Gas Separation Performance through Carbon Membrane: The Effect of Polymer Composition

A comprehensive requirement in terms of efficient strategies in collecting reasonably high purity of H2 is predicted due to the development of hydrogen (H2)-based economy. The purpose of a H2- selective membrane is to exploit the high diffusivity features of H2 and also to limit the consequence of lower solubility. Owing by its highly permeable and selective characteristics, carbon membranes provide great potential in gas separation industry. Hence, the objective of this study is to examine the effect of carbonization parameter, in particular the composition of polymer on the properties of gas separation. Matrimid 5218 was used as a precursor for the fabrication of carbon tubular membrane to manufacture a carbon membrane with high quality through the process of carbonization. The surface of tubular ceramic tubes was coated with polymer solution via dip-coating technique. The dip-coating method provides an excellent potential in the manufacture of defect-free carbon membrane. The resultant Matrimid 5218-based carbon tubular membranes were characterized in terms of structural morphology using scanning electron microscopy (SEM), chemical structure using Fourier transform infrared (FTIR), thermal stability, and gas permeation properties using pure gas permeation system. The best formulation for Matrimid 5218-based carbon tubular membrane fabrication was shown by the polymer solution containing 15wt% of Matrimid 5218. The highest H2/N2 selectivity of 401.08±2.56 was achieved by carbon membrane carbonized at 800°C with 2°C/min of heating rate

Development of a usable online counseling management system

This paper is aimed at identifying solution regarding counseling management of employees’ life problem including personal and work place problems. This paper involved the design, development and evaluation of Employee Needs Assessment Inventory (ENAI) functionality and usability among employees in Malaysia. This project used a quantitative approach called case study in the process of collecting data. In general, this project was divided into three phases: system requirements analysis, system design and development, and formative evaluation. The result from of ENAI formative evaluation had proven that the system could be able to record employees’ life problem (health, family, financial, spiritual, work issue, career, interpersonal relationship and work environment). Besides, the system can be used by three tiers (employees, employer and counselor) to access the counseling information, provide communication networking facility for a diversity user, and assist in the generation of reports and analysis, and also to support counseling management for the three tiers

Detection of Emergency Vehicle Using Combination of HSV Color Space and RGB Color Space Technique for Intelligent Traffic Light System

One of the factors of traffic congested in a busiest town is due to a traffic light at the road intersection

Effect of cinnamon essential oil on morphological, flammability and thermal properties of nanocellulose fibre–reinforced starch biopolymer composites

The effect of different cinnamon essential oil (CEO) contents on flammability, thermal stability and morphological characteristics of nanocellulose fibre–reinforced starch biopolymer composites was studied. This sugar palm nanocellulose reinforced with sugar palm starch, containing 0–2% CEO, was prepared through solution casting technique. From scanning electron microscopy analysis, the cross-sections of the CEO-containing films showed appearance of micro-porous spots as micro-porous holes because of the occurrence of partial evaporation on the cryo-fractured surface as a result of the vacuum condition. Increment in CEO concentration resulted in increasing trend of the number and size of the micro-porous holes. Significant increase was observed in the thermal stability with the CEO loading when compared with neat composites. Besides that, increasing CEO loading also resulted in decrement of linear burning rate of the composites

Antimicrobial activity, physical, mechanical and barrier properties of sugar palm based nanocellulose/starch biocomposite films incorporated with cinnamon essential oil

The demand of antimicrobial active packaging is escalating due to the needs of improving quality and shelf life of food. In this work, sugar palm starch (SPS)/sugar palm nanocrystalline cellulose (SPNCC) incorporated with cinnamon essential oil (EO) biodegradable nanocomposite films were prepared by using solvent casting method. Mechanical properties test revealed that films incorporated with cinnamon EO showed improved tensile strength and tensile modulus values from 4.8 to 5.3 MPa and 122.49–130.52 MPa respectively. Additionally, the density and moisture content were reduced from 1.38 to 1.31 g/cm3 and from 13.65 to 12.33% respectively. The antimicrobial test was carried out by agar disc method (ADM) to evaluate the inhibition effect of the films on the gram positive bacteria, gram negative bacteria and yeast. The result suggested that The higher the amount of EO used (2.0 wt) yielded, the higher the inhibition zone occurred for B. subtilis, S. aereus and E. coli, which were 7.85, 6.63, and 7.43 mm respectively. Overall, cinnamon EO incorporated SPS/SPNCC biodegradable nanocomposite film is a good candidate as an alternative for active packaging material

Current advances in membranes for competent hydrogen purification: A short review

Hydrogen (H2) has been recognized as the clean potent energy carrier to pacify the worldwide energy and environmental problem. The tremendously escalate of high-quality hydrogen urge the development of membrane technology for hydrogen separation that believe have high potential and advantages compare to the conventional hydrogen separation technique. In correlation, the growing of research field like chemical and material sciences, membrane sciences and technology, and advance membrane technology over the decade provides important information on the membrane technology for hydrogen separation. Moreover, the present review was set up as the preliminary study and guidance for the future research and development of membrane materials and membranes for hydrogen purification, and hence promote the development of sustainable and clean hydrogen energy

A critical study of false doctrine, looking into the concept and its punishments under the Syariah Criminal offences enactments in Malaysia / Mohd Efendi Mohd Razali … [et al.]

