DOI: 10.1016/j.jcou.2018.01.001
Scopus记录号: 2-s2.0-85040000412
论文题名: CO2 sequestration by pH-swing mineral carbonation based on HCl/NH4OH system using iron-rich lizardite 1T
作者: Arce Ferrufino G.L.A. ; Okamoto S. ; Dos Santos J.C. ; de Carvalho J.A. ; Jr. ; Avila I. ; Romero Luna C.M. ; Gomes Soares Neto T.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 24 起始页码: 164
结束页码: 173
语种: 英语
英文关键词: Carbonates
; CO2 sequestration
; HCl/NH4OH system
; Lizardite 1T
; Mining waste
; pH-swing mineral carbonation
Scopus关键词: Atmospheric pressure
; Carbon dioxide
; Carbonates
; Carbonation
; Chlorine compounds
; Efficiency
; Iron compounds
; Iron oxides
; Kaolinite
; Lithium compounds
; Magnesite
; Minerals
; Silica
; Silicon compounds
; Solutions
; CO2 sequestration
; HCl/NH4OH system
; Lizardite
; Mineral carbonation
; Mining waste
; Phosphorus compounds
英文摘要: In pH-swing mineral carbonation, several acid/base systems has been investigated. Currently the main acid/base systems employed are HCl/NaOH and NH4HSO4/NH4OH. However, the use of a HCl/NH4OH system was not yet elucidated. This study proposes to evaluate the feasibility of a pH-swing mineral carbonation based on HCl/NH4OH system at atmospheric pressure and moderate temperatures using mining waste from asbestos production from Goiás State, Brazil (S-GO) for two conditions (i.e. stoichiometric conditions (T2E) and acid excess (T2)). Results indicated that the Fe3+ content in S-GO acted as a catalyst, due to FeCl3 hydrolysis in aqueous solutions. Thus, high Mg and Fe extraction efficiency (95 ± 2%), were achieved in the leaching stage for both conditions. The S1 solid residue was mainly SiO2 with 90 ± 1% purity content. In the purification stage 91.7 ± 1.9% of Fet were removed, however, a loss of Mg of 13.6 ± 2.3% was also detected. On the carbonation stage, high purity hydromagnesite was formed in T2E; this stage had a 85% efficiency, thus, 36.7% of CO2 was fixed. On T2, excess H2O and CO2 promoted dypingite formation and reduced hydromagnesite formation. After carbonation, the formation of crystals was observed in the NH4Cl aqueous solution at 25 °C, indicating NH4Cl supersaturation. The results of mass balance indicate that 4 ton of mineral waste will be employed for each ton of captured CO2, as well as 2.6 ton of HCl, and 4.5 ton of NH4OH. However, 1.7 ton of SiO2, 0.55 ton of iron oxides, and 2.7 ton of hydromagnesite could be produced. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111968
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Combustion and Propulsion Associated Laboratory, Brazilian Space Research Institute (LCP/INPE), Brazil; Production Engineering, Campus of Itapeva, São Paulo State University (UNESP), Brazil; Combustion and Carbon Capture Laboratory, Energy Department, Campus of Guaratinguetá, São Paulo State University (LC3/DEN/UNESP), Brazil; Advanced Materials and Nanotechnology Research Group, Faculty of Chemical and Metallurgical Engineering, Jose Faustino Sanchez Carrion National University (UNJFSC), Huacho, Lima, Peru
Recommended Citation:
Arce Ferrufino G.L.A.,Okamoto S.,Dos Santos J.C.,et al. CO2 sequestration by pH-swing mineral carbonation based on HCl/NH4OH system using iron-rich lizardite 1T[J]. Journal of CO2 Utilization,2018-01-01,24