Study on Fe-C-Al three-phase micro-electrolysis treatment of low concentration phosphorus wastewater
In this study, the iron-carbon-aluminum (Fe-C-Al) composite filler was prepared by aluminum modification of conventional iron-carbon (Fe-C) micro-electrolysis with a no-burn method. The optimal process conditions for Fe-C-Al three-phase micro-electrolysis treatment of low concentration phosphorus wa...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IWA Publishing
2022-11-01
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| Series: | Water Science and Technology |
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| Online Access: | http://wst.iwaponline.com/content/86/10/2581 |
| _version_ | 1811311466979000320 |
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| author | Baoming Hu Quan Qi Liang Li Yongzhao Huan Zheng Liu Xuqing Liu |
| author_facet | Baoming Hu Quan Qi Liang Li Yongzhao Huan Zheng Liu Xuqing Liu |
| author_sort | Baoming Hu |
| collection | DOAJ |
| description | In this study, the iron-carbon-aluminum (Fe-C-Al) composite filler was prepared by aluminum modification of conventional iron-carbon (Fe-C) micro-electrolysis with a no-burn method. The optimal process conditions for Fe-C-Al three-phase micro-electrolysis treatment of low concentration phosphorus wastewater were determined to be the aluminum metal ratio of 14 wt% and solids dosing of 30 g/L. Under the optimal process conditions, Fe-C-Al three-phase micro-electrolysis was performed for the treatment of low concentration phosphorus wastewater (LCPW) with continuous experiment, while iron-carbon fillers before and after treatment were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results showed that the amount of Fe2+ dissolved in the micro-electrolysis determined the micro-electrolysis phosphorus removal effect, Al promoted the dissolution of Fe2+, and the Fe-C-Al filler had a stable phosphorus removal effect, and the average removal efficiency of phosphorus was 67.40%, which is an average improvement of 29.25% compared with the conventional Fe-C filler. The treatment of LCPW by Fe-C-Al three-phase micro-electrolysis is consistent with a first-order kinetic reaction with apparent activation energy of 38.70 kJ·mol−1, which is controlled by the chemical reaction.
HIGHLIGHTS
The optimal conditions with the dephosphorization efficiency of 92.52% are applied to Al accounts of 14%, total dosage of 30 g·L−1, and reaction temperature of 45 °C.;
The dynamic continuous test shows that the two micro-electrolysis systems have a stable dephosphorization effect.;
The three-phase reaction of Fe-C-Al conforms to the second-order kinetic reaction, and the apparent activation energy is 38.70 kJ·mol−1.; |
| first_indexed | 2024-04-13T10:18:16Z |
| format | Article |
| id | doaj.art-35ef296812854908ae96cb9465ad0adb |
| institution | Directory Open Access Journal |
| issn | 0273-1223 1996-9732 |
| language | English |
| last_indexed | 2024-04-13T10:18:16Z |
| publishDate | 2022-11-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Science and Technology |
| spelling | doaj.art-35ef296812854908ae96cb9465ad0adb2022-12-22T02:50:35ZengIWA PublishingWater Science and Technology0273-12231996-97322022-11-0186102581259210.2166/wst.2022.370370Study on Fe-C-Al three-phase micro-electrolysis treatment of low concentration phosphorus wastewaterBaoming Hu0Quan Qi1Liang Li2Yongzhao Huan3Zheng Liu4Xuqing Liu5 School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430073, China School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430073, China School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430073, China School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430073, China School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430073, China School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430073, China In this study, the iron-carbon-aluminum (Fe-C-Al) composite filler was prepared by aluminum modification of conventional iron-carbon (Fe-C) micro-electrolysis with a no-burn method. The optimal process conditions for Fe-C-Al three-phase micro-electrolysis treatment of low concentration phosphorus wastewater were determined to be the aluminum metal ratio of 14 wt% and solids dosing of 30 g/L. Under the optimal process conditions, Fe-C-Al three-phase micro-electrolysis was performed for the treatment of low concentration phosphorus wastewater (LCPW) with continuous experiment, while iron-carbon fillers before and after treatment were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results showed that the amount of Fe2+ dissolved in the micro-electrolysis determined the micro-electrolysis phosphorus removal effect, Al promoted the dissolution of Fe2+, and the Fe-C-Al filler had a stable phosphorus removal effect, and the average removal efficiency of phosphorus was 67.40%, which is an average improvement of 29.25% compared with the conventional Fe-C filler. The treatment of LCPW by Fe-C-Al three-phase micro-electrolysis is consistent with a first-order kinetic reaction with apparent activation energy of 38.70 kJ·mol−1, which is controlled by the chemical reaction. HIGHLIGHTS The optimal conditions with the dephosphorization efficiency of 92.52% are applied to Al accounts of 14%, total dosage of 30 g·L−1, and reaction temperature of 45 °C.; The dynamic continuous test shows that the two micro-electrolysis systems have a stable dephosphorization effect.; The three-phase reaction of Fe-C-Al conforms to the second-order kinetic reaction, and the apparent activation energy is 38.70 kJ·mol−1.;http://wst.iwaponline.com/content/86/10/2581aluminum-modified micro-electrolysiscontinuous experimentkineticslow concentration phosphorus wastewater |
| spellingShingle | Baoming Hu Quan Qi Liang Li Yongzhao Huan Zheng Liu Xuqing Liu Study on Fe-C-Al three-phase micro-electrolysis treatment of low concentration phosphorus wastewater Water Science and Technology aluminum-modified micro-electrolysis continuous experiment kinetics low concentration phosphorus wastewater |
| title | Study on Fe-C-Al three-phase micro-electrolysis treatment of low concentration phosphorus wastewater |
| title_full | Study on Fe-C-Al three-phase micro-electrolysis treatment of low concentration phosphorus wastewater |
| title_fullStr | Study on Fe-C-Al three-phase micro-electrolysis treatment of low concentration phosphorus wastewater |
| title_full_unstemmed | Study on Fe-C-Al three-phase micro-electrolysis treatment of low concentration phosphorus wastewater |
| title_short | Study on Fe-C-Al three-phase micro-electrolysis treatment of low concentration phosphorus wastewater |
| title_sort | study on fe c al three phase micro electrolysis treatment of low concentration phosphorus wastewater |
| topic | aluminum-modified micro-electrolysis continuous experiment kinetics low concentration phosphorus wastewater |
| url | http://wst.iwaponline.com/content/86/10/2581 |
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