Article
Environmental Sciences
Abdulrhman Fahmi Alali, Sattam Fahad Almojil, Abdulaziz Ibrahim Almohana, Khaled Twfiq Almoalimi
Summary: The research investigates the performance of bentonite clay@biochar@Fe3O4 nanocomposite in removing mercury ions (Hg2+) from aqueous media. The physical and structural properties of the nanocomposite were determined using various analyses. The nanocomposite exhibited high efficiency in Hg2+ removal, spontaneous and favorable uptake process, and high stability for repeated usage.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Agricultural Engineering
Ewomazino Ojogbo, Joanna Jardin, Tizazu H. Mekonnen
Summary: This study investigated the use of cellulose nanocrystals and nanoclays as reinforcing fillers in starch ester films. The addition of nanofillers significantly improved the yield strength of the films, with enhancements of up to 112% for CNC and 173% for nanoclay. The films also showed improvements in light transmission and weight loss when compared to unfilled films.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Environmental Sciences
Andre Baldermann, Stephan Kaufhold, Reiner Dohrmann, Claudia Baldermann, Ilse Letofsky-Papst, Martin Dietzel
Summary: Nanoscale zero-valent iron (nZVI) based composites supported by clay mineral substrates show promise for the in-situ remediation of groundwater and soils contaminated with chlorinated hydrocarbons. The nZVI-B nanocomposite, with higher reactivity and efficiency for TCE removal compared to pure nZVI, demonstrates the potential for use in permeable reactive barriers for contaminated field sites while minimizing reduction of soil-bearing capacity.
Article
Green & Sustainable Science & Technology
Hui Wang, Lusha Jiang, Chongrui Zhang, Kun Wang, Yuchao Li, Hefu Pu, Qiang Zhao
Summary: This study proposed a polymerization method to prepare high performance geosynthetic clay liners (GCLs) by modifying calcium bentonite (CaB) into polymer nanocomposites. The resulting nanocomposites exhibited improved swelling and barrier properties, making them suitable for hazardous landfill containment in aggressive conditions.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Conner C. Murray, Andrew Safulko, Hooman Vatankhah, Charlie J. Liu, Bahareh Tajdini, Robert E. Marshall, Christopher Bellona
Summary: The search for effective and cost-efficient adsorbents for PFAS contamination has led to the evaluation of a novel surface modified organoclay (SMC) adsorbent compared to granular activated carbon (GAC) and ion exchange resin (IX) for the treatment of different PFAS impaired waters. Results showed that IX exhibited the best performance in terms of adsorbent use rates and was more effective than GAC and SMC in treating PFOA from various water sources excluding groundwater. Cost analysis indicated that treatment of landfill leachate and membrane concentrate was more expensive than groundwaters or wastewaters.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Polymer Science
Hasanul Banna Muhammad Zukaul Islam, Md. Abu Bin Hasan Susan, Abu Bin Imran
Summary: The research showed that the starch-clay nanocomposite film prepared using natural polysaccharides has excellent properties including improved mechanical performance, decreased crystallinity, and enhanced biodegradability. The film also exhibits better thermal features and reduced swelling percentage, making it suitable for packaging film applications.
IRANIAN POLYMER JOURNAL
(2021)
Article
Polymer Science
Mona A. Aziz Aljar, Suad Rashdan, Ahmed Abd El-Fattah
Summary: The research focuses on developing environmentally friendly semi-interpenetrating polymer network (semi-IPN) nanocomposite hydrogel beads incorporating bentonite clay for the removal of toxic dyes. The designed beads showed good stability and reusability, with a significant increase in methylene blue removal efficiency.
Article
Geochemistry & Geophysics
Afonso D. Macheca, Antonio B. Mapossa, Antonio J. Cumbane, Asmina E. Sulemane, Shepherd M. Tichapondwa
Summary: This study investigates the Na2CO3 activation of calcium bentonite clay and evaluates the influence of different conditions on its ion exchange capacity. The results demonstrate that the concentration of Na2CO3, activation temperature, and activation time significantly affect the ion exchange capacity and Na/Ca ratio of the clay. The experimental findings further confirm the structural and property changes of the calcium bentonite clay after activation.
