Article
Chemistry, Physical
Lotfi Sellaoui, Luis F. O. Silva, Michael Badawi, Jawad Ali, Nathalia Favarin, Guilherme L. Dotto, Alessandro Erto, Zhuqi Chen
Summary: Experimental data shows that activated carbon produced from wastes deriving from a winery industry has different adsorption capacities for 2-nitrophenol and ketoprofen, with temperature playing a significant role. The modeling analysis suggests that a double layer model is suitable for describing the adsorption mechanisms, and the adsorption energy results indicate that physical interactions are responsible for the adsorption of the pollutants.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Environmental
Yang Yue, Yanxiang Wang, Ce Qu, Xiaodan Xu
Summary: This study investigated the use of modified PAN-ACF, PAN-ACF/TiO2, and PAN-ACF/ZnO adsorbents for the removal of PNP pollutants in wastewater, with adsorption efficiency up to 98.05%. Additionally, ACFs loaded with nano-TiO2 and nano-ZnO photocatalysts exhibited high photocatalytic degradation rates of PNP under UV light irradiation, reaching 99.85% and 98.31% respectively.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Environmental Sciences
G. Ilyasoglu, I. Vergili, O. Aktas, Y. Kaya, Z. B. Gonder, G. Yilmaz
Summary: The study investigates the bioregeneration of powdered activated carbon (PAC) loaded with paracetamol (PAR) and the impact of sludge retention time (SRT) on bioregeneration. The adsorption efficiency of PAR onto PAC is high at 99.8%, and the bioregeneration efficiencies at SRTs of 10, 30, and 60 days are 17.3%, 26.8%, and 20.1% respectively. The extracellular enzymatic activity is found to be the dominant mechanism in bioregeneration, especially at an SRT of 30 days. The low desorption capacity limits the overall bioregeneration efficiency.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Environmental
Nathalia F. Silva, Matias S. Netto, Luis F. O. Silva, Evandro S. Mallmann, Eder C. Lima, Valdecir Ferrari, Guilherme L. Dotto
Summary: The study developed composite carbon materials from winery residues activated with zinc chloride for adsorption of emerging contaminants in water. The materials showed effective adsorption capacity, with detailed characterization of morphology and pore structure to explain the process. The carbon material exhibited high efficiency in removing specific compounds, showing promise as an efficient adsorbent for treating effluents with emerging contaminants.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Chemical
G. E. Harimisa, N. W. C. Jusoh, L. S. Tan, N. A. Ghafar
Summary: This study investigates the synthesis of bamboo activated carbon (BAC) and its adsorption properties for 4-NP. By examining various factors, such as furnace atmospheres and carbonizing/activation temperatures, the optimal conditions for synthesizing BAC were determined. The adsorption mechanism and kinetics were analyzed, and the findings contribute to the development of sustainable and efficient adsorbent materials derived from renewable resources.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Energy & Fuels
Rajesh Choudhary, Kannan Aravamudan, T. Renganathan
Summary: In this study, a novel sequential furnace-microwave treatment was used to synthesize activated carbon with high adsorption capacity from prosopis juliflora thornbush. The adsorption capacity of the activated carbon was found to be higher than conventional furnace activated carbon and microwave activated carbon. The activated carbon also exhibited well-developed pores, high BET surface area, and excellent thermal stability. Furthermore, the adsorption mechanism and regeneration efficiency of the activated carbon were investigated.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Engineering, Environmental
Laura Piai, Alette Langenhoff, Mingyi Jia, Vinnie de Wilde, Albert van der Wal
Summary: This study evaluated the efficiency of removing micropollutants through biodegradation in BAC filters under favorable conditions, in addition to adsorption. Inoculation of melamine degrading biomass significantly increased the removal efficiency, and the provision of an additional carbon source almost completely removed melamine. Moreover, around 60% of the previously adsorbed melamine desorbed from the BAC surface when biodegradation rates in the liquid phase increased, resulting in partial recovery of the adsorption capacity.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Amie C. McElroy, Matthew E. Ogles, Michael R. Hyman, Detlef R. U. Knappe
Summary: A gravity-fed, cometabolic biofiltration system was developed to degrade 1,4-dioxane in drinking water. Results showed that trace levels of 1,4-dioxane can be sustained degraded in biofilters using n-butane as primary substrate, and filter media properties and EBCT affect the efficiency of biofiltration.
