Mohamed Obaid

Mohamed Obaid
King Abdullah University of Science and Technology | KAUST · Water Desalination and Reuse Center

PhD

About

44
Publications
19,557
Reads
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1,971
Citations
Additional affiliations
April 2017 - present
Gwangju Institute of Science and Technology
Position
  • PostDoc Position
January 2012 - February 2014
Minia University
Position
  • Lecturer
March 2014 - February 2017
Jeonbuk National University
Position
  • PhD Student

Publications

Publications (44)
Article
Water desalination has become one of the viable solutions for water shortages in regions with limited natural resources. In the last two decades, more attention has been paid to renewable energy resources as an alternative approach in desalination processes. Direct solar desalination technology is considered a sustainable method to provide fresh wa...
Article
Produced water (PW) is a contaminated effluent from oil and gas operations that can be treated using forward osmosis (FO) before discharge. However, the FO membrane suffers fouling issues during PW treatment, which can be addressed using the osmotic backwashing (OB) technique. In this study, desalter effluent (DE) was used as feed solution (FS) and...
Article
Full-text available
Microbial electrolysis cells (MECs) have attracted significant interest as sustainable green hydrogen production devices because they utilize the environmentally friendly biocatalytic oxidation of organic wastes and electrochemical proton reduction with the support of relatively lower external power compared to that used by water electrolysis. Howe...
Article
Water and energy are key components to assess the feasibility of any water treatment technique. For industrial applications of forward osmosis (FO), energy optimization needs to be explored further. Asymmetric temperature conditions, having different feed solution (FS) and draw solution (DS) temperatures, are likely to occur in industrial FO applic...
Article
Full-text available
Clean water supply in off-grid locations remains a stumbling stone for socio-economic development in remote areas where solar energy is abundant. In this regard, several technologies have already introduced various solutions to the off-grid freshwater predicament; however, most of them are either costly or complex to operate. Nonetheless, photother...
Article
Electrospun nanofiber membrane (ENM)-based filtration is an advanced technology that treats wastewater for reuse using gravity or low pressure as a driving force, thereby solving water scarcity in a way that is suitable for conditions of energy scarcity. The high hydrophobicity of ENMs remains the main challenge for their application in the treatme...
Article
Microbial electrolysis cell (MEC) technology is a promising bioelectrochemical hydrogen production technology that utilizes anodic bio-catalytic oxidation and cathodic reduction processes. MECs require a lower external energy input than water electrolysis; however, as they also require the application of external power sources, this inevitably rend...
Article
Porous hollow fiber polysulfone (PSf) membranes were fabricated via a phase-inversion process and their performance during ultrafiltration (UF) was evaluated. The effects of the composition and concentration (0–50%) of different bore fluid mixtures, including N-methyl-2-pyrrolidone (NMP)/water, glycerol (G)/water, and ethylene glycol (EG)/water (in...
Article
The antimicrobial properties of two-dimensional materials such as graphene-based surfaces are vital for environmental and biomedical applications. Here, the improvement of the antibacterial property of reduced graphene oxide by the preparation of rGO-CuO nanocomposite films was reported. The rGO-CuO nanocomposites were synthesized via a simple hydr...
Article
Thin film nanocomposite (TFN) membranes embedded with sulfonated graphene oxide (SGO) were fabricated to improve the hydrophilicity, salt rejection and antifouling of nanofiltration (NF) membrane. In this study, the surface properties and structure of polyamide (PA) layer were improved by incorporating SGO into the PA layer. It was prepared by inte...
Article
Enhancing the properties and structure of the ultrafiltration (UF) membrane via rational manipulation is important to optimize their perm-selectivity performance. To overcome the permeance-selectivity trade-off of nanocomposite membranes, Zirconium dioxide nanofibers (ZrO2 NFs) was synthesized in nano-micro size and then incorporated into the polys...
Article
This work investigated the synergistic effect of polyvinylpyrrolidone (PVP)and hydroxypropyl-beta-cyclodextrin (HP-β-CD)as dual pore forming agents on the properties and performance of polysulfone (PSf)ultrafiltration membranes. A fixed concentration of PVP and varying concentrations of HP-β-CD were used to prepare the membranes using the phase inv...
