Green technological approach to synthesis hydrophobic stable crystalline calcite particles with one-pot synthesis for oil–water separation during oil spill cleanup

Wu, Min-Nan; Maity, Jyoti Prakash; Bundschuh, Jochen; Li, Che-Feng; Lee, Chin-Rong; Hsu, Chun-Mei; Lee, Wen‐Chien; Huang, Chung-Ho; Chen, Chien‐Yen

doi:10.1016/j.watres.2017.06.040

Cited by 30 publications

(4 citation statements)

References 51 publications

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“…At present, a variety of methods have been used to separate OSs from water, including adsorption (Benally et al 2019;Brusseau 2019;Meng et al 2019), flocculation (Vandamme et al 2018), membrane separation (Zhao and Chung 2018), solvent extraction (Chang 2020), biodegradation (Tandjaoui et al 2019;Wang et al 2018a, b), in-situ combustion (Xiang et al 2018) and solidification (Jia et al 2019). The adsorption method is given priority due to its low cost, easy operation and fast response, which is widely regarded as an effective choice for treating OSs-bearing wastewater (Benally et al 2019;Li et al 2019b;Wu et al 2017). Moreover, the traditional adsorption materials, such as activated carbon (Piai et al 2019), sugar cane bagasse (Tahir et al 2016), vegetable fibers (Xu et al 2019), sawdust bed (Gao et al 2018;Khasri and Ahmad 2018), vermiculite (Akemoto et al 2021;Moraes et al 2019), etc.…”

Section: Introductionmentioning

confidence: 99%

Bamboo charcoal fused with polyurethane foam for efficiently removing organic solvents from wastewater: experimental and simulation

Wang

Zhao

et al. 2022

Biochar

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The development of a multifunctional oil adsorbing material which could effectively and quickly separate oily wastewater is one of the focuses in water environment restoration. In this study, bamboo charcoal (BC) was used as an improver to modify polyurethane (PU) foam. The results of scanning electron microscope (SEM) and Fourier-transform infrared spectroscopy (FTIR) revealed that the addition of BC could effectively improve the mechanical properties of PU. The adsorption data exhibited that the BC-loaded PU (BC/PU) foam composites effectively removed seven organic solvents (OSs, including octane, petroleum ether, soybean oil, chlorobenzene, 1,2-dichloroethane, n-hexane, cyclohexane), and the maximum adsorption capacity of BC/PU was 23.6 g g−1 when BC content was 5%. The order of pseudo-second-order kinetic constants and maximum adsorption capacity of seven OSs was octane < petroleum ether < soybean oil < chlorobenzene < 1, 2-dichloroethane < cyclohexane < n-hexane. Based on the experimental data and density functional theory (DFT) simulation, the adsorption mechanism of OSs on BC/PU-5 was discussed. The EHOMO and μ of OSs calculated by DFT were highly correlated with absorption affinity (K2, Qe and Qmax). Hence, the contribution of OSs to the adsorption efficiency of BC/PU-5 may be mainly due to electron donor–acceptor (EDA) interaction and non-hydrophobic interaction. In addition, the adsorption capacity did not change significantly after repeated recycling 5 times. Overall, the prepared BC/PU foam composites could be used as a potential candidate for separating OSs in engineering applications. Graphical Abstract

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Section: Introductionmentioning

confidence: 99%

Bamboo charcoal fused with polyurethane foam for efficiently removing organic solvents from wastewater: experimental and simulation

Wang

Zhao

et al. 2022

Biochar

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“…The readily available treatment and remediation approaches in addressing oil spills and oily wastewater discharge, including oil containment and skimming, centrifugation, gas flotation, coagulation and flocculation, in-situ burning, chemical dispersion, solidification, and bioremediation [ 4 , 6 , 9 , 10 , 11 ] exhibit low selectivity and more importantly are time intensive. Moreover, in an emergency oil spill, the commonly used porous materials often display amphiphilic properties, allowing the material to absorb water and oil during the operation, resulting in inefficient separation [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Facile Preparation of Durable and Eco-Friendly Superhydrophobic Filter with Self-Healing Ability for Efficient Oil/Water Separation

Voo,

Chong,

Teoh

et al. 2023

Membranes

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The superhydrophobic feature is highly desirable for oil/water separation (OWS) operation to achieve excellent separation efficiency. However, using hazardous materials in fabricating superhydrophobic surfaces is always the main concern. Herein, superhydrophobic filters were prepared via an eco-friendly approach by anchoring silica particles (SiO2) onto the cotton fabric surface, followed by surface coating using natural material—myristic acid via a dip coating method. Tetraethyl orthosilicate (TEOS) was used in the synthesis of SiO2 particles from the silica sol. In addition, the impact of the drying temperature on the wettability of the superhydrophobic filter was investigated. Moreover, the pristine cotton fabric and as-prepared superhydrophobic cotton filters were characterised based on Fourier-transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy coupled with energy dispersive X-ray spectroscopy (SEM-EDX) and contact angle (CA) measurement. The superhydrophobic cotton filter was used to perform OWS using an oil-water mixture containing either chloroform, hexane, toluene, xylene or dichloroethane. The separation efficiency of the OWS using the superhydrophobic filter was as high as 99.9%. Moreover, the superhydrophobic fabric filter also demonstrated excellent durability, chemical stability, self-healing ability and reusability.

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“…The wettability of solid surfaces is a very important property, which depends on the chemical component and surface micro/ nanostructures simultaneously. 1,2 Special wettable surfaces have been successfully fabricated toward real-world applications such as self-cleaning, [3][4][5] corrosion prevention, [6][7][8] oil-water separation, [9][10][11][12][13] anti-freezing, [14][15][16][17] anti-fog, [18][19][20] and microfluidic devices. [21][22][23][24] In the last few years, changing the wettability of a solid surface to improve its floatability has received more and more attention from researchers.…”

Section: Introductionmentioning

confidence: 99%

Novel water tumbler with high floatation and adhesion using special wettability effects

Chen

Dong

et al. 2022

New J. Chem.

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Green technological approach to synthesis hydrophobic stable crystalline calcite particles with one-pot synthesis for oil–water separation during oil spill cleanup

Cited by 30 publications

References 51 publications

Bamboo charcoal fused with polyurethane foam for efficiently removing organic solvents from wastewater: experimental and simulation

Bamboo charcoal fused with polyurethane foam for efficiently removing organic solvents from wastewater: experimental and simulation

Facile Preparation of Durable and Eco-Friendly Superhydrophobic Filter with Self-Healing Ability for Efficient Oil/Water Separation

Novel water tumbler with high floatation and adhesion using special wettability effects

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