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
Engineering, Environmental
Zawar Hussain, Na Chang, Jingqiu Sun, Simeng Xiang, Tehreem Ayaz, Hao Zhang, Haitao Wang
Summary: In this study, modified coal fly ash showed good removal efficiency for various carcinogenic dyes, with a maximum removal efficiency of 96.03%. Langmuir and Freundlich models were suitable for adsorption isotherm analysis at different dye concentrations, indicating that the adsorption behaviors of all four dyes were better described by pseudo-second-order kinetics. (Less than three sentences)
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Plant Sciences
Muhammad Farhan Saeed, Aftab Jamal, Dost Muhammad, Ghulam Mustafa Shah, Hafiz Faiq Bakhat, Iftikhar Ahmad, Sajjad Ali, Fahid Ihsan, Jingkuan Wang
Summary: Crop response to phosphorous application varies in different soil types, with P retention and mobilization affected by precipitation and adsorption in alkaline calcareous soils. The use of P adsorption isotherms helps determine optimal P levels for different crops and soils. Field studies have shown that phosphorous fertilizer levels in calcareous soils range from 20 to 150 kg P(2)O(5)ha(-1).
JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION
(2021)
Article
Environmental Sciences
Jayaprakash Madhu, Venkatraman Madurai Ramakrishnan, Agilan Santhanam, Muthukumarasamy Natarajan, Balraju Palanisamy, Dhayalan Velauthapillai, Nguyen Thuy Lan Chi, Arivalagan Pugazhendhi
Summary: In this study, zeolite sodalite SOD, LTA, and FAU of different structures were successfully synthesized. The morphological analysis showed that the samples exhibited different shapes. The N2 adsorption-desorption studies indicated that the synthesized samples corresponded to adsorption types IV and I. CO2 adsorption experiments revealed that the zeolite FAU had the highest adsorption capacity. The synthesized zeolites were found to have a large electric field gradient, allowing them to strongly adsorb CO2 molecules.
ENVIRONMENTAL RESEARCH
(2022)
Article
Polymer Science
Hana Ferkous, Karima Rouibah, Nour-El-Houda Hammoudi, Manawwer Alam, Chahrazed Djilani, Amel Delimi, Omar Laraba, Krishna Kumar Yadav, Hyun-Jo Ahn, Byong-Hun Jeon, Yacine Benguerba
Summary: This study investigated the adsorption mechanisms of methylene blue onto olive waste treated with KOH and onto a composite of KOH-treated waste and PEG-silica gel. The research found that electrostatic attraction and hydrogen bond formation are critical for the adsorption process.
Article
Environmental Sciences
Yun-yi Zhang, Yong He, Ke-neng Zhang, Yong-gui Chen, Wei-min Ye
Summary: Gaomiaozi (GMZ) bentonite is extensively used in deep geological repositories for high-level nuclear waste disposal in China. The transformation of montmorillonite in GMZ bentonite affects its adsorption properties, with implications for the long-term performance of the engineering barrier system.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Environmental Sciences
Angel Villabona-Ortiz, Angel Gonzalez-Delgado, Candelaria Tejada-Tovar
Summary: Adsorption equilibrium and kinetics of hexavalent chromium on lignocellulosic adsorbents from oil palm bagasse and yam peels were studied, revealing a strong adsorption capacity under various temperature, adsorbent dose and particle size conditions. The adsorption mechanism was found to be mainly controlled by chemical reaction processes.
Article
Biochemical Research Methods
Elahe Naghdi, Wim De Malsche
Summary: The adsorption behavior of naproxen and fenoprofen on a non-porous pillar array column (NPAC) under reverse phase liquid chromatography conditions was investigated. Single-component adsorption isotherm data were acquired for each analyte, and Langmuir-Freundlich and anti-Langmuir models provided the best fitting for fenoprofen and naproxen, respectively. The validity of the selected isotherm models was confirmed by comparing calculated and experimental band profiles and plate heights.
JOURNAL OF CHROMATOGRAPHY A
(2021)
Article
Chemistry, Multidisciplinary
Nor Fadzilah Pahazri, Najeeha Mohd Apandi, Radin Maya Saphira Radin Mohamed, Ramathasan Nagarajah, Affah Mohd Apandi, Rosmawanie Mohd Radzuan, Shamine S. Moganathan
Summary: The flocculation performance of Stryhnos Potatorum and Pisum Sativum as natural coagulants for treating meat food processing wastewater was evaluated. The optimal conditions for both coagulants were found to effectively remove turbidity, TSS, COD, O&G, and color from the wastewater.