Article
A novel polysulfone (PSf) nanocomposite ultrafiltration (UF) membrane using sulfonated graphene oxide (SGO) as additives was fabricated and investigated. SGO nanoparticles were chemically synthesized from graphene oxide (GO) by using sulfuric acid (H2SO4) and were confirmed by Raman and Fourier transform infrared (FTIR) spectroscopy. The morphology...
Article
Although forward osmosis (FO) technology is considered to be a sustainable solution for the water and energy shortage, it has not been commercialized yet due to a few factors. Internal concentration polarization (ICP) is one of the most important barriers preventing the commercialization of the technology. To overcome the ICP obstacle, novel high-p...
Article
A superoleophobic underwater modified electrospun membrane is produced via a novel effective modification method, to overcome the hydrophobicity and fouling propensity of the electrospun polysulfone (PSf) membrane. In which the fabricated PSf electrospun membranes were immersed in different NaOH concentrations (0, 0.1, 0.5, and 1 M) at different te...
Article
A graphite paper (G) was introduced as an efficient and cheap anode in an air-cathode microbial fuel cell (MFC) for simultaneous wastewater treatment and power generation using real food wastewater without requiring treatment. Anode performance was compared with those of carbon cloth (CC) and carbon paper (CP). The results indicated that the graphi...
Article
Full-text available
This study introduces activated carbon (AC) as an effective anode for microbial fuel cells (MFCs) using real industrial wastewater without treatment or addition of external microorganism mediators. Inexpensive activated carbon is introduced as a proper electrode alternative to carbon cloth and carbon paper materials, which are considered too expens...
Article
Water in the world is becoming an increasingly scarce commodity and the membrane technology is a most effective strategy to address this issue. However, the fouling and low flux of the polymeric membrane remains the big challenges. Novel modified Polyvinylidene fluoride (PVDF) membrane was introduced, in this work, using a novel treatment technique...
Article
A novel nanoflakes of cobalt sheathed with cobalt oxide is electrodeposited on four different carbonaceous anodes; carbon cloth (CC), carbon paper (CP) graphite (G) and activated carbon (AC), to introduce as high-performance anodes of microbial fuel cell (MFC). Interestingly, characterizations results indicated that novel metallic nanoflakes that s...
Article
Basically, to be used as an anode in the air-cathode fuel cells, the onset potential of the introduced material should be lower than the ORR potential. Unfortunately, especially in the field of urea fuel cells, most of the reported electrocatalysts do not own this very important feature. NiMn nanoparticles-decorated activated carbon is introduced a...
Article
N-doped FeNi@graphene is introduced as effective and stable non-precious counter electrode for the dye sensitized solar cells. After preparation of graphene oxide using the chemical route, the obtained product has been refluxed in presence of nickel acetate, ferrous acetate and urea at 150 °C for 12 h. Then, the solid product was mixed with melamin...
Article
Full-text available
Among the various forms of carbon materials, activated carbon still possesses the maximum attention as an optimum commercially available, cheap, and effective electrode material for the capacitive deionization desalination process. However, the well-known hydrophobicity and low specific capacitance limit its wide application. In this study, incorpo...
Article
The properties and cost of anode materials are essential factors affecting the microbial fuel cell (MFC) performance. Therefore, in this study, an electrodeposition technique is presented as a cheap, easy, efficient, and straightforward strategy to increase the exoelectroactive bacterial adhesion and improve the surface properties of the crystallin...
Article
Full-text available
Correction for ‘A novel strategy for enhancing the electrospun PVDF support layer of thin-film composite forward osmosis membranes’ by M. Obaid et al., RSC Adv., 2016, 6, 102762–102772.
Article
The use of commercially available cation and anion exchange membranes to generate power from industrial wastewater obtained from three different industries (food, alcohol and dairy factories) without the addition of external microorganisms or chemicals by using microbial fuel cells (MFCs) was investigated. The results indicate that the original mix...
Article
Full-text available
