TY - JOUR
T1 - A study of upgrading real biogas via CO2 precipitation route under Indian Scenario
AU - Gehlaut, Avneesh Kumar
AU - Gaur, Ankur
AU - Hasan, Shabih Ul
AU - Park, Jin Won
PY - 2018/6
Y1 - 2018/6
N2 - Our study focuses on upgrading real biogas obtained under Indian scenario using carbon capture and utilization (CCU) technology to remove carbon dioxide (CO2) and utilize it by forming metal carbonate. Amines such as monoethanolamine (MEA), diethanolamine (DEA), and sodium hydroxide (NaOH) were used to rapidly convert gaseous CO2 to aqueous CO2, and BaCl2 was used as an additive to react with the aqueous CO2 and rapidly precipitating the aqueous CO2. All experiments were conducted at 25 °C and 1 atm. We analyzed the characteristics of the BaCO3 precipitates using X-ray diffractometry (XRD), scanning electron microscopy - Energy dispersive spectroscopy (SEM-EDS) and Fourier-transform infrared spectroscopy (FT-IR) analyses. The precipitates exhibited witherite morphology confirmed by the XRD results, and FT-IR confirmed that the metal salt formed was BaCO3, and EDS showed that there were no traces of impurities present in it. The quantity of the BaCO3 was larger when formed with DEA. Also, a comparison was done with a previous study of ours conducted in Korean conditions. Finally, we observed that the carbonate obtained using real biogas showed similar properties to carbonates available in the market. An economic analysis was done to show the cost effectiveness of the method employed by us.
AB - Our study focuses on upgrading real biogas obtained under Indian scenario using carbon capture and utilization (CCU) technology to remove carbon dioxide (CO2) and utilize it by forming metal carbonate. Amines such as monoethanolamine (MEA), diethanolamine (DEA), and sodium hydroxide (NaOH) were used to rapidly convert gaseous CO2 to aqueous CO2, and BaCl2 was used as an additive to react with the aqueous CO2 and rapidly precipitating the aqueous CO2. All experiments were conducted at 25 °C and 1 atm. We analyzed the characteristics of the BaCO3 precipitates using X-ray diffractometry (XRD), scanning electron microscopy - Energy dispersive spectroscopy (SEM-EDS) and Fourier-transform infrared spectroscopy (FT-IR) analyses. The precipitates exhibited witherite morphology confirmed by the XRD results, and FT-IR confirmed that the metal salt formed was BaCO3, and EDS showed that there were no traces of impurities present in it. The quantity of the BaCO3 was larger when formed with DEA. Also, a comparison was done with a previous study of ours conducted in Korean conditions. Finally, we observed that the carbonate obtained using real biogas showed similar properties to carbonates available in the market. An economic analysis was done to show the cost effectiveness of the method employed by us.
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U2 - 10.9713/kcer.2018.56.3.381
DO - 10.9713/kcer.2018.56.3.381
M3 - Article
AN - SCOPUS:85047975461
VL - 56
SP - 381
EP - 387
JO - Korean Chemical Engineering Research
JF - Korean Chemical Engineering Research
SN - 0304-128X
IS - 3
ER -