SEPARATION SCIENCE AND TECHNOLOGY
(2023)
Article
Polymer Science
Gaurav Sharma, Amit Kumar, Ayman A. Ghfar, Alberto Garcia-Penas, Mu. Naushad, Florian J. Stadler
Summary: The facile fabrication of XG-cl-poly(AAm-co-AA) hydrogel was demonstrated using microwave-assisted copolymerization. The hydrogel exhibited a high adsorption potential and stability for the removal of toxic cadmium ions.
Article
Engineering, Chemical
Dmitriy Berillo, Aknazar Arysbek
Summary: This study demonstrates the effective removal of silver nanoparticles (AgNPs) using a chitosan-based cryogel, which has potential applications in agriculture, water treatment, and industrial plants. The adsorbent is economically viable, has high affinity toward metal nanoparticles, is biodegradable and biocompatible, and displays good removal efficiency of nanoparticles.
Article
Environmental Sciences
Diego Armando Santos Alves, Amilton Barbosa Botelho Junior, Denise Crocce Romano Espinosa, Jorge Alberto Soares Tenorio, Marcela dos Passos Galluzzi Baltazar
Summary: This study aimed to investigate the use of biomass from a polluted area for the adsorption of Zn and Cu in wastewater treatment. The results showed that the biomass demonstrated high efficiency in adsorbing the metallic ions, making it a technically feasible option for industrial wastewater treatment.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Chemistry, Physical
Matej Suranek, Zuzana Melichova, Valeria Kurekova, Ljiljana Kljajevic, Snezana Nenadovic
Summary: This study investigated the removal of nickel from synthetically prepared solutions using natural bentonites, with experimental results showing that bentonites from JP and SK were most effective for nickel removal. Thermodynamic parameters were calculated, indicating the adsorption process was endothermic and spontaneous. Adsorption capacities and kinetic models were also determined for the different bentonite samples.
Article
Chemistry, Multidisciplinary
Yeongkyun Son, Tae-Hyun Kim, Daekeun Kim, Yuhoon Hwang
Summary: By compounding alginate biopolymer with a porous clay heterostructure, an improved adsorbent for volatile organic compounds was successfully prepared. Through optimization, Alg-PCH demonstrated enhanced thermal stability and adsorption capacity.
Article
Engineering, Chemical
Gang Li, Xing Liu, Jinli Zhang, Jia Liu, Yiran Yang
Summary: This study investigated the adsorption characteristics of Pb(II) onto natural kaolinite and bentonite in Dalian and Heishan areas of China, and analyzed the effects of solid-to-liquid ratio, pH, temperature, and reaction time on the adsorption performance. The results showed that both kaolinite and bentonite can be effective adsorbents for the removal of Pb(II), with rapid adsorption process.
DESALINATION AND WATER TREATMENT
(2022)
Article
Agronomy
Leila Chaari, Norah Salem Alsaiari, Abdelfattah Amari, Faouzi Ben Rebah, Monem Kallel, Tahar Mechichi
Summary: Olive manufacturing generates highly polluting wastewater, and various treatments and valorization processes have been investigated by olive-oil-producing countries to manage this waste. In Tunisia, the government has adopted the spreading of olive mill wastewater (OMW) on soil to improve organic matter content in olive grove soil. The study found that this practice leads to positive physicochemical changes in the soil and could be a solution for managing OMW.
Article
Chemistry, Applied
Fatimah Mohammed Alzahrani, Norah Salem Alsaiari, Khadijah Mohammedsaleh Katubi, Abdelfattah Amari, Mohamed A. Tahoon
Summary: In this study, a hybrid composite based on metal-organic framework (MOF) was successfully prepared and showed excellent adsorption capacity and reusability for industrial wastewater treatment.
