Article
Chemistry, Physical
Xuetao Liang, Yujie Zhao, Jing Liu, Zhilin Yang, Qi Yang
Summary: The dispersing effect of carbon materials on nanoparticles can enhance the full exposure of their active sites. Phosphorus (P)-doped activated carbon-supported trace cobalt ferrite composites (P-CoFe@BCX) were prepared for efficient peroxymonosulfate (PMS) activation and water pollution remediation. The P-CoFe@BC5/PMS oxidation system exhibited excellent removal performance for 2,4-dichlorophenoxyacetic acid (2,4-D) at a wide pH range of 2.0-10.0, and the degradation products showed lower biological toxicity.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Environmental Sciences
Juliane Silberschmidt Freitas, Thandy Junio da Silva Pinto, Maria Paula Cardoso Yoshii, Lais Conceicao Menezes da Silva, Lais Fernanda de Palma Lopes, Allan Pretti Ogura, Lais Girotto, Cassiana Carolina Montagner, Lays de Oliveira Goncalves Alho, Renan Castelhano Gebara, Luis Schiesari, Evaldo Luiz Gaeta Espindola
Summary: Expansion of sugarcane crops in Brazil has potentially led to increased contamination of local habitats. This study found that sugarcane pesticides and fertilizer can have toxic effects on amphibians, including mortality and impairing physiological responses. The combination of pesticides resulted in more sublethal effects in tadpoles compared to individual pesticides.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Ramesh Vinayagam, Saivedh Ganga, Gokulakrishnan Murugesan, Gayathri Rangasamy, Ruchi Bhole, Louella Concepta Goveas, Thivaharan Varadavenkatesan, Niyam Dave, Adithya Samanth, V. Radhika Devi, Raja Selvaraj
Summary: In this study, ferric oxide nanoparticles impregnated with activated carbon from Ulva prolifera biomass were synthesized and used for the adsorption of 2,4-Dichlorophenoxyacetic acid (2,4-D). The nanocomposite exhibited a jagged, irregular surface with pores and showed the presence of carbon, oxygen, and iron. Various characterization techniques confirmed the structural and functional properties of the UPAC-Fe2O3 nanocomposite. Adsorption experiments revealed that the nanocomposite followed the Langmuir isotherm and pseudo-second-order kinetic model, indicating monolayer chemisorption. Furthermore, thermodynamic analysis demonstrated the spontaneous and feasible endothermic nature of the adsorption process.
Article
Engineering, Environmental
Maria Emilia Fernandez, Maria del Rosario Morel, Aldana Carolina Clebot, Cristina Susana Zalazar, Maria de los Milagros Ballari
Summary: The study found that a biomixture of wheat stubble and soil was effective in adsorbing and degrading herbicides, with higher adsorption capacity for 2,4-DCP than 2,4-D. Competitive adsorption between 2,4-D and 2,4-DCP was observed, but the rapid degradation of 2,4-DCP indicated efficient removal of contaminants in the system.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Harshita Chawla, Seema Garg, Jyoti Rohilla, Akos Szamosvolgyi, Anastasiia Efremova, Imre Szenti, Pravin Popinand Ingole, Andras Sapi, Zoltan Konya, Amrish Chandra
Summary: In this study, bismuth vanadate (BiVO4) photocatalyst was bio-fabricated using Curcuma longa, resulting in the successful fabrication of a heterojunction between C. longa and BiVO4. The as-fabricated nanoflowers showed highly efficient photocatalytic degradation of organochlorine pesticides under visible-light irradiation, outperforming pristine BiVO4 and previous materials. Optical studies and analysis revealed the degradation pathways and mechanism of this catalyst.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Thandy Junio da Silva Pinto, Giseli Swerts Rocha, Raquel Aparecida Moreira, Lais Conceicao Menezes da Silva, Maria Paula Cardoso Yoshii, Bianca Veloso Goulart, Cassiana Carolina Montagner, Michiel Adriaan Daam, Evaldo Luiz Gaeta Espindola
Summary: The study conducted on three generations of Chironomus sancticaroli exposed to fipronil, 2,4-D, and their mixtures showed that the pesticides affected various life stages of the chironomids, leading to a decrease in population, altered gender ratios, and reduced reproductive capacity. Prolonged exposure to these pesticides can disrupt natural populations of the exposed organisms and impact ecosystem functioning.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Fernando Manzotti de Souza, Onelia Aparecida Andreo dos Santos
Summary: This study evaluates the adsorption of the herbicide 2,4-D using organophilic clay in a fixed bed adsorption system. The best operational results were obtained with a flow rate of 1 mL min(-1) and an initial concentration of 10 mg L-1.
