Membrane Water Treatment最新文献_第4页

Numerical study of desalination by Sweeping Gas Membrane Distillation 扫气膜蒸馏脱盐的数值研究

IF 1 4区工程技术

Membrane Water Treatment Pub Date : 2020-09-01 DOI: 10.12989/MWT.2020.11.5.353

Nizar Loussif, J. Orfi

引用次数: 1

The control of point and non-point source nitrogen to prevent eutrophication of the Nakdong River basin, Korea 控制点源和非点源氮防止洛东江流域富营养化

IF 1 4区工程技术

Membrane Water Treatment Pub Date : 2020-09-01 DOI: 10.12989/MWT.2020.11.5.345

S. Kwak, Z. Yun

引用次数: 0

Preparation, Characterization of activated carbon fiber (ACF) from loofah and its application in composite vertical flow constructed wetlands for Tetracycline removal from water 丝瓜丝瓜活性炭纤维的制备、表征及其在复合垂直流人工湿地中去除水中四环素的应用

IF 1 4区工程技术

Membrane Water Treatment Pub Date : 2020-07-01 DOI: 10.12989/MWT.2020.11.4.313

Sanjrani Manzoor Ahmed, Boxun Zhou, Yue Wang, Hang Yang, Y. Zheng, X. Shibin

{"title":"Preparation, Characterization of activated carbon fiber (ACF) from loofah and its application in composite vertical flow constructed wetlands for Tetracycline removal from water","authors":"Sanjrani Manzoor Ahmed, Boxun Zhou, Yue Wang, Hang Yang, Y. Zheng, X. Shibin","doi":"10.12989/MWT.2020.11.4.313","DOIUrl":"https://doi.org/10.12989/MWT.2020.11.4.313","url":null,"abstract":"ACF preparation from different materials and its application in constructed wetlands for wastewater treatment has been focused in environmental field. Different materials have been used to prepare ACF around the world. This study aims to prepare, characterize and use of ACF from loofah for removal of Tetracycline from water through composite vertical flow constructed wetlands. ACF was prepared and it was tested for characterization, later it was used for removal of Tetracycline from water through composite vertical flow constructed wetlands. In composite vertical flow constructed wetlands, three HRTs were set according to the experiment, 1D, 2D, and 3D is individually. Samples were transported immediately from collection point to laboratory for analyzing. Samples were measured for Tetracycline (TC), Total Phosphorus (TP), and Total nitrogen and COD. Tetracycline absorbance with respective 356nm was obtained good and HRT is important factor. Results show that composite vertical flow constructed wetlands with ACF from luffa is best option and it is recommended to study further deep analysis.","PeriodicalId":18416,"journal":{"name":"Membrane Water Treatment","volume":"11 1","pages":"313-321"},"PeriodicalIF":1.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44018349","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}

引用次数: 1

A column study of effect of filter media on the performance of sand filter 滤料对砂滤器性能影响的柱状研究

IF 1 4区工程技术

Membrane Water Treatment Pub Date : 2020-07-01 DOI: 10.12989/MWT.2020.11.4.247

Taehoon Kim, H. Oh, JungyeolEom, Chulhwi Park

引用次数: 1

Wastewater treatment using a hybrid process coupling adsorption on marl and microfiltration 泥泥-微滤耦合吸附复合工艺处理废水

