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Elmolla, Emad S.
- Adsorption of Reactive Dyes Remazol Red F-3B and Remazol Blue from Aqueous Solution by Coconut Coir Activated Carbon
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Authors
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1 Deptt. of Civil Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak, MY
2 Deptt. of Civil Engineering, Al-Azhar University, Cairo, EG
1 Deptt. of Civil Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak, MY
2 Deptt. of Civil Engineering, Al-Azhar University, Cairo, EG
Source
Nature Environment and Pollution Technology, Vol 10, No 2 (2011), Pagination: 193-196Abstract
Activated carbon was prepared from coconut coir and adsorption of reactive dyes Remazol Red F-3B and Remazol Blue by the activated carbon was examined. Batch adsorption test showed that extent of dye adsorption was dependent on dye concentration, contact time, pH and carbon dose. Equilibrium adsorption was attained in 3 h and maximum adsorption occurred in the acidic pH range of 1 to 3. Adsorption capacity of the activated carbon for the dyes was evaluated by batch equilibrium test and compared with that of a commercial activated carbon. According to Langmuir and Freundlich adsorption isotherms, the coconut coir activated carbon showed higher capacity for adsorption of Remazol Red F-3B than that of the commercial activated carbon. For Remazol Blue, both the activated carbons showed comparable adsorption capacity. Coconut coir activated carbon is a suitable substitute for commercial activated carbon in the removal of reactive dyes from aqueous solution.Keywords
Adsorption, Coconut Coir, Reactive Dyes, Activated Carbon, Langmuir and Freundlich, Isotherms.Full Text
- Photo-Fenton Treatment of Antibiotic Wastewater
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Authors
Affiliations
1 Department of Civil Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskander, 31750 Tronoh, Perak, MY
1 Department of Civil Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskander, 31750 Tronoh, Perak, MY
Source
Nature Environment and Pollution Technology, Vol 9, No 2 (2010), Pagination: 365-370Abstract
The study examined photo-Fenton treatment of an antibiotic wastewater containing amoxicillin and cloxacillin, and evaluated the effect of operating conditions (H2O2/COD molar ratio and H2O2/Fe2+molar ratio) on biodegradability (BOD5/COD ratio) improvement and mineralization. The optimum operating conditions for treatment of the antibiotic wastewater was observed to be H2O2/COD molar ratio 2.5 and H2O2/Fe2+ molar ratio 20 (COD/H2O2/Fe2+ molar ratio 1/2.5/0.125) at pH 3 and reaction time 30 min. Under optimum operating conditions, complete degradation of amoxicillin and cloxacillin occurred in one minute, biodegradability improved from 0.09 to 0.50 ± 0.01 in 30 min, and COD and DOC removal were 67 ± 1% and 51 ± 2%, respectively in 30 min. The study indicated that the photo-Fenton process can be used as pretreatment for antibiotic degradation and biodegradability improvement of antibiotic wastewater containing amoxicillin and cloxacillin.Keywords
Antibiotic Wastewater, Amoxicillin, Biodegradability, Cloxacillin, Photo-Fenton Treatment.Full Text