Article
Environmental Sciences
Deva Nand Sharma, Anil Yadav
Summary: This paper presents a novel adsorbent, Chhotidudhi, for the removal of nickel ions from aqueous solutions. The adsorbent was characterized using FTIR, XRD, SEM, and TGA. The adsorbent showed strong bond with metals and had an amorphous structure with a porous morphology. At optimized conditions, the adsorption capacity for the adsorbent was 52.4 mg/g and 109.05 mg/g, with removal efficiencies of 81.6% and 93.8% for ETR and ETA, respectively. The experimental results fit well with Langmuir and pseudo-second-order reactions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
D. Prabu, P. Senthil Kumar, B. Senthil Rathi, S. Sathish, K. Vijai Anand, J. Aravind Kumar, Osama B. Mohammed, P. Silambarasan
Summary: This study established the potential of Fe3O4-BAC adsorbent by coating activated carbon with a nano adsorbent. The adsorbent exhibited superior magnetic behavior, high adsorption capacity, and removal efficiency under certain conditions.
ENVIRONMENTAL RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Sandra Pioquinto Garcia, Luis Angel Garza Rodriguez, Diana Bustos Martinez, Felipe de Jesus Cerino Cordova, Eduardo Soto Regalado, Sylvain Giraudet, Nancy Elizabeth Davila Guzman
Summary: The study investigates the potential use of raw and expanded perlite as low-cost adsorbents for biogas purification, finding that expanded perlite has moderate adsorption capacity and follows Linear-Driving Force model in adsorption kinetics.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Chemical
Hassan H. Hammud, Ranjith Kumar Karnati, Maryam Al Shafee, Youssef Fawaz, Hanafy Holail
Summary: The study focused on the preparation of carbon-rich hydrochar by hydrothermal carbonization method, which showed sponge-like cubic mesoporous nanostructures after chemical activation. The activated material exhibited a high adsorption capacity for lead ions and demonstrated stable removal efficiency over multiple cycles.
CHEMICAL ENGINEERING COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Anargha P. Nambiar, Rahul Pillai, Yugesh Vadikkeettil, Mallika Sanyal, Pranav S. Shrivastav
Summary: Poly(vinyl alcohol) and halloysite nanotube composite films were prepared using a solution casting methodology for enhanced adsorption of methylene blue dye. The study showed effective adsorption under optimized conditions, with good fitting of adsorption isotherms and kinetic models to the experimental data.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Characterization & Testing
Xiaoqing Cai, Ying Chen, Rao-ping Liao, Ze-xiang Wu, Chuang Yu, Tiantian Shi, Yinxia Wu, Jifang Jiang
Summary: A study investigated the adsorption characteristics of sodium polyacrylate-modified bentonite (SPB) on copper, revealing that SPB not only enhances the impermeability and chemical resistance of bentonite but also significantly improves heavy metal adsorption capacity.
JOURNAL OF TESTING AND EVALUATION
(2021)
Article
Engineering, Environmental
Nooraddein A. Ekrayem, Almahdi A. Alhwaige, Wael Elhrari, Mohamed Amer
Summary: The study developed eco-friendly polymeric spheres derived from crosslinking of chitosan (CTS) with different polyesters. The spheres showed enhanced structure and stability in aqueous media, with decreased hydrophilicity, and were effective in adsorbing lead ions (Pb2+) from aqueous solutions. The experimental data was fitted well with the Freundlich isotherm model, showing the best fit for the adsorption process.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Review
Polymer Science
Vipin Malik, Laishram Saya, Drashya Gautam, Shallu Sachdeva, Neelu Dheer, Dinesh Kumar Arya, Geetu Gambhir, Sunita Hooda
Summary: This review focuses on the efficiency of tamarind-based nanocomposites as potential adsorbents for various harmful organic and inorganic water pollutants. It provides a comprehensive analysis of the fabrication routes, adsorption isotherms, kinetic and thermodynamic modeling, as well as the adsorption mechanism and recyclability of these adsorbents. Factors affecting the adsorption behavior and a comparison with other nanomaterials are also discussed. Based on the literature surveyed, there is great potential for future research on tamarind-based nanocomposites as low-cost biomaterials in water purification.
