used which had dimensions of 0.6 m tall x 1.0 m wide x 2.5 m long. In order to investigate possible efficiency loss in the removal of pollutants from the system, operation was

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20

Lim, Yu Jie, So Min Lee, Rong Wang, and Jaewoo Lee. "Emerging Materials to Prepare Mixed Matrix Membranes for Pollutant Removal in Water." Membranes 11, no. 7 (2021): 508. http://dx.doi.org/10.3390/membranes11070508.

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Various pollutants of different sizes are directly (e.g., water-borne diseases) and indirectly (e.g., accumulation via trophic transfer) threatening our water health and safety. To cope with this matter, multifaceted approaches are required for advanced wastewater treatment more efficiently. Wastewater treatment using mixed matrix membranes (MMMs) could provide an excellent alternative since it could play two roles in pollutant removal by covering adsorption and size exclusion of water contaminants simultaneously. This paper provides an overview of the research progresses and trends on the eme

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21

Hermawan, Andreas Aditya, Da Yoon Jung, and Amin Talei. "Removal Process of Nutrients and Heavy Metals in Tropical Biofilters." E3S Web of Conferences 65 (2018): 05026. http://dx.doi.org/10.1051/e3sconf/20186505026.

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Biofilters are relatively new pollution control technology used to treat urban stormwater runoffs. Biofilters generally consist of vegetated top soil layer for nutrient uptake and sand-based filter media for heavy metals filtration. While the complex process of pollutant removal is studied for a temperate environment, only a few studies have been conducted under tropical climate conditions. This study aims to study the removal process of total nitrogen, total phosphorus and 6 heavy metals including copper, iron, manganese, nickel, lead, and zinc in a tropical biofiltration system. In this stud

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22

Peng, Kang, and Huaming Yang. "Carbon hybridized montmorillonite nanosheets: preparation, structural evolution and enhanced adsorption performance." Chemical Communications 53, no. 45 (2017): 6085–88. http://dx.doi.org/10.1039/c7cc02334k.

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Maniquiz, Marla C., Jiyeon Choi, Soyoung Lee, and Lee-Hyung Kim. "Performance comparison between infiltration and non-infiltration type of structural stormwater treatment systems." Water Science and Technology 66, no. 2 (2012): 363–69. http://dx.doi.org/10.2166/wst.2012.197.

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The study was constructed to monitor representative inflow and outflow from infiltration and non-infiltration type best management practice (BMP) sites developed at a university campus, allowing the determination of overall performance efficiency in terms of runoff reduction and pollutant removal. Based on the monitored storm events, the runoff and discharged volume and flow rates exhibited high positive correlations with total rainfall depth (p&lt;0.001). Findings revealed that as the total rainfall increases, the amount of volume reduction and pollutant removal decreases for both types o

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Mao, Xufeng, Donghai Yuan, Liansheng He, et al. "How Long, Narrowly Constructed Wetlands Purify Irrigation Return Water: A Case Study of Ulansuhai Lake, China." Advances in Meteorology 2015 (2015): 1–6. http://dx.doi.org/10.1155/2015/142036.

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The use of constructed wetlands (CWs) in the treatment of raw wastewater in China has proved to be very successful in recent decades. However, it is not known whether surface-flow constructed wetlands can effectively purify irrigation return water. To investigate the performance of a constructed wetland in terms of meeting the goals of pollutant purification, the 8th drainage of Ulansuhai Lake was used for this study. Pollutant removal performances, as well as hydrological characteristic variations in relation to specific characteristics of plants, were investigated utilizing two years of mont

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Hatt, Belinda E., Tim D. Fletcher, and Ana Deletic. "Hydraulic and Pollutant Removal Performance of Fine Media Stormwater Filtration Systems." Environmental Science & Technology 42, no. 7 (2008): 2535–41. http://dx.doi.org/10.1021/es071264p.

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He, Xu, Robert Büchel, Renato Figi, et al. "High-performance carbon/MnO2 micromotors and their applications for pollutant removal." Chemosphere 219 (March 2019): 427–35. http://dx.doi.org/10.1016/j.chemosphere.2018.12.051.

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Yu, Zhiji, Huihui Gan, Ming Xiao, et al. "Performance of permeable pavement systems on stormwater permeability and pollutant removal." Environmental Science and Pollution Research 28, no. 22 (2021): 28571–84. http://dx.doi.org/10.1007/s11356-021-12525-5.

