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Treatment of CNC industry wastewater by electrocoagulation technology: an application through response surface methodology
- Publication Year :
- 2020
- Publisher :
- TAYLOR & FRANCIS LTD, 2020.
-
Abstract
- WOS: 000474177700001<br />Removal of COD, and several toxic heavy metals (Cu2+ and Ni2+) from CNC (metalworking fluid) wastewater was investigated using electrocoagulation method (EC) with Fe and Al electrodes. The interaction effects of the current density, reaction time and initial pH were analyzed and were correlated to assess the removal efficiencies for COD, copper, and nickel. Coefficient of determination (R-2) and adjusted R-2 was found to be higher than 96.81% and 92.77; 99.01% and 89.94 for all responses at Fe and Al electrodes, respectively. Removal efficiencies were determined to be 95.72%, 96.03%, 95.22% and 97.11%, 98.51%, 92.49% for COD, copper and nickel at iron and aluminum electrodes, respectively under optimum operating conditions. The operational cost of the EC process for COD, copper, and nickel removal, were found to be 2.54, 3.36, 2.50 euro/m(3) for iron electrode and 7.16, 8.95, 8.50 euro/m(3) for aluminum electrode at optimum conditions, respectively. The results provide that The EC process seems to be an effective treatment method for removing COD and several trace heavy metals from the CNC machine (metalworking fluid) wastewater.
- Subjects :
- inorganic chemicals
Materials science
Health, Toxicology and Mutagenesis
medicine.medical_treatment
Soil Science
CNC machine wastewater
heavy metal removal
010501 environmental sciences
01 natural sciences
Electrocoagulation
Analytical Chemistry
response surface methodology
medicine
Environmental Chemistry
Response surface methodology
Waste Management and Disposal
0105 earth and related environmental sciences
Water Science and Technology
Metalworking fluid
010401 analytical chemistry
Public Health, Environmental and Occupational Health
Heavy metals
Pulp and paper industry
Pollution
0104 chemical sciences
Wastewater
electrocoagulation
metalworking fluid
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....00cc94eeb0d856af9751aeb6ae1f183c