Solar-heated graphene sponge for high-efficiency clean-up of viscous crude oil spill

被引：99

作者：

Wang, Yi ^{[1
]}

Zhou, Lihua ^{[2
]}

Luo, Xiaoshan ^{[1
]}

Zhang, Yaping ^{[1
]}

Sun, Jian ^{[1
]}

Ning, Xunan ^{[1
]}

Yuan, Yong ^{[1
]}

机构：

[1] Guangdong Univ Technol, Guangzhou Key Lab Environm Catalysis & Pollut Con, Guangdong Key Lab Environm Catalysis & Hlth Risk, Sch Environm Sci & Engn,Inst Environm Hlth & Poll, Guangzhou 510006, Guangdong, Peoples R China

[2] Guangdong Univ Technol, Sch Chem Engn & Light Ind, Inst Nat Med & Green Chem, Guangzhou 510006, Guangdong, Peoples R China

来源：

JOURNAL OF CLEANER PRODUCTION | 2019年 / 230卷

基金：

中国国家自然科学基金;

关键词：

Photothermal; Crude oil spill remediation; Melamine sponge; Hydrophobic/oleophilic property; Reduced graphene oxide; OXIDE; DISPERSANTS; REMEDIATION; PERFORMANCE; REDUCTION; ACCIDENT; GRAPHITE; SORBENTS; REMOVAL; FOAM;

D O I：

10.1016/j.jclepro.2019.05.178

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A solar-driven self-heated sponge was developed as a novel sorbent to achieve fast collection of crude oil from spills by taking advantage of light-to-heat conversion to significantly reduce oil viscosity. The sorbent was fabricated via facile dip-coating reduced graphene oxide on a commercial melamine sponge. The photothermal effect of sorbent on absorption of crude oil was investigated through infrared thermal imaging, permeating behavior of crude oil droplet and absorption-recovery of crude oil. The results indicated that the graphene sponge revealed an outstanding light-to-heat conversion capability and stability with almost full absorption (similar to 98%) of sunlight. The surface temperature spontaneously increased to as high as 89 degrees C under one sun simulated irradiation (1.0 kW/m(2)) at room temperature (30 degrees C), which subsequently reduced the in situ viscosity of the crude oil by over two orders of magnitude. As a result, the absorption time was reduced by approximately 86% for a solar-heating sponge under one sun illumination compared with that of the sponge without light illumination. In addition, the consecutive recovery rate for pumping-driven crude oil clean-up from seawater under one sun illumination was 12 times faster than that of the sponge without light illumination. The proposed solar responsive sorbent design represents a sustainable approach to address the problem of remediation of viscous crude oil spills. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：995 / 1002

页数：8