Article
Environmental Sciences
Dongdong Guo, Yong Wan, Jiangshan Li, Ruiqi Liu, Lei Liu, Qiang Xue
Summary: This study comparatively investigated the adsorption performances of nine commonly used modified bentonites on multiple contaminants, and analyzed the adsorption mechanisms using XRD and FTIR. The results showed that SB-16 modified bentonite had the highest adsorption capacities for phenol and Pb(II). The insertion of surfactant molecules in the interlayer space of montmorillonite increased the substrate spacing, changing the structural properties of bentonite and enhancing the adsorption of organic contaminants. The functional groups in the polymer formed a spatial three-dimensional cross-linking structure on the bentonite surface, providing more adsorption sites for heavy metal ions. These findings suggest the potential industrial applications of modified bentonite in a contaminant barrier system.
ENVIRONMENTAL EARTH SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Perla Garcia-Guzman, Luis Medina-Torres, Ma. Josefa Bernad-Bernad, Fausto Calderas, Octavio Manero
Summary: In recent years, there has been a growing interest in dietary and pharmacological agents that inhibit cholesterol intestinal absorption. These compounds have various mechanisms to inhibit cholesterol absorption, such as affecting cholesterol solubilization, interfering with cholesterol diffusion, and inhibiting molecular mechanisms responsible for cholesterol absorption. This study investigated the characterization of different clays and their cholesterol adsorption capacity. The results showed that MMT Nanoclay has the highest cation exchange capacity and lowest Z potential, while MMT K10 and K30 have the highest cholesterol adsorption due to their high surface area. Isothermal studies also suggested that MMT allows for multilayer adsorption of cholesterol through hydrophobic sites.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
S. A. Martin, I Perez, A. Rivera
Summary: Bentonite shows potential as a drug delivery system in the pharmaceutical industry due to its high drug loading capacity and controlled drug release properties. It efficiently adsorbs and releases vancomycin, achieving a higher load when in its monovalent cationic form. In vitro assays demonstrate that the vancomycin release profiles meet pharmaceutical standards, suggesting the potential use of Bentonite as a vancomycin carrier.
APPLIED CLAY SCIENCE
(2021)
Article
Engineering, Chemical
Raissa Antonelli, Geoffroy Roger Pointer Malpass, Meuris Gurgel Carlos da Silva, Melissa Gurgel Adeodato Vieira
Summary: This study investigated the adsorption behavior of antibiotic ciprofloxacin in a calcined Verdelodo clay-packed fixed-bed system. The experimental results showed a breakthrough adsorption capacity of 0.038 mmol g(-1) and a mass transfer zone of 4.29 cm. Comparison with ofloxacin adsorption performance and density functional theory computations were also conducted.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Environmental Sciences
Telma Belen Musso, Luciano Carlos, Maria Eugenia Parolo, Franco Matias Francisca, Gisela Pettinari, Valeria Giuliano, Marianerla Ruffato
Summary: This study evaluated the Cu(II) removal capacity of a raw calcareous mudstone used as a liner material. Results showed that the calcareous mudstone exhibited higher removal capacity compared to commercial Na-bentonite, and the presence of calcite, a component of the mudstone, played a significant role in Cu(II) removal. Organic compounds had minimal effect on Cu(II) removal, while the presence of humic acids favored Cu(II) sorption in the clay fraction.
WATER AIR AND SOIL POLLUTION
(2022)
Article
Engineering, Environmental
Anna Marszalek, Gabriela Kaminska, Noura Fathy Abdel Salam
Summary: This study evaluated the adsorption capabilities of thermally-treated bentonites and bentonite-carbon nanotubes composites for organic micropollutants and heavy metals in rainwater. The results showed that the composites had high removal percentages and fast adsorption rates for these pollutants.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Multidisciplinary Sciences
Zhang Ming, Hu Dongke, Pan Shaoyu, Chen Guozhou
Summary: Permeability tests using a flexible wall permeameter were conducted to investigate the impact of bentonite-HDTMA on the permeability of Loess, a potential lining material for solid waste landfills. The results revealed that compacted Loess from the middle and lower reaches of the Yellow River in China did not meet the required impermeability standards for landfill liners. However, the permeability of Loess mixed with more than 10% bentonite ratio was significantly lower than the acceptable limit. The addition of a small amount of HDTMA slightly increased the permeability of Loess, but a certain ratio of bentonite-HDTMA still ensured impermeability.
