Dew harvesting efficiency of four species of cacti

Malik, Tegwen; Malik, F T; Clement, R M; Gethin, D T; Beysens, D; Cohen, R E; Krawszik, W; Parker, A R; Gethin, David; Clement, Marc

doi:10.1088/1748-3190/10/3/036005

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Dew harvesting efficiency of four species of cacti

Tegwen Malik

, F T Malik, R M Clement, D T Gethin, D Beysens, R E Cohen, W Krawszik, A R Parker, David Gethin

, Marc Clement

Bioinspiration & Biomimetics, Volume: 10, Issue: 3, Start page: 036005

Swansea University Authors: Tegwen Malik , David Gethin , Marc Clement

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DOI (Published version): 10.1088/1748-3190/10/3/036005

Abstract

Four species of cacti were chosen for this study: Copiapoa cinerea var. haseltoniana, Ferocactus wislizenii, Mammillaria columbiana subsp. yucatanensis and Parodia mammulosa. It has been reported that dew condenses on the spines of C. cinerea and that it does not on the spines of F. wislizenii, and...

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Published in:	Bioinspiration & Biomimetics
ISSN:	1748-3182
Published:	2015
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa22360
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first_indexed	2015-07-17T02:04:08Z
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spelling	2019-10-01T13:30:10.5455836 v2 22360 2015-07-16 Dew harvesting efficiency of four species of cacti d7e74f3c3979dff2baba1a16fe50e24a 0000-0003-4315-5726 Tegwen Malik Tegwen Malik true false 20b93675a5457203ae87ebc32bd6d155 0000-0002-7142-8253 David Gethin David Gethin true false 00d270d085497f5ec1a366f25a730302 Marc Clement Marc Clement true false 2015-07-16 BBU Four species of cacti were chosen for this study: Copiapoa cinerea var. haseltoniana, Ferocactus wislizenii, Mammillaria columbiana subsp. yucatanensis and Parodia mammulosa. It has been reported that dew condenses on the spines of C. cinerea and that it does not on the spines of F. wislizenii, and our preliminary observations of M. columbiana and P. mammulosa revealed a potential for collecting dew water. This study found all four cacti to harvest dew on their stems and spines (albeit rarely on the spines of F. wislizenii). Dew harvesting experiments were carried out in the UK, recording an increase in cacti mass on dewy nights. By applying a ranking relative to a polymethyl methacrylate (Plexiglas) reference plate located nearby, it was found that C. cinerea collected the most airborne moisture followed by M. columbiana, P. mammulosa and F. wislizenii respectively, with mean efficiency ratio with respect to the Plexiglas reference of 3.48 ± 0.5, 2.44 ± 0.06, 1.81 ± 0.14 and 1.27 ± 0.49 on observed dewy nights. A maximum yield of normalized performance of 0.72 ± 0.006 l/m−2 on one dewy night was recorded for C. cinerea. Removing the spines from M. columbiana was found to significantly decrease its dew harvesting efficiency. The spines of three of the species were found to be hydrophilic in nature, while F. wislizenii was hydrophobic; the stems of all four species were hydrophilic. The results of this study could be translated into designing a biomimetic water collecting device that utilizes cactus spines and their microstructures. Journal Article Bioinspiration & Biomimetics 10 3 036005 1748-3182 24 4 2015 2015-04-24 10.1088/1748-3190/10/3/036005 COLLEGE NANME Business COLLEGE CODE BBU Swansea University 2019-10-01T13:30:10.5455836 2015-07-16T13:19:40.3077850 Tegwen Malik 0000-0003-4315-5726 1 F T Malik 2 R M Clement 3 D T Gethin 4 D Beysens 5 R E Cohen 6 W Krawszik 7 A R Parker 8 David Gethin 0000-0002-7142-8253 9 Marc Clement 10
title	Dew harvesting efficiency of four species of cacti
spellingShingle	Dew harvesting efficiency of four species of cacti Tegwen Malik David Gethin Marc Clement
title_short	Dew harvesting efficiency of four species of cacti
title_full	Dew harvesting efficiency of four species of cacti
title_fullStr	Dew harvesting efficiency of four species of cacti
title_full_unstemmed	Dew harvesting efficiency of four species of cacti
title_sort	Dew harvesting efficiency of four species of cacti
author_id_str_mv	d7e74f3c3979dff2baba1a16fe50e24a 20b93675a5457203ae87ebc32bd6d155 00d270d085497f5ec1a366f25a730302
author_id_fullname_str_mv	d7e74f3c3979dff2baba1a16fe50e24a_*_Tegwen Malik 20b93675a5457203ae87ebc32bd6d155__David Gethin 00d270d085497f5ec1a366f25a730302_**_Marc Clement
author	Tegwen Malik David Gethin Marc Clement
author2	Tegwen Malik F T Malik R M Clement D T Gethin D Beysens R E Cohen W Krawszik A R Parker David Gethin Marc Clement
format	Journal article
container_title	Bioinspiration & Biomimetics
container_volume	10
container_issue	3
container_start_page	036005
publishDate	2015
institution	Swansea University
issn	1748-3182
doi_str_mv	10.1088/1748-3190/10/3/036005
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active_str	0
description	Four species of cacti were chosen for this study: Copiapoa cinerea var. haseltoniana, Ferocactus wislizenii, Mammillaria columbiana subsp. yucatanensis and Parodia mammulosa. It has been reported that dew condenses on the spines of C. cinerea and that it does not on the spines of F. wislizenii, and our preliminary observations of M. columbiana and P. mammulosa revealed a potential for collecting dew water. This study found all four cacti to harvest dew on their stems and spines (albeit rarely on the spines of F. wislizenii). Dew harvesting experiments were carried out in the UK, recording an increase in cacti mass on dewy nights. By applying a ranking relative to a polymethyl methacrylate (Plexiglas) reference plate located nearby, it was found that C. cinerea collected the most airborne moisture followed by M. columbiana, P. mammulosa and F. wislizenii respectively, with mean efficiency ratio with respect to the Plexiglas reference of 3.48 ± 0.5, 2.44 ± 0.06, 1.81 ± 0.14 and 1.27 ± 0.49 on observed dewy nights. A maximum yield of normalized performance of 0.72 ± 0.006 l/m−2 on one dewy night was recorded for C. cinerea. Removing the spines from M. columbiana was found to significantly decrease its dew harvesting efficiency. The spines of three of the species were found to be hydrophilic in nature, while F. wislizenii was hydrophobic; the stems of all four species were hydrophilic. The results of this study could be translated into designing a biomimetic water collecting device that utilizes cactus spines and their microstructures.
published_date	2015-04-24T03:26:37Z
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score	11.021648

Dew harvesting efficiency of four species of cacti

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