Results 11 to 20 of about 92,104 (231)

Influences of supercritical carbon dioxide fluid on pore morphology of various rank coals: A review

open access: yesEnergy Exploration & Exploitation, 2020
Supercritical carbon dioxide is known to change the pore structure of coals and thus affect their carbon dioxide sequestration capacity. In this study, supercritical carbon dioxide dependence of pore morphology of coals was reviewed.
Zichao Hu   +3 more
doaj   +1 more source

Extraction of Active Ingredients from Shiraz City Bitter Orange Peel with supercritical carbon dioxide and soxhlet [PDF]

open access: yesشیمی کاربردی روز, 2021
In this study, two methods of soxhlet extraction and supercritical carbon dioxide extraction were used to extract the effective substances in bitter orange peel. In supercritical fluid extraction, the effect of operational parameters such as temperature,
Ali Zarei, Nadia Esfandiari
doaj   +1 more source

Experimental study on supercritical carbon dioxide gasification of biomass

open access: yesCarbon Neutrality, 2023
With the excessive use of fossil energy and concern for environmental protection, biomass gasification as an effective means of biomass energy utilization has received widespread attention worldwide. Supercritical carbon dioxide (SCCO2) (T ≥ 31.26 °C, P ≥
Chenchen Zhou   +4 more
doaj   +1 more source

Techno-Economic Assessment of the Supercritical Carbon Dioxide Enhanced Geothermal Systems [PDF]

open access: yes, 2022
Enhanced geothermal systems distinguish themselves among other technologies that utilize renewable energy sources by their possibility of the partial sequestration of carbon dioxide (CO2).
Andresen, Trond   +8 more
core   +1 more source

A full three‐dimensional fracture propagation model for supercritical carbon dioxide fracturing

open access: yesEnergy Science & Engineering, 2020
Supercritical carbon dioxide fracturing is an environmentally friendly anhydrous method. To study the propagation process during supercritical carbon dioxide fracturing, a full three‐dimensional model, coupled rock deformation, fluid transport, heat ...
Yuting He   +5 more
doaj   +1 more source

Carbon Dioxide, a Solvent and Synthon for Green Chemistry [PDF]

open access: yes, 2005
Carbon dioxide is a renewable resource of carbon when we consider the reuse of existing CO2 as a carbon source for producing chemicals. The development of new applications is of major interest from the point of view of carbon dioxide sequestration and ...
Ballivet-Tkatchenko, D   +2 more
core   +1 more source

Persistent local order heterogeneity in the supercritical carbon dioxide [PDF]

open access: yesJ. Phys. Chem. Lett. 5, 2785-2790 (2014), 2014
The supercritical state is currently viewed as uniform and homogeneous on the pressure-temperature phase diagram in terms of physical properties. Here, we study structural properties of the supercritical carbon dioxide, and discover the existence of persistent medium-range order correlations which make supercritical carbon dioxide non-uniform and ...
arxiv   +1 more source

High-pressure NMR spectroscopy in studies of the conformational composition of small molecules of ibuprofen in supercritical carbon dioxide [PDF]

open access: yes, 2020
An experimental approach in conducting NMR measurements at supercritical parameters of state is discussed. A novel design of the high-pressure NMR cell was developed which allowed eliminating the field inhomogeneity and, thus, increasing the sensitivity of the experiment at the supercritical state.
arxiv   +1 more source

Application of Genetic Algorithm on Model-Based Optimisation of Supercritical Carbon Dioxide Extraction: An Overview

open access: yesChemical Engineering Transactions, 2017
Green supercritical carbon dioxide extraction technology has gained enormous interest especially in the application of extraction of natural products. The use of carbon dioxide as solvent in the extraction process is very advantageous as carbon dioxide ...
M.A. Mohamed Zahari, L.M. Salleh
doaj   +1 more source

Experimental Study on Prototype of Printed Circuit Heat Exchanger

open access: yesFrontiers in Energy Research, 2022
The printed circuit heat exchanger (PCHE) is the key equipment of the supercritical carbon dioxide Brayton cycle applied to sodium cooled fast reactor.
Dongxu Zhang   +3 more
doaj   +1 more source

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