Article
Engineering, Environmental
Siyuan Pan, Jialin Shen, Ziniu Deng, Xiaolin Zhang, Bingcai Pan
Summary: This study successfully prepared a nanocomposite ZrP@N001 by incorporating ultrafine ZrP into a commercially available gel-type cation exchanger, demonstrating higher adsorption efficiency and selectivity for heavy metals compared to conventional methods.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Talia Tene, Stefano Bellucci, Marco Guevara, Edwin Viteri, Malvin Arias Polanco, Orlando Salguero, Eder Vera-Guzman, Sebastian Valladares, Andrea Scarcello, Francesca Alessandro, Lorenzo S. Caputi, Cristian Vacacela Gomez
Summary: In this study, pristine reduced graphene oxide (rGO) was used to remove cationic pollutants from water, such as methylene blue and mercury ions. The pristine rGO showed high adsorption capacity and short adsorption time, and exhibited a mixed physisorption-chemisorption process. These findings provide a new perspective for the removal of cationic pollutants using oxidized graphene materials.
Article
Environmental Sciences
Wei Liao, Di Bao, Hui-qiang Li, Ping Yang
Summary: Two novel adsorbents, LDH@GO-NH2 and LDH@GO-SH, were synthesized for enhanced adsorption of heavy metal ions (Cu(II) and Cd(II)). LDH@GO-SH exhibited a significantly higher maximum adsorption capacity for Cd(II) compared to LDH@GO-NH2, with proposed adsorption mechanisms including precipitation formation, isomorphic substitution, and complexation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Polymer Science
Raja Saad Alruwais, Waheed A. Adeosun, Hadi M. Marwani, Mohammad Jawaid, Abdullah M. Asiri, Anish Khan
Summary: This study successfully synthesized and applied PANI-GO-APTES composite material for the detection of Pb2+ in aqueous solutions, with a detection limit of 0.0053 mu M. The material also demonstrated repeatability and rapid response during the electrochemical reduction of Pb2+, making it a potential sensor for environmental and human health safety.
Article
Environmental Sciences
Maria Aziz, Rukhsanda Aziz, Muhammad Tariq Rafiq, Maryam Abbasi, Mehwish Taneez, Muhammad Usman Azhar, Ahmad El Askary, Basem H. Elesawy, Emad M. Eed, Amany S. Khalifa, Abdul Qayyum
Summary: This study presents the synthesis of activated orange peel combined with selenium nano-particles to remove lead and chromium from wastewater. The experimental results demonstrate that the synthesized nanocomposite material shows excellent adsorption capacity for heavy metals, indicating its potential application in water treatment.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Zhuangzhuang Chu, Wei Wang, Mengping Yin, Zhuohong Yang
Summary: Rapid urban industrialization and agricultural production have resulted in excessive discharge of phosphate into aquatic systems, causing water pollution. A novel phosphate capture nanocomposite (PEI-PW@Zr) with mild preparation conditions, environmental friendliness, recyclability, and high efficiency has been developed by modifying aminated nanowood with a zirconium (Zr) component. The Zr component enables phosphate capture and the porous structure allows for mass transfer, resulting in excellent adsorption efficiency. The nanocomposite maintains more than 80% phosphate adsorption efficiency after ten cycles, indicating its recyclability and potential for repeated use. This compressible nanocomposite provides insights into efficient phosphate removal and the functionalization of biomass-based composites.
Article
Environmental Sciences
Abdelaziz El Mouden, Noureddine El Messaoudi, Abdelqader El Guerraf, Amal Bouich, Valbone Mehmeti, Abdellah Lacherai, Amane Jada, Juliana Heloisa Pine Americo-Pinheiro
Summary: The composite Fe3O4 nanoparticles (DQ@Fe3O4) based on natural clay (dolomite and quartz) have been extensively studied for the removal of heavy metal ion contaminants from residual waters. Optimized experimental parameters showed that DQ@Fe3O4 achieved maximum removals of 95.02% for Pb2+ and 86.89% for Cd2+ at specific conditions. Characterization techniques confirmed the co-precipitation of dolomite-quartz by Fe3O4 nanoparticles. Kinetic and equilibrium studies further supported the suitability of pseudo-second-order kinetic and Langmuir isotherm models for metal binding onto the DQ@Fe3O4 surface. Thermodynamic and Monte Carlo simulation data demonstrated the spontaneity and effectiveness of the adsorption process. In summary, DQ@Fe3O4 can be considered as a cost-effective adsorbent with great potential for wastewater treatment.