WATER AIR AND SOIL POLLUTION
(2022)
Article
Environmental Sciences
M. F. Salcedo, A. Y. Mansilla, S. L. Colman, M. J. Iglesias, V. A. Alvarez, C. A. Casalongue
Summary: 2,4-D is harmful to dicotyledonous plants and poses potential risks to non-target plant species, indicating the need for adsorbents to mitigate its damage to sensitive plants.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Review
Environmental Sciences
Rocio Giron-Navarro, Ivonne Linares-Hernandez, Elia Alejandra Teutli-Sequeira, Veronica Martinez-Miranda, Fortunata Santoyo-Tepole
Summary: Organochlorine pesticides, particularly 2,4-dichlorophenoxyacetic acid (2,4-D), have raised concerns worldwide due to their toxicity to human health and the environment at low concentrations and their persistence in the environment. Various advanced oxidation processes (AOPs) have been developed to degrade 2,4-D, with ozonation and electrochemical methods showing high degradation efficiencies but also high energy costs. Photocatalytic and photo-Fenton processes show optimal efficiencies for degradation and mineralization, while the Fenton process is a cost-effective option with lower degradation efficiencies. Evaluating the strengths and weaknesses of these AOPs can help in selecting the most suitable operational conditions for effective pollutant degradation in wastewater treatment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Thandy Junio da Silva Pinto, Raquel Aparecida Moreira, Lais Conceicao Menezes da Silva, Maria Paula Cardoso Yoshii, Bianca Veloso Goulart, Priscille Dreux Fraga, Cassiana Carolina Montagner, Michiel Adriaan Daam, Evaldo Luiz Gaeta Espindola
Summary: Increased use of pesticides in conventional agriculture poses potential environmental risks. This study evaluated the functional implications of environmental realistic concentrations of the herbicide 2,4-D and the insecticide fipronil on the native tropical chironomid Chironomus sancticaroli. Results showed that fipronil at realistic concentrations may have serious ecological implications for C. sancticaroli populations and a mixture with the herbicide 2,4-D can have synergistic effects, potentiating the risks to the aquatic ecosystem.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Marine & Freshwater Biology
Thandy Junio da Silva Pinto, Juliane Silberschmidt Freitas, Raquel Aparecida Moreira, Lais Conceicao Menezes da Silva, Maria Paula Cardoso Yoshii, Lais Fernanda de Palma Lopes, Bianca Veloso Goulart, Marina Reghini Vanderlei, Danillo Badolato Athayde, Priscille Dreux Fraga, Allan Pretti Ogura, Luis Schiesari, Cassiana Carolina Montagner, Michiel Adriaan Daam, Evaldo Luiz Gaeta Espindola
Summary: The study examined the effects of pesticides and vinasse on the survival, behavior, and reproduction of indigenous aquatic invertebrates, finding that at higher concentrations, these chemicals lead to decreased survival rates and negatively impact reproduction.
AQUATIC TOXICOLOGY
(2021)
Article
Environmental Sciences
Thi Dung Le, Duc Thang Nguyen, Quynh Loan Nguyen, Viet Dung Duong, Thi Hai Yen Doan, Ashok Kumar Nadda, Swati Sharma, Thanh Son Le, Tien Duc Pham
Summary: A novel nanomaterial, cationic surfactant-coated TiO2 nanoparticle (CCTN), was fabricated and characterized thoroughly. The adsorption of cationic surfactant, CTAB, on TiO2 was studied under varying pH and ionic strength conditions. The potential application of CCTN in pesticide removal, specifically for 2,4-D, was investigated and found to have a high removal efficiency and adsorption capacity. The adsorption isotherms and mechanisms of 2,4-D on CCTN were also examined.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Fernanda Bernardi, Juliana Roratto Lirola, Marta Margarete Cestari, Robie Allan Bombardelli
Summary: This study evaluated the effects of 2,4-D, glyphosate, and their mixture on oxidative stress, genotoxicity, and the rates of fertilization, hatching, and larval normality in silver catfish. The results showed that glyphosate and the mixture significantly decreased fertilization and hatching, while 2,4-D and the mixture caused genetic damage to the larvae.
ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY
(2022)
Article
Environmental Sciences
Thandy Junio da Silva Pinto, Raquel Aparecida Moreira, Lais Conceicao Menezes da Silva, Maria Paula Cardoso Yoshii, Bianca Veloso Goulart, Priscille Dreux Fraga, Victor Luiz da Silva Rolim, Cassiana Carolina Montagner, Michiel Adriaan Daam, Evaldo Luiz Gaeta Espindola
Summary: Conventional farming practices involve the use of pesticides that may affect aquatic ecosystems. This study found that the tropical amphipod Hyalella meinerti is more sensitive to fipronil compared to 2,4-D. Additionally, while the pesticide mixture exhibited antagonistic effects, it still negatively impacted the growth of Hyalella meinerti.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Raquel Aparecida Moreira, Cristiano V. M. Araujo, Thandy Junio da Silva Pinto, Lais Conceicao Menezes da Silva, Bianca Veloso Goulart, Natalia Prudencio Viana, Cassiana Carolina Montagner, Marisa Narciso Fernandes, Evaldo Luiz Gaeta Espindola
Summary: This study investigated the toxicity mechanisms of two commonly used pesticides in Brazilian sugarcane production (fipronil and 2,4-D) on zebrafish and serpae tetra, including their swimming behavior and neurotoxic effects. The results indicated that these pesticides impact fish avoidance behavior and neuroactivity.
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)