ORCID Profile
0000-0002-7606-9704
Current Organisation
University of Nottingham
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Publisher: Elsevier BV
Date: 03-2023
Publisher: American Chemical Society (ACS)
Date: 21-01-2010
DOI: 10.1021/EF900463R
Publisher: Elsevier BV
Date: 07-2016
Publisher: Elsevier BV
Date: 10-2010
Publisher: Elsevier BV
Date: 11-2014
Publisher: Elsevier BV
Date: 2011
Publisher: Elsevier BV
Date: 05-2020
Publisher: Elsevier BV
Date: 10-2018
Publisher: Elsevier BV
Date: 2014
Publisher: Elsevier BV
Date: 2011
Publisher: Elsevier BV
Date: 04-2011
Publisher: Elsevier BV
Date: 03-2017
Publisher: Elsevier BV
Date: 09-2014
Publisher: Elsevier BV
Date: 08-2020
Publisher: Elsevier BV
Date: 06-2019
Publisher: Elsevier BV
Date: 04-2018
Publisher: Elsevier BV
Date: 10-2023
Publisher: Elsevier BV
Date: 12-2019
Publisher: Elsevier BV
Date: 03-2019
Publisher: American Chemical Society (ACS)
Date: 31-08-2010
DOI: 10.1021/EF100314K
Publisher: Elsevier BV
Date: 2016
Publisher: American Chemical Society (ACS)
Date: 19-11-2014
DOI: 10.1021/IE5034045
Publisher: American Chemical Society (ACS)
Date: 31-05-2011
DOI: 10.1021/EF200250C
Publisher: Elsevier BV
Date: 11-2010
Publisher: Elsevier BV
Date: 07-2015
DOI: 10.1016/J.JENVMAN.2015.04.028
Abstract: The production of natural biopolymers as flocculants for water treatment is highly desirable due to their inherent low toxicity and low environmental footprint. In this study, bio-flocculants were extracted from Hibiscus/Abelmoschus esculentus (okra) by using a water extraction method, and the extract yield and its performance in sludge dewatering were evaluated. Single factor experimental design was employed to obtain the optimum conditions for extraction temperature (25-90 °C), time (0.25-5 h), solvent loading (0.5-5 w/w) and agitation speed (0-225 rpm). Results showed that extraction yield was affected non-linearly by all experimental variables, whilst the sludge dewatering ability was only influenced by the temperature of the extraction process. The optimum extraction conditions were obtained at 70 °C, 2 h, solvent loading of 2.5 w/w and agitation at 200 rpm. Under the optimal conditions, the extract yield was 2.38%, which is comparable to the extraction of other polysaccharides (0.69-3.66%). The bio-flocculants displayed >98% removal of suspended solids and 68% water recovery during sludge dewatering, and were shown to be comparable with commercial polyacrylamide flocculants. This work shows that bio-flocculants could offer a feasible alternative to synthetic flocculants for water treatment and sludge dewatering applications, and can be extracted using only water as a solvent, minimising the environmental footprint of the extraction process.
Publisher: IOP Publishing
Date: 05-12-2008
Publisher: Elsevier BV
Date: 06-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3RA46941G
Publisher: Elsevier BV
Date: 06-2017
Publisher: Elsevier BV
Date: 09-2021
Location: United Kingdom of Great Britain and Northern Ireland
Location: United Kingdom of Great Britain and Northern Ireland
Start Date: 2021
End Date: 2026
Funder: Engineering and Physical Sciences Research Council
View Funded ActivityStart Date: 2018
End Date: 2020
Funder: Engineering and Physical Sciences Research Council
View Funded ActivityStart Date: 2016
End Date: 2019
Funder: Engineering and Physical Sciences Research Council
View Funded Activity