Electrochemical Treatment of Reactive Blue 52 Using Zirconium, Palladium and Graphite Electrode

2013 ◽  
Vol 42 (6) ◽  
pp. 804-808 ◽  
Author(s):  
Milica Jović ◽  
Dragan Manojlović ◽  
Dalibor Stanković ◽  
Marijana Marković ◽  
Ivan Anđelković ◽  
...  
Keyword(s):  
Graphite Electrode ◽  
Electrochemical Treatment

scholarly journals Experimental and mechanistic research on methane adsorption in anthracite modified by electrochemical treatment using selected electrode materials

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Xiaoyu Zhang ◽  
Runxu Zhang ◽  
Tianhe Kang ◽  
Yaoqing Hu ◽  
Chao Li
Keyword(s):  
Free Energy ◽  
Electrode Materials ◽  
Graphite Electrode ◽  
Electrochemical Treatment ◽  
Methane Adsorption ◽  
Aluminum Electrode ◽  
Electrochemical Modification ◽  
Iron Copper ◽  
Methane Extraction ◽  
Adsorption Of Methane

AbstractThe strong adsorption capacity of methane in anthracite can seriously affect the methane extraction. Electrochemical treatment is an effective way to weaken the capacity of methane adsorption in coal. Iron, copper, aluminum and graphite as four kinds of electrode materials were selected to modify anthracite by electrochemical treatment. The adsorption of methane in anthracite, before and after modification, was tested under different adsorption pressure. Based on the changes of pore characteristics and chemical groups of anthracite, the modification process of different electrode materials was analyzed. The results showed that after electrochemical modification, the adsorption of methane decreased, when the graphite electrode was used, the methane adsorption decreases the most, followed by copper and iron electrodes, and the aluminum electrode decreased the least. After electrochemical modification using aluminum, iron, copper and graphite electrodes, the Langmuir constant a reduced by 5.22%, 8.48%, 9.24% and 11.33%, respectively, and the degree of reduction is graphite > copper > iron > aluminum. After electrochemical modification using the graphite electrode, the Langmuir constant b was reduced by 23.52%. On the contrary, after electrochemical modification using the mental electrodes, the Langmuir constant b was increased by about 5%. The surface free energy of anthracite decreased with the adsorption of CH4, the higher the pressure, the more the free energy decreased, and the reduction of surface energy decreased after electrochemical modification. The difference of the electrode reactions was the main reason for the electrochemical results, the Mn+ ions generated in the anode changed the properties of the clay mineral in the coal, and the H+ ions corroded the calcite minerals in the coal. The results obtained from this work indicate that the selection of electrode materials is crucial for the electrochemical modification, and graphite electrode is optimum for anthracite when accelerating methane extraction by electrochemical method.

Bioadsorption of Multiple Heavy Metal Ions by Rhizophora Apiculate sp. and Elaesis Guineensis sp.

2017 ◽  
Vol 14 (1) ◽  
pp. 15
Author(s):  
M.B. Nicodemus Ujih ◽  
Mohammad Isa Mohamadin ◽  
Milla-Armila Asli ◽  
Bebe Norlita Mohammed
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Removal Efficiency ◽  
Heavy Metal Ions ◽  
Agricultural Waste ◽  
Living Organism ◽  
Heavy Metal Concentration ◽  
Industrial Area ◽  
Electrochemical Treatment ◽  
Chemical Oxidation

Heavy metal ions contamination has become more serious which is caused by the releasing of toxic water from industrial area and landfill that are very harmful to all living organism especially human and can even cause death if contaminated in small amount of heavy metal concentration. Currently, peoples are using classic method namely electrochemical treatment, chemical oxidation/reduction, chemical precipitation and reverse osmosis to eliminate the metal ions from toxic water. Unfortunately, these methods are costly and not environmentally friendly as compared to bioadsorption method, where agricultural waste is used as biosorbent to remove heavy metals. Two types of agricultural waste used in this research namely oil palm mesocarp fiber (Elaesis guineensis sp.) (OPMF) and mangrove bark (Rhizophora apiculate sp.) (MB) biomass. Through chemical treatment, the removal efficiency was found to improve. The removal efficiency is examined based on four specification namely dosage, of biosorbent to adsorb four types of metals ion explicitly nickel, lead, copper, and chromium. The research has found that the removal efficiency of MB was lower than OPMF; whereas, the multiple metals ions removal efficiency decreased in the order of Pb2+ > Cu2+ > Ni2+ > Cr2+.

THE MECHANISM OF NITRATES TRANSFORMATION IN THE PROCESSES OF ELECTROCHEMICAL TREATMENT OF NATURAL WATERS

2002 ◽  
Vol 1 (3) ◽  
pp. 341-346
Author(s):  
Viorica Iambartev ◽  
Gheorghe Duca ◽  
Maria Gonta ◽  
Vera Matveevici
Keyword(s):  
Natural Waters ◽  
Electrochemical Treatment

ELECTROCHEMICAL TREATMENT OF MUSTARD WASTEWATER USING CARBON PAPER ELECTRODE

2011 ◽  
Vol 10 (6) ◽  
pp. 813-817
Author(s):  
Qiang He ◽  
Hainan Ai ◽  
Hongxiang Chai ◽  
Xuebin Hu ◽  
Tengrui Long
Keyword(s):  
Electrochemical Treatment ◽  
Carbon Paper

Voltammetric determination of carbaryl in some cereals on an impregnated graphite electrode modified with carbon ink

2019 ◽  
Vol 94 (2) ◽  
pp. 45-50
Author(s):  
A.S. Gashevskaya ◽  
◽  
A.O. Gusar ◽  
Ye.V. Dorozhko ◽  
K.V. Dyorina ◽  
...  
Keyword(s):  
Graphite Electrode ◽  
Voltammetric Determination

Effect of electrode shape and deposition technique on electrochemical treatment of ampicillin in water

2021 ◽  
pp. 101709
Author(s):  
Yasmine Ben Osman ◽  
Jean-Marc Le Meins ◽  
Latifa Bousselmi ◽  
Hanene Akrout ◽  
Dominique Berling
Keyword(s):  
Electrochemical Treatment ◽  
Deposition Technique ◽  
Electrode Shape
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