Hydrophobic Magnetic Porous Material of Eichhornia crassipes for Highly Efficient Oil Adsorption and Separation

Abstract

Many oil adsorption materials are composed of nonrenewable raw materials, and their disposal can increase resource consumption and cause new environmental pollution. In this paper, the carbonized Eichhornia crassipes (CEC) were immobilized with Fe3O4 magnetic nanoparticles and modified with 1H, 1H, 2H, 2H-perfluorooctyltriethoxysilane (PFOS) to prepare an oil adsorption material, referred to here as CEC/Fe3O4/PFOS. The magnetic and mechanical strength of the CEC was enhanced by adding Fe3O4 magnetic particles, which enable it efficient to dispose the oil/water solution. CEC/Fe3O4/PFOS shows high porosity (83.53%), low skeletal density (0.487 g/cm3), excellent magnetism, ultrahigh oil absorption capacity (49.94–140.90 g/g), hydrophobic performances with a water contact angle of 150.1 ± 2.3°, and a sliding angle of 10.5°. It is worth noting that the material can be recycled, and the absorbed oil is obtained by distillation. Therefore, this work may provide a candidate for solving the problem of oil pollution using E. crassipes.

Robust and Multifunctional 3D Graphene-Based Aerogels Reinforced by Hydroxyapatite Nanowires for Highly Efficient Organic Solvent Adsorption and Fluoride Removal

“…In recent years, with the rapid economic development and global population explosion, the severe water pollution issue caused by vast industrial wastewater discharge, unremitting domestic sewage production, and frequent oil spillage accident has received major attention because of its grave detriment for the ecological environment and the sustainable development of mankind. − To address this troublesome problem, numerous physicochemical/biological treatment techniques have been widely proposed and investigated, including adsorption, oil skimming, membrane separation/filtration, in situ burning, photocatalysis, microbiological degradation, etc. , Among them, the adsorption approach has become one of the most promising methods due to its distinct advantages, such as the operation simplicity, environmental friendliness, and cost-effectiveness . Generally, based on the specific material dimensions, traditional adsorbent materials can be mainly classified into zero-dimensional (0D) powders or particles (e.g., activated carbon and TiO 2 ), one-dimensional (1D) fibers (e.g., jute fiber, kapok fiber, etc.…”

“…1−3 To address this troublesome problem, numerous physicochemical/biological treatment techniques have been widely proposed and investigated, including adsorption, oil skimming, membrane separation/filtration, in situ burning, photocatalysis, microbiological degradation, etc. 4,5 Among them, the adsorption approach has become one of the most promising methods due to its distinct advantages, such as the operation simplicity, environmental friendliness, and costeffectiveness. 1 Generally, based on the specific material dimensions, traditional adsorbent materials can be mainly classified into zero-dimensional (0D) powders or particles (e.g., activated carbon 6 and TiO 2 7 ), one-dimensional (1D)…”

Magnetic γ-Fe2O3/ZIF-7 Composite Particles and Their Application for Oily Water Treatment

“…Among other technologies, such as biological methods, sedimentation–coagulation, photocatalysts, and filtration, that have been used to remove organic/oily pollutants from water, adsorption is considered an effective technology owing to its simplicity, ease of handling, and favorable economy . Effective sorbents such as hybrid foams, − sponges, , activated carbon, , fibers, , aerogels, porous materials, , and magnetic materials have been proposed over the past few decades. General attributes of ideal sorbents include superhydrophobicity, excellent recyclability, and environmentally friendly chemical and physical nature.…”

Comparative Study of Nanocarbon-Based Flexible Multifunctional Composite Electrodes

“…In this regard, commercial sponge with uniform pore size and stable structure shows great potential in the rational design and design of porous materials. 13 Adding conductive fillers to the sponge is a common strategy to fabricate a conductive porous sponge material with capacitive energy storage performance. 14,15 Metal particle filler has a high conductivity, but the combined ability of metal filler and sponge porous material is weak, leading to poor performance scalability and low charge−discharge cycle stability, which limits its application in the preparation of high-performance porous electrodes material for supercapacitor.…”

“…Porous materials prepared by pyrolysis, polymer curing or freeze drying method, and foaming technique , will produce low porosity and weak adhesion. , In addition, the preparation process of some porous materials is complicated and their properties may be unstable. In this regard, commercial sponge with uniform pore size and stable structure shows great potential in the rational design and design of porous materials …”