SCIENTIFIC REPORTS
(2023)
Article
Environmental Sciences
Suraj Kumar Bhagat, Konstantina Pyrgaki, Sinan Q. Salih, Tiyasha Tiyasha, Ufuk Beyaztas, Shamsuddin Shahid, Zaher Mundher Yaseen
Summary: This study utilized artificial intelligent models to predict copper ions adsorption by Attapulgite clay from aqueous solutions, with ANN model showing the best performance in predicting Ad when all variables were considered. The applied statistical analysis suggests that ANN and Grid-RF models can be used for monitoring and simulating the adsorption process.
Article
Environmental Sciences
Elahe Abedi, Mohammad Javad Amiri, Mehran Sayadi
Summary: This research investigates the sorption behavior of heavy metals and pigments onto activated bentonite clay in soybean oil under different bleaching methods, finding that the adsorption is most effective under ultrasonic bleaching method. The sorption thermodynamics is endothermic and the process is spontaneous within a certain temperature range.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Physical
Zhi-lei Zeng, Chuang Yu, Rao -ping Liao, Xiaoqing Cai, Zhi-hao Chen, Zhaokai Yu, Ze-xiang Wu
Summary: This study developed a carboxylate polymer grafted montmorillonite to improve the adsorption capacity of heavy metals. The structural changes of montmorillonite before and after modification were characterized. The results showed that the modified method significantly enhanced the adsorption performance of montmorillonite for cadmium ions.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Multidisciplinary Sciences
Ali H. Jawad, Shihab Ezzuldin M. Saber, Ahmed Saud Abdulhameed, Ahlam M. Farhan, Zeid A. ALOthman, Lee D. Wilson
Summary: This research aimed to use natural Iraqi bentonite clay (NIBC) to adsorb the organic dye (methylene blue, MB) from aqueous media. Analytical methods were performed to analyze the physicochemical characteristics of NIBC. The study examined the impacts of adsorbent dosage, pH, and initial concentrations on the removal of MB. Results showed that NIBC had a maximum adsorption capacity of 256 mg/g for MB.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2023)
Article
Polymer Science
Zongkun Lin, Yuru Yang, Zizhan Liang, Lei Zeng, Aiping Zhang
Summary: In this study, a CTS/CA/BT composite physical hydrogel was constructed to prevent secondary pollution and enhance adsorption performance. Various analyses were used to determine the formation mechanism and structure of the hydrogel, which showed promising application prospects for heavy metal ion removal from water.
Article
Environmental Sciences
I Tegin, M. S. Batur, O. Yavuz, C. Saka
Summary: This study investigates a low-cost and economical heat-treated clay sample as a potential adsorbent for the removal of Cu(II), Pb(II) and Cd(II) ions from aqueous solutions. The results show that the adsorption ability of the heat-treated clay adsorbent is significantly improved compared to the raw clay sample.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Applied
Guifang Wang, Na Liu, Shuai Zhang, Jinliang Zhu, Huizhen Xiao, Chenhui Ding
Summary: A novel adsorbent, BEP, was developed by coupling bentonite and eggshell, which showed high efficiency in removing heavy metals from acid mine drainage. It had superior characteristics compared to single montmorillonite or eggshell, and could enhance the pH value of the drainage, reducing H+ competitive adsorption.
JOURNAL OF POROUS MATERIALS
(2022)
Article
Environmental Sciences
Xiang Li, Yufen Huang, Xiaoliang Liang, Lianxi Huang, Lan Wei, Xiaodong Zheng, Houssou Assa Albert, Qing Huang, Zhongzhen Liu, Zhaojun Li
Summary: In this study, mulberry and cinnamon woodchips were reclaimed and prepared for biochars, and it was found that biochars had good adsorption capacity for removing cadmium and atrazine from water. Physical and chemical properties of biochars and their composition played a key role in their adsorption capacity.
