The optimization of heating temperature for carbon extraction from peat soil

International Nuclear Science, Technology and Engineering Conference 2017

原子能学

Jamien, Fahrulrazi Md^1 ; Embong, Zaidi^1,2 ; Ahmad Tajudin, Saiful Azhar^1,3 ; Ahmad, Salawati^4 ; Lazim, Azwan Mat^5

Faculty of Applied Science and Technology, Universiti Tun Hussein Onn Malaysia, Pagoh Education Hub, KM 1 Jalan Panchor, Muar, Johor

86400, Malaysia^1

Research Centre for Soft Soil (RECESS), Office for Research Innovation, Commercialization and Consultancy Management (ORICC), Universiti Tun Hussein Onn Malaysia, Malaysia^2

Faculty of Civil and Environment Engineering, Universiti Tun Hussein Onn Malaysia, Malaysia^3

Centre for Language Studies, Universiti Tun Hussein Onn Malaysia, Malaysia^4

School of Chemical Sciences and Food Technology, Universiti Kebangsaan Malaysia, Malaysia^5

关键词: Atomic percentage;    Diamond structures;    Energy dispersive X ray analyzer;    Heating temperatures;    Optimum heating;    Peak position;    Raman shift;    Sample surface;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/298/1/012019/pdf
DOI  :  10.1088/1757-899X/298/1/012019

来源: IOP

【 摘 要 】

This study aims to find the optimised heating temperature for carbon extraction from peat soil. Ccarbon from peat soil was extracted by the pyrolisation process at temperature, T = 200, 300, 400, 500, 600 and 700°C for 5 hours. The carbon, C and silica, Si content extracted from peat soil at various heating temperatures were measured by using an Energy Dispersive X-Ray analyzer (EDX) at 3 points on the sample surface. High atomic percentage of carbon (95.44 %) was measured at T = 400°C, while the highest atomic percentage of silicon was recorded at T = 700°C (30.79 %). The surface morphology of peat soil was analysed using Scanning Electron Microscope (SEM) at 800 magnifying power, and it was clearly seen that peat fragments were pyrolised at high heating temperature with pores enhancement. The molecular structure parameter of the extracted carbon were identified using Laser Raman analysis. The peak positions of D-band and G-band for raw peat soil were observed at Raman shift of 1379.62 and 1549.02 cm-1, respectively. Meanwhile, the D-band for peat soil heated at temperature of 400°C was 1391.56 cm-1whereas the G-band has peak position at 1562.16 cm-1. From the Raman spectra of the optimum heating temperature at 400°C, it was revealed that the carbon molecular structure from the peat soil is mainly attributed by graphite and diamond structure.