Article
Engineering, Chemical
Qi Cao, Yu Qian, Junjie Li, Siyu Yang
Summary: Petrochemical, coal chemical, and metal smelting industries produce oily wastewater with surfactant-stabilized oil microdroplets, which are difficult to treat. This study analyzes the mechanism and factors affecting the extraction efficiency of surfactant-stabilized oil microdroplets using solvent extraction. The results show that the extraction is accomplished by the mass transfer of extractant from the exterior to the interior of the oil microdroplets and the rise of extractant-containing oil droplets in the aqueous phase. Multistage extraction experiments demonstrate that this solvent extraction technology can treat oily wastewater to discharge standards. Non-polar extractants are considered more suitable due to their regenerability, lower regeneration costs, and better extraction performance.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Food Science & Technology
Vassilis Athanasiadis, Andreas Voulgaris, Konstantinos Katsoulis, Stavros I. I. Lalas, Ioannis G. G. Roussis, Olga Gortzi
Summary: The extraction of olive oil generates significant wastewater called olive-mill wastewater (OMW). OMW composition varies depending on the type of olive, fruit ripeness, and extraction method. OMW is important for the environment and economy in olive-producing countries, and it is also a low-cost source of polyphenolic compounds with high antioxidant properties. In this study, the cloud point extraction (CPE) method was used to recover polyphenolic compounds from OMW, which enhanced the shelf life and nutritional quality of olive oil.
Article
Engineering, Environmental
Erkin Kocaman, Meltem Yildiz
Summary: In this study, the treatment of oil-containing wastewater was carried out using modified starch as a natural flocculant. The effectiveness of starch flocculants under different conditions was evaluated, and it was found that modified starch can compete with PAM but requires further development.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
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
Engineering, Environmental
Weixing Wu, Genmin Zhu, Beifu Wang, Ting Qu, Ming Gao, Yuanlu Zhu, Jiangyi Yan, Guiliang Li, Hailong Zhang, Lihong Nie
Summary: In this study, recyclable Janus hollow silica micron particles (J-HSMPs) were successfully synthesized and their application in treating oily wastewater was tested. The experimental results showed that J-HSMPs had excellent oil removal capability and reusability, effectively removing crude oil and diesel oil. The amphiphilicity of J-HSMPs allowed them to aggregate tiny oil droplets into millimeter-sized droplets and easily separate them from the water phase.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Chemical
Xiaojiang Li, Li Wang, Hongsheng Lu, Baogang Wang
Summary: Recontamination or the difficult recovery of additives are serious obstacles in separating emulsified oily wastewater, which may lead to health and ecological issues. A sustainable separation method based on homogeneous extraction with CO2 switchable solution was proposed here, showing superior effects in separating different emulsified oil types compared to traditional methods. The separation mechanism was attributed to the expansion behavior and coalescence of emulsified oil droplets induced by the reversible transformation of the CO2 switchable solution, providing a greener and cost-effective solution for oil wastewater treatment.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Review
Chemistry, Analytical
Swadesh Mandal, Susanta Lahiri
Summary: Cloud point extraction (CPE) is a greener alternative to conventional separation techniques in the field of analytical chemistry. This article provides an overview of various aspects of CPE and its recent developments, focusing on the extraction and speciation of metal ions and anionic species. The article also briefly discusses the extraction and determination of nanoparticles by CPE.
MICROCHEMICAL JOURNAL
(2022)
Article
Green & Sustainable Science & Technology
Wenjing Ma, Shanshan Dai, Xiaojiang Li, Hongsheng Lu
Summary: This study presents a sustainable method for separating oil from oily waste using CO2-switchable ionic liquids, which simplifies the process, reduces costs, and improves recovery rates.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Multidisciplinary
Jinjian Hou, Fei Song, Xinyu Ji, Shuanglong Lin
Summary: This study demonstrates that the use of ionic liquids can effectively enhance the recovery of heavy oil from oily sludges. Both [C(12)mim] [PF6] and [C(12)mim][Br] ionic liquids show promising results in terms of increasing the oil recovery and improving the sands' hydrophilicity. The high recovery rate and recyclability make the ionic liquids a viable option for enhancing oil recovery.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Energy & Fuels
Dong Zhang, Ying Huang, Kazuyuki Oshita, Masaki Takaoka, Meng Ying, Zifei Sun, Changdong Sheng
Summary: The study successfully recovered oil from oily sludge using liquefied dimethyl ether (DME) extraction, with the DME/sludge ratio, extraction time, and stirring speed affecting the oil recovery ratio. Compared to traditional methods, DME extraction yielded a higher recovery rate and the recovered oil contained more beneficial components.
Article
Chemistry, Analytical
Xinming Pu, Shu Gan, Xiping Yuan, Raobo Li
Summary: This study combines the advantages of different point cloud acquisition methods to provide high-quality basic data for structure measurement and modeling. By analyzing the mechanisms of different sensors, the integrity of point cloud data, and the single-point geometric characteristics, the advantages and disadvantages of different methods for collecting point clouds of special-shaped structures are compared. Additionally, a point cloud void repair technology based on TLS point cloud is proposed to generate high-quality basic point cloud data of special-shaped structures.