Article
Environmental Sciences
C. V. Neves, F. B. Scheufele, A. P. Nardino, M. G. A. Vieira, M. G. C. da Silva, A. N. Modenes, C. E. Borba
ENVIRONMENTAL TECHNOLOGY
(2018)
Article
Biotechnology & Applied Microbiology
Saulo Luiz Cardoso, Camila Stefanne Dias Costa, Meuris Gurgel Carlos da Silva, Melissa Gurgel Adeodato Vieira
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2018)
Article
Chemistry, Physical
Thielle Nayara Vieira de Souza, Samira Maria Leao de Carvalho, Melissa Gurgel Adeodato Vieira, Meuris Gurgel Carlos da Silva, Davi do Socorro Barros Brasil
APPLIED SURFACE SCIENCE
(2018)
Article
Environmental Sciences
Julia Resende de Andrade, Meuris Gurgel Carlos da Silva, Marcelino Luiz Gimenes, Melissa Gurgel Adeodato Vieira
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2018)
Review
Engineering, Chemical
Julia R. de Andrade, Maria F. Oliveira, Meuris G. C. da Silva, Melissa G. A. Vieira
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2018)
Article
Green & Sustainable Science & Technology
Emily Nishikawa, Meuris Gurgel Carlos da Silva, Melissa Gurgel Adeodato Vieira
JOURNAL OF CLEANER PRODUCTION
(2018)
Article
Engineering, Chemical
Emanuelle D. Freitas, Jacyara M. M. Vidart, Edson A. Silva, Meuris G. C. da Silva, Melissa G. A. Vieira
Article
Engineering, Chemical
Mateus Gustavo Sausen, Fabiano Bisinella Scheufele, Helton Jose Alves, Melissa Gurgel Adeodato Vieira, Meuris Gurgel Carlos da Silva, Fernando Henrique Borba, Carlos Eduardo Borba
SEPARATION AND PURIFICATION TECHNOLOGY
(2018)
Article
Environmental Sciences
Camila Stefanne Dias Costa, Bruno Galdeano Mello Queiroz, Richard Landers, Meuris Gurgel Carlos da Silva, Melissa Gurgel Adeodato Vieira
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2019)
Article
Engineering, Chemical
Geovani Rocha de Freitas, Melissa Gurgel Adeodato Vieira, Meuris Gurgel Carlos da Silva
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2018)
Article
Green & Sustainable Science & Technology
Camila Stefanne Dias Costa, Meuris Gurgel Carlos da Silva, Melissa Gurgel Adeodato Vieira
JOURNAL OF CLEANER PRODUCTION
(2018)
Article
Environmental Sciences
Nilza Tatiane das Gracas Santos, Meuris Gurgel Carlos da Silva, Melissa Gurgel Adeodato Vieira
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2019)
Article
Chemistry, Physical
Maria Fernanda Oliveira, Meuris G. C. da Silva, Melissa G. A. Vieira
APPLIED CLAY SCIENCE
(2019)
Article
Engineering, Chemical
Cleophee Gourmand, Caroline Bertagnolli, Jeremy Brandel, Veronique Hubscher-Bruder, Anne Boos
Summary: In this study, bioinspired thiol-functionalized mesoporous silica was used for the removal of cadmium from industrial effluents. The material showed excellent adsorption capacity and recyclability, making it a promising candidate for cadmium removal.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Biochemistry & Molecular Biology
Paula Duenas-Ramirez, Caroline Bertagnolli, Robin Weiss, Joelle Bizeau, Loic Jierry, Philippe Choquet, Ariane Zaloszyc, Sylvie Begin-Colin, Damien Mertz
Summary: Regulating sodium cations level in renal failure diseases is a challenging task for clinicians, and new pollutant extractors based on nanomaterials are emerging as potential treatments.
Article
Chemistry, Physical
Nadine J. Kanik, Artur Kuligiewicz, Jeffrey T. Cullen
Summary: This study examined the effects of different pre-treatments on the structural H-isotope composition of clay minerals. The results showed that different pre-treatments had varied impacts on different clay minerals, and the choice of pre-treatment should be based on the specific properties and mineralogy of the samples.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Lorenzo Lisuzzo, Giuseppe Cavallaro, Stefana Milioto, Giuseppe Lazzara
Summary: This study proposes Pickering emulsions based on wax and halloysite clay nanotubes for coating silk sutures to increase their loading capacity towards eosin. The presence of halloysite/wax microspheres on the surface of silk sutures has also been explored for controlled release of hydrophobic drugs. The influence of the coating on the thermal and mechanical properties of the sutures has been studied using various techniques. In conclusion, the wax/halloysite Pickering emulsions can successfully generate hydrophobic microdomains on the surface of silk sutures, leading to enhanced flexibility and improved loading capacity towards eosin.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Bruna F. Alves, Rita C. P. Nunes, Luiz C. Bertolino, Elizabete F. Lucas
Summary: Operational problems in the oil industry caused by the precipitation of paraffins can be prevented by using polymeric additives. This article evaluates the use of polymeric nanocomposites as pour point reducers in different types of crude oil and finds that they are more efficient than pure poly(ethylene-covinyl acetate) (EVA) in reducing the pour point. The nanocomposites also modify the wax crystals and reduce the viscosity of the oil samples.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
