Effect of dilution and operating parameters on ammonia removal from scheduled waste landfill leachate in a lab-scale ammonia stripping reactor
A lab-scale ammonia stripping reactor was used to treat raw and diluted (1:1) scheduled waste landfill (SWL) leachate containing ammonia-nitrogen (NH3-N). Operating parameters such as air-liquid ratio, hydrated lime [Ca(OH)2] dosage, types of packing materials and packing heights were investigated w...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2017
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| Online Access: | http://psasir.upm.edu.my/id/eprint/61562/ http://psasir.upm.edu.my/id/eprint/61562/1/Effect%20of%20dilution%20and%20operating%20parameters%20on%20ammonia%20removal%20from%20scheduled%20waste%20landfill%20leachate%20in%20a%20lab-scale%20ammonia%20stripping%20reactor.pdf |
| _version_ | 1848854437054906368 |
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| author | M. L., Nurul Hanira Che Man, Hasfalina M., Rashid Abdullah, Luqman Chuah Abdullah, A. M. |
| author_facet | M. L., Nurul Hanira Che Man, Hasfalina M., Rashid Abdullah, Luqman Chuah Abdullah, A. M. |
| author_sort | M. L., Nurul Hanira |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | A lab-scale ammonia stripping reactor was used to treat raw and diluted (1:1) scheduled waste landfill (SWL) leachate containing ammonia-nitrogen (NH3-N). Operating parameters such as air-liquid ratio, hydrated lime [Ca(OH)2] dosage, types of packing materials and packing heights were investigated with central composite design (CCD) of response surface methodology (RSM) was used to optimize the parameters affecting NH3-N removal from the leachate. The percentage removal on turbidity, colour and phosphate were also evaluated in this study. It was observed that the optimal conditions obtained from desirable response (NH3-N removal) for raw leachate were predicted at air–liquid ratio of 70, Ca(OH)2 dosage of 5 gL-1, packing height of 60 cm and types of packing material was number 3 (nonwoven polyester) while for diluted leachate these were 70, 6 gL-1, 60 cm and Type 3 (nonwoven polyester), respectively. Quadratic RSM predicted the maximum NH3-N removal to be 78% for raw leachate and 81% for diluted leachate at these optimal conditions concurred with the experiment which successfully removed 76% and 80% of NH3-N, respectively. However, higher removal efficiencies of turbidity (97%), colour (88%) and phosphate (93%) was observed in the treatment with diluted leachate compared to raw leachate merely up to 55%, 34% and 49%, respectively. The finding showed that the difference in the removal of NH3-N in diluted and raw SWL leachate was insignificant. However, turbidity, colour and phosphate showed a significant reduction in the diluted leachate during the treatment. The study suggests that the dilution of SWL leachate does not present a significant effect on the removal of ammonia in the stripping reactor. |
| first_indexed | 2025-11-15T11:09:51Z |
| format | Article |
| id | upm-61562 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T11:09:51Z |
| publishDate | 2017 |
| publisher | IOP Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-615622022-05-25T02:10:40Z http://psasir.upm.edu.my/id/eprint/61562/ Effect of dilution and operating parameters on ammonia removal from scheduled waste landfill leachate in a lab-scale ammonia stripping reactor M. L., Nurul Hanira Che Man, Hasfalina M., Rashid Abdullah, Luqman Chuah Abdullah, A. M. A lab-scale ammonia stripping reactor was used to treat raw and diluted (1:1) scheduled waste landfill (SWL) leachate containing ammonia-nitrogen (NH3-N). Operating parameters such as air-liquid ratio, hydrated lime [Ca(OH)2] dosage, types of packing materials and packing heights were investigated with central composite design (CCD) of response surface methodology (RSM) was used to optimize the parameters affecting NH3-N removal from the leachate. The percentage removal on turbidity, colour and phosphate were also evaluated in this study. It was observed that the optimal conditions obtained from desirable response (NH3-N removal) for raw leachate were predicted at air–liquid ratio of 70, Ca(OH)2 dosage of 5 gL-1, packing height of 60 cm and types of packing material was number 3 (nonwoven polyester) while for diluted leachate these were 70, 6 gL-1, 60 cm and Type 3 (nonwoven polyester), respectively. Quadratic RSM predicted the maximum NH3-N removal to be 78% for raw leachate and 81% for diluted leachate at these optimal conditions concurred with the experiment which successfully removed 76% and 80% of NH3-N, respectively. However, higher removal efficiencies of turbidity (97%), colour (88%) and phosphate (93%) was observed in the treatment with diluted leachate compared to raw leachate merely up to 55%, 34% and 49%, respectively. The finding showed that the difference in the removal of NH3-N in diluted and raw SWL leachate was insignificant. However, turbidity, colour and phosphate showed a significant reduction in the diluted leachate during the treatment. The study suggests that the dilution of SWL leachate does not present a significant effect on the removal of ammonia in the stripping reactor. IOP Publishing 2017 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/61562/1/Effect%20of%20dilution%20and%20operating%20parameters%20on%20ammonia%20removal%20from%20scheduled%20waste%20landfill%20leachate%20in%20a%20lab-scale%20ammonia%20stripping%20reactor.pdf M. L., Nurul Hanira and Che Man, Hasfalina and M., Rashid and Abdullah, Luqman Chuah and Abdullah, A. M. (2017) Effect of dilution and operating parameters on ammonia removal from scheduled waste landfill leachate in a lab-scale ammonia stripping reactor. IOP Conference Series: Materials Science and Engineering, 206. art. no. 012076. pp. 1-10. ISSN 1757-8981 https://iopscience.iop.org/article/10.1088/1757-899X/206/1/012076 10.1088/1757-899X/206/1/012076 |
| spellingShingle | M. L., Nurul Hanira Che Man, Hasfalina M., Rashid Abdullah, Luqman Chuah Abdullah, A. M. Effect of dilution and operating parameters on ammonia removal from scheduled waste landfill leachate in a lab-scale ammonia stripping reactor |
| title | Effect of dilution and operating parameters on ammonia removal from scheduled waste landfill leachate in a lab-scale ammonia stripping reactor |
| title_full | Effect of dilution and operating parameters on ammonia removal from scheduled waste landfill leachate in a lab-scale ammonia stripping reactor |
| title_fullStr | Effect of dilution and operating parameters on ammonia removal from scheduled waste landfill leachate in a lab-scale ammonia stripping reactor |
| title_full_unstemmed | Effect of dilution and operating parameters on ammonia removal from scheduled waste landfill leachate in a lab-scale ammonia stripping reactor |
| title_short | Effect of dilution and operating parameters on ammonia removal from scheduled waste landfill leachate in a lab-scale ammonia stripping reactor |
| title_sort | effect of dilution and operating parameters on ammonia removal from scheduled waste landfill leachate in a lab-scale ammonia stripping reactor |
| url | http://psasir.upm.edu.my/id/eprint/61562/ http://psasir.upm.edu.my/id/eprint/61562/ http://psasir.upm.edu.my/id/eprint/61562/ http://psasir.upm.edu.my/id/eprint/61562/1/Effect%20of%20dilution%20and%20operating%20parameters%20on%20ammonia%20removal%20from%20scheduled%20waste%20landfill%20leachate%20in%20a%20lab-scale%20ammonia%20stripping%20reactor.pdf |