Pub Date : 2020-01-01DOI: 10.12989/MWT.2020.11.5.323
Z. Ng, C. Chong, Muhammad Hamdan Sunarya, W. Lau, Y. Liang, See Yin Fong, A. Ismail
{"title":"Reuse potential of spent RO membrane for NF and UF process","authors":"Z. Ng, C. Chong, Muhammad Hamdan Sunarya, W. Lau, Y. Liang, See Yin Fong, A. Ismail","doi":"10.12989/MWT.2020.11.5.323","DOIUrl":"https://doi.org/10.12989/MWT.2020.11.5.323","url":null,"abstract":"","PeriodicalId":18416,"journal":{"name":"Membrane Water Treatment","volume":"11 1","pages":"323-331"},"PeriodicalIF":1.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66495215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.12989/MWT.2020.11.3.179
Yong-Min Park, Suyoung Choi, K. Park, J. Kweon
{"title":"Electrodialysis of metal plating wastewater with neutralization pretreatment: Separation efficiency and organic removal","authors":"Yong-Min Park, Suyoung Choi, K. Park, J. Kweon","doi":"10.12989/MWT.2020.11.3.179","DOIUrl":"https://doi.org/10.12989/MWT.2020.11.3.179","url":null,"abstract":"","PeriodicalId":18416,"journal":{"name":"Membrane Water Treatment","volume":"11 1","pages":"179-187"},"PeriodicalIF":1.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66494622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.12989/MWT.2020.11.3.207
Y. Sihn, I. Yoon
{"title":"Aqueous U(VI) removal by green rust and vivianite at phosphate-rich environment","authors":"Y. Sihn, I. Yoon","doi":"10.12989/MWT.2020.11.3.207","DOIUrl":"https://doi.org/10.12989/MWT.2020.11.3.207","url":null,"abstract":"","PeriodicalId":18416,"journal":{"name":"Membrane Water Treatment","volume":"11 1","pages":"207-215"},"PeriodicalIF":1.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66494430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.12989/MWT.2020.11.2.167
J. Tabatabaei, L. Gorji
{"title":"Study of nitrate concentration in Najaf Abad aquifer using GIS","authors":"J. Tabatabaei, L. Gorji","doi":"10.12989/MWT.2020.11.2.167","DOIUrl":"https://doi.org/10.12989/MWT.2020.11.2.167","url":null,"abstract":"","PeriodicalId":18416,"journal":{"name":"Membrane Water Treatment","volume":"11 1","pages":"167-172"},"PeriodicalIF":1.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66494550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.12989/MWT.2020.11.3.201
E. Oh, J. Kim, Junhee Ryu, K. Min, Hyun-Gon Shin, K. Park
{"title":"Influence of counter anions on metal separation and water transport in electrodialysis treating plating wastewater","authors":"E. Oh, J. Kim, Junhee Ryu, K. Min, Hyun-Gon Shin, K. Park","doi":"10.12989/MWT.2020.11.3.201","DOIUrl":"https://doi.org/10.12989/MWT.2020.11.3.201","url":null,"abstract":"","PeriodicalId":18416,"journal":{"name":"Membrane Water Treatment","volume":"11 1","pages":"201-206"},"PeriodicalIF":1.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66494812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.12989/MWT.2020.11.1.011
Mark Xavier Bailon, Min-oh Park, Younggyun Choi, D. Reible, Yongseok Hong
The effectiveness of in situ sediment capping as a technique for heavy metal risk mitigation in Hyeongsan River estuary, South Korea was studied. Sites in the estuary were found previously to show moderate to high levels of contamination of mercury, methylmercury and other heavy metals. A 400 m x 50 m section of the river was selected for a thin layer capping demonstration, where the total area was divided into 4 sections capped with different combinations of capping materials (zeolite, AC/zeolite, AC/sand, zeolite/sand). Pore water concentrations in the different sites were studied using diffusive gradient in thin film (DGT) probes. All capping amendments showed reduction in the pore water concentration of the different heavy metals with top 5 cm showing %reduction greater than 90% for some heavy metals. The relative maxima for the different metals were found to be translated to lower depths with addition of the caps. For two-layered cap with AC, order of placement should be considered since AC can easily be displaced due to its relatively low density. Investigation of methylmercury (MeHg) in the site showed that MeHg and %MeHg in pore water corresponds well with maxima for sulfide, Fe and Mn suggesting mercury methylation as probably coupled with sulfate, Fe and Mn reduction in sediments. Our results showed that thin-layer capping of active sorbents AC and zeolite, in combination with passive sand caps, are potential remediation strategy for sediments contaminated with heavy metals.