This research is a critical study on the concept of false doctrine and its punishment under the Syariah Criminal offences Enactments in Malaysia. The research which has been conducted is to show that the punishment for a person committing a deviant teaching or in law which has been defined as a false doctrine is inadequate enough since the act committed can be categorized as one of the big sin in the Quran. In addition, this research is more focusing on the punishment of false doctrine and we have set out the provisions which relating to the punishment of false doctrine from different states in Malaysia in order to compare whether the punishment for false doctrine is adequate enough or otherwise in term of it substantive law, wording, uniformity and workability. This study also concerns on how effectiveness the punishment of false doctrine provided by the Syariah law criminal offences enactment, hence, we found that the punishment that were imposed is to be said inadequate and a person who commits a false doctrine should not be worried about the punishment as he can afford to pay and bear the burden by all means which they only take for granted towards the punishment and in future they will do the same thing and it goes over and over again. Therefore, this study seek to discover the concept of false doctrine in Malaysia and also the punishment that have been imposed to it

Evaluation of End-user Satisfaction among Employees Participating in a Web-based Needs Assessment Inventory

AbstractThis paper reports on the end-user satisfaction evaluation of ENAI. It highlights the positive impact and effect of online web- based management system for counseling inventory. Participants have reported satisfaction with ENAI and the service impact within community of users is complementary. Improvement of ENAI can be made to enhance the end-user satisfaction by referring to the user's requirements

Effect of plasticizers on the properties of sugar palm nanocellulose/cinnamon essential oil reinforced starch bionanocomposite films

This work examines the effects of plasticizer type and concentration on mechanical, physical, and antibacterial characteristics of sugar palm nanocellulose/sugar palm starch (SPS)/cinnamon essential oil bionanocomposite films. In this research, the preparation of SPS films were conducted using glycerol (G), sorbitol (S), and their blend (GS) as plasticizers at ratios of 1.5, 3.0, and 4.5 wt%. The bionanocomposite films were developed by the solution casting method. Plasticizer Plasticizers were added to the SPS film-forming solutions to help overcome the fragile and brittle nature of the unplasticized SPS films. Increasing plasticizer contents resulted in an increase in film thickness and moisture contents. On the contrary, the increase in plasticizer concentrations resulted in the decrease of the densities of the plasticized films. The increase in the plasticizer content from 1.5 to 4.5% revealed less influence towards the moisture content of S-plasticised films. For glycerol and glycerol-sorbitol plasticized (G and GS) films, higher moisture content was observed compared to S-plasticised films. Various plasticizer types did not significantly modify the antibacterial activity of bionanocomposite films. The findings of this study showed significant improvement in the properties of bionanocomposite films with different types and concentrations of plasticizers and their potential for food packaging applications was enhanced

Dip-coating methods for carbon membrane fabrication: Effects of coating-carbonization-cycles on Hydrogen separation prepared from BTDA-TDI/MDI (P-84) polyimide blends with Nanocrystalline cellulose (NCC)

In this paper depicts the manufacture and assessment of tubular carbon membrane equipped from BTDA-TDI/MDI (P-84) polyimide mixes with Nanocrystalline cellulose (NCC). Given earlier investigations, we planned the theory that tubular carbon membrane performance could impose constraints by controlling the carbonization conditions which directed with a heating rate of 3°C/min, a final temperature of 800°C and adjustment time of 300°C. The principal purpose of this examination is to acquaint successful dip-coating strategies with produce superior tubular carbon membrane. The coating-carbonization cycles (1, 2, 3, and 4 times) have been considered. This methodology empowers quick and straightforward assessment of dip-coating techniques to yields high separation performance. Gas separation performance of the carbon membranes was adequately carried out by a single gas permeation experiment of H2, and N2 to explore the transport component in the carbon membrane separation process. In this case, the most elevated selectivity of 434.68±1.39 for H2/N2; side by side with H2 permeance of 1399.66±5.22 GPU shall accomplish by employing two coating-carbonization-cycles