Characteristics and separation efficiencies of PPSU/PEI/PEG blend membranes with different compositions for water treatment

2012 ◽  
Vol 66 (12) ◽  
pp. 2712-2721 ◽  
Author(s):  
Li-Luen Hwang ◽  
Ming-Yen Wey ◽  
Jyh-Cherng Chen
Keyword(s):  
Wastewater Treatment ◽  
Polyethylene Glycol ◽  
Water Reuse ◽  
Membrane Structure ◽  
Separation Efficiency ◽  
Hydrophobic Properties ◽  
Blend Membrane ◽  
Structure Morphology ◽  
Blend Membranes ◽  
And Performance

To overcome the problems and constraints in the application of single organic membranes in wastewater treatment or water reuse processes, different blend membranes were prepared and modified to improve the separation efficiency of humic acids (HAs) and mitigate the fouling problems occurring during water purification. This study extends the results of our previous research and further investigates the relationships between the composition of polyphenylsulfone/polyetherimide/polyethylene glycol (PPSU/PEI/PEG) blend membranes and membrane characteristics and performance. The experimental results showed that the PEI and PEG component ratios of PPSU could significantly affect the blend membrane structure, morphology, and properties. With the increase in PEG concentration, the pore volume, pore size distribution, and permeability of the blend membranes was enhanced. The hydrophilic or hydrophobic properties of the blend membranes can be modified by changing the PPSU/PEI ratios. The optimum composition of the PPSU/PEI/PEG blend membrane was 35/5/6 wt%, and the corresponding permeability and HAs separation efficiency was 127 Lm−2h−1 and 83%, respectively.

Chromium (III) Removal by Epoxy-Cross-Linked Polyethersulfone Ultrafiltration Membrane

2014 ◽  
Vol 70 (2) ◽  
Author(s):  
M. J. J. Erniza ◽  
S. C. Low
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Field Emission ◽  
Morphological Study ◽  
Separation Efficiency ◽  
Permeate Flux ◽  
Blend Membrane ◽  
Membrane Morphology ◽  
Blend Membranes ◽  
Scanning Electron

This study attempts to correlate the changes in membrane morphology with the separation efficiency of the polyethersulfone/epoxy resin (PES/ER) blend membranes. Intermolecular interactions between the components in PES/ER blend membranes were established by ATR-FTIR and the morphological study by field emission scanning electron microscopy (FESEM) has confirmed the significant changes of pores connectivity between the sub-layers of membrane. PES/ER blend membrane with 10% of ER revealed highest rejection of Cr(III) ions at 85% without jeopardizing the permeate flux (12.17 L/m2h). From the results, it could be concluded that the PES/ER blend membrane has the great potential in the removal of chromium ions from an aqueous waste. 

Renovated Water Reuse from Rapid Infiltration System

1995 ◽  
Vol 30 (1) ◽  
pp. 111-114
Author(s):  
Duan ZhenBo ◽  
Wang Shang ShaoTang ◽  
Li RuQi ◽  
Wu XureQing ◽  
Gao Erjing
Keyword(s):  
Developing Countries ◽  
Wastewater Treatment ◽  
Water Reuse ◽  
The Cost

Abstract The use of renovated water from a rapid infiltration system for fish and duck farming was evaluated. It was concluded that the flesh of fish and duck was edible. The use of this approach is beneficial to the environment and economy, especially in developing countries. The production of fish and duck can offset the cost of wastewater treatment in many cases.

scholarly journals Enhancing Pervaporation Membrane Selectivity by Incorporating Star Macromolecules Modified with Ionic Liquid for Intensification of Lactic Acid Dehydration

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1811
Author(s):  
Valeriia Rostovtseva ◽  
Alexandra Pulyalina ◽  
Roman Dubovenko ◽  
Ilya Faykov ◽  
Kseniya Subbotina ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Lactic Acid ◽  
Polymer Matrix ◽  
Separation Factor ◽  
Membrane Structure ◽  
High Performance ◽  
Separation Efficiency ◽  
Pharmaceutical Chemical ◽  
Permeate Flux ◽  
Membrane Components