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Guerrero, Javier, Ahmed Mahmoud, Taufiqul Alam, et al. "Water Quality Improvement and Pollutant Removal by Two Regional Detention Facilities with Constructed Wetlands in South Texas." Sustainability 12, no. 7 (2020): 2844. http://dx.doi.org/10.3390/su12072844.

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Stormwater runoff introduces several pollutants to the receiving water bodies that may cause degradation of the water quality. Stormwater management systems such as detention facilities and wetland can improve the water quality by removing various pollutants associated with the runoff. The objective of this research project is to determine the performance and efficiency of two major regional detention facilities (RDFs) with different designs and structures in reducing pollutants based on various storm events in McAllen, Texas. The two sites are the McAuliffe RDF and the Morris RDF; each site w

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Arvin, E., and P. Harremoës. "Concepts and Models for Biofilm Reactor Performance." Water Science and Technology 22, no. 1-2 (1990): 171–92. http://dx.doi.org/10.2166/wst.1990.0145.

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This paper reviews the state of knowledge of the basic mechanisms governing transformation of pollutants and the present approaches with which to predict the performance of biofilm reactors. The design of biofilm reactors is based mainly on empirical loading criteria or empirical design formulae. Introduction of more stringent effluent requirements, new types of biofilm reactors, as well as application of biofilm reactors to more untraditional types of waste materials, calls for new design procedures with higher degrees of confidence. Most new attempts to model biofilm reactors are based on fu

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Zhang, Yuanyuan, Jiaobo Shang, Yanqun Song, et al. "Selective Fenton-like oxidation of methylene blue on modified Fe-zeolites prepared via molecular imprinting technique." Water Science and Technology 75, no. 3 (2016): 659–69. http://dx.doi.org/10.2166/wst.2016.525.

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A facile strategy to increase the selectivity of heterogeneous Fenton oxidation is investigated. The increase was reached by increasing selective adsorption of heterogeneous Fenton catalyst to a target pollutant. The heterogeneous Fenton catalyst was prepared by a two-step process. First, zeolite particles were imprinted by the target pollutant, methylene blue (MB), in their aggregations, and second, iron ions were loaded on the zeolite aggregations to form the molecule imprinted Fe-zeolites (MI-FZ) Fenton catalyst. Its adsorption amount for MB reached as high as 44.6 mg g−1 while the adsorpti

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Hatt, B. E., N. Siriwardene, A. Deletic, and T. D. Fletcher. "Filter media for stormwater treatment and recycling: the influence of hydraulic properties of flow on pollutant removal." Water Science and Technology 54, no. 6-7 (2006): 263–71. http://dx.doi.org/10.2166/wst.2006.626.

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Improved urban water management in Australia is of national importance. Water resources are stretched and urban runoff is a recognized leading cause of degradation of urban waterways. Stormwater recycling is an option that can contribute to easing these problems. Biofilters are effective structural stormwater pollution control measures with the potential for integration into stormwater treatment and recycling systems. However, premature clogging of biofilters is a major problem, with resulting decreased infiltration capacity (and hence the volume of stormwater the system can detain) and increa

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Awad, Saad Naif, and Basim Hussein Khudair Al-Obaidi. "Performance Evaluation of Trickling Filter and Extended Aeration of Wastewater Treatment Plants." Journal of Engineering 26, no. 3 (2020): 93–99. http://dx.doi.org/10.31026/j.eng.2020.03.08.

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In recent decades, there has been increasing interest in wastewater treatment because of its direct impact on the environment and public health. Over time, other forms of treatment have been developed and modified, including extended aeration. This process is included in the suspended growth system. In this paper, a comparative study was conducted between the efficiency of the extended aeration plant and that of the trickling filter plant in removal of BOD and COD. The method of comparison was done by knowing the value of the pollutant before and after the treatment and then extract the remova

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Maniquiz, M. C., S. Y. Lee, J. Y. Choi, S. M. Jeong, and L. H. Kim. "Treatment performance of a constructed wetland during storm and non-storm events in Korea." Water Science and Technology 65, no. 1 (2012): 119–26. http://dx.doi.org/10.2166/wst.2011.843.

