Article
Engineering, Environmental
Linxin Zhong, Chunyi Sun, Fenglin Yang, Yingchao Dong
Summary: The study presents a waste-to-resource strategy for recycling copper-bearing waste and treating oily wastewater by rational design of spinel ceramic membranes. A spinel phase conversion mechanism was proposed, and spinning and sintering parameters were systematically studied to tailor membrane structure and properties. This approach demonstrates the feasibility of recycling hazardous metal-bearing sludges into functional ceramic membranes for water treatment applications.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Review
Engineering, Environmental
Sarita Kalla
Summary: This paper discusses the importance of treating oil or surfactant-containing wastewater and introduces the application of Membrane Distillation (MD) technology in treating highly saline wastewater and oil-containing feed streams. It also discusses MD processes, the development of amphiphobic membranes, and the influence of MD operating variables on flux.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Energy & Fuels
Peng Shi, Yuxia Gou, Jiao Li, Qiulu Zheng, Xiao Zhong, Ming Duan, Wanfen Pu
Summary: In this study, a hydrogel coalescer was developed to separate oily wastewater into layers of water and oil, with high efficiency in crude oil recovery and suppression of oil sludge formation. After the addition of a demulsifier, the material showed improved anti-blocking performance and higher flux.
Article
Chemistry, Physical
Hengming Zhang, Shasha Liu, Shiling Yuan
Summary: The molecular dynamics (MD) method was utilized to investigate the treatment of oily wastewater using air flotation. The bubbles generated by the machine trap and combine suspended oil droplets in the oily wastewater. As the bubbles rise, they collide with the suspended oil droplets, causing slight deformation and adherence of the oil droplets to the surface of the foam film. Additionally, the foam film further depresses the oil droplets towards the gas phase, causing closer droplets to coalesce while the farther ones remain uncoalesced.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Engineering, Environmental
Linghui Wei, Meng Li, Feng Gao, Yibo Zhang, Chengwei Li, Qian Zhang
Summary: Traditional air flotation devices are not effective in treating emulsified wastewater. This study presents a new integrated sequential air flotation device and uses two different demulsifiers to improve the demulsification effect. Optimal operating conditions were determined through experiments and the demulsification mechanism was investigated. The device showed significant improvement in COD removal efficiency in practical wastewater treatment.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Biochemistry & Molecular Biology
Chang-Hua Zhao, Yu-Ping Zhang, Li Wan, Xin-Xin Chen, Pei Yuan, Ling-Bo Qu
Summary: This study demonstrates the efficient separation of immiscible oil/water emulsions using a modified filter paper with good chemical and mechanical stability. The results show that the modified filter paper can effectively separate immiscible oil/water, oil-in-water, and water-in-oil emulsions.
Article
Engineering, Chemical
Mengjiao Yan, Kangying Guo, Yue Gao, Qinyan Yue, Baoyu Gao
Summary: This study investigates the coagulation-ultrafiltration integrated process for oily wastewater treatment. It is found that polyaluminum chloride (PAC) is more effective than AlCl3 and Fe based coagulants. The PAC-PDMDAAC coagulation system forms large and loose flocs, indicating efficient removal of oil droplets.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Energy & Fuels
Jixuan Gao, Zheng Tong, Xiangning Bu, Muhammad Bilal, Yue Hu, Chao Ni, Guangyuan Xie
Summary: This study investigated the effect of oil-in-water and water-in-oil emulsions with the same Span 80 emulsifier on flotation performance. By comparing the particle size composition and recovered water of concentrates using kerosene, water-in-oil, and oil-in-water emulsions as collectors, it was found that oil-in-water with 0.5 g Span 80 showed the highest concentrate yield and combustible recovery, while water-in-oil had higher ash content, flotation rate constant, and recovered water. These differences can be attributed to variations in the oil droplet composition of the emulsions, which affect the yields of coarse particles in the concentrates, and subsequently influence the recovery water and fine particle variation.
Article
Materials Science, Multidisciplinary
Jinhua Deng, Meng Zhu, Zhaoli Wang, Yong Liu
Summary: Flocculation with iron-modified chitosan (FeOX-CS) is an eco-friendly method for treating emulsified oily wastewater. The FeOX modification enhances the hydrophilicity of chitosan, improving the demulsification efficiency. The FeOX-CS has a demulsification efficiency of over 60% for oil-in-water (O/W) emulsions and over 97% within 60 minutes at specific conditions. The demulsified oil mainly exists on the water surface and FeOX-CS surface, indicating the potential of FeOX-CS for treating emulsified oily wastewater.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Shao-Lin Wu, Lu-Na Quan, Yan-Ting Huang, Yu-Tang Li, Hao-Cheng Yang, Seth B. Darling
Summary: This study developed a novel membrane evaporator with high purification performance and evaporation efficiency in treating oily wastewater. The temperature gradient on the membrane surface helps combine solar and environmental evaporation, improving evaporation performance.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Zubin Wang, Pu Guo, Liping Heng, Lei Jiang
Summary: Treatment of oily wastewater is crucial due to its threat to drinking water safety, the environment, and human health. A solar-driven device inspired by plant transpiration has been developed, showing high purification efficiency towards various nano/submicrometer-emulsion oily wastewaters. This device can also produce fresh water from oily seawater and acid-base-corrosion oily water, highlighting its potential in addressing oily wastewater treatment challenges.
