Faizul Che Pa
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Preferred name
Faizul Che Pa
Official Name
Faizul, Che Pa
Alternative Name
Che Pa, Faizul
Faizul, C. P.
Main Affiliation
Scopus Author ID
55561986800
Researcher ID
AGP-6391-2022

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  • Publication
    Phase transformation of Kaolin-Ground Granulated Blast Furnace Slag from geopolymerization to sintering process
    ( 2021)
    Noorina Hidayu Jamil
    ;
    Mohd. Mustafa Al Bakri Abdullah
    ;
    Faizul Che Pa
    ;
    Mohamad Hasmaliza
    ;
    Wan Mohd Arif W Ibrahim
    ;
    Ikmal Hakem A. Aziz
    ;
    Bartłomiej Jeż
    ;
    Marcin Nabiałek
    The main objective of this research was to investigate the influence of curing temperature on the phase transformation, mechanical properties, and microstructure of the as-cured and sintered kaolin-ground granulated blast furnace slag (GGBS) geopolymer. The curing temperature was varied, giving four different conditions; namely: Room temperature, 40, 60, and 80 °C. The kaolin-GGBS geopolymer was prepared, with a mixture of NaOH (8 M) and sodium silicate. The samples were cured for 14 days and sintered afterwards using the same sintering profile for all of the samples. The sintered kaolin-GGBS geopolymer that underwent the curing process at the temperature of 60 °C featured the highest strength value: 8.90 MPa, and a densified microstructure, compared with the other samples. The contribution of the Na2O in the geopolymerization process was as a self-fluxing agent for the production of the geopolymer ceramic at low temperatures.
  • Publication
    Influences of SiO2, Al2O3, CaO and MgO in phase transformation of sintered kaolin-ground granulated blast furnace slag geopolymer
    ( 2020-01-01)
    Jamil N.H.
    ;
    Mohd. Mustafa Al Bakri Abdullah
    ;
    Faizul Che Pa
    ;
    Mohamad H.
    ;
    Wan Mohd Arif W Ibrahim
    ;
    Chaiprapa J.
    Kaolin has an excellent structure formed via a wide range of firing temperature. The correlation between the mineralogy and reactivity of individual elements is extremely complex in a sintered geopolymer material. The main objective of this work is to elucidate the influence of the chemical composition of the raw materials used post-sintering on the kaolin-ground granulated blast furnace slag (GGBS) geopolymer. The samples were cured at room temperature for 5 days before being sintered. The ratio of solid-to-liquid were 1:1, 1.5:1, and 2:1. The addition of the GGBS to the kaolin geopolymer slurry did not only hasten the hardening process during geopolymerization, the presence of SiO2, Al2O3, CaO, and MgO in GGBS had accelerated the formation of nepheline, gehlenite, akermanite, and albite phase after sintering based on the result from x-ray diffraction and fourier-transform infrared spectroscopy On top of the phase transformation, a high ratio of solid-to-liquid (SL 2) had improved the pore distribution from irregular size to well defined formation and increased the densification of the sintered materials. Elemental distribution from micro-XRF investigation prove the high concentration of Ca in localized area and uniformly distribution of Si aligned with the phase of akermanite in SL 2. The main chemical composition of kaolin and GGBS which are SiO2, Al2O3, CaO and MgO had contributed in phase transformation of sintered kaolin-GGBS geopolymer.
  • Publication
    Overview of activated carbon derived from biomass for heavy metal removal
    (AIP Publishing, 2020)
    Z. Nur Aimi Nadhirah
    ;
    M. Rabiatul Manisah
    ;
    Norizah Abd Karim
    ;
    Faizul Che Pa
    Discharge of industrial wastewater containing heavy metals has resulted in serious problems thus effective solution to prevent such pollution is vitally needed. Adsorption technique is a popular method wastewater treatment and studies are focusing on the development of alternative activated carbons derived from biomass as alternative adsorbent with low cost, abundantly available and environment friendly. This paper goes through the treatment of biomass as activated carbon and its application in reducing heavy metals in wastewater. Such technology will reduce the cost of activated carbon production and the cost of biomass disposal as well.
