Evaluation of biodegradability and biotoxicity of surfactants in soil
Evaluation of biodegradability and biotoxicity of surfactants in soil
In this study, the biodegradability and biotoxicity of four surfactants, i.e. modified heterogeneous alcohol ether with an 8–12 carbon alkylic chain, fatty acid methyl ester ethoxylates, Tween-80 and rhamnolipid (a kind of biosurfactant), under natural soil conditions were investigated. Batch experiments of degradation with an initial concentration of surfactants of 120 mg kg1 in soil were carried out at room temperature varying from 15 C to 22 C. The concentrations of surfactants over time were measured and metabolites of the surfactants were characterized by gas chromatography-mass spectrometry. In addition, the amount of microorganisms in soil over time was measured by using agar plates. The results showed that fatty acid methyl ester ethoxylates had the highest biodegradation rate followed by rhamnolipid, Tween-80 and modified heterogeneous alcohol ether. A biotoxicity assay based on a photobacterium revealed that these surfactants had low toxicity. It is concluded that the fatty acid methyl ester ethoxylates are the most environmentally friendly surfactants among the four surfactants studied.
31018-31026
Li, Guixiang
1a46c1b7-2e76-4965-b790-f72a313a674a
Lan, Guihong
454521c8-d07c-481a-8929-b1730e34b995
Liu, Yongqiang
75adc6f8-aa83-484e-9e87-6c8442e344fa
Chen, Chen
9486d28c-9591-4606-a751-b8fc8e258dcd
Lei, Lin
1d28f5d1-1f99-4c63-8ac7-da0c85a608d7
Du, Jiao
1a3ada16-b181-4e28-873a-27b12aec8d6c
2017
Li, Guixiang
1a46c1b7-2e76-4965-b790-f72a313a674a
Lan, Guihong
454521c8-d07c-481a-8929-b1730e34b995
Liu, Yongqiang
75adc6f8-aa83-484e-9e87-6c8442e344fa
Chen, Chen
9486d28c-9591-4606-a751-b8fc8e258dcd
Lei, Lin
1d28f5d1-1f99-4c63-8ac7-da0c85a608d7
Du, Jiao
1a3ada16-b181-4e28-873a-27b12aec8d6c
Li, Guixiang, Lan, Guihong, Liu, Yongqiang, Chen, Chen, Lei, Lin and Du, Jiao
(2017)
Evaluation of biodegradability and biotoxicity of surfactants in soil.
RSC Advances, 7, .
(doi:10.1039/c7ra02105d).
Abstract
In this study, the biodegradability and biotoxicity of four surfactants, i.e. modified heterogeneous alcohol ether with an 8–12 carbon alkylic chain, fatty acid methyl ester ethoxylates, Tween-80 and rhamnolipid (a kind of biosurfactant), under natural soil conditions were investigated. Batch experiments of degradation with an initial concentration of surfactants of 120 mg kg1 in soil were carried out at room temperature varying from 15 C to 22 C. The concentrations of surfactants over time were measured and metabolites of the surfactants were characterized by gas chromatography-mass spectrometry. In addition, the amount of microorganisms in soil over time was measured by using agar plates. The results showed that fatty acid methyl ester ethoxylates had the highest biodegradation rate followed by rhamnolipid, Tween-80 and modified heterogeneous alcohol ether. A biotoxicity assay based on a photobacterium revealed that these surfactants had low toxicity. It is concluded that the fatty acid methyl ester ethoxylates are the most environmentally friendly surfactants among the four surfactants studied.
Text
Evaluation of biodegradability of sufarctants in soil
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Accepted/In Press date: 22 May 2017
e-pub ahead of print date: 15 June 2017
Published date: 2017
Organisations:
Southampton Marine & Maritime Institute, Water & Environmental Engineering Group
Identifiers
Local EPrints ID: 411310
URI: http://eprints.soton.ac.uk/id/eprint/411310
ISSN: 2046-2069
PURE UUID: b863b902-becd-45b0-9291-457a6fd1d11c
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Date deposited: 19 Jun 2017 16:30
Last modified: 16 Mar 2024 04:15
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Author:
Guixiang Li
Author:
Guihong Lan
Author:
Chen Chen
Author:
Lin Lei
Author:
Jiao Du
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