Article
Engineering, Environmental
Zedong Lu, Chen Li, Zibo Jing, Xiuwei Ao, Zhongyun Chen, Wenjun Sun
Summary: The study found that once BAC filters reach a steady state, GAC adsorption still plays a major role in removing organic matter due to bioregeneration. Iodine value can be used as an indicator of BAC performance in the initial stages, dominated by adsorption, but not in later stages. Pore-size distribution characteristics may be a better indicator, representing both adsorption performance and microbial activity.
Article
Engineering, Environmental
Andy Y. Y. Hur, Martin A. A. Page, Jeremy S. S. Guest
Summary: On-site treatment of wastewater in cold climates poses challenges, but thermal-swing intermittently-operated biological activated carbon (TS-IOBAC) filtration is a promising solution. This two-step process involves adsorption and bioregeneration to remove organic contaminants efficiently, with minimal energy input. The study showed that TS-IOBAC improved COD removal in cool water by 15%, and it could reduce energy requirements by up to 97% compared to heating the bulk water.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2023)
Article
Engineering, Chemical
Jagabandhu Ray, Tridib Tripathy
Summary: A graft copolymer was synthesized by grafting DMAEA and AMPS monomers onto the dextrin backbone via free radical polymerization using KPS as initiator. The copolymer was characterized using various techniques and utilized as an adsorbent for the removal of nitrophenols from water solutions. The adsorption dynamics, kinetics, isotherms, and thermodynamics were investigated. The nitrophenol adsorption data followed the Langmuir isotherm model, with maximum adsorption capacities of 215.26 mg/g for ONP, 223.60 mg/g for PNP, and 288.24 mg/g for DNP. The equilibrium kinetics followed a pseudo-second-order model. Thermodynamic analysis indicated that nitrophenol adsorption onto the copolymer was spontaneous and endothermic. The preferential adsorption order for nitrophenols was ONP < PNP < DNP.
POLYMER ENGINEERING AND SCIENCE
(2023)
Article
Engineering, Chemical
Beatriz Ledesma, Eduardo Sabio, Carmen Maria Gonzalez-Garcia, Silvia Roman, Maria Emilia Fernandez, Pablo Bonelli, Ana L. L. Cukierman
Summary: This study investigated the solvent adsorption of p-Nitrophenol (PNP) onto activated carbons for wastewater treatment. It analyzed the influence of adsorbate concentration and adsorbent size on equilibrium isotherms and removal rates, and developed efficient adsorption processes. The study examined adsorption isotherms using different models and kinetics using various kinetic models, providing insights into the adsorption mechanism and aiding the design of wastewater treatment processes. The study also observed slight differences in maximum adsorption capacity with particle size and highlighted the significance of inlet velocity and carbon mass in dynamic adsorption systems.
Article
Biochemistry & Molecular Biology
Yu Zhao, Peiqing Yuan, Xinru Xu, Jingyi Yang
Summary: ZIF-8-PhIm was prepared for the removal of p-nitrophenol from petrochemical wastewater. It exhibited stronger interactions, a multistage pore structure, increased hydrophilicity, and higher adsorption capacity compared to ZIF-8 materials. The adsorption process was described by the Langmuir isotherm and pseudo-second-order kinetic models, and hydrogen bonding and p-p interactions played a dominant role.
Article
Environmental Sciences
David M. Kennes-Veiga, Bernadette Vogler, Kathrin Fenner, Marta Carballa, Juan M. Lema
Summary: This study investigated the role of heterotrophic microorganisms in the biotransformation of organic micropollutants (OMPs) in activated sludge, revealing their potential comparable to nitrifiers and identifying multiple enzymatic activities responsible for OMPs transformation. Contrary to prior beliefs, heterotrophs were found to play a significant role in OMPs biotransformation in wastewater treatment plants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Physical
Drew M. Glenna, Asmita Jana, Qiang Xu, Yixiao Wang, Yuqing Meng, Yingchao Yang, Manish Neupane, Lucun Wang, Haiyan Zhao, Jin Qian, Seth W. Snyder
Summary: This article introduces an AC-based material and proposes a hierarchical guideline for evaluating the feasibility of such materials in carbon capture. The most critical performance indicator is the CO2 adsorption energy, with considerations for thermal stability and defect sensitivity, as well as selectivity and capacity.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(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)