IF 1 4区工程技术

Membrane Water Treatment Pub Date : 2020-07-01 DOI: 10.12989/MWT.2020.11.4.275

B. Maimoun, A. Djafer, L. Djafer, R. Marin-Ayral, A. Ayral

{"title":"Wastewater treatment using a hybrid process coupling adsorption on marl and microfiltration","authors":"B. Maimoun, A. Djafer, L. Djafer, R. Marin-Ayral, A. Ayral","doi":"10.12989/MWT.2020.11.4.275","DOIUrl":"https://doi.org/10.12989/MWT.2020.11.4.275","url":null,"abstract":"Hranfa's marl, a local natural mineral, is selected for the decontamination by adsorption of aqueous effluents in textile industry. Its physicochemical characterization is first performed. It is composed mainly of Calcite, Quartz, Ankerite and Muscovite. Its specific surface area is 40 m2g-1. Its adsorption performance is then tested in batch conditions using an industrial organic dye, Bemacid Red E-TL, as a model pollutant. The measured adsorption capacity of Hranfa's marl is 16 mg g-1 which is comparable to that of other types of natural adsorbents. A hybrid process is tested coupling adsorption of the dye on marl in suspension and microfiltration. An adsorption reactor is inserted into the circulation loop of a microfiltration pilot using ceramic membranes. This makes possible a continuous extraction of the treated water provided that a periodic replacement of the saturated adsorbent is done. The breakthrough curve obtained by analyzing the dye concentration in the permeate is close to the ideal one considering that no dye will cross the membrane as long as the adsorbent load is not saturated. These first experimental data provide proof of concept for such a hybrid process.","PeriodicalId":18416,"journal":{"name":"Membrane Water Treatment","volume":"11 1","pages":"275-282"},"PeriodicalIF":1.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44905171","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}

引用次数: 4

Continuous removal of heavy metals by coupling a microbial fuel cell and a microbial electrolytic cell 通过耦合微生物燃料电池和微生物电解电池连续去除重金属

IF 1 4区工程技术

Membrane Water Treatment Pub Date : 2020-07-01 DOI: 10.12989/MWT.2020.11.4.283

Guorong Xie, C. Choi, B. Lim, Shaoxiong Chu

{"title":"Continuous removal of heavy metals by coupling a microbial fuel cell and a microbial electrolytic cell","authors":"Guorong Xie, C. Choi, B. Lim, Shaoxiong Chu","doi":"10.12989/MWT.2020.11.4.283","DOIUrl":"https://doi.org/10.12989/MWT.2020.11.4.283","url":null,"abstract":"This work aims at studying the feasibility of continuous removal of mixed heavy metal ions from simulated zinc plating wastewaters by coupling a microbial fuel cell and a microbial electrolysis cell in batch and continuous modes. The discharging voltage of MFC increased initially from 0.4621 ± 0.0005 V to 0.4864 ± 0.0006 V as the initial concentration of Cr6+ increased from 10 ppm to 60 ppm. Almost complete removal of Cr6+ and low removal of Cu2+ occurred in MFC of the MFC-MEC-coupled system after 8 hours under the batch mode; removal efficiencies (REs) of Cr6+ and Cu2+ were 99.76% and 30.49%. After the same reaction time, REs of nickel and zinc ions were 55.15% and 76.21% in its MEC. Cu2+, Ni2+, and Zn2+ removal efficiencies of 54.98%, 30.63%, 55.04%, and 75.35% were achieved in the effluent within optimum HRT of 2 hours under the continuous mode. The incomplete removal of Cu2+, Ni2+ and Zn2+ ions in the effluent was due to the fact that the Cr6+ was almost completely consumed at the end of MFC reaction. After HRT of 12 hours, at the different sampling locations, Cr6+ and Cu2+ removal efficiencies in the cathodic chamber of MFC were 89.95% and 34.69%, respectively. 94.58%, 33.95%, 56.57%, and 75.76% were achieved for Cr6+, Cu2+, Ni2+ and Zn2+ in the cathodic chamber of MEC. It can be concluded that those metal ions can be removed completely by repeatedly passing high concentration of Cr6+ through the cathode chamber of MFC of the MFC-MEC-coupled system.","PeriodicalId":18416,"journal":{"name":"Membrane Water Treatment","volume":"11 1","pages":"283-294"},"PeriodicalIF":1.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44334811","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}

引用次数: 0

Hybrid neutralization and membrane process for fluoride removalfrom an industrial effluent 混合中和膜法去除工业废水中的氟化物

