A.R. Hassan

• Lecturer at Sultan Zainal Abidin University

Lake is one of the complete ecosystems and source of freshwater itself. Lake serves as a habitat for aquatic plants and animals, including the microorganisms. Lake can either be formed naturally or manmade. Most formed lakes are from volcanic eruptions, or cave ruins and lakes are formed from the rainwater. Man-made lakes usually formed after minin...

In this study, the performance and structural properties of enhanced skinned asymmetric nanofiltration (NF) membranes were experimentally and theoretically analyzed. Based on Donnan and steric-hindrance transport mechanism, the relationship of performances and key properties of the fabricated nanofiltration membranes were examined. At the optimum c...

Desalination is emerging as one of the most promising solutions to extraction and increasing global demand for drinking water. A water purification process called reverse osmosis (RO), in which dissolved solids are separated from solutions by partially permeable membranes. Advances in membrane technology have resulted in the removal of up to 99% of...

In water processing industry, pressurised pipeline problems bring dangerous consequences, causing flooding, traffic accidents or death, financial and material losses and the disruption of the water supply. There are some problems in water pressurised pipelines system occur gradually, and some problems occur in very sudden without any warning with m...

The roles of polyvinyl-pyrrolidone (PVP) additive in the tailoring of pores, pore size distribution, morphologies and molecular weight cut-off (MWCO) in phase inversion asymmetric nanofiltration membranes was addressed. Using established solute transport method, scanning electron microscopy (SEM) and Minitab software, details analysis of the enhanc...

The effect of evaporation time on the fabrication of fine skinned asymmetric polyethersulfone nanofiltration membrane was studied. Nanofiltration experiment and modeling data revealed that the variation of the evaporation time during dry/wet phase inversion process was found to significantly affect the membrane performance and properties. The evapo...

This paper discusses a pioneering work on the effect of hydrophilic-lipophilic balance (HLB) values and non-ionic surfactant concentrations on the performance, architecture i.e. morphology and molecular orientation of polyethersulfone/polyether glycol (PES/PEG 600) for surfactant membrane. PES surfactant membranes were developed through phase inver...

In this study, the effect of poly(vinyl pyrrolidone) (PVP) additive on the fabrication of asymmetric nanofiltration (NF) membranes was investigated in terms of performance, structural details and key properties. On addition of PVP ranging from 2 to 10 wt% into the dope solution, the fabricated NF membranes exhibited significantly different in prope...

The principal objective of a study is indeed a well-functioning membrane such as high reject efficiency and high flow rate. In fact, too many studies are carried out on factors influencing the membrane, such as pressure intensity, polymer form, additive type, temperature influence during processing, and so on. Therefore, the study of thermal behavi...

A well-functioning membrane such as high rejection efficiency and high flux rate is indeed the main goal in a study. In fact, so many studies on the factors that affect the membrane are carried out, such as pressure rate, polymer type, additive type, temperature effect during fabrication and so on. Therefore, the development of analytical modeling...

Effective treatment of dyes wastewater is important to prevent water pollution. According to data by the Department of Environment (DOE) in 2017, 51 rivers have been polluted because of sewage, industry growth, livestock breeding and attitude of some irresponsible Malaysians that dump trash into river. One of the industries that contribute to river...

This paper addressed the pioneering work on the effects of dual surfactants component on the performance, morphologies and molecular properties of polyvinylidene fluoride/polyether glycol (PVDF/PEG 200) ultrafiltration (UF) membranes. The PVDF surfactant membranes were prepared via dry/wet via phase inversion technique with the addition of sodium d...

Water shortage has become a real problem at global level and therefore, new and innovative technologies were established to provide sustainable solutions to water crisis. One of the effective approaches to resolve the global challenges is introducing the membrane-based desalination. Reverse Osmosis (RO) is a pressure driven membrane process which b...

The effect of surfactants that are cationic (Cetyl trimethylammonium bromide (CTAB)), anionic (Sodium Dodecyl Sulphate (SDS)) and non-ionic (Triton X-100) on performance, morphologies and molecular orientation of Polysulfone (PSF) low pressure reverse osmosis (LPRO) membrane were addressed. The experimental data showed that the increasing of 0.5 wt...

In this study, the effectiveness of coagulation was assessed in arsenic removal from the Zarqa, Jordan and Yarmouk River. Graphite-Furnace Atomic Absorption Spectrophotometry (GF-AAS) technique was used to analyse the arsenic percentage. The Zarqa River recorded the highest arsenic value at upstream and had the lowest value at downstream. The highe...

This work focused on the addition of different pore formation-controlling agent to a polysulfone/cellulose acetate blend membrane via immersion precipitation using phase inversion technique to improve the fouling resistance and selective polyphenol removal of apple juice. The membranes were prepared by blending hydrophilic polyvinylpyrrolidone (PVP...