Article
Engineering, Environmental
Mohammad Tajik, Mostafa Lashkarbolooki, Majid Peyravi
Summary: This study investigates the use of an ionic liquid to improve the hydrophilicity and anti-fouling resistance of a polyether sulfone membrane for the treatment of oily wastewater. By modeling the membrane's permeate flux and analyzing the elemental and surface properties of the wastewater and membrane, the researchers were able to understand the mechanisms of membrane fouling caused by the oily wastewater.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Construction & Building Technology
Guocheng Qin, Yin Zhou, Kaixin Hu, Daguang Han, Chunli Ying
Summary: This paper proposes a fully automatic method for reconstructing parameterized BIM using point clouds to address the problems encountered in industrialized bridge construction. Algorithms for bridge point cloud segmentation and extraction of geometric features are developed to improve the accuracy and reliability of the reconstructed BIM. The feasibility of the proposed method is evaluated and verified using both theoretical and actual bridge point clouds.
ADVANCES IN CIVIL ENGINEERING
(2021)
Article
Engineering, Environmental
Yimin Sang, Taotao Lu, Shuguang Wang, Yanhe Han, Feiyu Wang, Tao Yu
Summary: This study investigates the oil removal and coalescence mechanisms of electrospun nanofibrous membranes. The CPVC membrane shows higher oil removal rate compared to the CDA membrane. The oil concentration and the number of layers affect the filtering ratio and removal. The optimal flow rate varies for CPVC and CDA membranes due to their different coalescence mechanisms in different stages. The settled particle size and the ratio of settled particle size to filtered particle size depend on oil concentration and membrane type, but not on flow rate and membrane layers.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Farzam Fotovat, Mehri Hosseini
Summary: This study investigated the factors affecting the design of a continuous EC reactor and optimized the process conditions to improve oil removal efficiency and reduce energy consumption. The results are significant for the development of efficient and economical industrial EC units for the treatment of oily wastewater.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Environmental
Shun-Shun Chen, Xu-Xiu Chen, Tian-Yu Yang, Li Chen, Zheng Guo, Xing-Jiu Huang
Summary: A temperature-modulated sensing strategy was proposed to identify and determine BTEX compounds. Highly effective identification of BTEX was achieved using linear discrimination and convolutional neural network analyses. Additionally, quantitative analysis of concentration was accomplished by establishing the relationship between concentration and response.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Myungkyung Noh, Jeong Yeon Sim, Jisung Kim, Jee Hwan Ahn, Hye-Young Min, Jong-Uk Lee, Jong-Sook Park, Ji Yun Jeong, Jae Young Lee, Shin Yup Lee, Hyo-Jong Lee, Choon-Sik Park, Ho-Young Lee
Summary: This study reveals that chronic exposure to PM induces chronic inflammation and development of COPD by dysregulating NAD+ metabolism and subsequent SIRT1 deficiency in pulmonary macrophages. Activation of SIRT1 by resveratrol effectively mitigates PM-induced inflammation and COPD development. Targeting metabolic and epigenetic reprogramming in macrophages induced by PM is a promising strategy for COPD treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yu Liu, Linlin Qin, Yiming Qin, Tong Yang, Haoran Lu, Yulong Liu, Qiqi Zhang, Wenyan Liang
Summary: Co/NC/PAC electrode was prepared by compounding ZIF-67 with powder-activated carbon for the electrocatalytic treatment of nitrogen-containing heterocyclic compounds. The degradation efficiency of the four compounds reached 90.2-93.7% under optimal conditions, and the degradation order was pyridazine < pyrimidine < pyrazine < pyridine.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Julien Couturier, Pierre Tamba Oulare, Blanche Collin, Claire Lallemand, Isabelle Kieffer, Julien Longerey, Perrine Chaurand, Jerome Rose, Daniel Borschneck, Bernard Angeletti, Steven Criquet, Renaud Podor, Hamed Pourkhorsandi, Guilhem Arrachart, Clement Levard
Summary: This study analyzes the properties of bauxite residue samples and explores the influence of bauxite ore origin, storage conditions, and storage time. The results show that the speciation of yttrium is related to the origin of bauxite ore, while no significant variation was observed with storage conditions or aging of the residues.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Sakthinarenderan Saikumar, Ravi Mani, Mirunalini Ganesan, Inbakandan Dhinakarasamy, Thavamani Palanisami, Dharani Gopal
Summary: Microplastic contamination in marine ecosystems poses a growing concern due to its trophic transfer and negative effects on marine organisms. This study investigates the transfer and impacts of polystyrene microplastics in an estuarine food chain. The results show that microplastics can be transferred through the food chain, although the transfer rates are low. The exposed organisms exhibit stress responses, suggesting the potential risk of microplastics reaching humans through the food chain.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Review
Engineering, Environmental