Article
Engineering, Environmental
Jiwon Chung, Neha Sharma, Minyoung Kim, Kyusik Yun
Summary: The study investigated the adsorption of methylene blue from wastewaters using activated carbon derived from sucrose and melamine. The synthesized adsorbent showed high specific surface area and fast adsorption rate, making it effective in removing methylene blue from wastewater.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Environmental
A. H. Ali, G. A. Dakroury, M. S. Hagag, Sh M. Abdo, K. F. Allan
Summary: In this study, a novel composite P(AA-co-AM/PJM-T) was synthesized by copolymerizing acrylic acid, acrylamide, and 16,16-dimethylheptadecan-1-amine using gamma irradiation. The composite was characterized and utilized as a sorbent for rare earth elements from monazite. The sorption process was found to be spontaneous, with a maximum adsorption capacity of 182.15 ± 3.73 mg g(-1) at 25 degrees Celsius.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2022)
Article
Chemistry, Physical
Dongliang Yang, Feipeng Cheng, Le Chang, Dengfeng Wu
Summary: Developing efficient and low-cost adsorbent for removing heavy metal ions from aqueous solution is crucial for environmental protection. In this study, low quality natural bentonite was purified and sodium-modified to enhance its adsorption capacity for Pb2+. The optimized adsorption conditions were pH = 5, adsorbent dosage of 0.2 g, initial Pb2+ concentration of 400 mg/L, and adsorption time of 120 min. The adsorption process followed Freundlich isotherm and pseudo-second-order kinetics adsorption equations. Adsorption pathways of Pb2+ on sodium bentonite included ion exchange, surface hydroxyl functional group capture, electrostatic attraction, and chemical precipitation. This research provides technical support for the wider application of bentonite as an adsorbent material.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Environmental Studies
Adeyinka Sikiru Yusuff
Summary: The study investigated the use of Aluminium oxide modified onion skin waste for the adsorption of metal ions (Pb2+ and Cd2+) and analyzed the relationships between sorbent properties and metal ion sorption. Optimum values for initial concentration, contact time, adsorbent dosage, and pH were found to be 10 mg/L, 120 min, 1.6 g/L, and 6.0 respectively, resulting in maximum removal percentages of 91.23% for Pb2+ and 94.10% for Cd2+. Isotherm and kinetic studies suggested a multilayer adsorbate-adsorbent system with chemisorption mechanism dominance, and concluded that onion skin waste is a viable, cheap, and effective alternative for removing heavy metal ions from water/wastewater.
ENERGY & ENVIRONMENT
(2022)
Article
Chemistry, Multidisciplinary
Misfer Al Hawash, Rajeev Kumar, Mohamed A. Barakat
Summary: In this study, polyaniline and graphene oxide nanosheet immobilized granular tea waste (PANI/GO@GTW) were synthesized for the removal of anionic and cationic contaminants from groundwater. The results showed that PANI/GO@GTW exhibited high adsorption capacity and efficient removal of bromide ions.
Article
Chemistry, Physical
Tariq A. Altalhi, Mohamed M. Ibrahim, Gaber A. M. Mersal, M. H. H. Mahmoud, Tushar Kumeria, Mohamed G. El-Desouky, Ashraf A. El-Bindary, Mohamed A. El-Bindary
Summary: In this study, mango seeds activated carbon (MSAC) nanoparticles were prepared with high biocompatibility for potential use as drug carriers. The experimental results showed that the nanocomposite significantly enhanced the adsorption performance of the anti-cancer drug DOX, indicating its potential in drug delivery applications.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Materials Science, Paper & Wood
Sarita Yadav, Aruna Yadav, Nisha Bagotia, Ashok K. Sharma, Surender Kumar
Summary: This study synthesized a green bio-composite adsorbent based on Pennisetum glaucum raw material (RM) containing 0.5% functionalized carbon nanotube (0.5% CNT + RM). The morphology and physicochemical properties of the bio-composite were investigated using various techniques. The adsorption efficiency of the prepared biocomposite adsorbents was evaluated for the removal of cationic dyes from single and multi-component systems. The results showed that the adsorbent had excellent adsorption capacity and regeneration capability, making it suitable for practical applications.
