High flux and antifouling properties of negatively charged membrane for dyeing wastewater treatment by membrane distillation
AuthorsAn, Alicia Kyoungjin
Tabatabai, S. Assiyeh Alizadeh
KAUST DepartmentWater Desalination and Reuse Research Center (WDRC)
Biological and Environmental Sciences and Engineering (BESE) Division
Environmental Science and Engineering Program
Water Desalination & Reuse Research Cntr
MetadataShow full item record
AbstractThis study investigated the applicability of membrane distillation (MD) to treat dyeing wastewater discharged by the textile industry. Four different dyes containing methylene blue (MB), crystal violet (CV), acid red 18 (AR), and acid yellow 36 (AY) were tested. Two types of hydrophobic membranes made of polytetrafluoroethylene (PTFE) and polyvinylidene fluoride (PVDF) were used. The membranes were characterized by testing against each dye (foulant-foulant) and the membrane–dye (membrane-foulant) interfacial interactions and their mechanisms were identified. The MD membranes possessed negative charges, which facilitated the treatment of acid and azo dyes of the same charge and showed higher fluxes. In addition, PTFE membrane reduced the wettability with higher hydrophobicity of the membrane surface. The PTFE membrane evidenced especially its resistant to dye absorption, as its strong negative charge and chemical structure caused a flake-like (loose) dye–dye structure to form on the membrane surface rather than in the membrane pores. This also enabled the recovery of flux and membrane properties by water flushing (WF), thereby direct-contact MD with PTFE membrane treating 100 mg/L of dye mixtures showed stable flux and superior color removal during five days operation. Thus, MD shows a potential for stable long-term operation in conjunction with a simple membrane cleaning process, and its suitability in dyeing wastewater treatment.
CitationHigh flux and antifouling properties of negatively charged membrane for dyeing wastewater treatment by membrane distillation 2016 Water Research
SponsorsWe acknowledge the financial support from City University of Hong Kong under its Start-up Grant for new faculty (Grant No. 7200447).
- Fouling and long-term durability of an integrated forward osmosis and membrane distillation system.
- Authors: Husnain T, Mi B, Riffat R
- Issue date: 2015
- Membrane distillation combined with an anaerobic moving bed biofilm reactor for treating municipal wastewater.
- Authors: Kim HC, Shin J, Won S, Lee JY, Maeng SK, Song KG
- Issue date: 2015 Mar 15
- Composite Membrane with Underwater-Oleophobic Surface for Anti-Oil-Fouling Membrane Distillation.
- Authors: Wang Z, Hou D, Lin S
- Issue date: 2016 Apr 5
- Membrane fouling and wetting in membrane distillation and their mitigation by novel membranes with special wettability.
- Authors: Wang Z, Lin S
- Issue date: 2017 Apr 1
- Sustainable water recovery from oily wastewater via forward osmosis-membrane distillation (FO-MD).
- Authors: Zhang S, Wang P, Fu X, Chung TS
- Issue date: 2014 Apr 1
Showing items related by title, author, creator and subject.
Micro-and/or nano-scale patterned porous membranes, methods of making membranes, and methods of using membranesWang, Xianbin; Chen, Wei; Wang, Zhihong; Zhang, Xixiang; Yue, Weisheng; Lai, Zhiping (2015-01-22)Embodiments of the present disclosure provide for materials that include a pre-designed patterned, porous membrane (e.g., micro- and/or nano-scale patterned), structures or devices that include a pre-designed patterned, porous membrane, methods of making pre-designed patterned, porous membranes, methods of separation, and the like.
Graphene-coated hollow fiber membrane as the cathode in anaerobic electrochemical membrane bioreactors – Effect of configuration and applied voltage on performance and membrane foulingWerner, Craig M.; Katuri, Krishna; Rao, Hari Ananda; Chen, Wei; Lai, Zhiping; Logan, Bruce E.; Amy, Gary L.; Saikaly, Pascal (American Chemical Society (ACS), 2015-12-22)Electrically conductive, graphene-coated hollow-fiber porous membranes were used as cathodes in anaerobic electrochemical membrane bioreactors (AnEMBRs) operated at different applied voltages (0.7 V and 0.9 V) using a new rectangular reactor configuration, compared to a previous tubular design (0.7 V). The onset of biofouling was delayed and minimized in rectangular reactors operated at 0.9 V, compared to those at 0.7 V due to higher rates of hydrogen production. Maximum transmembrane pressures for the rectangular reactor were only 0.10 bar (0.7 V) or 0.05 bar (0.9 V) after 56 days of operation, compared to 0.46 bar (0.7 V) for the tubular reactor after 52 days. The thickness of the membrane biofouling layer was approximately 0.4 µm for rectangular reactors and 4 µm for the tubular reactor. Higher permeate quality (TSS = 0.05 mg/L) was achieved in the rectangular AnEMBR than the tubular AnEMBR (TSS = 17 mg/L), likely due to higher current densities that minimized the accumulation of cells in suspension. These results show that the new rectangular reactor design, which had increased rates of hydrogen production, successfully delayed the onset of cathode biofouling and improved reactor performance.
Pore-scale modeling and simulation of flow, transport, and adsorptive or osmotic effects in membranes: the influence of membrane microstructureCalo, Victor M.; Iliev, Oleg; Lakdawala, Z.; Leonard, K. H. L.; Printsypar, Galina (Springer Science + Business Media, 2015-07-17)The selection of an appropriate membrane for a particular application is a complex and expensive process. Computational modeling can significantly aid membrane researchers and manufacturers in this process. The membrane morphology is highly influential on its efficiency within several applications, but is often overlooked in simulation. Two such applications which are very important in the provision of clean water are forward osmosis and filtration using functionalized micro/ultra/nano-filtration membranes. Herein, we investigate the effect of the membrane morphology in these two applications. First we present results of the separation process using resolved finger- and sponge-like support layers. Second, we represent the functionalization of a typical microfiltration membrane using absorptive pore walls, and illustrate the effect of different microstructures on the reactive process. Such numerical modeling will aid manufacturers in optimizing operating conditions and designing efficient membranes.