Article
Physics, Applied
Qinlong Ren, Zexiao Wang, Ning Liu, J. F. Zhang, Z. G. Qu
Summary: The research introduces an active dielectrophoretic oil/water separation technique, which can significantly improve the separation rate by optimizing the voltage, surface charge density, and nanopore configuration.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Environmental Sciences
Ying Yang, Xuebin Jiang, Hanjun Liu, Guosheng Ai, Liwei Shen, Xuening Feng, Fan Ye, Zejun Zhang, Huaikui Yuan, Yuanzhu Mi
Summary: In this study, diethylenetriamine-modified rice straw powder (AM-RSP) was successfully used to treat oily wastewater, showing high efficiency and salt resistance. The factors affecting the treatment performance were investigated, and the demulsification mechanism was explored using various indicators.
ENVIRONMENTAL RESEARCH
(2022)
Review
Engineering, Chemical
I. Ihsanullah, Muhammad Bilal, Muhammad Sajid, Abdul Wahab Mohammad, Muataz A. Atieh, Noreddine Ghaffour
Summary: This review critically summarizes the successful applications of MXene materials in the separation of oily emulsions. The unique characteristics of MXene materials position them as ideal candidates for oil/water separation applications. The paper evaluates the separation mechanisms, regeneration performance, stability, and durability of MXene-based materials and identifies current challenges and research gaps. Future prospects for advancing MXene-based oil/water separation technology are also presented.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Review
Engineering, Environmental
Abdul Halim, Lusi Ernawati, Maya Ismayati, Fahimah Martak, Toshiharu Enomae
Summary: This paper reviews the current research trend of using cellulose as a membrane material for purifying oily wastewater. It introduces three typical biostructures: superhydrophobic, underwater superoleophobic, and Janus surfaces, and applies their characteristics to improve membrane performance. The study also focuses on the biodegradability and sustainability of cellulose. The principles, mechanisms, fabrication processes, and membrane performances are summarized and compared, and future outlook is discussed.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2022)
Article
Environmental Sciences
Zhikun Chen, Chunjiang An, Yixiang Wang, Baiyu Zhang, Xuelin Tian, Kenneth Lee
Summary: The study developed a new shoreline cleanup initiative using chitosan/rhamnolipid (CS/RL) complex dispersion for oiled sand cleanup, which showed high removal efficiency for oil with different levels of content. However, the increase in salinity had a negative impact on the removal efficiency. The pH-responsive characteristic of chitosan facilitated easy water-oil separation.
Article
Environmental Sciences
Ali Zaker, Zhi Chen, Kenneth Lee, Samia ben Hammouda
Summary: An activated char sorbent material was successfully fabricated from sewage sludge, which could recover oil spills through magnetic field and float on the water surface. Feasibility studies showed its high sorption capacity and recyclability, suggesting its potential application in oil spill response operations.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Huifang Bi, Chunjiang An, Catherine N. Mulligan, Kaiqiang Zhang, Kenneth Lee, Rengyu Yue
Summary: In this study, a green and responsive washing fluid was developed using nonionic surfactant-modified nanoclay for cleaning oil spills on beach sand. The performance of the washing fluid was tested under various environmental factors and showed great potential for shoreline cleanup.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Wen Ji, Charbel Abou Khalil, Michel Boufadel, Gina Coelho, Cosan Daskiran, Brian Robinson, Thomas King, Kenneth Lee, Michal Galus
Summary: This study investigated the effects of various factors on droplet size distribution and accommodated oil concentration in WAF and CEWAF experiments. The results showed that the DSD of WAFs and CEWAFs differed at different oil loading concentrations, with high concentration CEWAFs requiring longer mixing and resting time.
Article
Environmental Sciences
Rengyu Yue, Chunjiang An, Zhibin Ye, Huifang Bi, Zhikun Chen, Xudong Liu, Ximeng Zhang, Kenneth Lee
Summary: A novel and dual responsive nanoclay/sodium alginate washing fluid was developed and evaluated for oiled shoreline cleanup. Characterization and batch experiments showed that the washing fluid had satisfactory oil removal performance under various conditions. The NS composite exhibited excellent pH- and Ca2+- responsiveness and could potentially be used as a green washing agent for oil/water separation.
