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Related Concept Videos

Supercritical Fluid Chromatography01:18

Supercritical Fluid Chromatography

Supercritical fluid chromatography (SFC) provides a beneficial substitute for gas chromatography (GC) and liquid chromatography (LC) for certain samples because it merges the top attributes of both techniques. SFC allows the separation and analysis of compounds that GC or LC does not easily manage. These compounds are traditionally nonvolatile or thermally unstable, making GC unsuitable and lacking functional groups required for HPLC analysis.
SFC utilizes a supercritical fluid mobile phase,...
Phase Diagrams02:39

Phase Diagrams

A phase diagram combines plots of pressure versus temperature for the liquid-gas, solid-liquid, and solid-gas phase-transition equilibria of a substance. These diagrams indicate the physical states that exist under specific conditions of pressure and temperature and also provide the pressure dependence of the phase-transition temperatures (melting points, sublimation points, boiling points). Regions or areas labeled solid, liquid, and gas represent single phases, while lines or curves represent...
Solvents01:12

Solvents

A solvent is a substance, most often a liquid, that can dissolve other substances. Here, the substance being dissolved is called a solute. When a solvent and a solute combine, they form a solution - a homogenous mixture of both the solvent and the solute. Water is a universal biological solvent. Its polar structure allows it to dissolve many other polar compounds. The ability of water to dissolve is governed by a balance between water molecules binding to each other and binding to the solute.
A...
Turbulent Flow: Problem Solving01:09

Turbulent Flow: Problem Solving

Carbonation is a process used to dissolve carbon dioxide gas in a liquid, commonly used in the production of carbonated beverages. Achieving efficient carbonation requires careful control of temperature, pressure, and flow conditions. By adjusting these parameters, carbonation efficiency can be maximized, producing a higher concentration of CO2 in the liquid.
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures enhance...
Entropy and Solvation02:05

Entropy and Solvation

The process of surrounding a solute with solvent is called solvation. It involves evenly distributing the solute within the solvent. The rule of thumb for determining a solvent for a given compound is that like dissolves like. A good solvent has molecular characteristics similar to those of the compound to be dissolved. For example, polar solutions dissolve polar solutes, and apolar solvents dissolve apolar solutes. A polar solvent is a solvent that has a high dielectric constant (ϵ ≥ 15); an...
Carbon Dioxide Transport in the Blood01:19

Carbon Dioxide Transport in the Blood

Carbon dioxide (CO2) transport in the blood is critical to human physiology. On average, our body cells produce around 200 mL of CO2 per minute, precisely the quantity expelled by the lungs. This process involves the transportation of CO2 from the tissue cells to the lungs in three primary forms.
Forms of CO2 Transport
1. Dissolved in plasma: A small percentage (7-10%) of CO2 is transported and dissolved directly in the plasma.
2. Carbaminohemoglobin: Just over 20% of CO2 is chemically bound to...

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Updated: Jun 1, 2026

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials
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Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials

Published on: May 15, 2015

Supercritical carbon dioxide: the "greener" solvent.

H Black

    Environmental Science & Technology
    |June 9, 2011
    PubMed
    Summary

    Supercritical carbon dioxide (CO2) is a non-toxic, ozone-friendly alternative for industrial applications. This study explores its potential to replace harmful chemicals in major industrial processes.

    Area of Science:

    • Green chemistry
    • Chemical engineering
    • Environmental science

    Background:

    • Traditional industrial solvents often pose environmental and health risks.
    • Supercritical carbon dioxide (scCO2) presents a promising eco-friendly alternative.
    • Evaluating scCO2 viability is crucial for sustainable industrial practices.

    Purpose of the Study:

    • To assess the efficacy of supercritical carbon dioxide (scCO2) as a replacement for conventional solvents in industrial applications.
    • To determine if scCO2 meets the performance requirements for major industrial processes.
    • To evaluate the environmental and safety profile of scCO2 in industrial settings.

    Main Methods:

    • Literature review of scCO2 properties and applications.
    • Comparative analysis of scCO2 versus traditional solvents in key industrial processes.

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    Preparation of Biopolymer Aerogels Using Green Solvents
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    Preparation of Biopolymer Aerogels Using Green Solvents

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    Last Updated: Jun 1, 2026

    Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials
    09:05

    Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials

    Published on: May 15, 2015

    Achieving Moderate Pressures in Sealed Vessels Using Dry Ice As a Solid CO2 Source
    06:26

    Achieving Moderate Pressures in Sealed Vessels Using Dry Ice As a Solid CO2 Source

    Published on: August 17, 2018

    Preparation of Biopolymer Aerogels Using Green Solvents
    08:13

    Preparation of Biopolymer Aerogels Using Green Solvents

    Published on: July 4, 2016

  • Case studies on scCO2 implementation in relevant industries.

    • Main Results:

    • Supercritical carbon dioxide (scCO2) demonstrates comparable or superior performance in various applications.
    • scCO2 is non-toxic and does not deplete the ozone layer.
    • Successful industrial implementations of scCO2 have been documented.

    Conclusions:

    • Supercritical carbon dioxide (scCO2) is a viable, sustainable alternative for numerous industrial applications.
    • Its adoption can lead to significant environmental and health benefits.
    • Further research and development can expand scCO2's industrial footprint.