Optimization of electrocoagulation of instant coffee production wastewater using the response surface methodology
The COD removal efficiency from an instant coffee processing wastewater using electrocoagulation was investigated. For this purpose, the response surface methodology was employed, using central composing design to optimize three of the most important operating variables, i.e., electrolysis time, cur...
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| Format: | Article |
| Language: | English |
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Sciendo
2017-06-01
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| Series: | Polish Journal of Chemical Technology |
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| Online Access: | https://doi.org/10.1515/pjct-2017-0030 |
| _version_ | 1818737945504382976 |
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| author | Bui Ha Manh |
| author_facet | Bui Ha Manh |
| author_sort | Bui Ha Manh |
| collection | DOAJ |
| description | The COD removal efficiency from an instant coffee processing wastewater using electrocoagulation was investigated. For this purpose, the response surface methodology was employed, using central composing design to optimize three of the most important operating variables, i.e., electrolysis time, current density and initial pH. The results based upon statistical analysis showed that the quadratic models for COD removal were significant at very low probability value (<0.0001) and high coefficient of determination (R2 = 0.9621) value. The statistical results also indicated that all the three variables and the interaction between initial pH and electrolysis time were significant on COD abatement. The maximum predicted COD removal using the response function reached 93.3% with electrolysis time of 10 min, current density of 108.3 A/m2 and initial pH of 7.0, respectively. The removal efficiency value was agreed well with the experimental value of COD removal (90.4%) under the optimum conditions. |
| first_indexed | 2024-12-18T01:01:06Z |
| format | Article |
| id | doaj.art-f92858073cc8450c896878b5487ab674 |
| institution | Directory Open Access Journal |
| issn | 1899-4741 |
| language | English |
| last_indexed | 2024-12-18T01:01:06Z |
| publishDate | 2017-06-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Polish Journal of Chemical Technology |
| spelling | doaj.art-f92858073cc8450c896878b5487ab6742022-12-21T21:26:23ZengSciendoPolish Journal of Chemical Technology1899-47412017-06-01192677110.1515/pjct-2017-0030pjct-2017-0030Optimization of electrocoagulation of instant coffee production wastewater using the response surface methodologyBui Ha Manh0Sai Gon University, Department of Environmental Sciences, Ho Chi Minh City, Viet NamThe COD removal efficiency from an instant coffee processing wastewater using electrocoagulation was investigated. For this purpose, the response surface methodology was employed, using central composing design to optimize three of the most important operating variables, i.e., electrolysis time, current density and initial pH. The results based upon statistical analysis showed that the quadratic models for COD removal were significant at very low probability value (<0.0001) and high coefficient of determination (R2 = 0.9621) value. The statistical results also indicated that all the three variables and the interaction between initial pH and electrolysis time were significant on COD abatement. The maximum predicted COD removal using the response function reached 93.3% with electrolysis time of 10 min, current density of 108.3 A/m2 and initial pH of 7.0, respectively. The removal efficiency value was agreed well with the experimental value of COD removal (90.4%) under the optimum conditions.https://doi.org/10.1515/pjct-2017-0030coffee production wastewaterelectrocoagulationoptimizationsurface response method |
| spellingShingle | Bui Ha Manh Optimization of electrocoagulation of instant coffee production wastewater using the response surface methodology Polish Journal of Chemical Technology coffee production wastewater electrocoagulation optimization surface response method |
| title | Optimization of electrocoagulation of instant coffee production wastewater using the response surface methodology |
| title_full | Optimization of electrocoagulation of instant coffee production wastewater using the response surface methodology |
| title_fullStr | Optimization of electrocoagulation of instant coffee production wastewater using the response surface methodology |
| title_full_unstemmed | Optimization of electrocoagulation of instant coffee production wastewater using the response surface methodology |
| title_short | Optimization of electrocoagulation of instant coffee production wastewater using the response surface methodology |
| title_sort | optimization of electrocoagulation of instant coffee production wastewater using the response surface methodology |
| topic | coffee production wastewater electrocoagulation optimization surface response method |
| url | https://doi.org/10.1515/pjct-2017-0030 |
| work_keys_str_mv | AT buihamanh optimizationofelectrocoagulationofinstantcoffeeproductionwastewaterusingtheresponsesurfacemethodology |