Results 81 to 90 of about 245,492 (356)

Rapid Determination of Microbial Quinones using Supercritical CO2 Extraction

Jurnal Rekayasa Kimia & Lingkungan, 2006
The supercritical CO2 extraction of microbial quinones from activated sludge samples obtained from various activated sludge was investigated and compared to the conventional method using organic solvent extraction.
Muhammad Faisal, Irvan Irvan, Yoichi Atsuta, Hiroyuki Daimon, Koichi Fujie   +4 more
doaj   +2 more sources

Configurational and Vibrational Entropy in Hydrogen-bonded Fluids [PDF]

arXiv, 2023
The thermodynamics of liquids and supercritical fluids is notorious for eluding a general theory, as can be done for crystalline solids on the basis of phonons and crystal symmetry. The extension of solid state notions such as configurational entropy and phonons to the liquid state remains an intriguing but challenging topic.
arxiv  

The Environmental Emission and Climate Change Impact of Hydrogen Fuel Derived from Photocatalysis Water‐Splitting Reaction

Advanced Energy and Sustainability Research, EarlyView.
In this works, life cycle analysis (LCA) of photocatalysis hydrogen synthesis reaction based on a pilot scale system is presented. Through the LCA, it is shown that majority of the carbon emission of the process is contributed by photocatalyst synthesis process and the use of sacrificial reagent in the photocatalytic hydrogen evolution reaction ...
Chloe Nelson, Meei Mei Gui, Peter K. J. Robertson   +2 more
wiley   +1 more source

Supercritical fluids in separation and purification: A review

Materials Science for Energy Technologies, 2019
The properties of the supercritical fluid near the critical point can be changed by varying the pressure and temperature, allowing selective and faster extraction.
Sampatrao D. Manjare, Kabir Dhingra
doaj  

Synthesis of Pt Carbon Aerogel Electrocatalysts with Multiscale Porosity Derived from Cellulose and Chitosan Biopolymer Aerogels via Supercritical Deposition for Hydrogen Evolution Reaction

Advanced Energy and Sustainability Research, EarlyView.
The synthesis of platinumcarbon aerogel electrocatalysts with multiscale porosity derived from biopolymer aerogels via supercritical deposition is presented. The electrocatalysts demonstrate similar overpotentials to commercial alternatives with significantly higher platinum loadings, while exhibiting superior stability due to enhanced porosity ...
Ala Alsuhile, Philip Sidney Pein, Şansim Bengisu Barım, Selmi Erim Bozbağ, Irina Smirnova, Can Erkey, Baldur Schroeter   +6 more
wiley   +1 more source

Characterization of ultrasonically extracted flaxseed polysaccharide gum and assessing its lipid‐lowering potential in a rat model

Food Science &Nutrition, Volume 11, Issue 1, Page 137-147, January 2023., 2023
On the basis of current research it was suggested that FPG have anti‐hyperlipidemic potential. Still, the mechanism of actions of FPG as anti‐hyperlipidemic and other therapeutic potential have yet to be explored. Abstract Flaxseed polysaccharide gum (FPG) was extracted through the ultrasound‐assisted process using water as a solvent with a yield ...
Muhammad Nadeem Akhtar, Anees Ahmed Khalil, Ahmed Bilal, Muhammad Afzaal, Tabussam Tufail, Rabia Saeed, Rabia Siddique, Arash Nemat, Muhammad Faisal Manzoor   +8 more
wiley   +1 more source

The Use of Supercritical Fluid Extraction in Carrier Recovery from a Spent Active Carbon–Zinc Acetate Catalyst

Adsorption Science & Technology, 2002
The present paper is aimed at showing the usefulness of supercritical fluid extraction in the removal of organic substances and zinc from the surface of a dangerous waste product, i.e. spent catalyst employed in the manufacture of vinyl acetate.
Lidia Dąbek
doaj   +1 more source

Development Status and Future Prospects of Hydrogen Energy Technology: Production, Storage, and Cost Analysis

Advanced Energy and Sustainability Research, EarlyView.
Hydrogen is an energy carrier, produced from renewable and nonrenewable resources. It can be stored in a variety of materials and transported to distant locations. This article reviews progress in hydrogen technology by looking at environmental and economic impact, cost analysis, and policy support at government level as way forward for bringing it to ...
Xuexue Pan, Houhua Zhou, Dinmukhambet Baimbetov, Samal Syrlybekkyzy, Berik Bakhytzhanovich Akhmetov, Qamar Abbas   +5 more
wiley   +1 more source

Organic Electrolytes Recycling From Spent Lithium‐Ion Batteries

Global Challenges, Volume 6, Issue 12, December 2022., 2022
Aged electrolytes inside spent lithium‐ion batteries consist of volatile organic solvents and toxic lithium salts, which can cause severe environmental pollution and safety issues without proper treatment. This review summarizes the reported methods to recycle aged electrolytes as well as achieve progress during industrial recycling technology and ...
Ruihan Zhang, Xingyi Shi, Oladapo Christopher Esan, Liang An   +3 more
wiley   +1 more source

Progress, Key Issues, and Future Prospects for Li‐Ion Battery Recycling

Global Challenges, Volume 6, Issue 12, December 2022., 2022
The necessity for battery recycling, various Li‐ion battery recycling technologies including pyrometallurgical, hydrometallurgical, direct repair, and regeneration methods, and recycling strategies of solid‐state Li‐metal batteries are summarized and discussed.
Xiaoxue Wu, Jun Ma, Junxiong Wang, Xuan Zhang, Guangmin Zhou, Zheng Liang   +5 more
wiley   +1 more source