In membrane making, surfactant material is one of the effective strategies to produce membrane / thin film with optimal and specific properties. This paper addressed the effect of Sodium dodecyl sulphate (SDS), Triton X-100 and Tween 80 as additives for the making of Polyvinylidene fluoride (PVDF) ultrafiltration (UF) membranes. The fabricated memb...

Batik has become one of the well-known industries because of the exclusive design and colours. The wastewater produced during the Batik production could contaminate the water bodies due to the contaminants present in the effluents. The need to remove the contaminants, in turn, calls for an efficient and effective Batik wastewater treatment prior to...

The study is focussed on the fabrication of various polysulfone/cellulose acetate (PSf/CA) polymer ratio with high polymer concentration of 20 wt. % via dry/wet phase inversion technique for membrane performances. These membranes were prepared by blending four different polysulfone/cellulose acetate ratios of 100/0, 90/10, 80/20 and 70/30 in a solv...

In this study, the effects of polymer concentration and additive in the formation of asymmetric nanofiltration (NF) membrane were evaluated. The membrane fabrication was carried out via dry/wet phase inversion technique. A new formulation of dope solution with polymer concentration ranging between 17 wt% to 21 wt% and the present of additive was de...

Water is one of the basic needs which essential to life but cannot take it easy, it becomes more concern when a flood, there is plenty of dirty water than clean water, and the sources of the water are not approved to use. There are many kinds of waterborne pathogens which can donate diseases also death if not treating the water well before use. The...

This study was implemented to prove the sedimentation problem. The technique of analysis of primary data obtained which determine according procedure Gravimetric method, Gerald & Kenneth and the scale Udden - Wentworth which included median, mean, standard deviation, skewness, and kurtosis. The results showed the highest average of TSS (mg/L) is 67...

River is one of the most multifarious regular systems. The database can help in the appropriate understanding of river plan change and know the stand of Terengganu River, Malaysia. The data collected from Geographic Information System (GIS) and Remote Sensing (RS) database. Analysis of Types of Lateral Activity (TYLAT) techniques and Modes of Meand...

The growths of the African catfish (Clarias gariepinus) and water spinach (Ipomoea aquatica) were evaluated in recirculation aquaponic system (RAS). Fish production performance, plant growth and nutrient removal were measured and their dependence on hydraulic loading rate (HLR) was assessed. Fish production did not differ significantly between hydr...

Recirculating aquaculture–hydroponic systems were designed to provide an artificial, controlled environment that optimizes the growth of fish (or other aquatic species) and soil-less plants, complete control of water quality, the production schedule and the fish product, while conserving water resources. Nutrients removal such as inorganic nitrogen...

The effects of additive concentration polyvinylpyrrolidone (PVP K30) on the performance and morphological structure of polyethersulfone (PES) nanofiltration membranes were investigated by varying polymer concentration ranges from 1.00 to 9.00 wt%. By using the solution–diffusion mechanism and theoretical models, the structural properties of membran...

The effect of coagulant temperature in a membrane-making process was investigated. As different coagulant temperatures 15°C, 28°C, 45°C and 60°C were fixed in a wet phase, an asymmetric ultra-low pressure membrane was prepared. In terms of water flux, ion permeation and electrolyte rejection, the experimental results demonstrated promising and inte...

In this study, a novel asymmetric ultra low pressure membrane (AULPM) was developed by a phase inversion technique. Using a different concentration of polyethersulfone (PES), the AULPM was developed by a simple dry/wet process. Using a low operating pressure (1–5 bars), the membranes performances that are pure water permeation, flux and salt reject...

In this study, the effects of polymer concentration on the performances and fine structural details of asymmetric nanofiltration (NF) membranes were investigated. Based on the well known models/equations on pore flow, solution diffusion and extended Nernst–Planck, the experimental data (electrolyte/ions rejection) has been modeled. Spielger–Kedem e...

In this study, we report the effects of shear rates and polymer concentrations in the formation of asymmetric nanofiltration membrane using a simple dry/wet phase inversion technique. Employing the combination of irreversible thermodynamic model, solution-diffusion model (Spiegler–Kedem equation), steric-hindrance pore (SHP) model and Teorell–Meyer...

Pore-filled polymer electrolyte membranes have been prepared as a potential proton exchange membrane by radiation induced grafting using simultaneous technique. The porous substrate films were grafted in a subsequent step after flooding the membranes pores with styrene monomer. The grafted films were then sulfonated in a post-grafting reactions. Th...

Asymmetric cellulose acetate nanofiltration (NF) membranes were prepared at different shear rate between 152.0 and 506.67 s−1 to investigate the effect of casting shear rate on the fine structural details of the membrane and membrane performance by using sodium chloride solution. The experimental data is modeled based on the pore flow, solution–dif...

Mean pore size and pore size distributions of asymmetric nanofiltration membranes were characterized by using the solute transport methods. The nanofiltration experiment was conducted using the polyethylene glycol feed solutions at the various molecular weight. Based on the solute rejection data, the membrane properties in terms of molecular weight...