Article
Chemistry, Multidisciplinary
Stefania Canana, Cristina Pavan, Chiara Bellomo, Guillermo Escolano-Casado, Giuseppe Chilla, Dominique Lison, Lorenzo Mino, Francesco Turci
Summary: This study reveals the mechanistic data about the interactions between layered silicates (LS) and biomembranes, providing a basis for understanding the interfacial phenomena of LS.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Environmental Sciences
Henrique Santana de Carvalho Neves, Thiago Lopes da Silva, Meuris Gurgel Carlos da Silva, Reginaldo Guirardello, Melissa Gurgel Adeodato Vieira
Summary: The use of mineral clays as alternative adsorbent has been explored due to their physicochemical characteristics and low cost. In this study, expanded vermiculite and sodium-modified vermiculite were evaluated for their adsorption capacity and ion exchange of Cd2+ ions. The sodification process successfully increased the ion exchange capacity of the modified clay, resulting in higher adsorptive capacity and faster kinetics for Cd2+ removal. Despite the decrease in surface area after sodification, the modified adsorbent showed a significant increase in adsorptive capacity.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Construction & Building Technology
Ping Zhang, Lin Chen, Ruishi Xie, Lixian Song, Jun Jiang
Summary: Binary bentonite-water and ternary cement-bentonite-water systems were prepared to enhance the stability of fresh cement slurry for promoting bentonite as a low-cost viscosity modifying admixture. The interlayer ions of bentonite played crucial roles in improving the stability of cement slurry, and the performance of Ca2+ bentonite can be enhanced by introducing Li+. The effect of bentonite on the stability of cement slurry and its influencing mechanism were proposed based on the experimental results.
JOURNAL OF SUSTAINABLE CEMENT-BASED MATERIALS
(2022)
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
Environmental Sciences
Asma Raza, Rabia Rehman, Madeeha Batool, Muhammad Muzammil Jahangir, Ayman A. Ghfar, Samjhana Pradhan, Mehwish Akram
Summary: A bentonite clay-based hetero-metallic oxide composite, KAB-Ben, was synthesized and its efficiency for removing rhodamine B from wastewater was investigated. The results showed that KAB-Ben had higher removal efficiency and adsorption capacity, as well as good reusability and tolerance to different experimental conditions.
WATER AIR AND SOIL POLLUTION
(2023)
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
Chemistry, Analytical
Sumit Kumar, Annapurna Chandane, Arijit Sengupta, Vaisyappattu B. Jayakrishnan, Pulya U. Sastry, Rakesh K. Bajpai
Summary: In this study, the diffusion of caesium (Cs+) in smectite-rich natural clay saturated with different exchange ions (Na+, K+) was investigated. It was found that Cs+ diffusion was faster in K+-saturated clay compared to Na+-clay. This was rationalised by considering the stacking of clay platelets and the microstructural details of the clay in relation to Cs+ diffusion characteristics.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2023)
Article
Chemistry, Applied
V. R. L. Oliveira, F. K. G. Santos, R. H. L. Leite, E. M. M. Aroucha, K. N. O. Silva
Article
Food Science & Technology
M. K. S. Monteiro, V. R. L. Oliveira, F. K. G. Santos, E. L. Barros Neto, R. H. L. Leite, E. M. M. Aroucha, R. R. Silva, K. N. O. Silva
FOOD RESEARCH INTERNATIONAL
(2018)
Article
Chemistry, Physical
Mayra Kerolly Sales Monteiro, Victor Rafael Leal de Oliveira, Francisco Klebson Gomes dos Santos, Eduardo Lins de Barros Neto, Ricardo Henrique de Lima Leite, Edna Maria Mendes Aroucha, Karyn Nathallye de Oliveira Silva
JOURNAL OF MOLECULAR LIQUIDS
(2018)
Article
Chemistry, Physical
Mayra Kerolly Sales Monteiro, Victor Rafael Leal de Oliveira, Francisco Klebson Gomes dos Santos, Eduardo Lins de Barros Neto, Ricardo Henrique de Lima Leite, Edna Maria Mendes Aroucha, Karyn Nathallye de Oliveira Silva
