Article
Chemistry, Physical
Chenyuan Guo, Shuguang Shen, Meina Li, Ying Wang, Jing Li, Yuanquan Xing, Cui Wang, Huajie Pan
Summary: A rapid and efficient synthesis strategy of MgAl-LDH was proposed in this study, resulting in the synthesis of MgAl-LDH catalyst with high specific surface area. The catalyst synthesized under optimized conditions showed significant degradation efficiency towards urea wastewater and maintained high activity even after multiple uses. Furthermore, a good linear relationship between urea removal rate and the basicity of MgAl-LDH was discovered.
JOURNAL OF CATALYSIS
(2021)
Article
Engineering, Chemical
Yuliu Li, Riccardo Narducci, Alessandra Varone, Saulius Kaciulis, Eleonora Bolli, Roberto Pizzoferrato
Summary: By directly growing Zn-Al LDH films on aluminum foams, the method successfully removed fluoride ions from water, achieving a maximum absorption efficiency of approximately 70% and reducing the fluoride concentration from 3 mg/L to below 1.1 mg/L. This simple and efficient method effectively addressed the issue of difficult separation of LDH powders.
Article
Chemistry, Physical
Shucheng Liu, Ming Li, Yi Tang, Xiaogang Wen
Summary: A novel Fe3O4/MgAl-TA LDH nanocomposites with tartrate anion-intercalation was synthesized by a one-step hydrothermal process. The synthesized FTLDH are flower-like hollow micro-spheres composed of nanosheets with an average thickness of 25 nm. The calcined FTLDH (FTLDH-C) has a specific surface area of 120 m2/g, resulting in high adsorption capacities for various dyes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Biochemistry & Molecular Biology
Bingbing Bai, Qingchen Wang, Yan Sun, Rui Zhou, Gang Chen, Ying Tang
Summary: A series of porous hierarchical Mg/Al layered double hydroxides were synthesized using a green hydrothermal method. The CTAC-MgAl-LDH exhibited a large specific surface area and multiple pore size distributions, leading to high adsorption capacity and stability. The adsorption process followed pseudo-second-order kinetics and conforming to the Freundlich isotherm model.
Article
Chemistry, Multidisciplinary
Ling Zhou, Michal Slany, Bingbing Bai, Weichao Du, Chengtun Qu, Jie Zhang, Ying Tang
Summary: In this study, hierarchical MgAl-LDH nanoparticles with a flower-like morphology were successfully prepared under a hydrothermal condition using CTAB and SA as templates. These nanoparticles exhibited high adsorption capacity for sulfonated lignite and could be regenerated for repeated use, with the main adsorption mechanisms involving electrostatic attraction and ion exchange.
Article
Chemistry, Physical
Wen Song, Xue Zhang, Lu Zhang, Zihan Yu, Xuguang Li, Yanfei Li, Yu Cui, Yanxia Zhao, Liangguo Yan
Summary: In this study, the adsorption mechanisms of polyethylene glycol modified MgAl-LDH for Cu(II), Pb(II), and Cd(II) were qualitatively and quantitatively investigated. The results showed that the precipitation mechanism was the main contributor, accounting for 44.20%-72.12%. The contributions of complexation, isomorphous substitution, and electrostatic attraction to the total adsorption amounts were 12.43%-37.89%, 6.35%-18.81%, and <3.5%, respectively. After modification, the contribution of precipitation increased and complexation decreased.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Engineering, Environmental
Qiaohan Li, Hui-qiang Li, Qian Rao, Ping Yang
Summary: The study successfully synthesized MgAl-LDH@Fe3O4 particles as catalysts in the heterogeneous EF system, effectively degrading refractory organic pollutants in the concentrated liquor of gas field wastewater. Under optimal conditions, the particles broadened the pH range of the EF process, leading to a COD removal efficiency of up to 88.18%. Through a series of characterization techniques and experiments, the synergistic effects of active free radical oxidation, enhanced catalysis, and surface complexation in the heterogeneous EF process were revealed.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Chemical
Julita Sarko, Terese Leonaviciene, Ausra Mazeikiene
Summary: This research investigated the ability of two materials, waste generated during water treatment and wastewater treatment, to remove phosphates from water. The experiments were carried out in the laboratory, and the sorption processes were modeled based on results from batch experiments. The study found that incinerated sewage sludge (ISS) showed a higher sorption capacity for phosphate phosphorus compared to quartz sand (OQS) in batch experiments.