ADSORPTION SCIENCE & TECHNOLOGY
(2022)
Article
Polymer Science
Noureddine Mahdhi, Norah Salem Alsaiari, Abdelfattah Amari, Mohamed Ali Chakhoum
Summary: This study demonstrates a novel concept of capillary-driven nanofiltration process for drinking water using a bio-based nanocomposite nanofilter as a free power source, providing a green and sustainable solution. By adding titanium dioxide nanoparticles (NPs) to polymer matrices, the hydrophobic behavior of the polymer nanocomposites can be converted to hydrophilic behavior. The conversion threshold volume fraction of TiO2 NPs was found to be different for different polymer nanocomposites. Using the modified Lucas-Washburn model, it was shown that the capillary-driven water volume increased with the volume fraction of TiO2 NPs. The capillary-driven water volume was in the range of (5.26-6.39) L/h.m(2) with 30% volume fraction of TiO2 NPs, supporting the idea of capillary-driven nanofiltration as a zero energy consumption process. The biodegradable CS/TiO2 and CLA/TiO2 nanocomposites demonstrated higher capillary-driven water volumes compared to the synthetic PVDF/TiO2 nanocomposite.
Article
Food Science & Technology
Islem Dammak, Norah Salem Alsaiari, Imene Fhoula, Abdelfattah Amari, Zohra Hamdi, Mnasser Hassouna, Faouzi Ben Rebah, Tahar Mechichi, Salma Lasram
Summary: This paper assessed the ability of two strains of Saccharomyces cerevisiae to remove ochratoxin A from grape juice. The study found that the dead forms of the strains were more effective in eliminating the toxin. This research demonstrates the potential application of autochthonous yeast for the natural decontamination of grape juice.
Review
Chemistry, Multidisciplinary
Salim Boulkhessaim, Amel Gacem, Samreen Heena Khan, Abdelfattah Amari, Virendra Kumar Yadav, Hamed N. Harharah, Abubakr M. Elkhaleefa, Krishna Kumar Yadav, Sami-ullah Rather, Hyun-Jo Ahn, Byong-Hun Jeon
Summary: This review discusses the use of nanotechnology for the remediation of persistent organic pollutants (POPs). It emphasizes the importance of nanocatalysis, nanofiltration, and nanoadsorption processes. Nanoparticles such as clays, zinc oxide, and iron oxide have shown high efficiency in removing POPs. Nanofiltration and ultrafiltration have also shown potential in POPs remediation. Future research will address the cost issue of nanotechnology and make it a sustainable solution for POPs.
Article
Chemistry, Applied
Abdelfattah Amari, Virendra Kumar Yadav, Sabir Khan Pathan, Bijendra Singh, Haitham Osman, Nisha Choudhary, Khaled Mohamed Khedher, Anup Basnet
Summary: In this study, dried floral powders were used as biosorbents for the removal of methyl red dye. The characterization of the powders showed their potential for efficient dye removal, providing an economical and eco-friendly solution for wastewater treatment.
ADSORPTION SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Multidisciplinary
Abdelfattah Amari, Bassam A. Mohammed, Hayder Mahmood Salman, Jose Manuel Lagos
Summary: This practical study evaluates the resistance of radially-graded graphene-platelets reinforced nanocomposite annular sector plates against thermal shock. The governing equations of the system are defined based on the three-dimensional declaration of elasticity theory. The discrete singular convolution technique is utilized to determine the stress and deflection variation of the clamped plate under instantaneous thermal shock. The effect of thermal shock induced by radical temperature gradient, heat flux, and mixed form is considered, and the time history of the system's thermomechanical behavior is obtained using Laplace transform combined with the extended Dubner and Abate's technique. The accuracy of the solution is verified through comparative analysis with published studies, and it is revealed that higher applied heat flux leads to faster damping of the system's response fluctuations around their ultimate constant values.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2023)
Review
Biochemistry & Molecular Biology
Norah Salem Alsaiari, Fatimah Mohammed Alzahrani, Abdelfattah Amari, Haitham Osman, Hamed N. Harharah, Noureddine Elboughdiri, Mohamed A. Tahoon
Summary: Biogenic nanomaterials synthesized through green synthesis techniques using microorganisms, plant extracts, or proteins as bio-capping and bio-reducing agents have unique biological and physicochemical characteristics. These nanomaterials find applications in various industries, including agrochemical, food, medication delivery, cosmetics, cellular imaging, and biomedical sectors. Green chemistry offers environmentally friendly, biocompatible, nontoxic, and economically effective methods for the synthesis of nanomaterials. This review highlights recent developments in the green synthesis of nanomaterials using different microbes and plants, discusses their applications in food and textile industries, water treatment, and biomedical field, and explores future perspectives for advancing their production and applications.