Solid biomasses can be exploited as an effective source of energy if they can be converted into liquid and gaseous fuels. In this study, highly crystalline Ag–Mn 2 O 3 nanoflakes are introduced as effective catalyst for cracking of lignin into alcohols in supercritical methanol medium. The introduced catalyst was synthesized by a sol–gel process. T...
Article
A simple and novel treatment methodology is introduced to produce PVDF-based thin-film composite forward osmosis (TFC-FO) electrospun membranes for enhanced desalination performance. The proposed treatment strategy is based on improving the surface properties of the PVDF electrospun nanofiber support layer using triethylamine (TEA). The results ind...
Article
Novel amorphous silica nanoparticles-incorporated poly(vinylidine fluoride) electrospun nanofiber mats are introduced as effective membranes for forward osmosis desalination technology. The influence of the inorganic nanoparticles content on the water flux and salt rejection was investigated by preparing electrospun membranes having 0, 0.5, 1, 2 an...
Article
Full-text available
Co-B nanoflakes-like structure supported over nanoporous TiO2 nanofibers (Co-B NFls-TiO2 NFs, nanocatalyst) was synthesized in two steps using electrospinning technique and chemical reduction method. Nanoporous TiO2 NFs were prepared by calcination of electrospun sol-gel consisting of titanium tetraisopropoxide (TIIP) and polyvinylpyrrolidone (PVP)...
Article
Solid biomasses can be exploited as an effective source of energy if they can be converted into liquid and gaseous fuels. In this study, highly crystalline Ag–Mn2O3 nanoflakes are introduced as effective catalyst for cracking of lignin into alcohols in supercritical methanol medium. The introduced catalyst was synthesized by a sol–gel process. Typi...
Article
Morphology and composition strongly affect the photocatalyst performance. Due to the large axial ratio, nanofibrous morphology showed distinct enhancement in the photocatalysis applications. In this study, the influence of the composition of TixZr(1-x)O2 nanofibers on the photocatalytic activity toward degradation of methylene blue dye and water sp...
Article
In this study, Co/CeO2 decorated carbon nanofibers are introduced as effective electro-catalyst for methanol oxidation. Poly(vinyl alcohol) was used as carbon source due to its high carbon content characteristic as compared to many others polymer precursors for CNFs synthesis. Preparation of the introduced nanofibers could be achieved by calcinatio...
Conference Paper
The rate of copper cementation on iron rod was investigated. The study was mainly dedicated to illustrate the effect of application of electromagnetic field (EMF) on the rate of cementation. The magnetic flux was placed parallel to the iron rod and different magnetic field strength was studied. The results showed that without EMF, the rate of mass...
Article
The effect of an electromagnetic field (EMF) on the rate of copper(II) cementation from copper sulfate solutions on a rotating iron cylinder was investigated. The studied variables were cylinder rotation speed, magnetic field strength, and magnetic field direction. The application of EMF increased the rate of cementation in both parallel and perpen...
Article
For DSSCs application, highly efficient photoelectrode based on nitrogen (N) and graphene oxide (GO) co-incorporated TiO2 nanofibers were synthesized successfully by two simple successive methods; electrospinning followed by hydrothermal processes. The influence of the N and GO co-incorporation on the morphology, crystal structure and optical behav...
Article
Membrane technology is the most promising process for oil/water separation operation if the hydrophilicity, fouling and reusability properties could be improved. In this study, novel effective and reusable membrane for oil-water separation process is introduced based on modification of polysulfone (PSF) electrospun nanofiber mats. The modification...
Article
Full-text available
Mass transfer rate is the main controlling parameter in the cementation process. Due to the economical aspects, iron is the most popular sacrificing metal. Accordingly, during the cementation process, electromagnetic field can be utilized to improve the motion of Fe ions in the aqueous solution. In the present study, the rate of copper (II) cementa...
Book
Full-text available
Magnetic field considers modern innovation in recycling the precious metals which are thrown in industrial liquid effluents. This book is dedicated to study the effect of the electromagnetic field on the removal of copper, as a toxic metal, from waste-water stream and re-use it as precious metal

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