Results 61 to 70 of about 201,364 (273)

Investigation and Comparison of the Enrichment Potential of Turkey (Şenkaya, Erzurum) Coals with Knelson Concentrator

open access: yesAdvances in Materials Science and Engineering, 2019
The quality of coals from, Erzurum varies widely. Two coal samples from this area were compared. The first has a composition of 19% ash, 5700 kcal, and 3% sulfur while the other has 49.20% ash, 3000 kcal, and 1.6% sulfur composition.
Oyku Bilgin
doaj   +1 more source

Evaluasi Pemanfaatan Abu Terbang (Fly Ash) Batubara sebagai Campuran Media Tanam pada Tanaman Tomat (Solanum Lycopersicum) [PDF]

open access: yes, 2012
As the impact of rising oil prices, the coal consumption in industry has increased, a consequence of coal waste in the form of fly ash and bottom ash to be very abundant. This research was conducted to determine the benefits of fly ash as planting media.
Dewi, A. H. (Anggi)   +2 more
core  

Improving Antioxidants and Physicochemical Properties of Wild Rice Noodles by Fortification With Carrot Powder

open access: yesCereal Chemistry, EarlyView.
ABSTRACT Background and Objectives Wild rice (WR), a nutritious cereal rich in phytochemicals, remains underutilized despite its health benefits. This study explored deep purple (DP), purple sun hybrid (PSH), purple haze (PH), cosmic purple (CP), and vistaric sky blue (VSB) carrot powders as fortificants in WR noodles at 10%, 20%, and 30% levels in ...
Beverly Cheruto Too   +3 more
wiley   +1 more source

Selective Oxidation Strategies for Cost‐Efficient Green Hydrogen Production via Hybrid Water Electrolysis

open access: yesCarbon Energy, EarlyView.
Hybrid water electrolysis has emerged as a promising alternative to conventional electrolysis for sustainable hydrogen production. The economic potential of replacing water oxidation with organic substrates is assessed. For each substrate, representative electrocatalysts and mechanistic insights are reviewed to identify design principles for optimized ...
Conor Brennan‐Pollak   +12 more
wiley   +1 more source

Petrographic Characteristics of Coal Gasification and Combustion by-Products from High Volatile Bituminous Coal

open access: yesEnergies, 2020
The coal was gasified in a fluidized bed reactor with CO2 as a gasifying agent at 889–980 °C. The coal and gasification residue produced during gasification was burned at temperatures up to 900 °C.
Barbara Bielowicz
doaj   +1 more source

Energy Balancing of Electrochemical Alternatives to the Solvay Process

open access: yesChemie Ingenieur Technik, EarlyView.
To overcome the CaCl2 and CO2 emissions custom to the conventional Solvay process in soda ash production, electrochemically based alternatives were investigated. In particular, the mass‐ and energy balances for chlor‐alkali electrolysis and bipolar electrodialysis‐based processes are discussed comprehensively in the presented work.
Tom Wenzel   +3 more
wiley   +1 more source

Distribution of Clay Minerals in Light Coal Fractions and the Thermal Reaction Products of These Clay Minerals during Combustion in a Drop Tube Furnace

open access: yesEnergies, 2016
To estimate the contribution of clay minerals in light coal fractions to ash deposition in furnaces, we investigated their distribution and thermal reaction products.
Sida Tian   +4 more
doaj   +1 more source

Leaching characteristics of fluoride from pond ash [PDF]

open access: yes, 2011
Now, more than 100 million tons of coal fly ash is produced annually in India from combustion of coal in power plants. It is expected that about 150 million tons of coal ash will be produced due to burning of coal in power plants by the year of 2015 ...
Mallik, Gayadhar
core  

Influence of Particle Size, Moisture, and Cloud Density on Wood Dust Ignition

open access: yesChemie Ingenieur Technik, EarlyView.
The ignition and combustion of particle clouds are strongly affected by particle interactions. This study uses spectroscopy to examine effects of particle size, water content, and cloud density. Results show ignition delay rises with larger size and density, whereas combustion duration depends mainly on water and density due to moisture‐driven ...
Matteo Giesen   +2 more
wiley   +1 more source

Reduction of Ash Content in Raw Coal Using Acids and Alkali

open access: yesE-Journal of Chemistry, 2010
Ash, an inorganic matter present in coal is amenable for dissolution using suitable reagents. Thus the dissolution of ash and its subsequent removal reduces the release of many toxic elements into the environment by coal based industries.
K. H. Shivaprasad   +2 more
doaj   +1 more source

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