Article
Green & Sustainable Science & Technology
Abdelfattah Amari, Heba Saed Kariem Alawameleh, Mubeen Isam, Mohammed Abdul Jaleel Maktoof, Haitham Osman, Balamurugan Panneerselvam, Maciej Thomas
Summary: So far, a significant amount of research has been conducted to investigate the equilibrium condition of the adsorption process; however, there is a lack of comprehensive study on evaluating the surface adsorption properties of MOFs. As a result, the adsorption mechanism and equilibrium capacity of MOFs remain not fully understood. Moreover, the mass transfer mechanism is still unknown, making it impossible to predict the adsorption process using MOFs.
Article
Green & Sustainable Science & Technology
Virendra Kumar Yadav, Abdelfattah Amari, Shivraj Gangadhar Wanale, Haitham Osman, M. H. Fulekar
Summary: A large amount of coal fly ash is dumped in fly ash ponds every year, which leads to water pollution due to the presence of toxic heavy metals. Synthesizing silica nanoparticles from coal fly ash and using them for heavy metal removal is an economical and efficient approach. Researchers successfully synthesized nanosilica from coal fly ash and achieved 40-90% removal of heavy metals from fly ash aqueous solution.
Article
Environmental Sciences
Virendra Kumar Yadav, Abdelfattah Amari, Amel Gacem, Noureddine Elboughdiri, Lienda Bashier Eltayeb, M. H. Fulekar
Summary: Every year, a large amount of water is polluted by various sources, with coal fly ash (CFA) being a major pollutant. CFA contains toxic metals that contaminate water bodies through contact with water or rain. Iron oxide nanoparticles (IONPs), recovered from waste like CFA, show promise for wastewater treatment due to their low cost, recyclable nature, and magnetic property. The synthesis of IONPs from CFA involves three steps: extraction of ferrous materials, acidic treatment, and precipitation of iron oxides. The synthesized IONPs have a particle size of 30-70 nm and a purity of 90-93%. They can efficiently remove heavy metals from wastewater, particularly Pb and Cr ions from CFA solutions, with removal efficiency ranging from 40-70%.
Article
Environmental Sciences
Shreya Modi, Virendra Kumar Yadav, Abdelfattah Amari, Abeer Yousef Alyami, Amel Gacem, Hamed N. Harharah, Madhusudan Hiraman Fulekar
Summary: This study investigated the structural properties of antimony and tungsten doped ZnO nanoparticles for the photocatalytic degradation of methylene blue dye. The doped ZnO nanoparticles exhibited enhanced photocatalytic efficiency and could potentially be used for the removal of hazardous dyes from wastewater.
Article
Environmental Sciences
Abdelfattah Amari, Ayesha Noreen, Haitham Osman, Saad Sh. Sammen, Nadhir Al-Ansari, Hayder Mahmood Salman
Summary: A new low-cost approach was introduced to synthesize activated carbon using oil sludge, which included carbonization and chemical activation. The synthesized activated carbon showed good performance in treating oily wastewater, with high carbon content and about 6% ash. The adsorption process was studied under different conditions, and the optimum conditions for wastewater treatment were determined.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Review
Energy & Fuels
Eman H. Khader, Thamer J. Mohammed, Talib M. Albayati, Hamed N. Harharah, Abdelfattah Amari, Noori M. Cata Saady, Sohrab Zendehboudi
Summary: This paper provides an overview of the typical configurations of photocatalytic membrane reactors and their applications in industrial wastewater treatment. The integrative type of suspension PMR configuration was found to be the optimal choice for treating industrial wastewater due to its high contaminant removal efficiency and low operation costs.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2023)
Article
Engineering, Chemical
Salam K. Al-Dawery, Ghadeer E. AL-Yaqoubi, Ahoud A. Al-Musharrafi, Hamed N. Harharah, Abdelfattah Amari, Ramzi H. Harharah
Summary: Chemical and physical methods were used to treat fish wastewater, resulting in reduced turbidity and conductivity. Palm anguish, as a natural adsorbent, showed the best performance in reducing the turbidity of fish wastewater, especially when treated with NaOH.
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)
