Article
Environmental Sciences
Meryem El Rharib, Konouz Hamidallah, Zaina Zaroual, Sanae Elghachtouli, Mohammed Azzi
Summary: This study investigated a natural Moroccan material from the Nador area as an adsorbent for the removal of methyl violet 2B dye from aqueous solutions. The material was characterized and its adsorption properties were determined. The results showed that the material had a high adsorption capacity and could be efficiently used for dye removal.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Mouna Boulahbal, Moulay Abderrahmane Malouki, Moises Canle, Zakaria Redouane-Salah, Sandhanasamy Devanesan, Mohamad S. AlSalhi, Mohammed Berkani
Summary: In this study, natural clay was used as a natural adsorbent to remove the azo dye Crystal Violet from aqueous media. The optimal conditions for dye removal were determined, and the kinetics and thermodynamics of the adsorption process were evaluated using different models.
Article
Engineering, Environmental
Guilherme L. Dotto, Julien Vieillard, Diana Pinto, Sabrina F. Luetke, Luis F. O. Silva, Glaydson S. dos Reis, Eder C. Lima, Dison S. P. Franco
Summary: This study investigated the recovery of Gd3+ from real leachate of phosphogypsum using natural bentonite clay. The adsorption study revealed that the clay has typical bentonite characteristics and can effectively adsorb Gd3+. The kinetics and thermodynamics of the adsorption process were analyzed, and it was found that the Langmuir model and Avrami fractional order model were suitable for describing the adsorption isotherms and kinetic data, respectively. The study also showed that citric acid was an efficient desorbing agent for Gd3+ from the bentonite, and the clay could selectively recover Gd3+ from the real leachate of phosphogypsum.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Nisreen S. Ali, Noor M. Jabbar, Saja M. Alardhi, Hasan Sh. Majdi, Talib M. Albayati
Summary: The potential of raw date seeds as an adsorbent for removing dyes from aqueous solutions was studied. The pseudo second-order model was found to be the best-fitting model for the adsorption process, and the Langmuir model was the better adsorption isotherm model. The study demonstrated that date seeds could effectively remove dyes from aqueous solutions.
Article
Chemistry, Physical
Zuleyha Bingul
Summary: The study investigated the removal of methylene blue dye using natural clay and found that the Langmuir isotherm model was suitable for describing the adsorption process. The highest removal efficiency was achieved with 0.3 g L-1 adsorbent concentration and 20 mg L-1 dye concentration, reaching 94.69%.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Chemistry, Multidisciplinary
Jun Wang, Congying Rao, Lu Lu, Shile Zhang, Mohd Muddassir, Jianqiang Liu
Summary: Two highly stable metal-organic frameworks were designed and synthesized, showing outstanding photocatalytic behaviors for the disintegration of methyl violet under UV irradiation, using different assembly materials.
Article
Environmental Sciences
M. Loganathan, Arya S. Raj, A. Murugesan, P. Senthil Kumar
Summary: This study focuses on synthesizing aromatic polyimides for the removal of carcinogenic crystal violet, enhancing the adsorption efficiency by incorporating different functional moieties, and optimizing the adsorption process through various parameters. The experimental results confirm the effectiveness of the functionalized adsorbent for removing cationic dyes.
Article
Engineering, Chemical
Yushen Lu, Fangzhi Duan, Yongfeng Zhu, Aiqin Wang
Summary: Recycling waste into efficient adsorbents provides a compatible solution for sustainable water resources. Mixed metal oxides (MMOs) were successfully obtained from oxalic acid leaching mixed-dimensional palygorskite clay wastewater through a simple precipitation-calcination process. The MMOs exhibited high adsorption capacities for the anionic dye Congo red (CR) and the cationic dye Methyl violet (MV), with ultrahigh capacity for CR in the Mg-Al-Fe MMO obtained at pH 13 with thorough washing and higher removal capacities for MV in the MMOs containing Fe3O4, sodium carbonate, and carbon byproducts. The study highlights the sustainable utilization of mineral resources and water resources.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Chemistry, Physical
Hanieh Najafi, Neda Asasian-Kolur, Seyedmehdi Sharifian
Summary: This study focused on the adsorption of chromium oxyanions (Cr(VI)) and Crystal Violet (CV) from aqueous solution using Silica Pillared Clay (SPC) as the adsorbent. The granulation of powdered SPC with biopolymers led to enhanced adsorption capacity for CV, while kinetic studies indicated a higher initial sorption rate for CV compared to Cr(VI). The adsorption of Cr(VI) was found to be exothermic with an activation energy of 22.08 kJ/mol, while the adsorption of CV was endothermic with an activation energy of 13.95 kJ/mol.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Water Resources
Moussa Abbas, Mohamed Trari
Summary: Industrial growth and technological advancement have led to the introduction of diverse pollutants into water bodies, posing a public health problem. This study evaluated the adsorption of Congo Red onto Natural Clay in a batch system and investigated the optimum conditions for adsorption capacity. The experimental data followed the Langmuir equation and the adsorption was found to be spontaneous and endothermic. The study provides insights into the removal of pollutants from water.
