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Carbon dioxide adsorption on eaf steel slag derived adsorbent

Carbon dioxide adsorption on eaf steel slag derived adsorbent / Kuak Li Ming
Objektif kajian ini ialah menyediakan penjerap yang diperolehi daripada sanga keluli eklektik relau arka ( PJSKERA), mengenalpasti kumpulan befungsi pada penjerap dan mendapat prestasi penjerap dengan mengguna pelbagai keadaan operasi seperti kepekatan asal CO2, suhu penjerapan, kadar aliran gas dan muatan penjerap. PJSKERA telah disediakan dengan dua langkah. Langkah pertama ialah pengaktifan dengan natrium hidroksida dan diikuti pengurusan hidroterma. Kumpulan berfungsi pada penjerap yang disediakan telah didapati daripada FTIR. Penjerapan karbon dioksida telah dijalankan dalam system penjerapan lapisan tetap dengan penganalisis karbon dioksida dalam masa nyata untuk menentukan kepekatan karbon dioksida dalam gas keluar. Kesan-kesan keadaan operasi seperti kepekatan asal CO2 (10 % -20 %), suhu penjerapan (30 oC -50 °C), kadar aliran gas (30 ml/min - 70 ml/min), dan muatan penjerap (1 g, 2 g, 3 g) telah dikaji. Kapasiti penjerapan tertinggi dalam kajian ini adalah 72.41 mg/g, telah diperolehi dengan menggunakan kadar aliran gas 30 mL/min, suhu penjerapan 30 °C,10% kepekatan asal CO2. dan 1g muatan penjerap. Kesimpulannya, keadaan operasi yang sesuai untuk penjerapan menggunakan PJSKERA ialah kepekatam asal CO2 yang tinggi, suhu penjerapan yang rendah, kadar aliran gas yang rendah dan muatan penjerapan yang rendah. _______________________________________________________________________________________________________ The objectives of this study are to synthesis EAF steel slag derived adsorbent for CO2 adsorption, to identify the surface functional group of prepared adsorbent by Fourier transform infrared spectroscopy (FTIR) technique and to investigate the adsorption performance of prepared adsorbent by using different parameters, initial CO2 concentration, temperature, gas flow rate and adsorbent loading. The electric arc furnace (EAF) steel slag derived adsorbent (EAFSSAD) is prepared in two steps, NaOH activation and followed by hydrothermal treatment. The functional groups of the prepared adsorbents were characterized by FTIR. The adsorption of carbon dioxide was carried out in a fixed bed adsorption system with an online carbon dioxide analyzer to determine the concentration of carbon dioxide in the outlet gas. The effect of operating conditions such as initial CO2 concentration (10 % - 20 %), adsorption temperature (30 °C -50 °C), gas flow rate (30 ml/min -70 mL/min) and adsorbent loading (1 g to 3 g) were studied. The highest bed adsorption capacity of EAFSSAD in this study is 72.41 mg/g with operating condition of 30 ml/min gas flow rate, 30 oC adsorption temperature, 10% initial CO2 concentration and 1.0g adsorbent loading. In a conclusion, the suitable operating condition for adsorption of CO2 on EAFSSAD is high initial CO2 concentration, low gas flow rate, low adsorption temperature and low adsorbent loading.
Contributor(s):
Kuak Li Ming - Author
Primary Item Type:
Final Year Project
Identifiers:
Barcode : 00003107144
Accession Number : 875007264
Language:
English
Subject Keywords:
EAF steel slag derived; CO2 adsorption; hydrothermal treatment
First presented to the public:
6/1/2017
Original Publication Date:
4/24/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Chemical Engineering
Citation:
Extents:
Number of Pages - 59
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-04-24 12:01:39.252
Date Last Updated
2019-01-07 11:24:32.9118
Submitter:
Mohd Jasnizam Mohd Salleh

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