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The efficiency of a free water surface flow constructed wetland (CW) in treating agricultural discharges from stream was investigated during storm and non-storm events between April and December, 2009. Physico-chemical and water quality constituents were monitored at five sampling locations along the flow path of the CW. The greatest reduction in pollutant concentration was observed after passing the sedimentation zone at approximately 4% fractional distance from the inflow. The inflow hydraulic loading, flow rates and pollutant concentrations were significantly higher and variable during stor

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Behmaneshfar, Ali, Abdolhossein Sadrnia, and Hassan Karimi-Maleh. "A Review of Different Types of DOE Methods as a Useful Platform for Improving the Performance of Nano Adsorbents in Removal Systems of Pollutants." Nanoscience & Nanotechnology-Asia 10, no. 3 (2020): 219–27. http://dx.doi.org/10.2174/2210681209666190220130002.

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Background: In recent years, the Design of Experiments (DOE) is used for removing pollutant from wastewater by nano-adsorbent. Some methods are Taguchi, Response Surface Methodology (RSM) and factorial design. The aim of this paper is to review different used methods of DOE in removing pollutant to suggest some notations to scholars. Methods: The reviewed papers were searched in Google Scholar, Scopus, and Web of Science randomly and categorized based on DOE methods. Results: Number of factors and responses in DOE for removing pollutants from wastewater are between 2-6 and 1-4, respectively. T

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Liu, Yang, Song Wang, Yong Liang, et al. "Simultaneous removal of methyl orange and Cr(VI) using polyethyleneimine-modified corncob-derived carbon material." BioResources 15, no. 4 (2020): 7342–56. http://dx.doi.org/10.15376/biores.15.4.7342-7356.

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Polyethyleneimine (PEI) modified corncob-derived carbon material (CCM) was prepared by the simple wet-impregnation technique. Field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDS), Fourier-transform infrared spectroscopy (FT-IR), and nitrogen isothermal adsorption/desorption measurements were used to compare the structural differences between the CCM and the PEI-modified CCM (PEI-CCM). In the single-pollutant removal experiment, the PEI-CCM showed high adsorption capacities for methyl orange (MO) and Cr(VI). However, the CCM only showed high adsorption

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Zhang, Huining, Xin Yuan, Hanqing Wang, Shuoqi Ma, and Bixiao Ji. "Performance and Microbial Community of Different Biofilm Membrane Bioreactors Treating Antibiotic-Containing Synthetic Mariculture Wastewater." Membranes 10, no. 10 (2020): 282. http://dx.doi.org/10.3390/membranes10100282.

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The performance of pollutant removals, tetracycline (TC) and norfloxacin (NOR) removals, membrane fouling mitigation and the microbial community of three Anoxic/Oxic membrane bioreactors (AO-MBRs), including a moving bed biofilm MBR (MBRa), a fixed biofilm MBR (MBRb) and an AO-MBR (MBRc) for control, were compared in treating antibiotic-containing synthetic mariculture wastewater. The results showed that MBRb had the best effect on antibiotic removal and membrane fouling mitigation compared to the other two bioreactors. The maximum removal rate of TC reached 91.65% and the maximum removal rate

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Ahmad Puat, Nur Nasuha, and Hamidi Abdul Aziz. "Biological Treatment of Poultry Slaughterhouse Wastewater by Using Different Fibers." Applied Mechanics and Materials 802 (October 2015): 401–5. http://dx.doi.org/10.4028/www.scientific.net/amm.802.401.

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This study evaluated the performance of sequencing batch reactor (SBR) with and without the fibers of poultry slaughterhouse wastewater (PSWW). The fibers act as attachment materials to the suspended solids, which are considered as pollutant in PSWW. PSWW contains high-pollutant concentrations. Experiments were conducted using two 60 L laboratory SBR reactors at room temperature (25 °C) and pH 7±0.5. The removal percentage of SBR with and without the fibers was compared in terms of chemical oxygen demand and biological oxygen demand. The removal percentage of SBR with fibers showed higher over

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Wang, Congcong, Wei Wang, Jian Wang, et al. "Effective removal of aromatic pollutants via adsorption and photocatalysis of porous organic frameworks." RSC Advances 10, no. 53 (2020): 32016–19. http://dx.doi.org/10.1039/d0ra05724j.

