Che Mohd Ruzaidi Ghazali
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Che Mohd Ruzaidi Ghazali
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Che Mohd Ruzaidi, Ghazali
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Ruzaidi, C. M.
Ruzaidi, Ghazali Che Mohd
Mohd Ruzaidi, Che
Ruzaidi, Ghazali
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15760587000

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Effect of soaking time towards graphitization of empty fruit bunch (EFB) waste

2023 , Norizah Abd Karim , Che Mohd Ruzaidi Ghazali , Muhammad Mahyiddin Ramli , Marniati , Zulfadhli, M. R.M. , Mutiawati

Empty fruit bunch (EFB) are the second-highest waste produced in the oil palm industry which is 18 022 tonnes in a year. However, the presence of oil palm waste especially from empty fruit bunch (EFB) give a major problem to the disposal. Herein, EFB waste has been identified as a potential carbon source for synthetic graphite production. This is due to implement the lower heating temperature of synthetic graphite produced in controlled heating conditions. Several parameters have been manipulated to study the effect of various parameters on the graphitization process. Hence, in this study, the effect of soaking time towards graphitization of empty fruit bunch (EFB) waste has been investigated. EFB waste was heat treated with various soaking times which is 2 hours, 2.5 hours and 3 hours in controlled heating conditions with constant heating temperature at 500°C and heating rate at 10°/minute After heating treatment, the samples were characterized using X-ray Diffraction (XRD) and analyzed by X'Pert Highscore Plus software. The functional group of synthetic graphite was determined by using Fourier Transform Infrared spectroscopy (FTIR). The morphological study was carried out by using Scanning Electron Microscope (SEM). From the analysis, the best synthetic graphite produced is at the 2.5 hours soaking time with a constant heating temperature at 500°C and a constant heating rate at 10°/min.

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Preliminary study on the physical properties of palm ash and PCB waste mixed with phenolic resin

2010-06-09 , Mohd Radzi Ali , Shamsul Baharin Jamaludin , Che Mohd Ruzaidi Ghazali , Nur Hidayah Ahmad Zaidi , Alida Abdullah

Brake pad is widely used in automotive industry and consists of various materials including asbestos which is harmful to the human and its production exceeds 10 or more ingredients. In this work, preliminary investigation on possibility to use combination palm ash and PCB waste was carried out in order to reduce harmful materials in brake pad and pollutions. Characterization of palm ash and PCB was done by using XRF, Malvern Particle size and Scanning Electron Microscopy (SEM). The composition palm ash and PCB waste was prepared by pre-mix the palm ash, PCB waste and aluminum powder with phenolic resins in ball mill and then compressed at 122 MPa. Samples were cured at temperature 150°C for 5 minutes. Microstructure, density and porosity, water absorption and compressive test were carried out on the specimens.

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Effect of winding speed in epoxy glass composites for new fabricated filament winding machin

2020-11-02 , Mohammad Firdaus Abu Hashim , Che Mohd Ruzaidi Ghazali , Yusrina Mat Daud , Farah Farhana Zainal , Meor Ahmad Faris Meor Ahmad Tajudin , Si H.M. , Si H.S. , Razani, Mohamad Syazwan Mohamad

The production of the glass fiber reinforced epoxy pipes is produced by filament winding process due to of its low costs, convenient and easy to install. The main objectives of this research is to optimize new fabricated filament winding machine and investigate the effect of winding speed. The problems for a new fabricated filament winding machine that must be optimized at first and lack of data for parameter in winding speed. The production by using filament winding process can be produce varieties of products such as tanks, pipes and vessels. The production of glass reinforced epoxy pipes of filament winding process was used different of winding speed levels. The new fabricated filament winding machine have 6 different winding speed that must be tested to get the optimum mechanical strength results. The process was stopped when the thickness of the samples is about 5.5mm wall thickness. The samples were tested with density for physical test and compressive strength for mechanical testing. The optimum winding speed to produce high mechanical strength for this new fabricated filament winding machine is winding speed two and the angle of the winding for speed 2 is 55°. This study, helps to determine winding speed for calibrate new filament winding.

