| Title |
A sustainable hydrophobic luffa sponge for efficient removal of oils from water |
| ID_Doc |
8517 |
| Authors |
Alvarado-Gómez, E; Tapia, JI; Encinas, A |
| Title |
A sustainable hydrophobic luffa sponge for efficient removal of oils from water |
| Year |
2021 |
| Published |
|
| DOI |
10.1016/j.susmat.2021.e00273 |
| Abstract |
A sponge was designed for separating oils from water, which is based on the natural luffa sponge functionalized with stearic acid (L-SA), both natural and abundant renewable resources. Several sponges were prepared using a simple, inexpensive and easily scalable immersion method. The L-SA sponges showed an absorption capacity of 15 +/- 2,14 +/- 2 and 12 +/- 3 g g(-1) with vegetable, used motor and motor oils respectively, after an immersion time of 240 s. The final concentration of oil remaining in water after separation process was 69 +/- 11 mg L-1 which indicates that more than 99% of oil was removed. The L-SA sponges were re-used twelve times and after a steep decrease after the first use, the absorption capacity decreased slowly. These sponges were designed incor-porating circular economy principles. Specifically, we show that after being used, the sponges can be cleaned by removing the remaining oil and stearic acid; leaving the sponge clean as the pristine luffa which then can be used as a regular sponge or it can be functionalized again with stearic acid and re-used to separate oils from water. (C) 2021 Elsevier B.V. All rights reserved. |
| Author Keywords |
Luffa; Oil; Water; Stearic acid; Reusability; Sustainability |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000663227900002 |
| WoS Category |
Green & Sustainable Science & Technology; Energy & Fuels; Materials Science, Multidisciplinary |
| Research Area |
Science & Technology - Other Topics; Energy & Fuels; Materials Science |
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