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Yu, Wen Jie, Yang Cheng, Tao Zou, Yi Liu, Kui Wu, and Na Peng. "Preparation of BiPO4-Polyaniline Hybrid and its Enhanced Photocatalytic Performance." Nano 13, no. 01 (2018): 1850009. http://dx.doi.org/10.1142/s1793292018500091.

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Recently, BiPO4has been proved to be an efficient photocatalyst which exhibits more attractive activity than that of TiO2-P25 under UV irradiation. However, photocatalytic oxidation-reduction ability of BiPO4under visible light still needs to be improved. Conjugated polymer just like polyaniline was demonstrated to be a new and efficient visible co-photocatalyst in the field of pollutant governance. As far as we know, the attempt to enhance the photochemical ability of BiPO4by employing polyaniline as a co-photocatalyst is still very limited. Hence, in order to testify the potential enhanced p

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Pastore, Martina, and Eleonora Sforza. "Exploiting symbiotic interactions between Chlorella protothecoides and Brevundimonas diminuta for an efficient single-step urban wastewater treatment." Water Science and Technology 78, no. 1 (2018): 216–24. http://dx.doi.org/10.2166/wst.2018.155.

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Abstract The application of microalgal bacteria consortia to the treatment of wastewater is receiving increasing attention, meeting the demand for new green and efficient technologies for water remediation. The specificity of the consortium, however, may strongly affect the performance of the treatment. In fact, even though a general exploitation of the O2/CO2 exchange between microalgae and bacteria is effective, some specific interactions may increase the pollutant removal. With this aim, the co-cultivation of Chlorella protothecoides and Brevundimonas diminuta was tested, with particular at

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Shen, Changming, Dianhai Yang, and Bingzhi Dong. "A new operation mode solving clogging problems of horizontal subsurface constructed wetlands." Water Science and Technology 62, no. 5 (2010): 1045–51. http://dx.doi.org/10.2166/wst.2010.327.

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Horizontal subsurface constructed wetland (SSFCW) has been widely used to treat wastewater, however the capacity of SSFCW is severely confined by clogging problems which are very common during the lifespan of a SSFCW. Therefore it is of great practical significance to improve the performance of SSFCW. In this study, a new operation mode by changing the flow direction periodically was executed and the performance on the pollutants removal was studied. Three years' experimental results showed that the SSFCW with new operation mode achieved better pollutant removal efficiency compared with the pe

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Gao, Yulan, Jie Yang, Xinwei Song, et al. "An experimental study on the use of a sequencing-batch membrane bioreactor (SBMBR) for the treatment of mixed municipal wastewater." Water Science and Technology 83, no. 6 (2021): 1459–69. http://dx.doi.org/10.2166/wst.2021.064.

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Abstract Several water treatment techniques have been combined using the sequencing batch reactor with the membrane bioreactor for addressing water pollution. However, cleaning of the membrane is dependent on the approach involved as well as the operating conditions. In the present study, the sequencing-batch membrane bioreactor was used to treat real mixed municipal wastewater. The pollutant removal and membrane filtration performances were examined. The results show that the average removal rates of chemical oxygen demand (COD), total nitrogen, NH3-N, total phosphorus, and turbidity were 90.

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Kaldis, Sotiris, Savas Topis, and Dimitris Koutsonikolas. "Gas pollutant cleaning by a membrane reactor." Thermal Science 10, no. 3 (2006): 143–49. http://dx.doi.org/10.2298/tsci0603143s.

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An alternative technology for the removal of gas pollutants at the integrated gasification combined cycle process for power generation is the use of a catalytic membrane reactor. In the present study, ammonia decomposition in a catalytic reactor, with a simultaneous removal of hydrogen through a ceramic membrane, was investigated. A Ni/Al2O3 catalyst was prepared by the dry and wet impregnation method and characterized by the inductively coupled plasma method, scanning electron microscopy, X-ray diffraction, and N2 adsorption before and after activation. Commercially available a-Al2O3 membrane

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Ng, Yin Sim, and Derek Juinn Chieh Chan. "The role and effectiveness of monoculture and polyculture phytoremediation systems in fish farm wastewater." RSC Advances 11, no. 23 (2021): 13853–66. http://dx.doi.org/10.1039/d1ra00160d.

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Monoculture outperformed polyculture in terms of phytoremediation capabilities, indicating the importance of macrophyte selection. The species-wise pollutant removal abilities and their proportional densities dictate the treatment performance.