  • Publication
    Logam ferus
    ( 2011)
    Murizam Darus
    ;
    Faizul Che Pa
    ;
    Ruhiyuddin Mohd Zaki
    ;
    Mohd Arif Anuar Mohd Salleh
    Logam ferus adalah kumpulan logam dengan komposisi utamanya terdiri daripada bahan logam besi. Pengetahuan berkaitan bahan ini dapat membantu kita menghasilkan produk yang lebih berkualiti serta mengoptimakan penggunaan bahan ferus dengan lebih cekap. Bab pertama menjelaskan berkenaan logam ferus secara umum, proses penghasilan logam ferus serta piawai yang menjadi rujukan utama industri berkaitan. Bab kedua buku ini pula memberikan fokus kepada sifat-sifat logam ferus serta peranan utama bahan karbon dalam penghasilan keluli. Jenis-jenis keluli yang utama pula dijelaskan dalam bab tiga. Manakala bahagian terakhir menjelaskan proses-proses yang berkaitan dengan penghasilan produk daripada bahan logam ferus.
      52  392
  • Publication
    Logam bukan ferus
    ( 2012)
    Ruhiyuddin Mohd Zaki
    ;
    Faizul Che Pa
    ;
    Murizam Darus
    ;
    Mohd Arif Anuar Mohd Salleh
    Umum mengetahui kepentingan bahan logam dalam kehidupan manusia seharian. Walaubagaimanapun, tidak ramai yang mempunyai pemahaman jelas berkaitan dengan bahan ini. Situasi ini mengilhamkan para penulis untuk menghasilkan buku Logam Bukan Ferus ini. Bab pertama menjelaskan berkenaan logam bukan ferus secara umum, pola penggunaan logam bukan ferus serta masa depan logam bukan ferus ini. Bab-bab lain pula memberikan fokus kepada beberapa jenis bahan bukan ferus secara spesifik seperti aluminium, zink, plumbum, kuprum, logam refraktori dan logam berharga.
      18  137
  • Publication
    Phase transformation of Kaolin-ground granulated blast furnace slag from geopolymerization to sintering process
    ( 2021-03-01)
    Noorina Hidayu Jamil
    ;
    Mohd. Mustafa Al Bakri Abdullah
    ;
    Faizul Che Pa
    ;
    Hasmaliza M.
    ;
    Wan Mohd Arif W Ibrahim
    ;
    Aziz I.H.A.
    ;
    Jeż B.
    ;
    Nabiałek M.
    The main objective of this research was to investigate the influence of curing temperature on the phase transformation, mechanical properties, and microstructure of the as-cured and sintered kaolin-ground granulated blast furnace slag (GGBS) geopolymer. The curing temperature was varied, giving four different conditions; namely: Room temperature, 40, 60, and 80â—¦ C. The kaolin-GGBS geopolymer was prepared, with a mixture of NaOH (8 M) and sodium silicate. The samples were cured for 14 days and sintered afterwards using the same sintering profile for all of the samples. The sintered kaolin-GGBS geopolymer that underwent the curing process at the temperature of 60â—¦ C featured the highest strength value: 8.90 MPa, and a densified microstructure, compared with the other samples. The contribution of the Na2 O in the geopolymerization process was as a self-fluxing agent for the production of the geopolymer ceramic at low temperatures.
