Co-liquefaction of low rank Malaysian coal and Palm Kernel Shell — The effect of temperature

Author(s):  
Mohd Fauzi Abdullah ◽  
Zaidi Ab Ghani ◽  
Mohd Azlan Mohd Ishak ◽  
Khudzir Ismail
Author(s):  
Deana Qarizada ◽  
Erfan Mohammadian ◽  
Azil Bahari Alias ◽  
Humapar Azhar Rahimi ◽  
Suriatie Binti Mat Yusuf

Distillation is an essential thermo chemical process; it mainly depends on temperature which affects mostly the product yield and composition. The aim of this research is to investigate the effect of temperature on the characterization of bio-oil liquid fraction derived from palm kernel shell (PKS) bio-oil. The temperatures were 100 °C and 140°C. The higher heating value (HHV) obtained were 28.6MJ/Kg and 31.5MJ/Kg for bio-oil fraction 100°C and 140°C respectively. The GC- MS analysis determined that phenol is the dominant product in bio-oil fractions.


2012 ◽  
Vol 626 ◽  
pp. 615-619 ◽  
Author(s):  
B.Y. Lim ◽  
Salmah Husseinsyah ◽  
Pei Leng Teh

The rheological properties of the low density polyethylene (LDPE)/palm kernel shell (PKS) composites were studied by using a melt flow indexer. The silane treated and untreated composites were investigated. Both of the composites were further varied by amount of filler loading from 10 to 40 php. The testing temperature of composites varied from 180 to 210 °. It was found out that the MFI values of the composites increased with temperature but decreased with a rise of filler loading. The treated LDPE/PKS composites exhibited lower MFI values compared to untreated composites, which indicated the increase of viscosity. Thus, a better adhesion between the LDPE matrix and PKS was established. The effect of temperature on the viscosity of LDPE/PKS composites was found to obey the Arrhenius equation. The results showed that the activation energy of the composites increased with the increase of filler loading. However, at similar filler loading, the silane treated composites showed lower activation energy compared to untreated composites, leading to the reduction of their temperature sensitivity.


2014 ◽  
Vol 625 ◽  
pp. 616-619
Author(s):  
Ali Norizan ◽  
Yoshimitsu Uemura ◽  
Hafizah Ahmad Afif ◽  
Noridah Osman ◽  
Wissam N. Omar ◽  
...  

This study investigates the effect of pyrolysis temperature on the yields of char, organic compounds, water and gas. Fast pyrolysis was carried out in a fluidized bed reactor of 108 mm in internal diameter operated at 400, 450, 500 and 550 °C with nitrogen gas with flow rate of 25 L(NTP)/min. In specific the effect of temperature on the yields of known and unknown organics in bio-oil is discussed. For higher total organics, 500 oC was favorable. But higher phenol and acetic acid yields, 450 oC was preferable. The major organics include acetic acid, phenol and furfural. The minor ones include 2-methylphenol, 4-methylphenol, 4-methylnaphthalene, benzene, toluene and THF.


Konversi ◽  
2021 ◽  
Vol 10 (2) ◽  
Author(s):  
Rinny Jelita ◽  
Jefriadi Jefriadi ◽  
Muhammad Jauhar Mahdi ◽  
Muhammad Hafiz

Adanya isu krisis energi dan masalah lingkungan akibat limbah mendorong terciptanya bahan bakar baru dari bahan terbarukan seperti limbah biomassa cangkang kelapa sawit (CKS). Di sisi lain, batubara kualitas rendah (lignit) memiliki nilai ekonomi yang rendah sehingga perlu ditingkatkan agar dapat digunakan lebih luas. Pemanfaatan lignit dan CKS dapat menghasilkan produk padat (char) berupa batubara hibrida melalui proses co-pyrolysis.  Penelitian ini bertujuan menentukan temperatur dan komposisi optimum co-pyrolysis lignit dan CKS berdasarkan distribusi produk yang dihasilkan. Lignit dikeringkan dan dihaluskan hingga ukuran partikel 20-50 mesh. CKS dibersihkan, dipotong-potong dan diayak hingga berukuran 0,4-2 mm. Selanjutnya CKS dikeringkan menggunakan oven pada 105oC selama 24 jam. Lignit dan CKS dicampur dengan komposisi 15%, 22,5%, dan 30% berat CKS:lignit. Campuran bahan dimasukkan ke dalam reaktor co-pyrolysis sebanyak 200 gram. Proses co-pyrolysis dijalankan pada suhu 200ºC, 300ºC, dan 400ºC selama 1 jam dengan mengalirkan gas nitrogen ke dalam reaktor dengan kecepatan alir 1,5 L/menit. Hasil penelitian menunjukkan peningkatan rasio pencampuran CKS:lignit dan temperatur co-pyrolysis akan meningkatkan yield tar sementara yield char menurun. Ditinjau dari yield tar terbesar, temperatur optimum co-pyrolysis adalah 400oC pada rasio pencampuran optimum 15%, sedangkan 200oC dan 22,5% merupakan temperatur co-pyrolysis dan rasio pencampuran optimum untuk memperoleh yield char terbesar. Baik tar dan char produk co-pyrolysis ini dapat menjadi salah satu sumber energi alternatif dengan pengolahan lebih lanjut. Kata kunci: batubara hibrida, cangkang kelapa sawit, lignit, co-pyrolysis


2020 ◽  
Vol 17 (2) ◽  
pp. 45
Author(s):  
Sylbialin Amin ◽  
Robert Thomas Bachmann ◽  
Soon Kong Yong

Oil palm plantations produce palm kernel shell (PKS) that can be converted into biochar for environment-friendly soil remediation and water treatment. Oxidation with hydrogen peroxide (H2O2) may enhance surface characteristics and the quality of low-rank PKS biochar as a sorbent for environmental decontamination. This study aims to determine the effect of oxidation on the surface characteristics (i.e., specific surface area, surface charge, and chemical properties) of PKS biochar, and compared with that of PKS activated carbon. The surface area for the oxidised PKS biochar was similar to that of PKS biochar, indicating that oxidation did not remove the pore blocking material from the surface area of the PKS biochar. However, oxidation has increased the amount of negatively charged oxygen functional groups in PKS biochar, as indicated by the analyses of the Fourier transform infrared spectroscopy (FTIR) and cation exchange capacity (CEC). The CEC value of raw and activated PKS biochar were similar and 4.6 and 2.6 times lower for PKS biochar and oxidised PKS biochar, respectively. Oxidation caused enlargement of pores on PKS biochar and caused a reduction of specific surface area. More research is required to establish the process conditions to create a greater surface area and sorption capacity.


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