{"title":"The application of DGTs for assessing the effectiveness of in situ management of Hg and heavy metal contaminated sediment","authors":"Mark Xavier Bailon, Min-oh Park, Younggyun Choi, D. Reible, Yongseok Hong","doi":"10.12989/MWT.2020.11.1.011","DOIUrl":"https://doi.org/10.12989/MWT.2020.11.1.011","url":null,"abstract":"The effectiveness of in situ sediment capping as a technique for heavy metal risk mitigation in Hyeongsan River estuary, South Korea was studied. Sites in the estuary were found previously to show moderate to high levels of contamination of mercury, methylmercury and other heavy metals. A 400 m x 50 m section of the river was selected for a thin layer capping demonstration, where the total area was divided into 4 sections capped with different combinations of capping materials (zeolite, AC/zeolite, AC/sand, zeolite/sand). Pore water concentrations in the different sites were studied using diffusive gradient in thin film (DGT) probes. All capping amendments showed reduction in the pore water concentration of the different heavy metals with top 5 cm showing %reduction greater than 90% for some heavy metals. The relative maxima for the different metals were found to be translated to lower depths with addition of the caps. For two-layered cap with AC, order of placement should be considered since AC can easily be displaced due to its relatively low density. Investigation of methylmercury (MeHg) in the site showed that MeHg and %MeHg in pore water corresponds well with maxima for sulfide, Fe and Mn suggesting mercury methylation as probably coupled with sulfate, Fe and Mn reduction in sediments. Our results showed that thin-layer capping of active sorbents AC and zeolite, in combination with passive sand caps, are potential remediation strategy for sediments contaminated with heavy metals.","PeriodicalId":18416,"journal":{"name":"Membrane Water Treatment","volume":"11 1","pages":"11-23"},"PeriodicalIF":1.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66493483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.12989/MWT.2020.11.1.041
Hana Jang, N. Park, Hyokwan Bae
Lead is a highly toxic heavy metal that causes serious health problems. Nonetheless, it is increasingly being used for industrial applications and is often discharged into the environment without adequate purification. In this study, Pb(II) was removed by powdered waste sludge (PWS) based on the biosorption mechanism. Different PWSs were collected from a submerged moving media intermittent aeration reactor (SMMIAR) and modified Ludzack-Ettinger (MLE) processes. The contents of extracellular polymeric substances were similar, but the surface area of MLE-PWS (2.07 m2/g) was higher than that of SMMIAR-PWS (0.82 m2/g); this is expected to be the main parameter determining Pb(II) biosorption capacity. The Bacillaceae family was dominant in both PWSs and may serve as the major responsible bacterial group for Pb(II) biosorption. Pb(II) biosorption using PWS was evaluated for reaction time, salinity effect, and isotherm equilibrium. For all experiments, MLE-PWS showed higher removal efficiency. At a fixed initial Pb(II) concentration of 20 mg/L and a reaction time of 180 minutes, the biosorption capacities (qe) for SMMIAR- and MLE-PWSs were 2.86 and 3.07 mg/g, respectively. Pb(II) biosorption using PWS was rapid; over 80% of the maximum biosorption capacity was achieved within 10 minutes. Interestingly, MLE-PWS showed enhanced Pb(II) biosorption with salinity values of up to 30 g NaCl/L. Linear regression of the Freundlich isotherm revealed high regression coefficients (R2 > 0.968). The fundamental Pb(II) biosorption capacity, represented by the KF value, was consistently higher for MLE-PWS than SMMIAR-PWS.
