Improved treatment approach for the removal of aromatic compounds using polymeric beads in Fenton pretreatment and biological oxidation
An improved approach based on the use of iron-doped polymeric beads (IPB) as Fenton catalyst in the pretreatment and biomass-doped polymeric bead (BPB) in the biological oxidation has been reported for the removal of different aromatic mixtures present as pollutants in the aqueous solutions. Degradation has been investigated at fixed loading of IPB as 2.5 % weight basis and varying loading of hydrogen peroxide so as to understand the effect of oxidant loading on the extent of degradation. It has been observed that the maximum removal efficiency as 75.5, 81.4, and 59.1 % was obtained for the benzene-toluene-naphthalene-xylene (BTNX), benzene-toluene-ethylbenzene-xylene (BTEX), and benzene-toluene-naphthalene-p-nitrophenol (BTNp-NP) mixtures, respectively, at a 40-min pretreatment and optimum pH of 3.5. The biodegradability index was also observed in the favorable range of 0.4 to 0.5 after the pretreatment at optimum H2O2 loading of 1.5 g L-1. Maximum COD removal efficiency of 99.2, 99.3, and 99.6 % was obtained using the biological oxidation treatment for 40 h for the case of BTNX, BTEX, and BTNp-NP mixtures, respectively. Analysis of kinetic models revealed that degradation followed three distinct stages based on fitting of the three-stage model and BPB was found to be more efficient as compared to the primary activated sludge (PAS) and modified activated sludge (MAS). Reusability studies confirmed that both IPB and BPB were effective over many cycles giving stable performance during degradation without leaching of Fe3+ ions into the solution.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2016 |
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| Erschienen: |
2016 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:23 |
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| Enthalten in: |
Environmental science and pollution research international - 23(2016), 20 vom: 10. Okt., Seite 20281-20296 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Ramteke, Lokeshkumar P [VerfasserIn] |
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| Anmerkungen: |
Date Completed 27.02.2017 Date Revised 02.12.2018 published: Print-Electronic Citation Status MEDLINE |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM262705923 |
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| 245 | 1 | 0 | |a Improved treatment approach for the removal of aromatic compounds using polymeric beads in Fenton pretreatment and biological oxidation |
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| 500 | |a Date Completed 27.02.2017 | ||
| 500 | |a Date Revised 02.12.2018 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a An improved approach based on the use of iron-doped polymeric beads (IPB) as Fenton catalyst in the pretreatment and biomass-doped polymeric bead (BPB) in the biological oxidation has been reported for the removal of different aromatic mixtures present as pollutants in the aqueous solutions. Degradation has been investigated at fixed loading of IPB as 2.5 % weight basis and varying loading of hydrogen peroxide so as to understand the effect of oxidant loading on the extent of degradation. It has been observed that the maximum removal efficiency as 75.5, 81.4, and 59.1 % was obtained for the benzene-toluene-naphthalene-xylene (BTNX), benzene-toluene-ethylbenzene-xylene (BTEX), and benzene-toluene-naphthalene-p-nitrophenol (BTNp-NP) mixtures, respectively, at a 40-min pretreatment and optimum pH of 3.5. The biodegradability index was also observed in the favorable range of 0.4 to 0.5 after the pretreatment at optimum H2O2 loading of 1.5 g L-1. Maximum COD removal efficiency of 99.2, 99.3, and 99.6 % was obtained using the biological oxidation treatment for 40 h for the case of BTNX, BTEX, and BTNp-NP mixtures, respectively. Analysis of kinetic models revealed that degradation followed three distinct stages based on fitting of the three-stage model and BPB was found to be more efficient as compared to the primary activated sludge (PAS) and modified activated sludge (MAS). Reusability studies confirmed that both IPB and BPB were effective over many cycles giving stable performance during degradation without leaching of Fe3+ ions into the solution | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Biological oxidation | |
| 650 | 4 | |a Combined treatment | |
| 650 | 4 | |a Kinetic study | |
| 650 | 4 | |a Polymeric beads | |
| 650 | 4 | |a Process intensification | |
| 650 | 7 | |a Fenton's reagent |2 NLM | |
| 650 | 7 | |a Hydrocarbons, Aromatic |2 NLM | |
| 650 | 7 | |a Oxidants |2 NLM | |
| 650 | 7 | |a Polymers |2 NLM | |
| 650 | 7 | |a Sewage |2 NLM | |
| 650 | 7 | |a Water Pollutants, Chemical |2 NLM | |
| 650 | 7 | |a Hydrogen Peroxide |2 NLM | |
| 650 | 7 | |a BBX060AN9V |2 NLM | |
| 650 | 7 | |a Iron |2 NLM | |
| 650 | 7 | |a E1UOL152H7 |2 NLM | |
| 700 | 1 | |a Gogate, Parag R |e verfasserin |4 aut | |
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