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We analyzed the integrated CO 2 absorption/u2013desorption process using N-methyldiethanolamine as the standard and an amine absorbent after adding different metal oxides to investigate the effect of the metal oxides on absorbents. We analyzed the effect of the metal oxides on absorbents to determine absorbents' absorbents. The MDEA solution's CO 2 capture by each metal oxide were determined, including CO 2 reaction heat, absorption rate, cyclic loading, and carbon dioxide content. The rise in MgO and CaO absorption rate by MDEA after adding MgO and CaO can be mediated by two separate mechanisms, according to the experimental findings.
Source link: https://doi.org/10.21203/rs.3.rs-1983228/v1
CO2 injection into existing oil fields is a well-known enhanced oil recovery technique. While still achieving carbon sequestration, using CO 2 as a working fluid to recover oil can account for the energy consumption of the capture and transport processes, raising the possibility of CO 2 capture while still achieving carbon sequestration. A complete-chain energy consumption estimation software is developed, and an optimization study of the energy consumption scheme is carried out. From an energy budget standpoint, the oil displacement conversion's energy budget is deconstructed, and the benefits of the water alternating gas method are demonstrated. The benefits of CO 2 -EOR are much greater than other CCUS processes' electricity consumption, according to the report, and CCUS-EOR is a CO 2 utilization method with positive energy savings.
Source link: https://doi.org/10.1007/s43979-022-00031-7
Multiple bonds of various orders within the PyBIGH 2 2+ cation were investigated in the context of an accelerated diffraction study at 20 K. Accurate hydrogen bonds and all intermolecular reactions in the highly insoluble carbonate salt of a 2,6-pyridine-bis, 4, which were first employed in the direct air capture of CO 2 via crystallization. The linking hydrogen bonds are approximately perpendicular to the anion-u2013water ribbons. Hence, all hydrogen bonds have been characterized by the characteristics of their bond defining points. The PyBIGH 2 2+ cations' interactions have been described by Weaker in a similar manner.
Source link: https://doi.org/10.1107/s2052252518014616
Abstract Background The climate change caused by greenhouse gas emissions has become a global hot topic. Clostridium butyricum DL07 proposed a bioprocess for co-production of 1,3-propanediol, biohydrogen, and micro-nano CaCO 3 based on Ca 2 as a CO2 capture agent and pH regulator. In addition, the ratio of H 2 to CO 2 in exhaust gas increased by 152 percent in the 5 M Ca 2 group compared to 5 M NaOH as the CO 2 capture agent. Green hydrogen in exhaust gas ranged from 17. 2% to 20. 2%, with the remainder being N2 with negligible CO 2 emissions. Moreover, the number of soluble salts and proteins in 5 M Ca 2's fermentation broth had significantly reduced by 56% and 41%, respectively, when compared to the 5M NaOH group.
Source link: https://doi.org/10.1186/s13068-022-02190-2
The effect of biomass type and HTC conditions on the yield and stability of artificial humic substances and hydrochar to achieve carbon capture objectives was investigated in this study. The duration and temperature of the therapy, as well as catalyst used and changing the carbonisation conditions, all have a major effect on HTC product yield, making it possible to create the desired mixture of obtained products with a significant effect on the yield. Although hydrochar's carbon dioxide absorption capacity is relatively low, after an initialization of a cost-effective sorbent can be obtained, a potential for carbon capture goals is unclear.
Source link: https://doi.org/10.2478/rtuect-2022-0032
Abstract This paper discusses the manufacture of polyethyleneimine-derived rice husk char / activated carbon nanofiber composites by electrospinning and physical activation techniques, as well as its adsorption performance toward CO 2. The resulting ACNF composite with 1% of GRHC has a smaller average fiber diameter with a narrow surface area of 597 m 2 /g and a V micro of 0. 2606 cm 3 /g, much better than pristine ACNF composites. At atmospheric pressure and 25°C, 142 cm 3 /g at atmospheric pressure and 25°u00b0C, more than those of pristine ACNF/GRHC0. 01 at 69 cm 3 /g. Both amine-impregnated and nonimpregnated GRHC/ACNFs demonstrated the pseudo first-order kinetic model at 1 bar, but the pseudo first-order kinetic model at 15 bar was the most effective; however, the pseudo second-order kinetic model was the best fitted the pseudo second-order kinetic model at 15 bar. Both GRHC/ACNF and PEI-GRHC/ACNF samples followed the Langmuir adsorption isotherm technique, which indicates monolayer adsorption. PEI-GRHC/ACNFs with excellent CO 2 adsorption results were successfully manufactured at the end of this research.
Source link: https://doi.org/10.1515/ntrev-2022-0055
A promising process intensification process for offshore natural gas conditioning, in which weight and footprint constraints impose significant limitations, is a problematic process intensification technique for offshore natural gas conditioning. Water mass transfer; outlet stream temperatures; head-loss; and light hydrocarbon mass transfer are among the topics discussed in this context. None of the few studies focusing on gas-liquid membrane contactor simulation and integration in process simulators published in a completely successful manner, none of them carried out any of the above aspects in a highly effective manner.
Source link: https://doi.org/10.3390/gases2030007
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