Results 41 to 50 of about 70,133 (264)

Aporosa Blume from the paleoequatorial rainforest of Bikaner, India: Its evolution and diversification in deep time [PDF]

, 2016
The Gondwanan origin, northward migration and subsequent collision with Asia means that the Indian subcontinent is of particular interest regarding the origin and dispersal of numerous plants and animal species.
Mehrotra, Rakesh C., Shukla, Anumeha, Spicer, Robert A., Spicer, Teresa E.V.   +3 more
core   +1 more source

The Impact of Organic Constituents in Coal Chemical Wastewater on Additive Adsorption at the Coal Surface: Experimental Investigation and Molecular Dynamics Simulation

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Direct preparation of coal–water slurry using coal chemical wastewater represents an economical and feasible approach for wastewater resource utilization. Unlike clean water, however, the complex organic components in wastewater may exert adverse effects on slurry properties.
Yi Xiang, Zhen Zhao, Fuyan Gao, Zhenghui Zhao, Hang Li, Eric J. Hu, Ruikun Wang   +6 more
wiley   +1 more source

Research Status and Development Trend of Macromolecular Structure and Model Construction of Different Coals

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Coal is a natural macromolecular substance composed of complex organic molecules and a small amount of minerals. Its chemical composition and microstructure are highly complex and variable, and no unified definition exists. This inherent structural complexity underscores the theoretical significance of constructing accurate macromolecular ...
Chao Zhou, Jun Chen, Yali Cheng, Huanhuan Shang, Longxiang Bao, Chenliang Peng   +5 more
wiley   +1 more source

Study on the Water in Lignite by DSC

MATEC Web of Conferences, 2017
As pointed out in several previous works, new drying technologies must be developed to ensure lignite remained competitive. In order to design and test them, it was needed to have a better understanding of the characters of water in lignite.
Li You, Zhang Shouyu, Zhao Menghao, Mao Qing, Yao Yunlong, Yang Jingning   +5 more
doaj   +1 more source

The Effect of Demineralization on Coal Functional Group Pyrolysis: Rank‐Dependent Dual Mechanisms of Structural Reorganization and Mineral Catalysis

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Coal pyrolysis, as a key thermochemical conversion process, is significantly influenced by inherent minerals, yet their role across different coal ranks remains inadequately understood. This study investigates the effect of acid‐washing (demineralization) on the thermal decomposition of six functional groups (aliphatic C–H, aromatic C–H/C=C, C=
Zhiyuan Niu, Guijian Liu, Hao Yin, Yang Song, Aifang Ding   +4 more
wiley   +1 more source

Extraction of Ge and synchronous activation of humic acid in germanium bearing lignite via oxidation leaching

Fuel Processing Technology
Germanium-bearing lignite was a crucial source for Ge extraction; however, existing methods focus on extracting Ge from lignite by-products, which overlooked its abundant organic matters.
Honghu Tang, Bingjian Liu, Xiongxing Zhang, Lijun Li, Zhenyue Zhang, Qingjun Guan   +5 more
doaj   +1 more source

Sulfur analysis of Bolu-Mengen lignite before and after microbiological treatment using reductive pyrolysis and gas chromatography/mass spectrometry [PDF]

, 2005
Atmospheric pressure-temperature programmed reduction coupled with on-line mass spectrometry (AP-TPR/MS) is used for the first time on microbiologically treated coal samples as a technique to monitor the degree of desulfurization of the various sulfur ...
Bozdemir T., Brown S. D., Durusoy T., Durusoy T., Gryglewicz G., J. Yperman, Jagtoyen M., Juszczak A., Karavaiko G. I., Klein J., Maes I. I., Maes I. I., Maes I. I., Mullens S., Olson G., Olsson G., R. Carleer, Rutkowski P., S. Mullens, Selsbo S., Stefanova M., T. Bozdemir, T. Durusoy, Van Aelst J., Van Aelst J., Y. Yürüm, Yperman J., Álvarez R.   +27 more
core   +1 more source

Enhancing energy recovery from waste through torrefaction: A study on municipal solid waste (MSW) fractions under N2 and CO2 atmospheres

The Canadian Journal of Chemical Engineering, EarlyView.
An overview of municipal solid waste torrefaction under various sweep gases. Abstract This study investigates the impact of torrefaction on municipal solid waste (MSW) fractions, focusing on energy recovery, calorific value enhancement, mass yield reduction, and energy densification under both nitrogen (N2) and carbon dioxide (CO2) atmospheres.
Fatemeh Salami, Naomi B. Klinghoffer
wiley   +1 more source

Effect of Re-Used Lignite and Mineral Wool Growing Mats on Plant Growth, Yield and Fruit Quality of Cucumber and Physical Parameters of Substrates in Hydroponic Cultivation

Agronomy, 2021
In hydroponic cultivation of vegetables with a solid substrate, mineral wool predominates. The pro-ecological policy and consumers’ expectations cause an increase in interest in organic substrates, which, when properly used, are less harmful to the ...
Radosław Łaźny, Małgorzata Mirgos, Jarosław L. Przybył, Jacek S. Nowak, Małgorzata Kunka, Janina Gajc-Wolska, Katarzyna Kowalczyk   +6 more
doaj   +1 more source

Enhancement of the Plant‐Accessible Phosphate Fraction in Sewage Sludge Ashes by Na+ or K+ Addition Prior to Combustion

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
The addition of Na2CO3 or K2CO3 to sewage sludge prior to combustion leads to the production of ashes containing phosphate in the form of buchwaldite‐like phases (Ca(Na/K)PO4). Compared to conventional sewage sludge mono‐ashes, such Na‐ or K‐ashes show greatly increased P‐solubilities and proved to be potent P‐fertiliser materials in greenhouse ...
Lorenz Bier‐Schorr, Viktoria Gräser, Michael Scherer‐Lorenzen, Peter Hajek, Philipp Kurz   +4 more
wiley   +1 more source