Article
Chemistry, Physical
Peng Zhou, Jinxia Xu, Zihao Wang
Summary: Nano-SiO2@MgAl-layered double hydroxides core-shell nano-composites were successfully synthesized using a co-precipitation method. The as-synthesized NS@MgAl-LDH was characterized and its chloride sorption capacity in simulated concrete pore solution was studied. The results showed that NS@MgAl-LDH had a higher specific surface area and significantly higher chloride sorption capacity compared to pure MgAl-LDH. The sorption process followed Langmuir thermodynamics and pseudo-second-order kinetics, and the sorption was spontaneous and exothermic.
APPLIED CLAY SCIENCE
(2023)
Article
Agricultural Engineering
Qingfeng Wang, Xuesong Tan, Wen Wang, Changlin Miao, Yongming Sun, Zhenhong Yuan, Xinshu Zhuang
Summary: In this study, a cellulose ethanol production method was developed by alkaline pretreatment and enzymatic hydrolysis, which allows direct conversion of treated bagasse into ethanol. The method enables zero discharge of black liquor and wastewater, making it a potential candidate for industrial applications.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Environmental Sciences
Chuchu Zhang, Lu Guo, Jiafu Qin, Zhenguo Chen, Zexi Deng, Xiaojun Wang
Summary: A new combined partial denitrification-anammox with urea hydrolysis (U-PD-Anammox) process was developed to explore an economical and low-carbon alternative for real nitrate-containing wastewater treatment. The process showed efficient nitrogen removal performance and significant economic and environmental benefits compared to traditional denitrification processes.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Guadalupe Macedo-Miranda, Sonia Martinez-Gallegos, Eduardo Ordonez-Regil, Sonia Alvarez-Garcia, Angel A. Valladares-Bernal
Summary: In this study, hydrotalcite and its mixed oxide were synthesized for the removal of triclosan. The materials were characterized and the adsorption process was investigated. The highest adsorption capacity was achieved at pH 9.0 and after 24 hours of equilibration. The adsorption mechanism involved ion exchange and material reconstruction. The adsorption process was exothermic and resulted in a decrease in randomness.
WATER AIR AND SOIL POLLUTION
(2022)
Article
Engineering, Environmental
Kohei Tokunaga, Kazuya Tanaka, Yoshio Takahashi, Naofumi Kozai
Summary: This study systematically investigated the stability of iodate, selenite, and selenate coprecipitated with barite via leaching tests. The results showed that these oxyanions were gradually leached from the barite into water over time. Leaching of the oxyanions was significantly increased in leaching solutions containing NaCl, NaNO3, and Na2SO4.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Shanmukapriya Jayaprakash, Nikita Dewangan, Ashok Jangam, Sonali Das, Sibudjing Kawi
Summary: Steam reforming of toluene (SRT) using Ni-MgO-Al2O3 hydrotalcite catalysts synthesized by urea hydrolysis, coprecipitation, and wet impregnation methods was investigated. Catalysts prepared by urea hydrolysis exhibited higher toluene conversion and resistance to carbon deposits due to smaller Ni-0 particle size and higher surface basicity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Environmental
Meng Cai, Xiaoqiang Fan, Han Yan, Yuting Li, Shijie Song, Wen Li, Hao Li, Zhibin Lu, Minhao Zhu
Summary: The Ti3C2Tx MXene@MgAl-LDH heterostructure composites were successfully obtained through electrostatic interaction, showing favorable binding stability and excellent dispersibility and compatibility with epoxy resin. The prepared C-MXene@LDH/epoxy coating exhibits satisfactory corrosion/wear protection and certain self-healing performance, highlighting the potential of MXene-based heterostructure composites in anti-corrosion and anti-wear applications.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Water Resources
Mhamed Abali, Abdeljalil Ait Ichou, Ahmed Zaghloul, Mohamed Chiban, Fouad Sinan, Mohamed Zerbet
Summary: This study focuses on the treatment of dairy wastewater, and suggests using Carpobrotus edulis as an adsorbent to remove mineral pollutants. The results show that the adsorbent has a high removal efficiency for orthophosphates, sulfates, and nitrates.
