Eco-friendly magneto-photothermal sponge for the fast recovery of highly viscous crude oil spill

IF 8.1 1区工程技术 Q1 ENGINEERING, CHEMICAL

Separation and Purification Technology Pub Date : 2022-10-01 DOI:10.1016/j.seppur.2022.121668

Jiacheng Yu , Changqian Cao , Shuo Liu , Yongxin Pan

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引用次数: 13

Abstract

The green remediation of crude oil spills is a global concern due to the high viscosity and low fluidity of such oil. Sorbents with heating functions are promising candidates for reducing the viscosity of crude oil and accelerating its cleanup. Herein, we introduce an eco-friendly sponge with the dual functionality of magnetic and photothermal heating for the rapid recovery of heavy oil spills with very high viscosity. The magneto-photothermal sponge was fabricated by the facile dip-coating of magnetoferritin (MPfFn) nanoparticles, polydopamine (PDA), and polydimethylsiloxane (PDMS) on a melamine sponge (MS). The resulting PDMS-MPfFn-MS exhibited excellent hydrophobicity and adequate flame-retardancy. Owing to the electromagnetic–thermal and photothermal conversion properties of the MPfFn/PDA coating, the surface of the functionalized sponge could be rapidly heated to 112.5 °C under alternating magnetic field (f = 502.05 kHz, H = 10.5 kA m⁻¹) or 81.9 °C under light illumination (1 kW m⁻²). The fast and continuous recovery of extremely highly viscous oil was realized by a combination of solar and magnetic heating with a vacuum pump, and the recovery rate reached 50.6 g h⁻¹ cm⁻². The proposed approach integrates the safety and temperature controllability of magnetic heating and the energy-saving feature of solar heating, thereby serving as a new solution for addressing viscous crude oil spills.

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用于高粘原油溢油快速回收的环保磁光热海绵

由于原油的高粘度和低流动性，原油泄漏的绿色修复受到全球关注。具有加热功能的吸附剂是降低原油粘度和加速原油清理的有希望的候选者。在此，我们介绍了一种具有磁性和光热双重功能的环保海绵，用于高粘度稠油泄漏的快速回收。将磁性铁蛋白(MPfFn)纳米颗粒、聚多巴胺(PDA)和聚二甲基硅氧烷(PDMS)在三聚氰胺海绵(MS)上快速浸渍制备磁光热海绵。所制得的PDMS-MPfFn-MS具有优异的疏水性和良好的阻燃性。由于MPfFn/PDA涂层的电磁热和光热转换特性，在交变磁场(f = 502.05 kHz, H = 10.5 kA m−1)下，功能化海绵表面可以快速加热到112.5°C或光照(1 kW m−2)下81.9°C。采用真空泵结合太阳能和磁力加热的方法，实现了超高稠油的快速连续采出，采收率达到50.6 gh−1 cm−2。该方法结合了磁加热的安全性、温度可控性和太阳能加热的节能特性，为解决稠油泄漏提供了一种新的解决方案。

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来源期刊

Separation and Purification Technology 工程技术-工程：化工

CiteScore

14.00

自引率

12.80%

发文量

2347

审稿时长

43 days

期刊介绍： Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.