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Optimization of soaking time for graphitization of oil palm trunk waste

2023 , Norizah Abd Karim , Muhammad Mahyiddin Ramli , Che Mohd Ruzaidi Ghazali , H. S. S. A. Syed , R. M. S. Syah

Synthetic graphite was synthesized from oil palm trunk chip in controlled heating condition or pyrolysis process. The soaking time was varied in the range of 2.5 hours, 3 hours, and 3.5 hours. While the heating rate and heating temperature was constant at 20 °/min and 500°C accordingly. After heat treatment process, the samples were characterized by X-Ray Diffraction (XRD) and analyzed using X'Pert Highscore Plus software. Synthetic graphite phase was analyzed by XRD and it was further supported by Fourier Transform Infrared (FTIR) Spectroscopy analysis to verify existence of functional group. The morphological study was carried out by using Scanning Electron Microscope (SEM). Based on the analysis, it was confirmed that synthetic graphite was successfully synthesized at 3hours soaking time with 500 °C and 20 °/min heating rate. Synthetic graphite was observed in the form of amorphous carbon based on the XRD diffraction pattern that match with the reference code of 00-041-1487.

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The properties of crumb rubber loading on fly ash based geopolymer mortar

2023 , Reshikesan Ravi , Ahmad Azrem Azmi , Mohd. Mustafa Al Bakri Abdullah , Lokman Hakim Ibrahim , Romisuhani Ahmad , Che Mohd Ruzaidi Ghazali

By replacing traditional Portland cement (OPC) with crumb rubber in fly ash-based geopolymer mortar, waste tyre disposal and natural mineral aggregate use can be reduced, resulting in lower CO2 emissions. Crumb rubber geopolymer mortar is formed when sodium hydroxide (NaOH) and sodium silicate (Na2SiO3) are mixed with fly ash (class F) to make aluminosilicate gel. All of the fly ash geopolymer preparations followed the same ratio of solid to liquid (2:1) and the same ratio of NaOH solution (12M) to Na2SiO3 solution (2.5). Different amounts of crumb rubber (0%, 5%, 10%, 15%, and 20% by weight of solid) were added to the mixture. The results show that the compressive strength of the geopolymer mortar decreased with increasing crumb rubber loading. The results of the analysis show that the compressive strengths of CR-0%, CR-5%, CR-10%, CR-15%, and CR-20% are 25,59,14,31,11.19,10.38, and 8.16 MPa. The strength is diminished because of inadequate interfacial adhesion between the crumb rubber and geopolymer paste. As the sample weight fell, the percentage of crumb rubber in the geopolymer mortar in-creased, but the density decreased.

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Interaction of Geopolymer Filler and Alkali Molarity Concentration towards the Fire Properties of Glass-Reinforced Epoxy Composites Fabricated Using Filament Winding Technique

2022-09-01 , Mohammad Firdaus Abu Hashim , Meor Ahmad Faris Meor Ahmad Tajudin , Mydin M.A.O. , Che Mohd Ruzaidi Ghazali , Yusrina Mat Daud , Mohd. Mustafa Al Bakri Abdullah , Farah Farhana Zainal , Saloma , Muhammad Faheem Mohd. Tahir , Heah Cheng Yong , Khorami M.

