Non-thermal discharge plasma promoted redox transformation of arsenic(III) and chromium(VI) in an aqueous medium

2017 ◽  
Vol 329 ◽  
pp. 211-219 ◽  
Author(s):  
L. Chandana ◽  
Ch. Subrahmanyam
Keyword(s):  
Aqueous Medium ◽  
Discharge Plasma ◽  
Thermal Discharge ◽  
Redox Transformation ◽  
Chromium Vi

Chromium(VI) removal from aqueous medium by maize cane and agave bagasse biomasses

2016 ◽  
Vol 35 (6) ◽  
pp. 704-711 ◽  
Author(s):  
M. J. Marín-Allende ◽  
E. T. Romero-Guzmán ◽  
J. J. Ramírez-García ◽  
L. R. Reyes-Gutiérrez
Keyword(s):  
Aqueous Medium ◽  
Chromium Vi

Use of polyethylene films photografted with 2-(dimethylamino)ethyl methacrylate as a potential adsorbent for removal of chromium (VI) from aqueous medium

2016 ◽  
Vol 133 (18) ◽  
pp. n/a-n/a ◽  
Author(s):  
Hiromichi Asamoto ◽  
Yuji Kimura ◽  
Yohei Ishiguro ◽  
Hiroaki Minamisawa ◽  
Kazunori Yamada
Keyword(s):  
Aqueous Medium ◽  
Polyethylene Films ◽  
Ethyl Methacrylate ◽  
Chromium Vi

Enhanced adsorption of chromium (VI) from aqueous medium by basic nanohydroxyapatite/chitosan composite based on egg shell

2020 ◽  
Vol 206 ◽  
pp. 235-249
Author(s):  
Asaad F. Hassan ◽  
Gehan A. El-Naggar ◽  
Amany G. Braish ◽  
Mohamed F. Amira ◽  
Laila M. Alshandoudi
Keyword(s):  
Aqueous Medium ◽  
Chromium Vi ◽  
Egg Shell ◽  
Enhanced Adsorption ◽  
Chitosan Composite

Characteristics of Nitric Monoxide Generation Using High Frequency Silent Discharge

2003 ◽  
Vol 6 (1) ◽  
Author(s):  
Yukihiko Yamagata ◽  
Ken-ichi Murayama ◽  
Tomoaki Ikegami ◽  
Kenji Ebihara
Keyword(s):  
Fluorescence Spectroscopy ◽  
High Frequency ◽  
Discharge Plasma ◽  
Laser Induced Fluorescence ◽  
Electrode Configuration ◽  
Thermal Discharge ◽  
Silent Discharge ◽  
Band Transition ◽  
Discharge Laser ◽  
Nitric Monoxide

AbstractWe have studied the nitric monoxide (NO) generation using non-thermal discharge plasma. In order to make clear the influence of the electrode configuration on the generation characteristics of the NO molecule, a multiple-needles - plane and a plane - plane electrodes were used to generate the high frequency (10 kHz) silent discharge. Laser-induced fluorescence spectroscopy was applied to the y band transition (X

scholarly journals Assessment of Untreated Coffee Wastes for the Removal of Chromium (VI) from Aqueous Medium

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Ilyasse Loulidi ◽  
Fatima Boukhlifi ◽  
Mbarka Ouchabi ◽  
Abdelouahed Amar ◽  
Maria Jabri ◽  
...  
Keyword(s):  
Aqueous Medium ◽  
Cost Estimation ◽  
Aquatic Ecosystems ◽  
Adsorption Equilibrium ◽  
Low Cost ◽  
Optimum Conditions ◽  
Spent Coffee Grounds ◽  
Order Model ◽  
Chromium Vi ◽  
Coffee Grounds

Industrial discharges loaded with heavy metals present several problems for aquatic ecosystems and human health. In this context, the present study aims to evaluate the potential of raw spent coffee grounds to remove chromium from an aqueous medium. A structural and textural study of coffee grounds was carried out by FTIR, XRD, and TGA analysis. The optimum conditions for the removal of Cr(VI), for a solution with an initial concentration of 100 mg/l, were adsorbent dose 2.5 g/l, pH 4.0, and contact time 90 min. The adsorption equilibrium results show that the Langmuir isotherm best describes the process with an adsorption capacity of 42.9 mg/g and that the adsorption kinetics follows the pseudosecond-order model. The calculated thermodynamic parameters showed that the adsorption is exothermic and spontaneous. The activation energy value (Ea) indicated that the retention is physisorptive in nature. The regeneration of the adsorbent was carried out by three eluents, among which HCl was the best. Finally, a brief cost estimation showed the great potential of coffee grounds as a low-cost adsorbent.

scholarly journals Effect of temperature on methylene blue decolorization in aqueous medium in electrical discharge plasma reactor

2011 ◽  
Vol 22 (9) ◽  
pp. 1669-1678 ◽  
Author(s):  
Luís O. de B Benetoli ◽  
Bruno M Cadorin ◽  
Cícero da S Postiglione ◽  
Ivan G. de Souza ◽  
Nito A Debacher
Keyword(s):  
Methylene Blue ◽  
Aqueous Medium ◽  
Electrical Discharge ◽  
Discharge Plasma ◽  
Plasma Reactor ◽  
Effect Of Temperature
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