K. A. Daniels, C. C. Graham, A. C. Wiseall, J. F. Harrington, P. Sellin
Summary: Geological storage with clay buffer is widely preferred for removing hazardous radioactive waste. The impact of fluid salinity and void space on the swelling behavior of barrier bentonites was examined through experiments. The findings suggest that clay swelling is suppressed at higher salinities, which affects the void-filling process.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
N. Werling, A. Kuligiewicz, A. Steudel, R. Schuhmann, F. Dehn, K. Emmerich
Summary: Thermal treatment of clay minerals can be used to produce building materials and environmentally friendly binders. This process involves dehydration, dehydroxylation, breakdown of structure, and recrystallization of high temperature phases. Rehydration and rehydroxylation are important factors to consider for geopolymers and SCM.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Xuan Wang, Hao Ding, Zhuoqun Xu, Jianmeng Zhang, Yanbin Yao
Summary: Rutile nano-TiO2 was loaded onto the surface of sericite to prepare sericite-rutile composite particles, which were then modified with HDTMS and sprayed onto the substrates to form sericite-rutile/HDTMS composite coatings with UV shielding and superhydrophobic self-cleaning properties. The coating exhibited good UV shielding rate and remained superhydrophobic after UV irradiation. The hierarchical structure of the sericite-rutile composite and the low surface energy of HDTMS contributed to the superhydrophobicity and UV shielding effect of the coating.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Kailang Sun, Taojun Zhang, Jie Zhou, Yonghong Liu, Minfeng Zeng, Zhen Yang, Ruokun Feng, Xiaorong Ren, Peng Zhang, Baoyi Wang, Xingzhong Cao
Summary: Chitosan-Pd0 nano particles encapsulated in Al, Co-pillared montmorillonite nanocomposites were successfully synthesized using a facile one-pot heat treatment method. The Al, Co pillaring effectively expanded the surface area and generated numerous mesopores in the interlayer space of the MMt. The resultant nanocomposite exhibited similar high comprehensive catalytic performances as the one prepared by the regular divided-multistep method. The encapsulation of CS chains and doping of Co in the Al pillaring also contributed to the improved catalytic performance.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Nathalie Fagel, Isabel Israde-Alcantara, Reza Safaierad, Marttiina Rantala, Sabine Schmidt, Gilles Lepoint, Pierre Pellenard, Nadine Mattielli, Sarah Metcalfe
Summary: Environmental conditions significantly influence clay minerals, and studying clay sediments in tropical lakes can provide valuable insights into past environmental conditions. In this study, multiproxy records from sediment cores of three crater lakes in central Mexico were analyzed. The results showed that disordered kaolinite, formed through hydrolysis and hydrothermal alteration, was the predominant mineral in the sediments. The abundance of kaolinite varied in relation to organic carbon and organic matter-related elements, and showed opposite trends with lithogenic elements. Geochemical data suggested that the increase in kaolinite abundance is linked to the formation of organo-mineral aggregates and lake level changes in closed basins.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
M. J. Martin-Alfonso, A. Mejia, F. J. Martinez-Boza, P. Partal
Summary: The drilling industry is facing new challenges to develop eco-friendlier drilling fluids. Organic modified sepiolite dispersed in oil can be an excellent additive with suitable rheological properties. This study investigated the effect of alkyl ammonium modifiers on the microstructure and rheological properties of sepiolite-vegetable oil dispersions under high-temperature and high-pressure conditions.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Weiquan Zhan, Siyuan Yang, Shenxu Bao, Liuyi Ren, Cheng Liu
Summary: The interaction between talc and the depressor CMC was investigated through molecular dynamics simulation and density functional theory calculation. It was found that CMC showed stronger adsorption on the edge plane of talc due to enhanced interactions with polar groups and water molecules. The study also revealed specific interactions between H atoms in CMC and O atoms in the edge plane, as well as between O atoms in CMC and Si, Mg atoms in the edge plane. Hydration shells on the basal and edge planes of talc were examined to explain the phenomenon.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Pierre Dramou, Yiyang Sun, Xu Ni, Fangqi Wang, Hua He
Summary: In this study, a magnetic nanocomposite was prepared and used for the separation of rutin from real samples through magnetic solid phase extraction (MSPE). The nanocomposite exhibited high specific surface area, chemical and thermal stability, water solubility, and easy separation in aqueous solution. Characterization and experiments confirmed the successful synthesis and efficient enrichment ability of the nanocomposite.
APPLIED CLAY SCIENCE
(2024)
