Article
Materials Science, Paper & Wood
Mengling Wang, Zhaoqian Li, An Chen, Qiang Tian, Xun Liu, Qingping Luo, Chonghua Pei
Summary: Cellulose hydrogels, specifically natural bacterial cellulose (BC) hydrogels, have been introduced as a potential method for removing water from oil-water emulsions. Treatment of BC hydrogels has been shown to significantly increase separation rates by reducing water holding capacity, providing a potential alternative approach for improving cellulose materials in oil/water separation.
Article
Engineering, Chemical
Jingwei Lu, Fangchao Li, Gan Miao, Xiao Miao, Guina Ren, Bo Wang, Yuanming Song, Xiangming Li, Xiaotao Zhu
Summary: A superhydrophilic/superoleophobic shell powder coating was developed for advanced separation membrane, effectively separating oil/water mixtures and oil/oil mixtures by utilizing selective wetting behavior towards oils with different polarities. This promising approach presents a high separation efficiency for various oil mixtures.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Review
Engineering, Environmental
Ning Zhang, Xianwen Yang, Yalun Wang, Yunfei Qi, Yana Zhang, Jialiang Luo, Ping Cui, Wei Jiang
Summary: The continuous increase in oil spill accidents from industries and daily life has resulted in severe economic loss, destruction of the ecological environment, and threats to human health. Designing and fabricating efficient separation membrane materials is an effective approach to solve this problem, attracting tremendous attention. This article provides a comprehensive overview of separation membrane materials with controlled pore structure and tunable wettability for highly efficient oil/water emulsion separation. Different types of membrane materials and special functional membranes have also been summarized, focusing on their application in oil/water separation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Multidisciplinary Sciences
Xiquan Cheng, Tongyu Li, Linlin Yan, Yang Jiao, Yingjie Zhang, Kai Wang, Zhongjun Cheng, Jun Ma, Lu Shao
Summary: On-demand biodegradable superhydrophilic membranes were developed for ultrafast purification of oily water. The use of polyethylene oxide hydrogels increased the hydrogen bonds formed between the membrane surface and water molecules by 357.6%, converting hydrophobic membranes into superhydrophilic ones. The newly designed nanofiber membranes exhibited a significant increase in oil-in-water emulsion permeance and separation efficiency, outperforming state-of-the-art membranes.
Article
Engineering, Chemical
Haikang Huang, Jing Shi, Binlin Pan, Hengchang Liu, Deqi Wang, Yifeng Gao, Fan Min, Yixuan Li, Wenting Zhou, Zonglin Chu
Summary: Oil/water separation based on superwettable materials has gained significant attention due to its economical and energy-efficient process as well as superior separation efficiency. However, the separation of complex oil/water systems that contain oil-in-water and water-in-oil emulsions in a single batch has not been explored, which is crucial for practical applications. Here, we developed an intelligent device consisting of two porous membranes with opposite superwettability, allowing highly efficient separation and purification of both water and oil phases from complicated oil/water systems. This work opens up possibilities for true industrial applications where the composition of the oil/water systems may vary.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Fuat Topuz, Mahmoud A. Abdulhamid, Gyorgy Szekely
Summary: In this study, highly effective hydrophobic nanofibrous sorbents were developed through electrospinning, showing potential for oil spill remediation.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Xueyan Wang, Zhong Liu, Xianfeng Liu, Ying Su, Jin Wang, Tingting Fan, Xin Ning, Seeram Ramakrishn
Summary: In this study, PVDF/SiO2@GO aerogels with high-performance absorbency and flame retardancy were prepared, providing a new choice for efficient and continuous oil-water separation and crude oil absorption.
Article
Biochemistry & Molecular Biology
Rongrong Si, Honggang Luo, Tao Zhang, Junwen Pu
Summary: In this study, ultralight yet highly adsorptive cellulose nanofiber/chitosan-based aerogels were efficiently prepared using a high-crystallinity metal framework material (ZIF-8) and a freeze-drying approach. The aerogels exhibited a hydrophobic surface and had low density, high porosity, and excellent adsorption and cyclic stability towards organic solvents. Additionally, the aerogels showed great oil removal and separation performance in various oil/water mixtures, making them promising for oily water pollution treatment.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Green & Sustainable Science & Technology
Ke Yan, Fei Zhao, Lijia Pan, Yongchang Jiang, Yi Shi, Guihua Yu
Summary: Crude oil spills pose a serious threat to the environment, especially when dealing with highly viscous oil. Researchers have developed a gel-coated superhydrophobic and oleophilic mesh filter, coupled with an induction-heating strategy, for efficient clean-up of highly viscous oil spills.
NATURE SUSTAINABILITY
(2023)
Article
Polymer Science
Sarah Mohammed Hailan, Deepalekshmi Ponnamma, Igor Krupa
Summary: MA and PU foams are known for their high sorption ability of both polar and unipolar liquids, making them suitable for cleaning and separation of water and oil mixtures. The wettability of the foams can be modified to ensure efficient water/oil or oil/water separation. Various modifications and functionalization strategies have been explored to enhance the performance of the foams in industrial applications.
Article
Engineering, Chemical
Jinwei Xue, Lei Zhu, Xu Zhu, Hui Li, Chao Ma, Shifan Yu, Daofeng Sun, Fujun Xia, Qingzhong Xue
Summary: A superhydrophobic and superoleophilic functionalized sponge was prepared for effective oil/water separation and selective oil adsorption. The sponge showed strong oil absorption capacity and great performance in various harsh environments, indicating promising applications in oily wastewater treatment.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Xianlu Tao, Xiaoyu Chen, Si Cai, Fuan Yan, Siqi Li, Shiwei Jin, Hai Zhu
Summary: In this study, a multifunctional superwettable coating inspired by desert beetles was fabricated for water collection and oily wastewater cleanup. The coating shows high-efficiency water collection rates and oil/water separation capabilities, and remains stable performances even under mechanical destructions, extreme temperature, and UV illumination.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Lianchao Ning, Yi Liu, Shuang Man, Yaxin Han, Longfei Zhang, Honglei Ling, Ming Zhang
Summary: In this study, waste masks were modified into efficient oil adsorption materials with attractive adsorption capacity for both light and heavy oils. The modified masks could separate oil-in-water emulsions and provide a solution to environmental problems caused by discarded masks. Molecular dynamic simulation was used to investigate the oil-water separation mechanism. This study contributes to the production of low-cost, reusable, and eco-friendly oil-absorbing materials.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Review
Biochemistry & Molecular Biology
Xiaoying Liu, Wenlin Ruan, Wei Wang, Xianming Zhang, Yunqi Liu, Jingcheng Liu
Summary: Oil and gas wastewater is characterized by high salinity, high chromaticity, toxic and harmful substances, and poor biodegradability, posing a significant impact on the environment. Nanomaterials show great potential in water treatment technology, especially in membrane separation and photocatalysis technology applications.
Article
Materials Science, Multidisciplinary
Hoan Ngoc Doan, Phu Phong Vo, Andrea Baggio, Masaki Negoro, Kenji Kinashi, Yasuro Fuse, Wataru Sakai, Naoto Tsutsumi
Summary: This study demonstrated a facile and sustainable method to prepare a flexible electrospun nanofiber/nanonet membrane using biodegradable polymers for controllable oil/water separation, showing excellent separation efficiencies for various oil/water mixtures.
ACS APPLIED POLYMER MATERIALS
(2021)
