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Witoto Ash Salts From the Amazon [PDF]

Journal of Ethnopharmacology, 2011
This article presents the results of an anthropological and ethnobotanical study of the vegetable salts used by the Witoto Indians of the Amazon. It thoroughly documents the species used, the processing of the salts, their chemical composition and their anthropological, nutritional and medicinal relevance.Salts from 57 plant species known to the Witoto
Juan Alvaro Echeverri
exaly   +3 more sources

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Salt-Thermal Zeolitization of Fly Ash

Environmental Science & Technology, 2001
The molten-salt method has been recently proposed as a new approach to zeolitization of fly ash. Unlike the hydrothermal method, this method employs salt mixtures as the reaction medium without any addition of water. In this study, systematic investigation has been conducted on zeolitization of fly ash in a NaOH-NaNO3 system in order to elucidate the ...
C L, Choi, M, Park, D H, Lee, I E, Kim, B Y, Park, J, Choi   +5 more
openaire   +2 more sources

Zeolitization of pumice in ash-sodium salt solutions

Materials Chemistry and Physics, 1983
Lipari pumice has selectively been transformed into zeolites in NaOH NaCl media. The influence of NaOH concentration and residence time on the degree of zeolitization are discussed. © 1983.
L. M. Saija, OTTANA', Rosaria, C. Zipelli, N. Burriesci   +3 more
openaire   +3 more sources

Role of Magnesium Salts in Coal De-Ashing by Flotation

Tenside Surfactants Detergents, 2021
Abstract The most frequently investigated salts in coal flotation are chlorides. However, seawater contains additional salts such as sulfates. In coal flotation, magnesium chlorides showed the best results in terms of higher yield and lower ash content compared to the other magnesium salts studied.
Rawya Gamal, Nader A.A. Edress, Khaled A. Abuhasel, Ayman A. El-Midany, Salah E. El-Mofty   +4 more
openaire   +1 more source

Optimum lime content of fly ash with salt

Proceedings of the Institution of Civil Engineers - Ground Improvement, 2003
The pozzolanic reactivity of fly ash, which plays an important role in its utilisation for geotechnical applications, depends on the reactive silica and the lime content. Fly ashes containing sufficient reactive silica but insufficient lime content improve strength on the addition of lime.
Narendra, B.S., Sivapullaiah, P.V., Ramesh, H.N.   +2 more
openaire   +2 more sources

Modeling of Salt Sorption in Volcanic Ash Soil

Communications in Soil Science and Plant Analysis, 2017
Groundwater pollution by nitrate from agricultural fields is a worldwide problem. To improve the understanding of nitrate transport processes through volcanic ash soils overlying groundwater aquifers, salt sorption experiments were performed. Salt sorption is the process that involves the simultaneous use of cation and anion adsorption mechanisms ...
Kei Nakagawa, Shin-Ichiro Wada, Ryoma Kitamura, Ronny Berndtsson   +3 more
openaire   +1 more source

Improvement of strength of fly ash with lime and sodium salts

Proceedings of the Institution of Civil Engineers - Ground Improvement, 1999
It is often necessary to improve the strength of fly ash to enable its use for many geotechnical applications. Lime in some form or other is normally used as an admixture. Methods are established to determine the optimum lime content for fly ash, as the addition of lime beyond the optimum lime content may not be beneficial or economically viable. This
Ramesh, H.N., Mohan, M.S., Sivapullaiah, P.V.   +2 more
openaire   +2 more sources

Extraction and quantitation of various potassium salts in straw ash

Environmental Progress & Sustainable Energy, 2014
Biomass ash contains various potassium salts, which have high potential as crop fertilizers. In this study, a method of extracting and quantifying various potassium salts from straw ash was proposed and investigated. Straw ash was prepared in a muffle furnace at 500°C and then successively and repeatedly treated through leaching, filtration ...
Yibin Wang, Xuebin Wang, Houzhang Tan, Wenzhi Du, Xiaodi Qu   +4 more
openaire   +1 more source

Salt roasting of suncor oil sands fly ash

Metallurgical and Materials Transactions B, 2004
Fly ash samples from 25 years of Suncor’s oil sands upgrading operations were tested to determine the effects of time, temperature, and salt addition on vanadium recovery by salt roasting and water leaching. The optimum roasting conditions for “carbon-free” ash were determined to be 2 to 3 hours roasting at 850 °C to 900 °C with NaCl additions of 20 to
P. C. Holloway, T. H. Etsell
openaire   +1 more source

Demineralization of a High Ash Coal in Acidic Salt Solution

2020
The research investigated the reduction of the ash and sulphur contents of the high ash and high sulphur Nigerian Akunsa coal. The coal as received contained 38 and 1.98% of ash and sulphur, respectively. The coal samples were leached using sodium carbonate, nitric acid, and sodium carbonate acidified in nitric acid at varying combinations of ...
A. A. Adeleke, L. O. Jimoh, S. A. Ibitoye   +2 more
openaire   +1 more source