APPLIED WATER SCIENCE
(2022)
Article
Chemistry, Physical
Abdelkader Dabagh, M'hamed Abali, Abdeljalil Ait Ichou, Ridouan Benhiti, Fouad Sinan, Mohamed Zerbet
Summary: This paper investigates the possibility of using the native Carpobrotus edulis plant as a bioadsorbent for the removal of toxic dyes. The results show that C. edulis exhibits high adsorption efficiency for the dyes, with the adsorption process following a pseudo-second order kinetic model and Langmuir isotherm. The study also demonstrates the effective regeneration of the bioadsorbent. Operational factors are found to significantly influence the adsorption efficiency.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Inorganic & Nuclear
Abdeljalil Ait Ichou, Ridouan Benhiti, Mhamed Abali, Abdelkader Dabagh, Gabriela Carja, Amina Soudani, Mohamed Chiban, Mohamed Zerbet, Fouad Sinan
Summary: This study synthesized a ternary layered double hydroxide (LDH) composed of ZnII, FeIII, and AlIII for efficient removal of Cu(II) and Pb(II) from water samples. The synthesized LDH was characterized and found to have a mesoporous structure with a MII/MIII molar ratio of about 1.82. The sorption process of Cu(II) and Pb(II) was studied in detail, showing fast kinetics and the contribution of both surface sorption and intraparticle diffusion. The sorption isotherms were evaluated with different models, with Redlich-Peterson and Freundlich models showing better correlation. The thermodynamics study indicated the endothermic and spontaneous nature of the sorption process. Overall, the synthesized LDH exhibited favorable sorption capacity and thus is a promising candidate for heavy metal removal from water.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Energy & Fuels
Abdelkader Dabagh, Ridouan Benhiti, M'hamed Abali, Abdeljalil Ait Ichou, Fouad Sinan, Mohamed Zerbet
Summary: This study investigates the use of low-cost byproducts from Carpobrutus edulis plant as bioadsorbents for industrial dyes. The adsorbents show high adsorption efficiency by reducing organic matter in aqueous solutions. Kinetic data follows a pseudo-second-order model, and the equilibrium data fits well with the Langmuir isotherm.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Review
Chemistry, Multidisciplinary
Mohamed El-habacha, Youssef Miyah, Salek Lagdali, Guellaa Mahmoudy, Abdelkader Dabagh, Mohamed Chiban, Fouad Sinan, Soulaiman Iaich, Mohamed Zerbet
Summary: Adsorption is a cost-effective method for removing pollutants from water, and clay minerals can be converted into biosorbents for this purpose. This review article summarizes the structure, properties, and applications of different types of natural clays, as well as the process and mechanism of adsorption of heavy metals and toxic dyes. The Langmuir and Freundlich models are commonly used for isotherm analysis, and the majority of adsorption kinetics studies are based on the pseudo-second-order model. Modifying clays can improve their adsorption efficiency, and these materials are environmentally friendly and beneficial for industrial ecology.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Environmental Sciences
A. Aboussabek, R. Aziam, S. El Qdhy, L. Boukarma, M. Zerbet, F. Sinan, M. Chiban
