Fate of diclofenac in wetland mesocosms planted with Scirpus validus
Uptake and accumulation of the pharmaceutical compound, diclofenac by the macrophyte Scirpus validus was measured in hydroponic solutions with 0.5–2.0 mg L−1 of diclofenac added for a maximum exposure period of 21 d. Findings showed that diclofenac can be reduced significantly (80%) by photodegradat...
Saved in:
Main Authors: | , , , , , |
---|---|
Other Authors: | |
Format: | Article |
Language: | English |
Published: |
2013
|
Online Access: | https://hdl.handle.net/10356/97965 http://hdl.handle.net/10220/13242 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Nanyang Technological University |
Language: | English |
id |
sg-ntu-dr.10356-97965 |
---|---|
record_format |
dspace |
spelling |
sg-ntu-dr.10356-979652020-03-07T12:48:43Z Fate of diclofenac in wetland mesocosms planted with Scirpus validus Zhang, Dong Qing Hua, Tao Gersberg, Richard M. Zhu, Junfei Ng, Wun Jern Tan, Soon Keat Nanyang Environment and Water Research Institute Uptake and accumulation of the pharmaceutical compound, diclofenac by the macrophyte Scirpus validus was measured in hydroponic solutions with 0.5–2.0 mg L−1 of diclofenac added for a maximum exposure period of 21 d. Findings showed that diclofenac can be reduced significantly (80%) by photodegradation, but diclofenac is also taken up by the plant to levels ranging from 0.17 to 1.49 μg g−1 (fresh weight) in the roots and 0.13–0.49 μg g−1 (fresh weight) in the shoots. Bioaccumulation factors (BAFs) for diclofenac in the shoots (0.17–0.51) were lower than the values calculated in the roots (0.40–1.36). The fact that diclofenac was detected in the shoots demonstrated that diclofenac can be subsequently translocated within the plant after root uptake, although this passive translocation was relatively slow mainly due to diclofenac's high hydrophobicity. This study demonstrates that aquatic plants may contribute directly to the aqueous depletion of emerging organic pollutants in wetlands systems and phytoremediation may be an option for the removal of certain pharmaceutical compounds. 2013-08-27T06:34:50Z 2019-12-06T19:48:52Z 2013-08-27T06:34:50Z 2019-12-06T19:48:52Z 2012 2012 Journal Article Zhang, D. Q., Hua, T., Gersberg, R. M., Zhu, J., Ng, W. J., & Tan, S. K. (2012). Fate of diclofenac in wetland mesocosms planted with Scirpus validus. Ecological Engineering, 49, 59-64. https://hdl.handle.net/10356/97965 http://hdl.handle.net/10220/13242 10.1016/j.ecoleng.2012.08.018 en Ecological engineering |
institution |
Nanyang Technological University |
building |
NTU Library |
country |
Singapore |
collection |
DR-NTU |
language |
English |
description |
Uptake and accumulation of the pharmaceutical compound, diclofenac by the macrophyte Scirpus validus was measured in hydroponic solutions with 0.5–2.0 mg L−1 of diclofenac added for a maximum exposure period of 21 d. Findings showed that diclofenac can be reduced significantly (80%) by photodegradation, but diclofenac is also taken up by the plant to levels ranging from 0.17 to 1.49 μg g−1 (fresh weight) in the roots and 0.13–0.49 μg g−1 (fresh weight) in the shoots. Bioaccumulation factors (BAFs) for diclofenac in the shoots (0.17–0.51) were lower than the values calculated in the roots (0.40–1.36). The fact that diclofenac was detected in the shoots demonstrated that diclofenac can be subsequently translocated within the plant after root uptake, although this passive translocation was relatively slow mainly due to diclofenac's high hydrophobicity. This study demonstrates that aquatic plants may contribute directly to the aqueous depletion of emerging organic pollutants in wetlands systems and phytoremediation may be an option for the removal of certain pharmaceutical compounds. |
author2 |
Nanyang Environment and Water Research Institute |
author_facet |
Nanyang Environment and Water Research Institute Zhang, Dong Qing Hua, Tao Gersberg, Richard M. Zhu, Junfei Ng, Wun Jern Tan, Soon Keat |
format |
Article |
author |
Zhang, Dong Qing Hua, Tao Gersberg, Richard M. Zhu, Junfei Ng, Wun Jern Tan, Soon Keat |
spellingShingle |
Zhang, Dong Qing Hua, Tao Gersberg, Richard M. Zhu, Junfei Ng, Wun Jern Tan, Soon Keat Fate of diclofenac in wetland mesocosms planted with Scirpus validus |
author_sort |
Zhang, Dong Qing |
title |
Fate of diclofenac in wetland mesocosms planted with Scirpus validus |
title_short |
Fate of diclofenac in wetland mesocosms planted with Scirpus validus |
title_full |
Fate of diclofenac in wetland mesocosms planted with Scirpus validus |
title_fullStr |
Fate of diclofenac in wetland mesocosms planted with Scirpus validus |
title_full_unstemmed |
Fate of diclofenac in wetland mesocosms planted with Scirpus validus |
title_sort |
fate of diclofenac in wetland mesocosms planted with scirpus validus |
publishDate |
2013 |
url |
https://hdl.handle.net/10356/97965 http://hdl.handle.net/10220/13242 |
_version_ |
1681038848518258688 |