Article
Engineering, Chemical
Chaiyot Tangsathitkulchai, Suravit Naksusuk, Atichat Wongkoblap, Poomiwat Phadungbut, Prapassorn Borisut
Summary: The study investigated the equilibrium and kinetics of CO2 adsorption by coconut-shell activated carbon impregnated with sodium hydroxide at 273 K. The CO2 adsorption increased with NaOH loading and exhibited three distinctive regions. The results showed an empirical correlation between effective pore diffusivity, CO2 adsorption, and NaOH loading.
Article
Biochemistry & Molecular Biology
Ido Nir, Vladislav Shepelev, Alexander Pevzner, Daniele Marciano, Lilach Rosh, Tal Amitay-Rosen, Hadar Rotter
Summary: Inorganic phosphate compounds, such as phosphoric acid and its salts, can be used as anti-aging additives for air filters with activated carbon. These additives effectively inhibit the aging of the filters and maintain their adsorption capacity for harmful gases.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Environmental Sciences
Hong-Ming Tan, Chang-Gui Pan, Chao Yin, Kefu Yu
Summary: Per- and polyfluoroalkyl substances (PFASs) have gained attention for their persistence, bioaccumulation, and toxicity. Various activated carbons (ACs) show variability in adsorptive performance towards PFASs. This study comprehensively investigates the adsorption of ten PFASs on different ACs to understand their removal mechanism. Results indicate that GAC-1 and PAC-1 remove over 90% of all target PFASs, and the adsorption mechanisms involve electrostatic interaction, hydrophobic interaction, surface complexation, and hydrogen bonding.
ENVIRONMENTAL RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Thobile Masinga, Malvin Moyo, Vusumzi Emmanuel Pakade
Summary: This study investigates the use of PEI solution-impregnated activated carbon as a potential adsorbent for the removal of toxic Cr(VI) from water. The experimental results show that high removal efficiency can be achieved at pH 3, a contact time of 120 minutes, and a dosage concentration of 1 g L-1. Kinetic and isotherm models were applied to analyze the data, and a maximum adsorption capacity of 114 mg g-1 was obtained.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Multidisciplinary
Min Woo Hong, Ji Hye Park, May Zaw Win, Hyung Chul Yoon, Kwang Bok Yi
Summary: Ammonia, known for its high hydrogen storage capacity, can cause corrosion and catalyst poisoning. Pressure swing adsorption (PSA) is an effective method to remove undecomposed ammonia. In this study, MgCl2-loaded activated carbon (AC) was used as an adsorbent for PSA, demonstrating excellent adsorption and desorption performance. The MgCl2-loaded AC showed a higher adsorption capacity than pure AC and maintained its performance during multiple cycles, making it a promising adsorbent for industrial PSA processes.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Analytical
Sajad Ur Rehman, Shakeel A. Shah
Summary: The study synthesized eggshell waste modified by salicylic acid into an effective adsorbent for Cu(II) removal. The modified eggshell showed enhanced adsorption properties and pore structure, exhibiting superior adsorption capability for copper ions.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2021)
Article
Environmental Sciences
Athanasia K. Tolkou, Miroslava Vaclavikova, George P. Gallios
Summary: This research focuses on removing Cr(VI) from water using modified activated carbon with a combination of iron and manganese or copper oxides. The experimental results showed that NFM material had the highest Cr(VI) removal rate (99.7%) at pH 3 with a 3-hour contact time. The maximum adsorption capacity for NFM was found to be 44.42 mg/g using the Langmuir model, and the structure of the modified adsorbents materials was studied using BET and SEM characterization techniques.