This paper aims to find out the effect of different weight percentages of geopolymer filler in glass-reinforced epoxy pipe, and which can achieve the best mechanical properties and adhesion between high calcium pozzolanic-based geopolymer matrices. Different weight percentages and molarities of epoxy hardener resin and high calcium pozzolanic-based geopolymer were injected into the glass fiber. By manually winding filaments, composite samples were produced, and they were then allowed to cure at room temperature. To determine how well the geopolymer matrices adhere to the fiber reinforcement, the microstructure of the composites’ surfaces and perpendicular sections were examined. Maximum values of compressive strength and compressive modulus were 94.64 MPa and 2373.58 MPa, respectively, for the sample with a weight percentage of filler loading of 30 wt% for an alkali concentration of 12 M. This is a relatively wide range of geopolymer weight percentage of filler loading from 10 wt% to 40 wt%, at which we can obtain high compressive properties. By referring to microstructural analysis, adhesion, and interaction of the geopolymer matrix to glass fiber, it shows that the filler is well-dispersed and embedded at the fiber glass, and it was difficult to determine the differences within the range of optimal geopolymer filler content. By determining the optimum weight percent of 30 wt% of geopolymer filler and microstructural analysis, the maximum parameter has been achieved via analysis of high calcium pozzolanic-based geopolymer filler. Fire or elevated temperature represents one of the extreme ambient conditions that any structure may be exposed to during its service life. The heat resistance or thermal analysis between glass-reinforced epoxy (GRE) pipe and glass-reinforced epoxy pipe filled with high calcium pozzolanic-based geopolymer filler was studied by investigating burning tests on the samples, which shows that the addition of high calcium pozzolanic-based geopolymer filler results in a significant reduction of the melted epoxy.

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Mechanical Effect on Different Geopolymer Filler in Glass Reinforced Epoxy Composite

2024-04-19 , Mohammad Firdaus Abu Hashim , Che Mohd Ruzaidi Ghazali , Yusrina Mat Daud , Meor Ahmad Faris Meor Ahmad Tajudin , Mohd. Mustafa Al Bakri Abdullah , Farah Farhana Zainal , Saloma , Sulaiman I.S.

Glass reinforced epoxy are widely known in oil and gas industry as glass reinforced epoxy pipe. However, glass reinforced epoxy has limitation such as demanding careful handling due fabrication, installation and transportation because of brittle nature itself and low compressive strength. The aim of this research is to characterize and study the effect of different geopolymer filler in the glass reinforced epoxy pipe composites. Filament winding method will be used in producing glass reinforced epoxy composite. Samples will be prepared with different weight percentage of geopolymer filler loading and different types of geopolymer filler which is fly ash-based geopolymer and kaolin-based geopolymer with 10wt% - 40wt% of geopolymer filler loading. Microstructure was obtained by using Scanning Electron Microscopy showed spherical shaped of fly ash raw material and plate-like structure for kaolin raw material. After undergoes the mechanical testing involved compressive test, pipe sample of glass reinforced epoxy filled with 20 wt% of fly ash-based geopolymer filler showed the best performances above them all. The compressive strength value was 43.05 MPa. Glass reinforced epoxy composite pipe filled with different geopolymer are not widely used in this research area. Therefore, by using geopolymer as a filler can improve the properties of glass reinforced epoxy composite pipe. Hence, a waste material like geopolymer can reduce the cost of material and improve the environment.

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Poly-ferric sulphate as superior coagulant: a review on preparation methods and properties

2023-09 , Nurul Aqilah Mohamad , Sofiah Hamzah , Nur Hanis Hayati Hairom , Mohd Salleh Amri Zahid , Khairol Annuar Mohd Ali , Che Mohd Ruzaidi Ghazali , Andrei Victor Sandu , Petrica Vizureanu , Mohd. Mustafa Al Bakri Abdullah