JOURNAL OF WATER AND CLIMATE CHANGE
(2023)
Article
Chemistry, Physical
Tayeb Benhalima, Fatima Zohra Allali, Nesrine Roumane, Hafida Ferfera-Harrar
Summary: This paper focuses on the synthesis of hybrid biocomposites by immobilizing treated diatomite within the network of carboxymethyl cellulose/dextran sulfate. The physical and chemical properties of the resulting beads were examined, along with their ability to adsorb cationic and anionic dyes. The study found that the immobilized diatomite improved the structural stability and adsorption capacity of the biocomposite beads. Furthermore, the beads demonstrated effective removal of the dyes, making them promising materials for dye adsorption.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Environmental Sciences
Elif Cerrahoglu Kacakgil, Aleyna Turanli, Cemil Dizman
Summary: This study investigates the synthesis and characterization of biobased polyesters with different acid values obtained from the condensation reaction of biobased itaconic acid and polyethylene glycol. UV curing is applied to form polymeric networks as adsorbent material from these polyesters containing different acids. Various characterization techniques such as FTIR, NMR, XPS, GPC, and SEM are used. The effects of different parameters on adsorption and the adsorption models are also studied. The results show that increasing acidity in the chemical structure of bio-based polymeric networks enhances the adsorption properties.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Sami Ullah, Altaf Ur Rahman, Fida Ullah, Abdur Rashid, Tausif Arshad, Eva Viglasova, Michal Galambos, Niyaz Mohammad Mahmoodi, Haseeb Ullah
Summary: The study evaluated the potential of three different natural inorganic clays for removing malachite green dye from aqueous solutions. Results showed that Langmuir isotherm model and pseudo-first-order kinetic model best described the adsorption behavior of MG, and natural inorganic clays with higher surface area can be effective adsorbents for removing MG dye.
Article
Multidisciplinary Sciences
Samuel Kofi Tulashie, Francis Kotoka, Bennett Nana Botchway, Kofi Adu
Summary: This study assesses the adsorption capacity of bamboo and calabash biochar for Reactive Violet 5 Azo dye. The results indicate that bamboo biochar has a high adsorption capacity and efficiency, making it a promising material for the removal of this dye.
Article
Environmental Sciences
Makfire Sadiku, Teuta Selimi, Avni Berisha, Arsim Maloku, Valbone Mehmeti, Veprim Thaci, Naim Hasani
Summary: In this study, the adsorption properties of halloysite nanoclay (HNC) on Methyl Violet (MV) were investigated through adsorption experiments and theoretical simulations. The experimental results showed that HNC had a high adsorption capacity for MV, and the adsorption process was a spontaneous, endothermic physisorption. Molecular simulations were consistent with experimental findings, confirming that HNC is an excellent dye adsorbent for industrial effluents.
Article
Engineering, Chemical
Abdallah Alaoui, K. El Kacemi, K. El Ass, S. Kitane, S. El Bouzidi
SEPARATION AND PURIFICATION TECHNOLOGY
(2015)
Article
Environmental Sciences
K. El Ass
GLOBAL NEST JOURNAL
(2018)
Article
Engineering, Environmental
Z. Zaroual, H. Chaair, A. H. Essadki, K. El Ass, M. Azzi
CHEMICAL ENGINEERING JOURNAL
(2009)
Article
Agronomy
Tawfik El Moussaoui, Mohamed Oussama Belloulid, Khalid El Ass, Laila Mandi, Said Wahbi, Salvatore Masi, Naaila Ouazzani
Summary: This study proposes an eco-efficient scheme (EES) that is both selective and environmentally viable, and compares it to a conventional activated sludge scheme (CAS). The results show that CAS and EES have optimal process operation and significant differences in organic load and nutrient removal efficiencies. Statistical analysis also reveals a positive correlation between influent/effluent wastewater parameters, performance indicators, and process configuration. The eco-efficient process exhibits promising potential as a sustainable and eco-friendly technology.
IRRIGATION AND DRAINAGE
(2023)
Article
Environmental Sciences
K. Elass, A. Eddaif, O. Radey, O. Aitzaouit, M. E. Yakoubi, Y. Chelhaoui
GLOBAL NEST JOURNAL
(2020)
Article
Mining & Mineral Processing
A. Alaoui, K. EL Kacemi, K. EL Ass, Y. Darmane, S. Kitane
TRANSACTIONS OF THE INSTITUTIONS OF MINING AND METALLURGY SECTION C-MINERAL PROCESSING AND EXTRACTIVE METALLURGY
(2016)
Article
Environmental Sciences
K. Elass, A. Laachach, M. Azzi
GLOBAL NEST JOURNAL
(2013)
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)