      2
  • Publication
    Self-Fluxing mechanism in geopolymerization for Low-Sintering temperature of ceramic
    ( 2021)
    Noorina Hidayu Jamil
    ;
    Mohd. Mustafa Al Bakri Abdullah
    ;
    Faizul Che Pa
    ;
    Hasmaliza Mohamad
    ;
    Wan Mohd Arif W Ibrahim
    ;
    Penphitcha Amonpattaratkit
    ;
    Joanna Gondro
    ;
    Wojciech Sochacki
    ;
    Norfadhilah Ibrahim
    Kaolin, theoretically known as having low reactivity during geopolymerization, was used as a source of aluminosilicate materials in this study. Due to this concern, it is challenging to directly produce kaolin geopolymers without pre-treatment. The addition of ground granulated blast furnace slag (GGBS) accelerated the geopolymerization process. Kaolin–GGBS geopolymer ceramic was prepared at a low sintering temperature due to the reaction of the chemical composition during the initial stage of geopolymerization. The objective of this work was to study the influence of the chemical composition towards sintering temperature of sintered kaolin–GGBS geopolymer. Kaolin–GGBS geopolymer was prepared with a ratio of solid to liquid 2:1 and cured at 60 °C for 14 days. The cured geopolymer was sintered at different temperatures: 800, 900, 1000, and 1100 °C. Sintering at 900 °C resulted in the highest compressive strength due to the formation of densified microstructure, while higher sintering temperature led to the formation of interconnected pores. The difference in the X-ray absorption near edge structure (XANES) spectra was related to the phases obtained from the X-ray diffraction analysis, such as akermanite and anothite. Thermal analysis indicated the stability of sintered kaolin–GGBS geopolymer when exposed to 1100 °C, proving that kaolin can be directly used without heat treatment in geopolymers. The geopolymerization process facilitates the stability of cured samples when directly sintered, as well as plays a significant role as a self-fluxing agent to reduce the sintering temperature when producing sintered kaolin–GGBS geopolymers.
      2  7
  • Publication
    Preparation & characterization of biochar from rice husk by pyrolysis method
    ( 2024-12)
    Faizul Che Pa
    ;
    Nur Nuha Ulya Norazman
    ;
    Ruhiyuddin Mohd Zaki
    In nations where rice cultivation is prevalent, the responsible management of substantial quantities of rice waste is necessary to mitigate potential environmental concerns. This study aims to produce biochar from rice husks through the pyrolysis method, specifically without using inert nitrogen gas by utilizing a low-oxygen pyrolysis technique. The study employed many experimental parameters, including the process temperature, residence time, and heating rates. The FTIR results revealed a decrease in the stretching of O-H bonds in rice husk biochar at elevated temperatures (500°C), suggesting the degradation and disintegration of cellulose, hemicellulose, and lignin. Various bands associated with hydroxyl, carboxyl, aromatic bonds, amine groups, and other aromatic compounds were observed at lower pyrolysis temperatures. The observed functional group in rice husk biochar closely resembles the outcomes obtained from commercial biochar, except for the absence of C=O stretching. It was seen that the biochar structure exhibited an increase in pore size with increasing temperature. At higher temperatures, a decrease in pore size was observed on the surface of the biochar. It has been observed that when subjected to elevated pyrolysis temperatures, commercial biochar has a greater pore size compared to rice husk biochar, albeit fewer in number than the latter. Based on the findings, it can be inferred that the most favourable conditions for the rice husk biochar production by the low oxygen pyrolysis method are attained at temperatures of 300°C for durations of 60 and 90 minutes, as well as at 400°C for 90 minutes.
      1  8
  • Publication
    Citric acid leaching process for silica extracted from oil palm ash for zeolite synthesis
    ( 2017)
    Faizul Che Pa
    Agricultural wastes such as oil palm ash have a possibility to be utilized as a useful renewable source for production of energy and silica (SiO2). Extensive researches have been carried out to extract silica from agricultural wastes, due to silica as a useful raw material for industrial application. Oil palm ash is one of the waste material from the palm oil industry where is was obtained from the burning process of solid waste such as empty fruit bunch, shell and fiber. Oil palm ash contains a large amount of silica. This study has been conducted to extract silica from palm ash by removing impurities using citric acid via leaching process. Various experimental parameters, such as acid concentration (1 to 6 %), reaction time (30 to 180 minutes), leaching temperature (30 to 90 C) and solid/liquid ratio (1:50 – 1:10) were investigated. Then, the effect of each parameter towards extraction process was evaluated using XRF, FTIR, XRD and SEM. The optimum extracting condition was achieved at 3% concentration of citric acid, 70C of solution temperature, 60 minutes of reaction time and 1:25 ratio of solid/liquid. XRF results show that the content of silica in treated palm ash can reach up to 92% after citric acid leaching treatment. The transmittance peaks at 798 - 778 cm-1 show that silica element is absent in the treated palm ash. Preliminary tests have shown that there is a possibility of using silica extracted from palm ash to synthesize zeolite.
      2  15