Results 111 to 120 of about 18,367 (186)

The use of near infrared spectroscopy to quantify lignite-derived carbon in humus - lignite mixtures

open access: yes, 2007
Assessment of the percentage of lignite-derived C (lign-C%) in mine soils may be achieved only by using time-consuming and expensive methods. The objectives of this study were (1) to compare near infrared (NIR) spectra of forest humus and lignite and (2)
Beese, Friedrich   +2 more
core   +1 more source

Catalytic Hydroconversion of Model Compounds over Ni/NiO@NC Nanoparticles

open access: yesMolecules
The conversion of lignite into aromatic compounds by highly active catalysts is a key strategy for lignite valorization. In this study, Ni/NiO@NC nanocomposites with a high specific surface area and a vesicular structure were successfully prepared via a ...
Ting Liu   +7 more
doaj   +1 more source

An overview of underground coal gasification and its applicability for Turkish lignite

open access: yes, 2010
It is accepted that coal is going to maintain its significance as an energy source for longer time than oil and natural gas. Environmental concerns brought about the concept of clean coal technologies in the recent years.
Kilic, M. G., Yoncaci, S., Pekpak, E.
core  

Landscape and the large-scale surface mining of lignite [PDF]

open access: yes, 1981
The purpose of this study is the discussion of landscape and the largescale surface mining of lignite. The subject is approached by - - considering surface mining and the factors that affect it, with particular reference to the New Zealand situation;
McKenzie, D. G.
core  

On the Carbonisation of Lignite

open access: yesJournal of the Fuel Society of Japan, 1950
乾溜爐の設計に先立ち平井炭礦の亜炭について二三の實驗室實驗を行い, 次いで内熱式の、新乾溜爐を設計建設した。此の爐は周に設けられた爐で作られた燃燒ガスを壓入して加熱用に用いる方式をとり, 此のガスの顯熱とガス中に7~8%含まれる酸素によるチヤプの一部の燃燒熱が加熱用の熱源として用いられる。操業の結果によると此の方式で膝乾溜が均一匠行えない憾があり, 運韓初期を除く六部分の間ガスの壓入を停止して自燃により乾溜する方法をも試みた。此の方式では前者に比べて製品の品質がよくなるという利點があるが, 爐の處理能力が低下するという缺點をも有する。
openaire   +3 more sources

Lignite hydrocolloids

open access: yes, 2013
This diploma thesis deals with the study of non-energy use of lignite. The main objective was to find an optimal recipe for the preparation of liquid and semi-solid (paste) hydrocolloids from the South Moravian lignite using the planetary mill and select
Macháčková, Mirka
core  

DESULFURIZATION OF BOLU-GOYNUK LIGNITE USING CUPRIC CHLORIDE

open access: yes, 1992
Cupric chloride oxidation of Bolu-Goynuk lignite was studied using a four-level factorial design with four process variables: temperature, time. cupric chloride concentration and particle size of the lignite.
OGUZ, M, OLCAY, A
core   +1 more source

Briquetting of Istanbul-Kemerburgaz lignite of Turkey

open access: yes, 1996
A lignite sample from the Kemerburgaz-Istanbul area was briquetted with or without binder material. Molasses and Sirnak (Turkey) asphaltite were used as binder materials at different ratios.
Kucukbayrak, S   +2 more
core   +1 more source

Optimizing enhanced coalbed methane recovery in thick lignite formations: An integrated technical and economic evaluation

open access: yesResults in Engineering
The Erlian Basin, characterized by extensive lignite deposits with considerable thickness, presents significant potential for coalbed methane (CBM) extraction.
Zhiming Fang, Shaicheng Shen
doaj   +1 more source

Soil salination and natural lignite as a potential remediating agent

open access: yes, 2009
This bachelor thesis deals with sorption ability of raw and water washed lignite for salt NaCl from water solution. Measurement was carried out in accordance with norm ČSN 11265 Quality of soil – Determination of electric conductivity with some ...
Kořínková, Alena
core  

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