WATER AIR AND SOIL POLLUTION
(2022)
Article
Chemistry, Physical
Anjaneyulu Chatla, Ismail W. Almanassra, Lubna Jaber, Viktor Kochkodan, Tahar Laoui, Hussain Alawadhi, Muataz Ali Atieh
Summary: In this study, Fe doped GAC materials were prepared and characterized. The 5 wt% Fe-GAC impregnated in ethanol and calcined under nitrogen showed the highest removal efficiency for Pb2+ ions. The adsorption kinetics followed the pseudo-second order model and the isotherm results were well correlated with Redlich-Peterson, Sips and Langmuir models. The maximum adsorption capacity was found to be 124.3 mg/g for Pb2+ ions at pH 4.7 and room temperature. The adsorption process was endothermic and spontaneous, involving both chemical and physical mechanisms.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Environmental Sciences
Sadaf Choudhary, Andleeb Zehra, Mohammad Mukarram, Kaiser Iqbal Wani, M. Naeem, M. Masroor A. Khan, Tariq Aftab
Summary: The study showed that exogenously applied salicylic acid can improve the tolerance of Mentha arvensis and Cymbopogon flexuosus to boron stress by regulating antioxidant mechanisms and limiting boron uptake, thereby protecting the structural integrity of leaves and increasing essential oil content.
Article
Engineering, Environmental
Shuang Wang, Yu-Ri Lee, Yooseob Won, Hana Kim, Se-Eun Jeong, Byung Wook Hwang, A. Ra Cho, Jae-Young Kim, Young Cheol Park, Hyungseok Nam, Dong-Ho Lee, Hyunuk Kim, Sung-Ho Jo
Summary: In this study, a cost-effective CO2 adsorbent (DKOH-AC) was developed by impregnating KOH on rice husk-based KOH activated carbon (KOH-AC). DKOH-AC showed excellent adsorption performance for low concentration CO2 and involved both chemisorption and physisorption mechanisms.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Qi Zhang, Xiang C. Ma, Chang He, Qing L. Chen, Bing J. Zhang
Summary: Modification of raw activated carbon using chemical solvents, such as triethylenetetramine, can enhance its adsorption performance. Liquid impregnation experiments were conducted to investigate the adsorption of triethylenetetramine on activated carbon for modification. The Langmuir isotherm model and pseudo-first-order kinetic model fitted well with the experimental data, with R2 values of 0.9883 and 0.9954, respectively. The adsorption process was found to be spontaneous, endothermic, and monolayer physical adsorption.
Article
Environmental Sciences
C. A. L. Graca, R. Zema, C. A. Orge, J. Restivo, J. Sousa, M. F. R. Pereira, O. S. G. P. Soares
Summary: The occurrence of emerging pollutants in wastewater treatment plants hinders their reutilization, which calls for effective removal methods without compromising water quality. Ozonation has been explored, but limitations exist towards oxidant-resistant pollutants. The use of carbon catalysts, such as activated carbons, provides an environmentally attractive option. In this study, the catalytic ozonation of salicylic acid was tested using different activated carbons, and the thermal treatment under H2 increased catalytic activity. The best-performing activated carbon showed resistance to ozone and ability to convert ozone into more reactive species.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Min Hu, Wenhao Wu, Daohui Lin, Kun Yang
Summary: In this study, a mesopore-rich activated carbon (KAC) with high surface area was used as an adsorbent to investigate the adsorption of fulvic acid (FA). The results showed that KAC exhibited better adsorption capacity for FA compared to previous studies on biochars (BCs) and activated carbons (ACs), and the negative pH effect on adsorption performance was also weaker. Additionally, KAC was capable of adsorbing FA fractions with various molecular weights, higher aromaticity, and higher polarity.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Shuang Wang, Hoseok Nam, Doyeon Lee, Hyungseok Nam
Summary: This study utilized coffee residue to prepare activated carbon and further develop it into a copper-impregnated activated carbon filter for H2S adsorption. The optimal performance of activated carbon depends on the carbonization temperature and the use of catalyst. In confined spaces, the Cu/AC filter showed excellent H2S adsorption performance and reusability.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Yanan Chen, Yunkun Qian, Jiaxin Ma, Mengjun Mao, Linping Qian, Dong An
Summary: This study systematically evaluated the concurrent adsorption of humic acid (HA) and hexavalent chromium (Cr(VI)) by powdered activated carbon (PAC) in water. It was found that the presence of humic acid significantly enhanced the adsorption of both HA and Cr(VI). The promotion effect of humic acid on Cr(VI) removal was found to decrease with increasing pH. The cooperative adsorption mechanism was attributed to the formation of Cr(VI)-HA and Cr(III)-HA complexes that were readily adsorbed on the PAC surfaces.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
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)