Modification of polymer matrix by hybrid fillers is a promising way to produce membranes with excellent separation efficiency due to variations in membrane structure. High-performance membranes for the pervaporation dehydration were produced by modifying poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) to facilitate lactic acid purification. Ionic liquid (IL), heteroarm star macromolecules (HSM), and their combination (IL:HSM) were employed as additives to the polymer matrix. The composition and structure of hybrid membranes were characterized by X-ray diffraction and FTIR spectroscopy. Scanning electron microscopy was used to investigate the membranes surface and cross-section morphology. It was established that the inclusion of modifiers in the polymer matrix leads to the change of membrane structure. The influence of IL:HSM was also studied via sorption experiments and pervaporation of water‒lactic acid mixtures. Lactic acid is an essential compound in many industries, including food, pharmaceutical, chemical, while the recovering and purifying account for approximately 50% of its production cost. It was found that the membranes selectively remove water from the feed. Quantum mechanical calculations determine the favorable interactions between various membrane components and the liquid mixture. With IL:HSM addition, the separation factor and performance in lactic acid dehydration were improved compared with pure polymer membrane. The best performance was found for (HSM: IL)-PPO/UPM composite membrane, where the permeate flux and the separation factor of about 0.06 kg m−2 h−1 and 749, respectively, were obtained. The research results demonstrated that ionic liquids in combination with star macromolecules for membrane modification could be a promising approach for membrane design.

Fabrication of zirconia-kaolin dual layer hollow fiber membrane: Physical and performance study for industrial wastewater treatment

2021 ◽  
Vol 41 ◽  
pp. 102031
Author(s):  
Mohammad Arif Budiman Pauzan ◽  
Mohd Hafiz Dzarfan Othman ◽  
Nurul Jannah Ismail ◽  
Mohd Hafiz Puteh ◽  
Ahmad Fauzi Ismail ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Hollow Fiber ◽  
Industrial Wastewater ◽  
Hollow Fiber Membrane ◽  
Fiber Membrane ◽  
Performance Study ◽  
Industrial Wastewater Treatment ◽  
And Performance

Wastewater treatment using DAF for process water reuse in apatite flotation

2021 ◽  
pp. 127285
Author(s):  
Mariana A. Santos ◽  
Fabiano Capponi ◽  
Carlos H. Ataíde ◽  
Marcos A.S. Barrozo
Keyword(s):  
Wastewater Treatment ◽  
Water Reuse ◽  
Process Water

Biodegradable blend membranes of poly (butylene succinate)/cellulose acetate/dextran: Preparation, characterization and performance

2017 ◽  
Vol 173 ◽  
pp. 497-507 ◽  
Author(s):  
Ali Hoseinzadeh Bahremand ◽  
Seyed Mahmoud Mousavi ◽  
Ali Ahmadpour ◽  
Mostafa Taherian
Keyword(s):  
Cellulose Acetate ◽  
Butylene Succinate ◽  
Blend Membranes ◽  
And Performance

scholarly journals Wastewater Treatment and Water Reuse in Spain. Current Situation and Perspectives

Water ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1551 ◽  
Author(s):  
Antonio Jodar-Abellan ◽  
María Inmaculada López-Ortiz ◽  
Joaquín Melgarejo-Moreno
Keyword(s):  
Water Quality ◽  
European Union ◽  
Wastewater Treatment ◽  
Water Reuse ◽  
Wastewater Reuse ◽  
The European Union ◽  
Water Planning ◽  
Structural Problem ◽  
The World ◽  
Access To Water

The issues of wastewater treatment and the reuse of water are of great importance, especially in areas where the shortage of conventional resources is a structural problem, as it is in the case of Spain. Wastewater reuse is a valid mechanism to avoid problems derived from droughts and water scarcity. It allows access to water resources in areas with water restrictions and to prevent futures scenarios, due to it being expected that water consumption will double by 2050 over the world. Thus, the likelihood that this unconventional, strategic resource would become scarce is unquestionable, particularly in cases where water planning and exploitation systems prioritize the preservation, protection, and improvement of water quality, as well as the sustainable and efficient use of natural resources. This paper shows how wastewater treatment and reuse are linked, as the reuse of wastewater is associated with a previous regeneration, and both of them are essential tools for maximizing environmental outcomes, as called for in the European Union Directives.

Integration of Fenton's reaction based processes and cation exchange processes in textile wastewater treatment as a strategy for water reuse

2020 ◽  
Vol 272 ◽  
pp. 111082
Author(s):  
Laís G.M. Silva ◽  
Francisca C. Moreira ◽  
Maria Alice P. Cechinel ◽  
Luciana P. Mazur ◽  
Antônio A. Ulson de Souza ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Cation Exchange ◽  
Water Reuse ◽  
Textile Wastewater ◽  
Fenton’S Reaction ◽  
Exchange Processes ◽  
Textile Wastewater Treatment
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