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Removal of malachite green from aqueous solutions by electrocoagulation/peanut shell adsorption coupling in a batch system
- Source :
- Water Science and Technology. 75:1830-1838
- Publication Year :
- 2017
- Publisher :
- IWA Publishing, 2017.
-
Abstract
- A electrocoagulation (EC)/peanut shell (PS) adsorption coupling technique was studied for the removal of malachite green (MG) in our present work. The addition of an appropriate PS dosage (5 g/L) resulted in remarkable increase in the removal efficiency of MG at lower current density and shorter operating time compared with the conventional EC process. The effect of current density, pH of MG solution, dosage of PS and initial concentration of MG were also investigated. The maximum removal efficiency of MG was 98% under optimum conditions in 5 min. And it was 23% higher than that in EC process. Furthermore, the unit energy demand (UED) and the unit electrode material demand (UEMD) were calculated and discussed. The results demonstrated that the EC/PS adsorption coupling method achieved a reduction of 94% UED and UEMD compared with EC process.
- Subjects :
- Environmental Engineering
Arachis
medicine.medical_treatment
02 engineering and technology
010501 environmental sciences
01 natural sciences
Electrocoagulation
chemistry.chemical_compound
Adsorption
Rosaniline Dyes
medicine
Malachite green
Electrodes
0105 earth and related environmental sciences
Water Science and Technology
Waste Products
Aqueous solution
Chromatography
Hydrogen-Ion Concentration
021001 nanoscience & nanotechnology
Coupling (electronics)
chemistry
Electrode
Batch processing
0210 nano-technology
Current density
Water Pollutants, Chemical
Nuclear chemistry
Subjects
Details
- ISSN :
- 19969732 and 02731223
- Volume :
- 75
- Database :
- OpenAIRE
- Journal :
- Water Science and Technology
- Accession number :
- edsair.doi.dedup.....58d77b075c130214ae37c125806cb55d