Preprint Article Version 1 This version is not peer-reviewed

Cost-effective, Highly Selective and Environmentally Friendly Superhydrophobic Absorbent from Cigarette Filters for Oil Spillage Cleanup

Version 1 : Received: 19 September 2018 / Approved: 19 September 2018 / Online: 19 September 2018 (21:36:11 CEST)

A peer-reviewed article of this Preprint also exists.

Xiong, Q.; Bai, Q.; Li, C.; Lei, H.; Liu, C.; Shen, Y.; Uyama, H. Cost-Effective, Highly Selective and Environmentally Friendly Superhydrophobic Absorbent from Cigarette Filters for Oil Spillage Clean up. Polymers 2018, 10, 1101. Xiong, Q.; Bai, Q.; Li, C.; Lei, H.; Liu, C.; Shen, Y.; Uyama, H. Cost-Effective, Highly Selective and Environmentally Friendly Superhydrophobic Absorbent from Cigarette Filters for Oil Spillage Clean up. Polymers 2018, 10, 1101.

Journal reference: Polymers 2018, 10, 1101
DOI: 10.3390/polym10101101

Abstract

Ecological and environmental damage caused by oil spillage has attracted great attention. Used cigarette filter (CF) has also caused negative environmental consequences. Converting CF to economical materials is a feasible way to address these problems. In this study, we demonstrate a simple method for production of a highly hydrophobic absorbent from CF. CF was modified by using different volume ratios of octadecyltrichlorosilane and methyltrimethoxysilane. When the volume ratio was 3:2, the modified CF had the high water contact angle of 155°. It could selectively and completely absorb silicone oil from an oil-water mixture and showed a good absorption capacity of 38.3 g/g. The absorbed oil was readily and rapidly recovered by simple mechanical squeezing, and it could be reused immediately without any additional treatments. The as-obtained superhydrophobic modified CF retained an absorption capacity of 80% for pump oil and 82% for silicone oil after 10 cycles. The modified CF showed good elasticity in the test of repeated use. The present study provides novel design of a functional material for development of hydrophobic absorbents from used CF via a facile method toward oil spillage cleanup as well as a new recycling method of CF to alleviate the environmental impact.

Subject Areas

cigarette filter; superhydrophobic; highly selective; absorbent; oil spillage

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