ENVIRONMENTAL RESEARCH
(2022)
Review
Engineering, Marine
Huifang Bi, Chunjiang An, Catherine N. Mulligan, Zhi Chen, Kenneth Lee, Jiyuan Wen, Zhaonian Qu, Xinya Chen
Summary: This article provides a systematic review of technologies using phase-selective organogelators (PSOGs) for oil spill remediation from January 2016 to May 2022. It discusses various types of PSOGs based on molecular structures that are capable of congealing oil in the presence of water/seawater. The mechanisms for phase-selective gelation, deployment methods, and challenges faced in field tests are also explored.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Review
Green & Sustainable Science & Technology
Shuyan Wan, Xiaohan Yang, Xinya Chen, Zhaonian Qu, Chunjiang An, Baiyu Zhang, Kenneth Lee, Huifang Bi
Summary: Container ship accidents can cause marine pollution, posing threats to the ecosystem and human health. There is a need to improve emergency response procedures and regulations. Improving operating procedures, establishing cooperation frameworks, developing contingency plans, and increasing public awareness are effective ways to address these pollution issues.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Guihua Dong, Bing Chen, Bo Liu, Yiqi Cao, Benjamin de Jourdan, Stanislav R. Stoyanov, Jingjing Ling, Xudong Ye, Kenneth Lee, Baiyu Zhang
Summary: This study investigated the efficiency of ozone, ultraviolet/ozone, and ultraviolet/ozone/persulfate processes for treating marine oily wastewater. The results demonstrated that the UV/O3/PS process showed significantly higher removal efficiency, improved wastewater quality, and effective degradation of oil flocs.
Article
Environmental Sciences
Lars Schreiber, Nathalie Fortin, Alberto Mazza, Christine Maynard, Jessica Wasserscheid, Julien Tremblay, Kenneth Lee, Charles W. Greer
Summary: This study investigates the residual oil and habitat recovery in the Ste. Croix wetland in Eastern Canada after an experimental oil spill in 1999. The results show that after 21 years, the sediments in the test plots, regardless of the countermeasures taken, can be considered completely recovered.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Environmental
Ruby Pyke, Nathalie Fortin, Jessica Wasserscheid, Julien Tremblay, Lars Schreiber, Marie-Josee Levesque, Stephanie Messina-Pacheco, Lyle Whyte, Feiyue Wang, Kenneth Lee, David Cooper, Charles W. Greer
Summary: The microbial response and biodegradability of residues from in-situ burning were studied using microcosms. The results showed that the concentrations of hydrocarbons and polycyclic aromatic hydrocarbons (PAHs) in the residues decreased, especially in residues generated from burning weathered diesel.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Marine & Freshwater Biology
Kenneth Lee, Gina Coelho, Jennifer Loughery, Benjamin de Jourdan
Summary: The Chemical Response to Oil Spills: Ecological Effects Research Forum (CROSERF) developed a standardized protocol to compare the toxicity of physically dispersed oil and chemically dispersed oil. Under Canada's Oceans Protection Plan (OPP), a network of 45 participants from seven countries was established to modernize the oil toxicity testing framework. The participants formed working groups targeting specific aspects of oil toxicity testing and concluded that a flexible protocol is needed to address different research questions.
AQUATIC TOXICOLOGY
(2023)
Article
Environmental Sciences
Lars Schreiber, Blake Hunnie, Ianina Altshuler, Esteban Gongora, Madison Ellis, Christine Maynard, Julien Tremblay, Jessica Wasserscheid, Nathalie Fortin, Kenneth Lee, Gary Stern, Charles W. Greer
Summary: With the ongoing warming of the Arctic Ocean and reduction of sea ice cover, the risk of oil spills and the impact of oil biodegradation in the Arctic are increasing. However, this topic is currently poorly understood. A study conducted in the 1980s revisited two oil spill sites in the Canadian High Arctic and found that residual oil remains present after almost four decades. The presence of residual oil significantly affects microbial communities in sediments, with implications for biodegradation in the short Arctic summers.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Wanhua Shen, Narayan Koirala, Debjani Mukherjee, Kenneth Lee, Min Zhao, Jianbing Li
Summary: This study investigated the preparation of stable conventional heavy crude oil-in-water (O/W) emulsions by mechanical homogenization with the addition of a non-ionic surfactant, Tween-20. The effects of four independent variables, including mixing intensity, mixing duration, water salinity, and the concentration of emulsifier, on the emulsion stability were studied using a central composite design. The results showed that the salinity of 30 g/L, mixing intensity of 8,500 rpm, mixing duration of 35 min, and emulsifier concentration of 1.6 wt% led to the formation of the most stable emulsion.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
