Enhanced separation performance of microfiltration carbon membranes for oily wastewater treatment by an air oxidation strategy

Dual-layer hollow fiber (DLHF) nanocomposite membrane prepared by co-extrusion technique allows a uniform distribution of nanoparticles within the membrane outer layer to enhance the membrane performance. The effects of spinning parameters especially the air gap on the physico-chemical properties of ZrO2-TiO2 nanoparticles incorporated PVDF DLHF membranes for oily wastewater treatment have been investigated in this study. The zeta potential of the nanoparticles was measured to be around –16.5 mV. FESEM–EDX verified the uniform distribution of Ti, Zr, and O elements throughout the nanoparticle sample and the TEM images showed an average nanoparticles grain size of ~12 nm. Meanwhile, the size distribution intensity was around 716 nm. A lower air gap was found to suppress the macrovoid growth which resulted in the formation of thin outer layer incorporated with nanoparticles. The improvement in the separation performance of PVDF DLHF membranes embedded with ZrO2-TiO2 nanoparticles by about 5.7% in comparison to the neat membrane disclosed that the incorporation of ZrO2-TiO2 nanoparticles make them potentially useful for oily wastewater treatment.

Download Full-text

Enhanced separation performance of carbon nanotube–polyvinyl alcohol composite membranes for emulsified oily wastewater treatment under electrical assistance

Separation and Purification Technology ◽

10.1016/j.seppur.2017.12.058 ◽

2018 ◽

Vol 197 ◽

pp. 107-115 ◽

Cited By ~ 22

Author(s):

Gang Yi ◽

Shuo Chen ◽

Xie Quan ◽

Gaoliang Wei ◽

Xinfei Fan ◽

...

Keyword(s):

Wastewater Treatment ◽

Carbon Nanotube ◽

Polyvinyl Alcohol ◽

Composite Membranes ◽

Separation Performance ◽

Oily Wastewater ◽

Oily Wastewater Treatment

Download Full-text

Thin Film Composite Membrane for Oily Waste Water Treatment: Recent Advances and Challenges

Membranes ◽

10.3390/membranes8040086 ◽

2018 ◽

Vol 8 (4) ◽

pp. 86 ◽

Cited By ~ 20

Author(s):

Nor Ahmad ◽

Pei Goh ◽

Zulhairun Abdul Karim ◽

Ahmad Ismail

Keyword(s):

Thin Film ◽

Wastewater Treatment ◽

Waste Water Treatment ◽

Separation Performance ◽

Oily Wastewater ◽

Film Composite ◽

Thin Film Composite ◽

Recent Advances ◽

Tfc Membrane ◽

Oily Wastewater Treatment

Oily wastewater discharge from various industry processes and activities have caused dramatic impacts on the human and environment. Treatment of oily wastewater using membrane technology has gained worldwide attention due to its efficiency in removing the amount and concentration of oil and grease as well as other specific pollutants in order to be reused or to fulfill stringent discharge standard. The application of thin film composite (TFC) membrane in reverse osmosis (RO) and forward osmosis (FO) for oily wastewater treatment is an emerging and exciting alternative in this field. This review presents the recent and distinctive development of TFC membranes to address the issues related to oily wastewater treatment. The recent advances in terms of TFC membrane design and separation performance evaluation are reviewed. This article aims to provide useful information and strategies, in both scientific knowledge advancement and practical implementation point of view, for the application TFC membrane for oily wastewater treatment.

Download Full-text

A Review on Membrane Technology and Chemical Surface Modification for the Oily Wastewater Treatment

Materials ◽

10.3390/ma13020493 ◽

2020 ◽

Vol 13 (2) ◽

pp. 493 ◽

Cited By ~ 8

Author(s):

Fatma Yalcinkaya ◽

Evren Boyraz ◽

Jiri Maryska ◽

Klara Kucerova

Keyword(s):

Wastewater Treatment ◽

Surface Modification ◽

Living Organism ◽

Membrane Technology ◽

Separation Performance ◽

Oily Wastewater ◽

Chemical Surface ◽

Operation Process ◽

Oily Wastewater Treatment ◽

Surface Modified

Cleaning of wastewater for the environment is an emerging issue for the living organism. The separation of oily wastewater, especially emulsified mixtures, is quite challenged due to a large amount of wastewater produced in daily life. In this review, the membrane technology for oily wastewater treatment is presented. In the first part, the global membrane market, the oil spill accidents and their results are discussed. In the second and third parts, the source of oily wastewater and conventional treatment methods are represented. Among all methods, membrane technology is considered the most efficient method in terms of high separation performance and easy to operation process. In the fourth part, we provide an overview of membrane technology, fouling problem, and how to improve the self-cleaning surface using functional groups for effectively treating oily wastewater. The recent development of surface-modified membranes for oily wastewater separation is investigated. It is believed that this review will promote understanding of membrane technology and the development of surface modification strategies for anti-fouling membranes.

Download Full-text