eprintid: 11377
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/13/77
datestamp: 2023-11-10 03:25:53
lastmod: 2023-11-10 03:25:53
status_changed: 2023-11-10 01:15:07
type: article
metadata_visibility: show
creators_name: Mohamed Mohsin, H.
creators_name: Mohd Shariff, A.
creators_name: Johari, K.
title: 3-Dimethylaminopropylamine (DMAPA) mixed with glycine (GLY) as an absorbent for carbon dioxide capture and subsequent utilization
ispublished: pub
keywords: Absorption; Amines; Amino acids; Carbon dioxide; Chemical analysis; Ethanol; Fourier transform infrared spectroscopy; Ship conversion; Solubility; X ray photoelectron spectroscopy, Carbamate; Carbon dioxide capture; Characteristic peaks; Chemical interactions; CO2 loading capacity; Diamine; Optimum concentration; Pressure differential techniques, Loading
note: cited By 20
abstract: 3-dimethylaminopropylamine (DMAPA) and glycine (GLY) mixture was studied as a potential absorbent for carbon dioxide (CO2) capture and utilization. The solubility of CO2 in aqueous GLY-DMAPA solutions within the range of 0.1�2.0 mol/L (M) were measured experimentally using pressure differential technique. Utilization of CO2 was also studied by mixing the CO2-saturated absorbent with ethanol. The final products obtained were characterized by using Fourier transform infrared (FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS). The solubility study revealed that the CO2 loading capacity increased as pressure of CO2 increased. In contrast, the loading capacity decreased when concentration of the absorbent and temperature in equilibrium cell increased. However, the total moles of CO2 absorbed showed an opposite trend such that net CO2 absorbed increased as concentration of absorbent increased. The chemical interactions between CO2 and GLY-DMAPA molecules were studied by analyzing the changes of characteristic peaks observed form the FTIR spectra. For CO2 utilization, the addition of ethanol as a reagent into 0.1 M CO2-saturated GLY-DMAPA solution did not produced any precipitate. Nonetheless, as the concentration of GLY-DMAPA increased from 0.5 M to 2.0 M, white precipitates were produced, indicated that the conversion of CO2 into solid compounds occurred instantaneously after the CO2 capture. The optimum concentration of GLY-DMAPA for CO2 capture and utilization depends on the amount of solids generated and the CO2 loading capacity of the absorbent. At 5 bar, the optimum concentration was found to be 1.0 M with 45 mg/g of solids recovered and CO2 loading capacity of 1.6 mol CO2/mol absorbent. The final product was identified as carbamate salt based on the main characteristic peaks present on the FTIR and XPS spectra. © 2019 Elsevier B.V.
date: 2019
publisher: Elsevier B.V.
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85064312448&doi=10.1016%2fj.seppur.2019.04.029&partnerID=40&md5=5b5b33219eceb6c7d23e770385a401f6
id_number: 10.1016/j.seppur.2019.04.029
full_text_status: none
publication: Separation and Purification Technology
volume: 222
pagerange: 297-308
refereed: TRUE
issn: 13835866
citation:   Mohamed Mohsin, H. and Mohd Shariff, A. and Johari, K.  (2019) 3-Dimethylaminopropylamine (DMAPA) mixed with glycine (GLY) as an absorbent for carbon dioxide capture and subsequent utilization.  Separation and Purification Technology, 222.  pp. 297-308.  ISSN 13835866