ENVIRONMENTAL RESEARCH
(2023)
Article
Multidisciplinary Sciences
Adina-Elena Segneanu, Catalin Nicolae Marin, Gabriela Vlase, Claudiu Cepan, Maria Mihailescu, Cornelia Muntean, Ioan Grozescu
Summary: Sustainable waste and water management are key components of the newest EU policy regarding the circular economy. This study investigated the development of a newly engineered adsorbent for the removal of cadmium from aqueous solutions using functionalized waste materials. The results showed that the adsorbent had high efficiency in removing cadmium, and its properties were thoroughly characterized. The study also examined the influence of various reaction parameters on the adsorption process.
SCIENTIFIC REPORTS
(2022)
Article
Nanoscience & Nanotechnology
Xiaoxing Zhang, Hui Liu, Jin Yang, Li Zhang, Binxia Cao, Libo Liu, Weimin Gong
Summary: Pollen@FePO4 showed faster sorption kinetics and higher adsorption capacities for Cd2+ and Pb2+ ions compared to unmodified pollen, indicating its potential as a promising material for heavy metal ion removal in aqueous solutions. The possible adsorption mechanism involves electrostatic and chemisorption for Cd2+ and mainly complexion for Pb2+.
REVIEWS ON ADVANCED MATERIALS SCIENCE
(2021)
Article
Environmental Sciences
Wei Gao, Zaixing Li, Sijie Yin, Miaoyu Zhang, Xiaoshuai Liu, Yanfang Liu
Summary: A zirconium-modified biochar material was synthesized and used for phosphate adsorption in water. The material exhibited good adsorption performance and stability. The adsorption of phosphate was influenced by pH and coexisting anions, and the adsorption kinetics followed the pseudo-second-order model. This research is of significance for water pollution control.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Azam Amini Herab, Dariush Salari, Alireza Ostadrahimi, Ali Olad
Summary: This study extracted inulin biopolymer from Jerusalem artichoke plant using ultrasound and synthesized inulin-Fe3O4 nanocomposite for the first time. The results showed that the nanocomposite has high adsorption capacity and magnetic separation performance, especially for Hg2+. Moreover, the synthesis of this nanocomposite is cost-effective and it can be reused multiple times.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Environmental
Juan Qin, Yeting Fang, Changjin Ou, Junyue Wang, Fang Huang, Qian Wen, Zhipeng Liao, Jian Shi
Summary: A nanosized MgO modified TOB was fabricated for removing Cd2+ and Cu2+ from water, showing superior adsorption performance with equilibrium achieved within 30 and 60 minutes respectively. The modified TOB had theoretical adsorption capacities of 1428.57 mg/g for Cd2+ and 909.09 mg/g for Cu2+. The adsorption followed pseudo-second-order and Langmuir isotherm models, indicating chemical adsorption. The modified TOB efficiently removed contaminants even at a pH of 2.0.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Biochemistry & Molecular Biology
Mohammad Javad Sharifi, Amideddin Nouralishahi, Ahmad Hallajisani
Summary: Recently, chitosan-magnetite nanocomposite (CMNC) has been synthesized as a promising adsorbent for water treatment, with enhanced adsorption capabilities for nickel and cobalt. The physicochemical properties of CMNC were investigated, confirming the uniform dispersion of magnetite nanoparticles and its significant magnetic properties. Adsorption experiments showed high capacities for Ni2+ and Co2+, and the Langmuir isotherm was found to best fit the adsorption data, indicating energetically homogenous active sites on CMNC. Kinetic analysis suggested that chemical sorption and mass transfer steps both influence the adsorption process. Thermodynamic parameters showed that the adsorption process on CMNC was endo-thermic and spontaneous, with stronger interactions between CMNC and Co2+.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Engineering, Environmental
Juan Qin, Sujuan Yuan, Changjin Ou, Zhipeng Liao, Jian Shi
Summary: Nanoscale magnesium oxide and activated carbon were successfully loaded onto tobermorite to form a new composite material (TOB@C@MgO). This composite material exhibited a large specific surface area and good sedimentation property, and effectively removed Cd2+, Cu2+, and Mn2+ from wastewater.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Physical
Haya A. Abubshait, Ahmed A. Farag, Mohamed A. El-Raouf, Nabel A. Negm, Eslam A. Mohamed
Summary: This study focused on the removal of Cu2+ and Pb2+ metal ions from aqueous solution using modified graphene oxide-thiosemicarbazide (mGO-TSC) nanocomposite. The results showed that immersion time and adsorbent amount significantly influenced the adsorption efficiency, while initial metal ion concentration and pH of the medium also played important roles. Adsorption followed Freundlich adsorption isotherms and pseudo-second-order kinetic model through inter-particle diffusion mechanism. The modified adsorbent (mGO-TSC) exhibited effective reusability for multiple rounds with high adsorption efficiency for both Cu2+ and Pb2+.
JOURNAL OF MOLECULAR LIQUIDS
(2021)