Results 31 to 40 of about 66,438 (265)

Grade Level of Lignite Coal datas in the different areas with Decison Tree, Random Forest, and Discriminant Analysis Methods

open access: yesApplied Artificial Intelligence, 2020
Lignite is one of the most important energy sources. An important problem in the economic and technical evaluation of lignite reserves is to measure lignite quality.
Sevcan Aytaç Korkmaz
doaj   +1 more source

Effect and mechanism of biomethane conversion from lignite promoted by waste oil

open access: yesMeitan xuebao, 2023
In order to improve the conversion efficiency of lignite to biomethane, the gas production effect of mixed fermentation of waste oil and lignite was discussed in this paper.
Hongyu GUO   +5 more
doaj   +1 more source

Synergism between lignite and high-sulfur petroleum coke in CO2 gasification

open access: yesGreen Processing and Synthesis, 2023
High-sulfur petroleum coke (PC) as solid waste has high treatment cost. Gasification technology can utilize PC and lignite for co-gasification. Organically combining the two is the key to expanding the adaptability of gasification raw materials.
Mao Lirui   +3 more
doaj   +1 more source

Synchronizing a triple dragline stripping system in thick overburden [PDF]

open access: yes, 2017
This study addresses the use of combined stripping systems to investigate the technical feasibility of extracting thick coal seams underlying deep overburden strata.
Duran, Zekeriya   +2 more
core   +1 more source

Insight into the effect of chemical structure for microbial lignite methanation

open access: yesHeliyon, 2023
The chemical structure of lignite plays a fundamental role in microbial degradation, which can be altered to increase gas production. In this study, the structural changes in lignite were analyzed by conducting pretreatment and biomethane gas production ...
Lin Yang   +3 more
doaj  

New early Eocene vertebrate assemblage from western India reveals a mixed fauna of European and Gondwana affinities [PDF]

open access: yes, 2016
The Ypresian Cambay Shale Formation at Vastan and Mangrol lignite mines in Gujarat, western India, has yielded a rich vertebrate fauna with numerous taxa of European affinities.
Folie, Annelise   +8 more
core   +3 more sources

Spontaneous Combustion in Coal Stockpiles with Different Particle Sizes

open access: yesInternational Journal of Economic and Environment Geology
In this study, the spontaneous combustion behavior of stocks created with coals of 3 different particlesizes (0-18/18-28/25-100 mm) was examined for 2 months and the results were analyzed.
Arif Çelik   +3 more
doaj   +1 more source

Optimization of Combustion Characteristics of Blended Coals Based on TOPSIS Method

open access: yesComplexity, 2018
The Technique for Order Preference by Similarity to an Ideal Solution (TOPSIS) method is used to find optimal mixing scheme of Zhaotong lignite, Fuyuan bituminous coal, and Xiaolongtan lignite in terms of combustion performance. Comparative evaluation of
Yingchun Liu   +5 more
doaj   +1 more source

Adsorption of Pb(II) cation from aqueous solutions by acid modified low-rank coal: An experimental study and simulation

open access: yesWater Science and Technology, 2021
An acid modified approach to enhance the adsorption capacity of low-rank coal (lignite) is proposed to reduce the risk of heavy metal ions within the wastewater.
Penghui Wang   +3 more
doaj   +1 more source

Early maturation processes in coal. Part 1: Pyrolysis mass balances and structural evolution of coalified wood from the Morwell Brown Coal seam [PDF]

open access: yes, 2009
In this work, we develop a theoretical approach to evaluate maturation process of kerogen-like material, involving molecular dynamic reactive modeling with a reactive force field to simulate the thermal stress. The Morwell coal has been selected to study
Adler   +32 more
core   +3 more sources

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