{"title":"Removal of Pb(II) from wastewater by biosorptionusing powdered waste sludge","authors":"Hana Jang, N. Park, Hyokwan Bae","doi":"10.12989/MWT.2020.11.1.041","DOIUrl":"https://doi.org/10.12989/MWT.2020.11.1.041","url":null,"abstract":"Lead is a highly toxic heavy metal that causes serious health problems. Nonetheless, it is increasingly being used for industrial applications and is often discharged into the environment without adequate purification. In this study, Pb(II) was removed by powdered waste sludge (PWS) based on the biosorption mechanism. Different PWSs were collected from a submerged moving media intermittent aeration reactor (SMMIAR) and modified Ludzack-Ettinger (MLE) processes. The contents of extracellular polymeric substances were similar, but the surface area of MLE-PWS (2.07 m2/g) was higher than that of SMMIAR-PWS (0.82 m2/g); this is expected to be the main parameter determining Pb(II) biosorption capacity. The Bacillaceae family was dominant in both PWSs and may serve as the major responsible bacterial group for Pb(II) biosorption. Pb(II) biosorption using PWS was evaluated for reaction time, salinity effect, and isotherm equilibrium. For all experiments, MLE-PWS showed higher removal efficiency. At a fixed initial Pb(II) concentration of 20 mg/L and a reaction time of 180 minutes, the biosorption capacities (qe) for SMMIAR- and MLE-PWSs were 2.86 and 3.07 mg/g, respectively. Pb(II) biosorption using PWS was rapid; over 80% of the maximum biosorption capacity was achieved within 10 minutes. Interestingly, MLE-PWS showed enhanced Pb(II) biosorption with salinity values of up to 30 g NaCl/L. Linear regression of the Freundlich isotherm revealed high regression coefficients (R2 > 0.968). The fundamental Pb(II) biosorption capacity, represented by the KF value, was consistently higher for MLE-PWS than SMMIAR-PWS.","PeriodicalId":18416,"journal":{"name":"Membrane Water Treatment","volume":"11 1","pages":"41"},"PeriodicalIF":1.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66493943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.12989/MWT.2020.11.1.049
H. Bae
The effect of Combined Sewer Overflow on the river system was investigated throughout three preliminary field tests and three main ones. As a result of the study, Combined Sewer Overflow did not affect water qualities on the main stream since the concentration of the main stream did not significantly changed during rainfall events although the water quality of tributaries has rapidly deteriorated due to the influence of the Combined Sewer Overflow during rainfall events. The main cause of the result is that the flow rate of the tributaries is considerably lower than that of the main stream, so that the tributaries with deteriorated water quality during rainfall events did not significantly affect the quality of the actual main stream. Therefore, the water quality of the Kumho River is more affected by the wastewater treatment facilities that discharges water continuously to the main stream than pollutants from non-point pollution sources during rainfall events. As a result, managements for discharges from wastewater treatment facilities should be strengthened in order to improve the water quality of the river.
{"title":"The effect of Combined Sewer Overflows on river","authors":"H. Bae","doi":"10.12989/MWT.2020.11.1.049","DOIUrl":"https://doi.org/10.12989/MWT.2020.11.1.049","url":null,"abstract":"The effect of Combined Sewer Overflow on the river system was investigated throughout three preliminary field tests and three main ones. As a result of the study, Combined Sewer Overflow did not affect water qualities on the main stream since the concentration of the main stream did not significantly changed during rainfall events although the water quality of tributaries has rapidly deteriorated due to the influence of the Combined Sewer Overflow during rainfall events. The main cause of the result is that the flow rate of the tributaries is considerably lower than that of the main stream, so that the tributaries with deteriorated water quality during rainfall events did not significantly affect the quality of the actual main stream. Therefore, the water quality of the Kumho River is more affected by the wastewater treatment facilities that discharges water continuously to the main stream than pollutants from non-point pollution sources during rainfall events. As a result, managements for discharges from wastewater treatment facilities should be strengthened in order to improve the water quality of the river.","PeriodicalId":18416,"journal":{"name":"Membrane Water Treatment","volume":"48 1","pages":"49"},"PeriodicalIF":1.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66494016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.12989/MWT.2020.11.2.151
Sanjrani Manzoor Ahmed, Boxun Zhou, Heng Zhao, Y. Zheng, Yue Wang, S. Xia
{"title":"Preparation, characterization of activated carbon fiber from luffa and its application in CVFCW for rainwater treatment","authors":"Sanjrani Manzoor Ahmed, Boxun Zhou, Heng Zhao, Y. Zheng, Yue Wang, S. Xia","doi":"10.12989/MWT.2020.11.2.151","DOIUrl":"https://doi.org/10.12989/MWT.2020.11.2.151","url":null,"abstract":"","PeriodicalId":18416,"journal":{"name":"Membrane Water Treatment","volume":"11 1","pages":"151-158"},"PeriodicalIF":1.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66494455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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