Results 21 to 30 of about 5,024,379 (232)

Enhancing the Efficacy of the Subcritical Water-Based Alkali Lignin Depolymerization by Optimizing the Reaction Conditions and Using Heterogeneous Catalysts

open access: yesBiomass, 2022
The catalytic depolymerization of alkali lignin into phenolic monomers was studied using subcritical water. In this study, subcritical water was used as the greener solvent with heterogeneous catalysts.
Balawanthrao Jadhav   +7 more
doaj   +1 more source

Structural Changes in Milled Wood Lignin (MWL) of Chinese Quince (Chaenomeles sinensis) Fruit Subjected to Subcritical Water Treatment

open access: yesMolecules, 2021
Subcritical water treatment has received considerable attention due to its cost effectiveness and environmentally friendly properties. In this investigation, Chinese quince fruits were submitted to subcritical water treatment (130, 150, and 170 °C), and ...
Wen-Yue Wang   +5 more
doaj   +1 more source

Applications of subcritical and supercritical water conditions for extraction, hydrolysis, gasification, and carbonization of biomass: a critical review [PDF]

open access: yesBiofuel Research Journal, 2017
This review summarizes the recent essential aspects of subcritical and supercritical water technology applied tothe extraction, hydrolysis, carbonization, and gasification processes.
D. Lachos-Perez   +6 more
doaj   +1 more source

Research Progress in Subcritical Water Extraction of Bioactive Substances from Plants

open access: yesShipin gongye ke-ji, 2022
Plant derived bioactive substances such as polyphenols and polysaccharides play an important role in functional and health food because of their antioxidant and anti-tumor properties.
Xue BAI   +5 more
doaj   +1 more source

Research on Technical Route Optimization and Energy-saving Characteristics of High-temperature Subcritical Retrofit [PDF]

open access: yesE3S Web of Conferences, 2021
In order to further reduce the power supply coal consumption rate for 300MW subcritical units, this paper will conduct a comprehensive analysis to improve the main steam and reheat steam parameters of those units based on the basic principles of ...
Wu He An, Zhong Feng Wei, Li Y.
doaj   +1 more source

Subcritical Water Extraction [PDF]

open access: yes, 2013
Extraction always involves a chemical mass transfer from one phase to another. The principles of extraction are used to advantage in everyday life, for example in making juices, coffee and others. To reduce the use of organic solvent and improve the extraction methods of constituents of plant materials, new methods such as microwave assisted extraction
A. Haghighi, M. Khajenoori
openaire   +1 more source

Conversion of Biomass to Organic Acids by Liquefaction Reactions Under Subcritical Conditions

open access: yesFrontiers in Chemistry, 2020
Recently, liquefaction of biomass in subcritical water to convert it into value-added substances has been broadly attracting attention. However, there is a gap in literature about the levulinic acid, which is a high worth substance, production from ...
Aslı Yüksel Özşen
doaj   +1 more source

Leaching of coals with subcritical water

open access: yesInternational Journal of Coal Preparation and Utilization, 2019
The effects of subcritical water and organic acid additives on the leaching of three low-rank Turkish coals, Can Tuncbilek, and Soma which have high ash and moderate sulfur contents were investigat...
Giray, E. Sultan   +2 more
openaire   +3 more sources

Organic synthesis in subcritical water [PDF]

open access: yesThe Journal of Supercritical Fluids, 1998
n ...
Holliday, Russell L.   +2 more
openaire   +1 more source

Subcritical Water Extraction of Onosma mutabilis: Process Optimization and Chemical Profile of the Extracts

open access: yesMolecules, 2023
The aboveground and root parts of Onosma mutabilis were extracted using subcritical water and the process was optimized with response surface methodology.
Selda Doğan Çalhan   +4 more
doaj   +1 more source

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