Results 81 to 90 of about 31,093 (293)

Solidification/stabilisation of soil contaminated with metal: a review [PDF]

, 2008
Solidification/stabilisation (S/S) is generically defined as a chemical and physical alteration technique of reducing the mobility as well as solubility of contaminants in wastes in order to convert them into chemically inert form.
Goh, B.M., Yin, C-Y
core   +1 more source

Are Large Trojan Asteroids Salty? An Observational, Theoretical, and Experimental Study

, 2012
With a total mass similar to the main asteroid belt, the Jovian Trojan asteroids are a major feature in the solar system. Based upon the thermal infrared spectra of the largest Trojans obtained with the Spitzer space telescope, Emery et al.
Glotch, Timothy, Lucey, Paul, Yang, Bin
core   +1 more source

Technological Aspects of Sintering Low-Quality Wolframite Concentrate with Potassium Carbonate

Applied Sciences
The loss of quality of wolframite concentrates determines the need to improve their processing method that ensures maximum conversion of tungsten into water-soluble wolframate and a reduction in water-soluble impurities.
Kirill V. Pikulin, Lyudmila I. Galkova, Galina Y. Vitkina, Antonina I. Karlina   +3 more
doaj   +1 more source

Natural waters in Amazonia. III. Ammonium molybdate-reactive silica

, 1970
Natural waters of the Amazonian Tertiary formations along the Manaus-Itacoatjara Road were studied with respect to variations in average seasonal and yearly soluble silica content.
Brinkmann, W., Dos Santos, A.
core  

Sulphur and Carbon Isotopes as Tracers of Past Sub-seafloor Microbial Activity [PDF]

, 2019
Microbial life below the seafloor has changed over geological time, but these changes are often not obvious, as they are not recorded in the sediment.
Brunner, Benjamin, Böttcher, Michael E., Jørgensen, Bo Barker, Meister, Patrick, Picard, Aude   +4 more
core   +3 more sources

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

LABORATORY INVESTIGATIONS OF SILICATE MUD CONTAMINATION WITH CALCIUM

Rudarsko-geološko-naftni Zbornik, 2004
The silicate-based drilling fluid is a low solids KCl/polymer system with the addition of soluble sodium or potassium silicate to enhance inhibition and wellbore stability.
Nediljka Gaurina-Međimurec, Katarina Simon, Davorin Matanović   +2 more
doaj  

Alkaline attack of boro-alumino-silicate glass: New insights of the molecular mechanism of cold consolidation and new applications

Open Ceramics
This paper focuses on the activation of boro-alumino-silicate glass from discarded pharmaceutical containers as fine powders suspended in relatively diluted alkaline solutions (2.5 M NaOH/KOH), followed by drying at 40 °C for 7 days. A specific molecular
Giulia Tameni, Diana Lago, Hana Kaňková, Lenka Buňová, Jozef Kraxner, Dušan Galusek, Daniel M. Dawson, Sharon E. Ashbrook, Enrico Bernardo   +8 more
doaj   +1 more source

Characterization and Modeling of Industrial Phosphoric Acids' Rheological Behavior: Impact of Magnesium Monoxide on Viscosity

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study investigates the rheological behavior of industrial phosphoric acids (H3PO4) produced at the JORF–LASFAR phosphoric plant in Morocco, with P2O5 concentrations of 18%, 29%, 42%, and 54%. Rheological measurements were performed using a rotary cylinder rheometer over a shear rate range of 1–1000 s−1.
Hamza Belbsir, Abderrahim Benzaouia, Said Kounbach, Abdelghani Laamaoui, Said Laassiri, Khalil El‐Hami, Rachid Benhida   +6 more
wiley   +1 more source

Effect of Temperature and Atmosphere on Agglomeration of Bed Particles in a Bubbling Fluidised Bed Burning Na‐Enriched Coal

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Agglomeration of bed materials during circulating fluidised bed (CFB) combustion or gasification of high‐alkali fuel is a practical challenge in industrial practice. This work investigates experimentally the effect of temperatures (700°C–900°C) and atmosphere (air equivalence ratios 1.61–0.53) on agglomeration in a lab‐scale bubbling fluidised
Zipeng Guo, Jianbo Li, Xiaofei Long, Quanhai Wang, Xiaofeng Lu   +4 more
wiley   +1 more source