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Vrinceanu, Narcisa, Raluca Maria Hlihor, Andrei Ionut Simion, et al. "New Evidence of the Enhanced Elimination of a Persistent Drug Used as a Lipid Absorption Inhibitor by Advanced Oxidation with UV-A and Nanosized Catalysts." Catalysts 9, no. 9 (2019): 761. http://dx.doi.org/10.3390/catal9090761.

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This work demonstrates new evidence of the efficient destruction and mineralization of an emergent organic pollutant using UV-A and titanium nanosized catalysts. The target compound considered in this work is the primary metabolite of a lipid regulator drug, clofibrate, identified in many studies as refractory during conventional wastewater treatment. The photocatalytic performance study was carried out in batch mode at laboratory scale, in aqueous suspension. Kinetic data showed that titanium dioxide P25 Aeroxide® exhibits the highest photocatalytic efficiency compared to the other investigat

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Perez-Mercado, Luis, Cecilia Lalander, Christina Berger, and Sahar Dalahmeh. "Potential of Biochar Filters for Onsite Wastewater Treatment: Effects of Biochar Type, Physical Properties and Operating Conditions." Water 10, no. 12 (2018): 1835. http://dx.doi.org/10.3390/w10121835.

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The potential of biochar as a filter medium for onsite wastewater treatment was investigated in five sub-studies. Sub-study 1 compared pollutant removal from wastewater using pine-spruce biochar, willow biochar and activated biochar (undefined biomass) filters. Sub-study 2 investigated the effects of particle size (0.7, 1.4 and 2.8 mm) on pollutant removal using pine-spruce biochar filters. In sub-studies 3 and 4, the effects of the hydraulic loading rate (HLR; 32–200 L m−2) and organic loading rates (OLR; 5–20 g biochemical oxygen demand (BOD5) m−2) on pollutant removal using pine-spruce bioc

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Wang, Zongyu, Hailang Kuang, Jifeng Zhang, Lilin Chu, and Yulong Ji. "Experimental Study on the Removal of Real Exhaust Pollutants from a Diesel Engine by Activated Carbon." Applied Sciences 9, no. 15 (2019): 3175. http://dx.doi.org/10.3390/app9153175.

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So far, most of the experimental researchers studying the removal of diesel exhaust pollutants have done so with simulated exhaust gas, which cannot demonstrate the ability of catalysts accurately. Because activated carbon (AC) has low price, no secondary pollution, good adsorption performance, and certain catalytic activity, it has good application prospects in the field of marine exhaust pollutant removal. In this paper, the removal of particulate matter (PM), carbon monoxide (CO), and NOx from real exhaust gas by AC was studied. The results show that PM removal efficiency reached up to 77%,

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Huo, Huiwen, Xinjiang Hu, Hui Wang, et al. "Synergy of Photocatalysis and Adsorption for Simultaneous Removal of Hexavalent Chromium and Methylene Blue by g-C3N4/BiFeO3/Carbon Nanotubes Ternary Composites." International Journal of Environmental Research and Public Health 16, no. 17 (2019): 3219. http://dx.doi.org/10.3390/ijerph16173219.

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A novel graphite-phase carbon nitride (g-C3N4)/bismuth ferrite (BiFeO3)/carbon nanotubes (CNTs) ternary magnetic composite (CNBT) was prepared by a hydrothermal synthesis. Using this material, Cr(VI) and methylene blue (MB) were removed from wastewater through synergistic adsorption and photocatalysis. The effects of pH, time, and pollutant concentration on the photocatalytic performance of CNBT, as well as possible interactions between Cr(VI) and MB species were analyzed. The obtained results showed that CNTs could effectively reduce the recombination rate of electron-hole pairs during the ph

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Xie, Bing, Bao Yi Lv, Chong Hu, Shao Bo Liang, Yuan Tang, and Jun Lu. "Landfill leachate pollutant removal performance of a novel biofilter packed with mixture medium." Bioresource Technology 101, no. 20 (2010): 7754–60. http://dx.doi.org/10.1016/j.biortech.2010.04.103.

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Hatt, Belinda E., Tim D. Fletcher, and Ana Deletic. "Hydrologic and pollutant removal performance of stormwater biofiltration systems at the field scale." Journal of Hydrology 365, no. 3-4 (2009): 310–21. http://dx.doi.org/10.1016/j.jhydrol.2008.12.001.

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