JOURNAL OF MOLECULAR LIQUIDS
(2018)
Article
Food Science & Technology
Cristiane Alves de Paiva, Joao Claudio Vilvert, Francisco Leonardo Gomes de Menezes, Ricardo Henrique de Lima Leite, Francisco Klebson Gomes dos Santos, Jose Francismar de Medeiros, Edna Maria Mendes Aroucha
JOURNAL OF FOOD PROCESSING AND PRESERVATION
(2020)
Article
Chemistry, Physical
Francisco Leonardo Gomes de Menezes, Ricardo Henrique de Lima Leite, Francisco Klebson Gomes dos Santos, Adrianus Indrat Aria, Edna Maria Mendes Aroucha
Summary: This study developed biopolymeric films of chitosan and cassava starch with the addition of TiO2 nanoparticles for food packaging. The addition of TiO2 improved the water resistance, increased tensile strength, and reduced UV transmittance of the films, making them suitable for food preservation.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Food Science & Technology
Joao Claudio Vilvert, Sergio Tonetto de Freitas, Maria Aparecida Rodrigues Ferreira, Ricardo Henrique de Lima Leite, Francisco Klebson Gomes dos Santos, Cristina dos Santos Ribeiro Costa, Edna Maria Mendes Aroucha
Summary: The study demonstrated that using chitosan-based biodegradable bags during cold storage can delay mango ripening, maintain fruit quality parameters, and reduce weight loss, respiration rate, and anthracnose incidence. This suggests that chitosan-based bags are an eco-friendly and effective method to preserve the postharvest quality of 'Palmer' mangoes during cold storage.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Simone Keily Costa Silva, Andarair Gomes dos Santos, Ricardo Henrique de Lima Leite, Edna Maria Mendes Aroucha, Francisco Klebson Gomes dos Santos
Summary: This study evaluated the adsorption capacity of cassava peel for textile dye Blue Reactive BF-5G, and found that cassava peel is a potential, cost-effective material for the treatment of wastewater.
MATERIA-RIO DE JANEIRO
(2022)
Article
Materials Science, Multidisciplinary
Larissa Nogueira E. Silva, Maite Medeiros de Santana E Silva, Francisco Klebson Gomes dos Santos, Carlson Pereira de Souza, Andre Luis Lopes Moriyama, Andarair Gomes dos Santos
Summary: The study successfully synthesized copper ferrite using the EDTA-Citrate complexation method, and the variation of synthesis conditions directly influenced its morphology, resulting in different microstructural characteristics.
MATERIA-RIO DE JANEIRO
(2021)
Article
Materials Science, Multidisciplinary
Larissa Nogueira e Silva, Alexsandro Rocha da Silva, Maite Medeiros de Santana e Silva, Francisco Klebson Gomes dos Santos, Andarair Gomes dos Santos
Summary: In this study, NiMoO4 powder was synthesized using the complexation method combining EDTA-Citrate, and its behavior in the ethyl transesterification reaction was evaluated. Results showed that NiMoO4 exhibited high crystallinity and promising catalytic potential in the transesterification process despite the challenging reaction conditions.
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Antonio do Nascimento Dantas Filho, Edna Maria Mendes Aroucha, Ricardo Henrique de Lima Leite, Francisco Klebson Gomes dos Santos
MATERIA-RIO DE JANEIRO
(2020)
Article
Materials Science, Multidisciplinary
Talisson Davi Noberto Xavier, Victor Rafael Leal de Oliveira, Ricardo Henrique de Lima Leite, Edna Maria Mendes Aroucha, Francisco Klebson Gomes dos Santos
MATERIA-RIO DE JANEIRO
(2020)
Article
Materials Science, Multidisciplinary
Aleft Verlanger Rocha Gomes, Ricardo Henrique de Lima Leite, Manoel Quirino da Silva Junior, Francisco Klebson Gomes Santos, Edna Maria Mendes Aroucha
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS
(2019)
Article
Materials Science, Multidisciplinary
Aleft Verlanger Rocha Gomes, Francielle Cristine Pereira Goncalves, Manoel Quirino da Silva Junior, Ricardo Henrique de Lima Leite, Francisco Klebson Gomes dos Santos, Edna Maria Mendes Aroucha
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS
(2019)