Summary: In this study, magnetic hybrid clay CT@Fe3O4 was synthesized for wastewater treatment using a straightforward and efficient method. The adsorbents were characterized and evaluated, showing a significant increase in surface area and pore volume compared to raw clay. The adsorption performance of CT@Fe3O4 for AB113 dye was studied in batch and fixed-bed column adsorption experiments, revealing its superior adsorption capacity. Kinetic modeling and analysis suggested that the Thomas and Yoon-Nelson models offered a more accurate explanation of the experimental outcomes. The adsorption mechanism of CT@Fe3O4 was found to involve multiple interactions. Overall, CT@Fe3O4 proved to be a suitable and effective adsorbent for the sequestration of AB113 dye from aqueous solutions.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Abdelkader Dabagh, Ridouan Benhiti, Mohamed EL-Habacha, Abdeljalil Ait Ichou, M. 'hamed Abali, Abdallah Assouani, Mahmoudy Guellaa, Avni Berisha, Rachid Hsissou, Fouad Sinan, Mohamed Zerbet
Summary: This study investigated the efficiency of treated plant Carpobrotus edulis as a bio-sorbent for removing orange G and crystal violet dyes from aqueous solution. The effects of parameters such as bioadsorbent dose, contact time, initial concentration, temperature, and pH were tested using Taguchi experimental design. The study found that the initial concentration, bioadsorbent dose, and contact time were the main factors affecting dye removal, while the effects of pH and temperature were minimal. Under optimal conditions, the maximum removal efficiency for orange G and crystal violet dyes was 97.93% and 92.68% respectively. The study also analyzed the binding mechanism between dyes and the adsorbent surface.
Article
Chemistry, Applied
Ahmed Zaghloul, Abdeljalil Ait Ichou, Mhamed Abali, Ridouan Benhiti, Amina Soudani, Gabriela Carja, Mohamed Chiban, Mohamed Zerbet, Fouad Sinan
Summary: The adsorption of Congo red dye on two synthetic clay adsorbents, MgAl-LDH (2:1) and MgAl-LDH (3:1), was investigated in this study. The adsorption process was found to be described by the Langmuir isotherm, with maximum adsorption capacities of 285.71 and 166.66 mg/g for MgAl-LDH (2:1) and MgAl-LDH (3:1) respectively. Thermodynamic parameters were evaluated to predict the nature of adsorption.
BIOINTERFACE RESEARCH IN APPLIED CHEMISTRY
(2021)
Proceedings Paper
Materials Science, Multidisciplinary
M'hamed Abali, Abdeljalil Ait Ichou, Ahmed Zaghloul, Fouad Sinan, Mohamed Zerbet
Summary: The infiltration-percolation process at the M'zar WWTP is effective for depolluting and decontaminating effluent, although it can increase nitrate ions. Crushed shrimp shell particles show promise in removing nitrate ions from municipal wastewater effluents.
MATERIALS TODAY-PROCEEDINGS
(2021)
Proceedings Paper
Materials Science, Multidisciplinary
Ahmed Zaghloul, Ridouan Benhiti, Abdeljalil Ait Ichou, Gabriela Carja, Amina Soudani, Mohamed Zerbet, Fouad Sinan, Mohamed Chiban
Summary: The MgAl layered double hydroxide was synthesized using the urea method and applied for the removal of methyl orange dye from aqueous solutions. The study found that the MgAl-LDH adsorbent was effective in removing anionic dyes from industrial wastewater.
MATERIALS TODAY-PROCEEDINGS
(2021)
Article
Environmental Sciences
Ahmed Zaghloul, Ridouan Benhiti, M'hamed Abali, Abdeljalil Ait Ichou, Amina Soudani, Mohamed Chiban, Mohamed Zerbet, Fouad Sinan
Summary: In this study, Mg/Al layered double hydroxides intercalated with carbonate ions were synthesized and used as adsorbents to remove methyl orange from aqueous solution. The pseudo-second-order model accurately reflected the adsorption kinetics, with maximum adsorption capacities of 625 and 526.31 mg g(-1) for LDH-Urea and LDH-Cop, respectively. The results indicate that LDH-Urea and LDH-Cop are effective adsorbents for removing anionic dyes from industrial wastewater.
EURO-MEDITERRANEAN JOURNAL FOR ENVIRONMENTAL INTEGRATION
(2021)