Results 31 to 40 of about 753,354 (337)

Theory of Chemical ProcessingUsing Pulsed Precipitators [PDF]

open access: yesAustralian Journal of Physics, 1995
A theoretical analysis is given, using methods of gaseous electronics and plasma chemistry, of the removal of S02 and nitrogen oxides from flue gases by use of pulsed electrical corona. Calculations indicate that the rate coefficients in a typical flue gas for the electron dissociation of nitrogen, oxygen and water vapour only become appreciable for ...
JJ Lowke, R Morrow
openaire   +1 more source

Role of the sediments of two tropical dam reservoirs in the flux of metallic elements to the water column [PDF]

open access: yes, 2012
In tropical climates, the high rainfall and temperature, throughout the annual cycle, allow high leaching rates of metallic elements from the basin upstream, which accumulate in the reservoirs.
Barriga, Fernando   +3 more
core   +1 more source

Synthesis and characterization of polypyrrole-coated iron oxide nanoparticles

open access: yesMaterials Research Express, 2021
Conducting polymers are gaining importance in recent years for their remarkable electrical and ionic properties and so, in order to further improve the fundamental properties, they are being integrated with iron oxide (Fe _3 O _4 ) nanoparticles (NPs ...
J Anita Lett   +8 more
doaj   +1 more source

Pilot-Scale Experiences with Aerobic Treatment and Chemical Processes of Industrial Wastewaters from Electronics and Semiconductor Industry

open access: yesEnergies, 2021
TMAH is quaternary ammonium salt, consists of a methylated nitrogen molecule, and is widely used in the electronics industry as a developer and silicon etching agent. This substance is toxic and fatal if ingested. It can also cause skin burns, eye damage,
Valentina Innocenzi   +3 more
doaj   +1 more source

Some characteristics of chemical precipitation [PDF]

open access: yesTellus B, 1983
Two very dissimilar cold frontal occlusions deposited 6 mm and 60 mm of rain respectively at anobservatory in the rural northeastern U.S.A. Water precipitation was carefully observed. in conjunction with other meteorological parameters, through both storm systems.The concentration of several ionic substances were measured in specimens of rain ...
openaire   +2 more sources

Structural, Electrical and Optical Studies of NixCd1-xS (x = 0.8, 0.6, 0.4 and 0.2) Nanoparticle System

open access: yesEast European Journal of Physics, 2023
This paper demonstrates the synthesis of NixCd1-xS (x=0.8,0.6,0.4,0.2) nanoparticles by microwave-assisted chemical precipitation method. The prepared samples were characterized by XRD, EDAX, SEM, UV-VIS, and PL spectroscopy.
Moly M. Rose   +3 more
doaj   +1 more source

RETRASO, a code for modeling reactive transport in saturated and unsaturated porous media [PDF]

open access: yes, 2004
The code RETRASO (REactive TRAnsport of SOlutes) simulates reactive transport of dissolved and gaseous species in non-isothermal saturated or unsaturated problems.
Ayora, Carles   +4 more
core   +3 more sources

Obtención de tetróxido de trimanganeso (Hausmanita) y sulfato de potasio a partir de residuos de laboratorio [PDF]

open access: yesAvances en Química, 2009
Obtainment of trimanganese tetroxide (Hausmanite) and potassium sulfate from laboratory wastes. In the laboratory practices a great amount of solutions is generated that, by their dangerous characteristics, cannot be rejected to the environment.
Katiuska Ramos
doaj  

Long-time evolution of sequestered CO$_2$ in porous media [PDF]

open access: yes, 2014
CO$_2$ sequestration in subsurface reservoirs is important for limiting atmospheric CO$_2$ concentrations. However, a complete physical picture able to predict the structure developing within the porous medium is lacking.
Cohen, Yossi, Rothman, Daniel H.
core   +2 more sources

Recovery of Rubidium and Cesium Resources from Brine of Desalination through t-BAMBP Extraction

open access: yesMetals, 2020
50 billion cubic meters of brine every year creates ecological hazards to the environment. In order to reuse brine efficiently, rubidium and cesium were recovered in this experiment.
Wei-Sheng Chen   +5 more
doaj   +1 more source

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