Results 51 to 60 of about 13,246 (253)

A Study on the Durabilities of High Volume Coal Ash Concrete by the Kinds of Coal Ash [PDF]

Journal of the Korea Institute of Building Construction, 2009
Coal ash is a by-product of the combustion of pulverized coal, and much of this is dumped in landfills. The disposal of coal ash is one of the major issues for environmental problems. In this paper, the effects of the kinds and replacement ratio of coal ash on the durabilities of concrete mixtures are investigated. Fine aggregate was replaced with coal
Se-Jin Choi, Moo-Han Kim
openaire   +1 more source

Artificial Intelligence–Driven and Digital Practices for Circular Business and Finance: Insights for Advancing Hubs for Circularity

Business Strategy and the Environment, EarlyView.
ABSTRACT The emerging concept of Hubs for Circularity (H4Cs) presents an opportunity to create collaborative, self‐sustaining regional industrial ecosystems that drive circular economy transitions at scale. However, the operationalisation of H4Cs faces financial, organisational and data‐driven challenges.
Aditya Tripathi, Marcos R. Machado, Laura Spierdijk, Devrim Murat Yazan   +3 more
wiley   +1 more source

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

Advances 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

Engineering Biochar‐Derived Functional Materials for High‐Performance Supercapacitors: Design Principles, Mechanisms, and Scalable Strategies

Carbon Energy, EarlyView.
ABSTRACT Biochar has emerged as a useful and adaptable source of carbon for supercapacitor electrodes. Its value comes from the way biomass chemistry, thermal conversion, and activation conditions shape the resulting pore network, surface groups, and degree of carbon ordering.
Soumen Mandal, Avinash C. Mendhe, Mayna Roy, Neha S. Barse, Taejoon Park, Han‐Seung Lee, Haigun Lee   +6 more
wiley   +1 more source

Utilizing Coal Ash and Humic Substances as Soil Ameliorant on Reclaimed Post-Mining Land

Journal of Tropical Soils, 2014
Coal ash and humic substances can be used as soil ameliorant in the reclamation of formerly mined land. Due to its high pH and nutrients content, coal ash can be used to improve the chemical properties of the soil, such as increasing ...
Ade Mariyam Oklima, Sudarsono, Iskandar, Dyah Tjahyandari Suryaningtyas   +3 more
doaj   +1 more source

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

Carbon 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, Lua Henderson, Cian Clarke, Maida A. Costa de Oliveira, Dídac A. Fenoll, Sreedhanya Pallilavalappil, Aswathy Babu, Shaista Jabeen, Pranav K. Gangadharan, Huabin Zhang, Suresh C. Pillai, Paula E. Colavita, Max García‐Melchor   +12 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

Energies, 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, Yuqun Zhuo, Zhonghua Zhan, Xinqian Shu, Zhizhong Kang   +4 more
doaj   +1 more source

Insights Into the Effect of Humic Acids Extraction From Coal on Hard Carbon Microstructure and Sodium Storage Properties

Carbon Energy, EarlyView.
This study employs a simple solid‐phase alkali‐oxygen oxidation (SAO) method to extract inherent components (humic acids) from coal. We successfully extracted yellow, brown, and black humic acids by adjusting the amount of alkali. Among them, brown humic acid extraction created abundant ultra‐micropores and closed pores, greatly enhancing sodium ...
Ruizhen Song, Yakun Tang, Xiaojun Lv, Jingjing Diao, Yue Zhang, Wenhai Zhang, Lang Liu, Limin Deng, Yuliang Cao   +8 more
wiley   +1 more source

A novel multi-model estimation of phosphorus in coal and its ash using FTIR spectroscopy

Scientific Reports
The level of phosphorus must be carefully monitored for proper and effective utilization of coal and coal ash. The phosphorus content needs to be assessed to optimize combustion efficiency and maintenance costs of power plants, ensure quality, and ...
Arya Vinod, Anup Krishna Prasad, Sameeksha Mishra, Bitan Purkait, Shailayee Mukherjee, Anubhav Shukla, Nirasindhu Desinayak, Bhabesh Chandra Sarkar, Atul Kumar Varma   +8 more
doaj   +1 more source

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

Energies, 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