Simultaneous removal of toxic ammonia and lettuce cultivation in aquaponic system using microwave pyrolysis biochar
This study examined an aquaponic approach of circulating water containing ammonia excretions from African catfish grown in an aquaculture tank for bacterial conversion into nitrates, which then acted as a nutrient substance to cultivate lettuce in hydroponic tank. We found that microwave pyrolysis b...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier Ltd
2020
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| Online Access: | http://umpir.ump.edu.my/id/eprint/28390/ http://umpir.ump.edu.my/id/eprint/28390/1/Simultaneous%20removal%20of%20toxic%20ammonia%20and%20lettuce%20cultivation%20.pdf |
| _version_ | 1848823040635305984 |
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| author | Su, Man Huan Elfina, Azwar Yang, Ya Feng Sonne, Christian Yek, Peter Nai Yuh Liew, Rock Keey Cheng, C. K. Show, Pau Loke Lam, Su Shiung |
| author_facet | Su, Man Huan Elfina, Azwar Yang, Ya Feng Sonne, Christian Yek, Peter Nai Yuh Liew, Rock Keey Cheng, C. K. Show, Pau Loke Lam, Su Shiung |
| author_sort | Su, Man Huan |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | This study examined an aquaponic approach of circulating water containing ammonia excretions from African catfish grown in an aquaculture tank for bacterial conversion into nitrates, which then acted as a nutrient substance to cultivate lettuce in hydroponic tank. We found that microwave pyrolysis biochar (450 g) having microporous (1.803 nm) and high BET surface area (419 m2/g) was suitable for use as biological carrier to grow nitrifying bacteria (63 g of biofilm mass) that treated the water quality through removing the ammonia (67%) and total suspended solids (68%), resulting in low concentration of remaining ammonia (0.42 mg/L) and total suspended solid (59.40 mg/L). It also increased the pH (6.8), converted the ammonia into nitrate (29.7 mg/L), and increased the nitrogen uptake by the lettuce (110 mg of nitrogen per plant), resulting in higher growth in lettuce (0.0562 %/day) while maintaining BOD5 level (3.94 mg/L) at acceptable level and 100% of catfish survival rate. Our results demonstrated that microwave pyrolysis biochar can be a promising solution for growing nitrifying bacteria in aquaponic system for simultaneous toxic ammonia remediation and generation of nitrate for growing vegetable in aquaculture industry. |
| first_indexed | 2025-11-15T02:50:49Z |
| format | Article |
| id | ump-28390 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T02:50:49Z |
| publishDate | 2020 |
| publisher | Elsevier Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-283902021-01-22T08:05:22Z http://umpir.ump.edu.my/id/eprint/28390/ Simultaneous removal of toxic ammonia and lettuce cultivation in aquaponic system using microwave pyrolysis biochar Su, Man Huan Elfina, Azwar Yang, Ya Feng Sonne, Christian Yek, Peter Nai Yuh Liew, Rock Keey Cheng, C. K. Show, Pau Loke Lam, Su Shiung TP Chemical technology This study examined an aquaponic approach of circulating water containing ammonia excretions from African catfish grown in an aquaculture tank for bacterial conversion into nitrates, which then acted as a nutrient substance to cultivate lettuce in hydroponic tank. We found that microwave pyrolysis biochar (450 g) having microporous (1.803 nm) and high BET surface area (419 m2/g) was suitable for use as biological carrier to grow nitrifying bacteria (63 g of biofilm mass) that treated the water quality through removing the ammonia (67%) and total suspended solids (68%), resulting in low concentration of remaining ammonia (0.42 mg/L) and total suspended solid (59.40 mg/L). It also increased the pH (6.8), converted the ammonia into nitrate (29.7 mg/L), and increased the nitrogen uptake by the lettuce (110 mg of nitrogen per plant), resulting in higher growth in lettuce (0.0562 %/day) while maintaining BOD5 level (3.94 mg/L) at acceptable level and 100% of catfish survival rate. Our results demonstrated that microwave pyrolysis biochar can be a promising solution for growing nitrifying bacteria in aquaponic system for simultaneous toxic ammonia remediation and generation of nitrate for growing vegetable in aquaculture industry. Elsevier Ltd 2020-04-06 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/28390/1/Simultaneous%20removal%20of%20toxic%20ammonia%20and%20lettuce%20cultivation%20.pdf Su, Man Huan and Elfina, Azwar and Yang, Ya Feng and Sonne, Christian and Yek, Peter Nai Yuh and Liew, Rock Keey and Cheng, C. K. and Show, Pau Loke and Lam, Su Shiung (2020) Simultaneous removal of toxic ammonia and lettuce cultivation in aquaponic system using microwave pyrolysis biochar. Journal of Hazardous Materials, 396 (122610). pp. 1-10. ISSN 0304-3894. (Published) https://doi.org/10.1016/j.jhazmat.2020.122610 https://doi.org/10.1016/j.jhazmat.2020.122610 |
| spellingShingle | TP Chemical technology Su, Man Huan Elfina, Azwar Yang, Ya Feng Sonne, Christian Yek, Peter Nai Yuh Liew, Rock Keey Cheng, C. K. Show, Pau Loke Lam, Su Shiung Simultaneous removal of toxic ammonia and lettuce cultivation in aquaponic system using microwave pyrolysis biochar |
| title | Simultaneous removal of toxic ammonia and lettuce cultivation in aquaponic system using microwave pyrolysis biochar |
| title_full | Simultaneous removal of toxic ammonia and lettuce cultivation in aquaponic system using microwave pyrolysis biochar |
| title_fullStr | Simultaneous removal of toxic ammonia and lettuce cultivation in aquaponic system using microwave pyrolysis biochar |
| title_full_unstemmed | Simultaneous removal of toxic ammonia and lettuce cultivation in aquaponic system using microwave pyrolysis biochar |
| title_short | Simultaneous removal of toxic ammonia and lettuce cultivation in aquaponic system using microwave pyrolysis biochar |
| title_sort | simultaneous removal of toxic ammonia and lettuce cultivation in aquaponic system using microwave pyrolysis biochar |
| topic | TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/28390/ http://umpir.ump.edu.my/id/eprint/28390/ http://umpir.ump.edu.my/id/eprint/28390/ http://umpir.ump.edu.my/id/eprint/28390/1/Simultaneous%20removal%20of%20toxic%20ammonia%20and%20lettuce%20cultivation%20.pdf |