Subcritical water extraction of organic acids from chicken manure

2020 ◽  
Author(s):  
Svetlana Sushkova ◽  
Tatiana Minkina ◽  
Victor Chaplygin ◽  
Dina Nevidomskaya ◽  
Vishnu Rajput ◽  
...  
Keyword(s):  
Organic Acids ◽  
Subcritical Water ◽  
Water Extraction ◽  
Chicken Manure ◽  
Subcritical Water Extraction

Subcritical water extraction of indium from indium tin oxide scrap using organic acid solutions

2020 ◽  
Vol 17 (2) ◽  
pp. 158
Author(s):  
Astrid Rahmawati ◽  
Kurniawan Adi Kuncoro ◽  
Suryadi Ismadji ◽  
Jhy-Chern Liu
Keyword(s):  
Acetic Acid ◽  
Organic Acids ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Gluconic Acid ◽  
Subcritical Water ◽  
Extraction Methods ◽  
Water Extraction ◽  
Etidronic Acid ◽  
Subcritical Water Extraction

Environmental contextIndium is a metal increasingly used in high-technology industries, creating a demand for efficient recycling technology. We investigated extraction of indium from waste using a subcritical water extraction with organic acids. Compared with conventional methods employing concentrated mineral acids, the new method is less corrosive, more efficient and required shorter extraction times. AbstractSubcritical water extraction (SWE) was applied to extract indium (In) from indium tin oxide (ITO) scrap. Four organic acids, acetic acid, gluconic acid, citric acid (CA) and etidronic acid (EA), were used at a solid-to-liquid ratio (S/L) of 10gL−1. Neither acetic acid nor gluconic acid yielded significant extraction of indium. A total of 70.71% and 96.93% of indium was extracted using 1M of CA and EA respectively at 150°C and a final pressure of 18–19 bar within 30min. The extraction efficiency of In was shown to increase with the increase in acid concentration and in temperature. Compared with conventional extraction methods, SWE was more effective using less concentrated acids and required a shorter reaction time.

SUBCRITICAL WATER EXTRACTION OF ESSENTIAL OILS FROMZATARIA MULTIFLORABOISS

2009 ◽  
Vol 32 (6) ◽  
pp. 804-816 ◽  
Author(s):  
M. KHAJENOORI ◽  
A. HAGHIGHI ASL ◽  
F. HORMOZI ◽  
M.H. EIKANI ◽  
H. NOORI BIDGOLI
Keyword(s):  
Essential Oils ◽  
Subcritical Water ◽  
Water Extraction ◽  
Subcritical Water Extraction

Optimization of subcritical water extraction of phenolic antioxidants from pomegranate (Punica granatum L.) peel by response surface methodology

2017 ◽  
Vol 9 (32) ◽  
pp. 4647-4656 ◽  
Author(s):  
Linlin Yan ◽  
Yungang Cao ◽  
Guangyao Zheng
Keyword(s):  
Response Surface Methodology ◽  
Subcritical Water ◽  
Punica Granatum ◽  
Water Extraction ◽  
Phenolic Antioxidants ◽  
Subcritical Water Extraction ◽  
Extraction Technology ◽  
Pomegranate Peel ◽  
Efficient Extraction ◽  
Punica Granatum L

Subcritical water extraction (SWE), a ‘green’ and efficient extraction technology, was applied to extract phenolic antioxidants from pomegranate peel in this study.

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

Molecules ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 398
Author(s):  
Wen-Yue Wang ◽  
Zhao Qin ◽  
Hua-Min Liu ◽  
Xue-De Wang ◽  
Jing-Hao Gao ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Water Treatment ◽  
Quantum Coherence ◽  
Structural Changes ◽  
31P Nmr ◽  
Subcritical Water ◽  
Water Extraction ◽  
Subcritical Water Extraction ◽  
Milled Wood Lignin ◽  
Chinese Quince

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 the influence of treatments on the structure of milled wood lignin (MWL) was evaluated. Structural properties of these lignin samples (UL, L130, L150, and L170) were investigated by high-performance anion exchange chromatography (HPAEC), FT-IR, gel permeation chromatography (GPC), TGA, pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS), 2D-Heteronculear Single Quantum Coherence (HSQC) -NMR, and 31P-NMR. The carbohydrate analysis showed that xylose in the samples increased significantly with higher temperature, and according to molecular weight and thermal analysis, the MWLs of the pretreated residues have higher thermal stability with increased molecular weight. The spectra of 2D-NMR and 31P-NMR demonstrated that the chemical linkages in the MWLs were mainly β-O-4′ ether bonds, β-5′ and β-β′, and the units were principally G- S- H- type with small amounts of ferulic acids; these results are consistent with the results of Py-GC/MS analysis. It is believed that understanding the structural changes in MWL caused by subcritical water treatment will contribute to understanding the mechanism of subcritical water extraction, which in turn will provide a theoretical basis for developing the technology of subcritical water extraction.

Subcritical water extraction of fucoidan from Saccharina japonica: optimization, characterization and biological studies

2017 ◽  
Vol 30 (1) ◽  
pp. 579-590 ◽  
Author(s):  
Periaswamy Sivagnanam Saravana ◽  
Adane Tilahun ◽  
Collin Gerenew ◽  
Vo Dinh Tri ◽  
Nan Hee Kim ◽  
...  
Keyword(s):  
Subcritical Water ◽  
Saccharina Japonica ◽  
Water Extraction ◽  
Subcritical Water Extraction ◽  
Biological Studies

High performance curcumin subcritical water extraction from turmeric (Curcuma longa L.)

2016 ◽  
Vol 1022 ◽  
pp. 191-198 ◽  
Author(s):  
Mohammad Valizadeh Kiamahalleh ◽  
Ghasem Najafpour-Darzi ◽  
Mostafa Rahimnejad ◽  
Ali Akbar Moghadamnia ◽  
Meisam Valizadeh Kiamahalleh
Keyword(s):  
High Performance ◽  
Subcritical Water ◽  
Curcuma Longa ◽  
Water Extraction ◽  
Subcritical Water Extraction

Influence of temperature on the subcritical water extraction of Actinidia arguta leaves: A screening of pro-healthy compounds

2022 ◽  
Vol 25 ◽  
pp. 100593
Author(s):  
Ana Margarida Silva ◽  
Ana Sofia Luís ◽  
Manuela M. Moreira ◽  
Ricardo Ferraz ◽  
Tanja Brezo-Borjan ◽  
...  
Keyword(s):  
Subcritical Water ◽  
Water Extraction ◽  
Subcritical Water Extraction ◽  
Influence Of Temperature ◽  
Actinidia Arguta ◽  
Influence Of Temperature On

scholarly journals Tuning the molar mass and substitution pattern of complex xylans from corn fibre using subcritical water extraction

2020 ◽  
Vol 22 (23) ◽  
pp. 8337-8352
Author(s):  
Reskandi C. Rudjito ◽  
Amparo Jiménez-Quero ◽  
Mahmoud Hamzaoui ◽  
Stéphane Kohnen ◽  
Francisco Vilaplana
Keyword(s):  
Molar Mass ◽  
Subcritical Water ◽  
Water Extraction ◽  
Subcritical Water Extraction ◽  
Substitution Pattern ◽  
Corn Fibre

Subcritical water tunes the molar mass and substitution pattern of complex xylans from corn fibre, preserving the bound ferulic monomers and dimers.

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