IF 1 4区工程技术

Membrane Water Treatment Pub Date : 2020-07-01 DOI: 10.12989/MWT.2020.11.4.303

N. Meftah, Abdessalem Ezzeddine, A. Bédoui, A. Hannachi

{"title":"Hybrid neutralization and membrane process for fluoride removalfrom an industrial effluent","authors":"N. Meftah, Abdessalem Ezzeddine, A. Bédoui, A. Hannachi","doi":"10.12989/MWT.2020.11.4.303","DOIUrl":"https://doi.org/10.12989/MWT.2020.11.4.303","url":null,"abstract":"This study aims to investigate at a laboratory scale fluorides removal from an industrial wastewater having excessive F- concentration through a hybrid process combining neutralization and membrane separation. For the membrane separation operation, both Reverse Osmosis (RO) and Nanofiltration (NF) were investigated and confronted. The optimized neutralization step with hydrated lime allowed reaching fluoride removal rates of 99.1 ± 0.4 %. To simulate continuous process, consecutive batch treatments with full recirculation of membrane process brines were conducted. Despite the relatively high super saturations with respect to CaF2, no membrane cloaking was observed. The RO polishing treatment allowed decreasing the permeate fluoride concentration to 0.9 ± 0.3 mg/L with a fluoride rejection rate of 93± 2% at the optimal transmembrane pressure of around 100 psi. When NF membrane was used to treat neutralization filtrate, the permeate fluoride concentration dropped to 1.1± 0.4 mg/L with a fluoride rejection rate of 88± 5% at the optimal pressure of around 80 psi. Thus, with respect to RO, NF allowed roughly 20% decrease of the driving pressure at the expense of only 5% drop of rejection rate. Both NF and RO permeates at optimal operating transmembrane pressures respect environmental regulations for reject streams discharge into the environment.","PeriodicalId":18416,"journal":{"name":"Membrane Water Treatment","volume":"11 1","pages":"303"},"PeriodicalIF":1.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42735052","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}

引用次数: 1

A theoretical approach in 2d-space with applications of the periodic wave solutions in the elastic body 弹性体周期波解在二维空间中的应用

IF 1 4区工程技术

Membrane Water Treatment Pub Date : 2020-07-01 DOI: 10.12989/MWT.2020.11.4.295

A. Ramady, S. R. Mahmoud, H. Atia

引用次数: 1

Operational conditions of electrochemical oxidation process for removal of cyanide (CN-) in real plating wastewater 电化学氧化法去除电镀废水中氰化物的操作条件

IF 1 4区工程技术

Membrane Water Treatment Pub Date : 2020-05-01 DOI: 10.12989/MWT.2020.11.3.217

Xin Zhao, Jang Minsik, Jinwoo Cho, Jae Woo Lee

引用次数: 0

Remediation of cesium-contaminated fine soil using electrokinetic method 用电动法修复铯污染的细土

IF 1 4区工程技术

Membrane Water Treatment Pub Date : 2020-05-01 DOI: 10.12989/MWT.2020.11.3.189

Ilgook Kim, June-Hyun Kim, Sung-Man Kim, C. Park, Hee-Man Yang, I. Yoon

{"title":"Remediation of cesium-contaminated fine soil using electrokinetic method","authors":"Ilgook Kim, June-Hyun Kim, Sung-Man Kim, C. Park, Hee-Man Yang, I. Yoon","doi":"10.12989/MWT.2020.11.3.189","DOIUrl":"https://doi.org/10.12989/MWT.2020.11.3.189","url":null,"abstract":"In this study, electrokinetic remediation equipment was used to remove cesium (Cs) from clay soil and waste solution was treated with sorption process. The influence of electrokinetic process on the removal of Cs was evaluated under the condition of applied electric voltage of 15.0-20.0 V. In addition to monitoring the Cs removal, electrical current and temperature of the electrolyte during experiment were investigated. The removal efficiency of Cs from soil by electrokinetic method was more than 90%. After electrokinetic remediation, Cs was selectively separated from soil waste solution using sorbents. Various adsorption agents such as potassium nickel hexacyanoferrate (KNiHCF), Prussian blue, sodium tetraphenylborate (NaTPB), and zeolite were compared and KNiHCF showed the highest Cs removal efficiency. The Cs adsorption on KNiHCF reached equilibrium in 30 min. The maximum adsorption capacity was 120.4 mg/g at 0.1 g/L of adsorbent dosage. These results demonstrated that our proposed process combined electrokinetic remediation of soil and waste solution treatment with metal ferrocyanide can be a promising technique to decontaminate Cs-contaminated fine soil.","PeriodicalId":18416,"journal":{"name":"Membrane Water Treatment","volume":"11 1","pages":"189-193"},"PeriodicalIF":1.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45235313","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}

引用次数: 0