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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...

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Main Authors: 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
Format: Article
Language:English
Published: Elsevier Ltd 2020
Subjects:
TP Chemical technology
Online Access:http://umpir.ump.edu.my/id/eprint/28390/1/Simultaneous%20removal%20of%20toxic%20ammonia%20and%20lettuce%20cultivation%20.pdf
http://umpir.ump.edu.my/id/eprint/28390/
https://doi.org/10.1016/j.jhazmat.2020.122610
https://doi.org/10.1016/j.jhazmat.2020.122610
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spelling my.ump.umpir.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 https://doi.org/10.1016/j.jhazmat.2020.122610 https://doi.org/10.1016/j.jhazmat.2020.122610
institution Universiti Malaysia Pahang
building UMP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang
content_source UMP Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
topic TP Chemical technology
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
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.
format Article
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
title 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_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_sort simultaneous removal of toxic ammonia and lettuce cultivation in aquaponic system using microwave pyrolysis biochar
publisher Elsevier Ltd
publishDate 2020
url http://umpir.ump.edu.my/id/eprint/28390/1/Simultaneous%20removal%20of%20toxic%20ammonia%20and%20lettuce%20cultivation%20.pdf
http://umpir.ump.edu.my/id/eprint/28390/
https://doi.org/10.1016/j.jhazmat.2020.122610
https://doi.org/10.1016/j.jhazmat.2020.122610
_version_ 1690371136677740544
score 13.211869

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