Yan-Jiao Li, Ying Yuan, Wen-Bing Tan, Bei-Dou Xi, Hui Wang, Kun-Long Hui, Jia-Bao Chen, Yi-Fan Zhang, Lian-Feng Wang, Ren-Fei Li
Summary: This review investigated and analyzed the distribution, composition, and abundance of heavy metals and antibiotic resistance genes (ARGs) in landfill. The results showed that heavy metals have lasting effects on ARGs, and complexes of heavy metals and organic matter are common in landfill. This study provides a new basis to better understand the horizontal gene transfer (HGT) of ARGs in landfill.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Jessy Joseph, Ari Vaisanen, Ajay B. Patil, Manu Lahtinen
Summary: Efficient and environmentally friendly porous hybrid adsorbent beads have been developed for the removal of arsenic from drinking water. The structural tuning of the adsorbents has been shown to have a significant impact on their adsorption performance, with high crystallinity leading to increased adsorption capacity and selectivity towards As5+.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yangyang Liu, Minhua Xiao, Kaiqin Huang, Juntao Cui, Hongli Liu, Yingxin Yu, Shengtao Ma, Xihong Liu, Meiqing Lin
Summary: This study measured the levels of phthalate metabolites in breast milk collected from mothers in southern China. The results showed that phthalates are still prevalent in the region, and breastfeeding contributes to phthalate intake in infants. However, the levels detected do not pose significant health risks to infants based on dietary exposure. The increasing exposure to certain phthalates calls for further research into their sources and potential risks.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhiqiang Wu, Jianxing Sun, Liting Xu, Hongbo Zhou, Haina Cheng, Zhu Chen, Yuguang Wang, Jichao Yang
Summary: Ocean depth affects microbial diversity, composition, and co-occurrence patterns of microplastic microbial communities. Deterministic processes dominate the assembly of mesopelagic plastisphere microbial communities, while stochastic processes shape the assembly of bathypelagic microbial communities. The relationships between microorganisms in the mesopelagic layer are more complex and stable, with Proteobacteria and Actinobacteriota playing important roles.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Tingting Xiao, Renjie Chen, Chen Cai, Shijie Yuan, Xiaohu Dai, Bin Dong, Zuxin Xu
Summary: Based on the efficiency of catalytic ozonation techniques in enhancing sludge dewaterability, this study investigated its effectiveness in simultaneous reduction of antibiotics and antibiotic resistance genes. The results showed that catalytic ozonation conditioning changed the distribution of antibiotics and achieved high degradation rates. It also significantly reduced the abundance of ARGs, inhibited horizontal gene transfer, and decreased the signal transduction of typical ARGs host bacteria.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yang Deng, Xiaohong Guan
Summary: This article discusses two different development approaches for ferrate(VI) technology in water treatment, arguing that process integration is a promising method that can drive technological innovation and revolution in water treatment, achieving higher treatment efficiency, reduced costs and energy consumption, and a smaller physical footprint.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhe Zhang, Lu Zhang, Zhihao Huang, Yuxin Xu, Qingqing Zhao, Hongju Wang, Meiqing Shi, Xiangnan Li, Kai Jiang, Dapeng Wu
Summary: In this study, a floating catalytic foam was designed and prepared to enhance the mass transfer in immobilized photocatalysts for wastewater treatment. The floating catalytic foam could float on the water surface and establish a temperature gradient, effectively promoting the diffusion and adsorption of target molecules during the photocatalytic process.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Muhammad Nafees, Adiba Khan Sehrish, Sarah Owdah Alomrani, Linlin Qiu, Aasim Saeed, Shoaib Ahmad, Shafaqat Ali, Hongyan Guo
Summary: The accumulation of cadmium and antibiotics in edible plants and fertile soil is a worldwide problem. This study investigated the potential of zinc oxide nanoparticles to alleviate the toxicity of both cadmium and antibiotics and promote spinach growth.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Lurui Wan, Kai Wang, Yuan Chen, Zhiyong Xu, Wenbo Zhao
Summary: In this study, a low viscosity and high thermal stability SO2 absorbent with dual interacting sites was successfully synthesized. The absorbent showed the highest absorption enthalpy change and entropy change values among reported SO2 absorbents, and exhibited lower viscosity and comparable thermal stability to ILs.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhengwei Zhou, Guojie Ye, Yang Zong, Zhenyu Zhao, Deli Wu
Summary: This study utilized Mo powder and STPP to enhance the performance of the sodium percarbonate system in pollutant degradation. The presence of Mo and STPP resulted in a higher degradation rate of the model pollutant SMX, with low oxidant consumption. The system generated multiple active species through a series of chain reactions at different pH values, exhibiting excellent performance towards electron-rich pollutants. Furthermore, Mo demonstrated excellent stability and reusability.
JOURNAL OF HAZARDOUS MATERIALS
(2024)