The University of Southampton
University of Southampton Institutional Repository

Evaluation of biodegradability and biotoxicity of surfactants in soil

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.
2046-2069
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
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, 31018-31026. (doi:10.1039/c7ra02105d).

Record type: Article

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 - Version of Record
Download (943kB)

More information

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

Catalogue record

Date deposited: 19 Jun 2017 16:30
Last modified: 06 Oct 2020 20:46

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×