Iron-based coagulants are widely used in wastewater treatment due to their high positively charged ion that effectively destabilise colloidal suspension, and thus contribute to the formation of insoluble flocs. Ferric chloride, ferrous sulphate, and poly-ferric sulphate (PFS) are examples of iron-based coagulants that are highly available, and are beneficial in producing denser flocs, thereby improving settling characteristics. This work aims to review the preparation methods of PFS and critically discuss the influence of these methods on the PFS properties and performance as a chemical coagulant for water and wastewater treatment. In polymeric form, PFS is one of the pre-hydrolysing metallic salts with the chemical formula [Fe2(OH) n (SO4)3-n/2] m (where, n < 2, m > 10) and has a dark brownish red colour as well as is more viscous and less corrosive. PFS has an amorphous structure with small traces of crystallinity, containing both hydroxyl and sulphate functional groups. It has been applied in many industries including water or wastewater treatment which is also discussed in this study. It has the ability to remove pollutants contained in water or wastewater, such as turbidity, colour, chemical and biological oxygen demand, phosphorus, and others. This study also provides a review on the combination of PFS with other chemical coagulants or flocculants in the coagulation/flocculation process, and also flocs formed after a more stable treatment process.

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Interaction of geopolymer filler and alkali molarity concentration towards the fire properties of glass-reinforced epoxy composites fabricated using filament winding technique

2022 , Mohammad Firdaus Abu Hashim , Meor Ahmad Faris bin Meor Ahmad Tajudin , Md Azree Othuman Mydin , Che Mohd Ruzaidi Ghazali , Yusrina Mat Daud , Mohd. Mustafa Al Bakri Abdullah , Farah Farhana Zainal , Muhammad Faheem Saloma , Heah Cheng Mohd Tahir , Morteza Yong

This paper aims to find out the effect of different weight percentages of geopolymer filler in glass-reinforced epoxy pipe, and which can achieve the best mechanical properties and adhesion between high calcium pozzolanic-based geopolymer matrices. Different weight percentages and molarities of epoxy hardener resin and high calcium pozzolanic-based geopolymer were injected into the glass fiber. By manually winding filaments, composite samples were produced, and they were then allowed to cure at room temperature. To determine how well the geopolymer matrices adhere to the fiber reinforcement, the microstructure of the composites’ surfaces and perpendicular sections were examined. Maximum values of compressive strength and compressive modulus were 94.64 MPa and 2373.58 MPa, respectively, for the sample with a weight percentage of filler loading of 30 wt% for an alkali concentration of 12 M. This is a relatively wide range of geopolymer weight percentage of filler loading from 10 wt% to 40 wt%, at which we can obtain high compressive properties. By referring to microstructural analysis, adhesion, and interaction of the geopolymer matrix to glass fiber, it shows that the filler is well-dispersed and embedded at the fiber glass, and it was difficult to determine the differences within the range of optimal geopolymer filler content. By determining the optimum weight percent of 30 wt% of geopolymer filler and microstructural analysis, the maximum parameter has been achieved via analysis of high calcium pozzolanic-based geopolymer filler. Fire or elevated temperature represents one of the extreme ambient conditions that any structure may be exposed to during its service life. The heat resistance or thermal analysis between glass-reinforced epoxy (GRE) pipe and glass-reinforced epoxy pipe filled with high calcium pozzolanic-based geopolymer filler was studied by investigating burning tests on the samples, which shows that the addition of high calcium pozzolanic-based geopolymer filler results in a significant reduction of the melted epoxy.

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Epoxy layered-silicates filled with fly ash based geopolymer: Compressive properties

2015-01-01 , Daud Y.M. , Kamarudin Hussin , Che Mohd Ruzaidi Ghazali , Osman A.F. , Mohd. Mustafa Al Bakri Abdullah

The effect of fly ash based geopolymer in epoxy layered silicates nanocomposites was studied using a compressive test. A series of nanocomposites with fly ash based geopolymer 1-7phr content was prepared. Qualitative evaluation of the three-dimensional shape of a fly ash based geopolymer surface and the origin was characterized using scanning electron microscopy. It was found that the addition of fly ash at the beginning with lower content are showing lower compressive strength than nanocomposites without fly ash filled. However, compressive properties suddenly increased at 3phr of fly ash geopolymer content compared to nanocomposites without fly ash. This indicated the blending of fly ash geopolymer in nanocomposites system have the ability for further studies.

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