Applications of Nonconventional Green Extraction Technologies in Process Industries: Challenges, Limitations and Perspectives
This study reviewed five different nonconventional technologies which are aligned with green concepts of product recovery from raw materials on industrial scale, with minimal energy consumption and chemical use. Namely, this study reviewed supercritical fluid extraction (SCFE), pressurized liquid ex...
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| Veröffentlicht in: | Sustainability 2020-07, Vol.12 (13), p.5244 |
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| creator | Fomo, Gertrude Madzimbamuto, Tafirenyika Nyamayaro Ojumu, Tunde Victor |
| description | This study reviewed five different nonconventional technologies which are aligned with green concepts of product recovery from raw materials on industrial scale, with minimal energy consumption and chemical use. Namely, this study reviewed supercritical fluid extraction (SCFE), pressurized liquid extraction (PLE), microwave-assisted extraction (MAE), ultrasound extraction (UAE) and pulsed electric fields extraction (PEFE). This paper provides an overview of relevant innovative work done in process industries on different plant matrices for functional value-added compounds and byproduct production. A comparison of the five extraction methods showed the supercritical CO2 (SC-CO2) process to be more reliable despite some limitations and challenges in terms of extraction yield and solubility of some bioactive compounds when applied in processing industries. However, these challenges can be solved by using ionic liquids as a trainer or cosolvent to supercritical CO2 during the extraction process. The choice of ionic liquid over organic solvents used to enhance extraction yield and solubility is based on properties such as hydrophobicity, polarity and selectivity in addition to a safe environment. |
| doi_str_mv | 10.3390/su12135244 |
| format | Article |
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| source | MDPI - Multidisciplinary Digital Publishing Institute; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Bioactive compounds Biomass Carbon dioxide Dielectric properties Efficiency Electric fields Energy consumption Food Hydrophobicity Ionic liquids Materials recovery Oil sands Oil shale Organic solvents Petroleum refineries Pharmaceutical industry Polarity Raw materials Reviews Selectivity Solubility Supercritical fluids Supercritical gas extraction Textiles Ultrasonic imaging Ultrasound |
| title | Applications of Nonconventional Green Extraction Technologies in Process Industries: Challenges, Limitations and Perspectives |
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