Article
Engineering, Chemical
Lei Liu, Seongmin Jin, Yongha Park, Kyung-Min Kim, Chang-Ha Lee
Summary: The study investigated the sorption equilibria and kinetics of CO2, N-2, and H2O on polyethyleneimine (PEI)-impregnated silica (PEI-silica) for CO2 capture by temperature-swing adsorption (TSA). It was found that PEI-silica exhibited highly enhanced adsorption affinity for CO2, resulting in chemisorption, while adsorption of H2O and N-2 showed typical physisorption behavior. The study also showed that PEI-silica had a high CO2-sorption capacity and a high sorption rate, making it a promising material for CO2 capture applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Perumal Karthikeyan, Sankaran Meenakshi
Summary: A novel and environmentally-friendly chitosan encapsulated magnetic kaolin beads were fabricated and applied for the adsorption of phosphate and nitrate ions from water in this study. The synthesized beads showed promising potential as selective and effective adsorbents for the removal of phosphate and nitrate ions from aqueous solutions.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Engineering, Environmental
Laishram Saya, W. Rameshwor Singh, Sunita Hooda
Summary: Organic-inorganic nanoblends, such as polysaccharide-blended-inorganic ones, have versatile applications and have gained significant research attention. In this study, a magnetic guar gum/graphene oxide nanocomposite blended with CuO was successfully prepared and investigated for its adsorption capacity for ciprofloxacin removal. The results showed that the nanocomposite exhibited excellent adsorption capacity and the adsorption process was spontaneous.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Article
Polymer Science
Jorge Lozano-Montante, Raquel Garza-Hernandez, Mario Sanchez, Edgar Moran-Palacio, Guillermo Nino-Medina, Mario Almada, Luis Hernandez-Garcia
Summary: This study successfully achieved the adsorption of Pb(II) ions in water by cellulose derivatives, and identified that cellulose composite materials cross-linked with chitosan modified with 2-methylpyridine and succinic anhydride have higher adsorption capacities. Kinetic data showed a pseudo-second-order behavior in the adsorption process.
Article
Environmental Sciences
Lina Ramirez Arenas, Philippe Le Coustumer, Stephan Ramseier Gentile, Stephane Zimmermann, Serge Stoll
Summary: The presence of nanoparticles in drinking water raises concerns about their potential risks to human health and the efficacy of water treatment plants in removing them. This study examines the efficiency of granular activated carbon (GAC) in removing CeO2 nanoparticles. The results show that GAC has a good affinity for nanoparticles, with higher adsorption capacity and removal efficiency in lake water compared to ultrapure water. The adsorption mechanism is mainly controlled by electrostatic attractions, and mass transfer processes play a role in the removal of nanoparticles in lake water.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Abdulrahman Abu-Nada, Ahmed Abdala, Gordon McKay
Summary: Graphene oxide (GO) was successfully synthesized and characterized in this study, showing excellent adsorption capability for removing Sr (II) from aqueous solutions. The adsorption equilibrium and kinetic results were in agreement with the Langmuir isotherm model and the pseudo-second-order kinetic model. The maximum strontium adsorption capacity reached 131.4 mg/g, suggesting potential applications in wastewater treatment.
Article
Environmental Sciences
Di Zhao, Shang-kai Qiu, Meng-meng Li, Yuan Luo, Li-sheng Zhang, Meng-han Feng, Ming-yao Yuan, Ke-qiang Zhang, Feng Wang
Summary: This study investigated the adsorption of soil organic phosphorus by lanthanum modified biochar, traditional gypsum, and zeolite using phytic acid. The results showed that modified biochar had the strongest affinity for phytate phosphorus and the ability to store phosphorus, fitting well with Langmuir isotherm and pseudo-second-order kinetic equation. Overall, the combination of modified biochar and soil phytate phosphorus can provide a good theoretical basis for reducing the loss of soil organic phosphorus.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
M. H. Omidi, M. H. Ahmadi Azqhandi, B. Ghalami-Choobar
Summary: In this study, a nanocomposite material consisting of reduced graphene oxide, nickel-aluminum layered double hydroxide, and poly acrylic acid was used to remove tetracycline from water. The nanocomposite showed high removal efficiency and adsorption capacity, surpassing previously reported adsorbents.
Article
Environmental Sciences
Ula Rozman, Barbara Klun, Gregor Marolt, Jernej Imperl, Gabriela Kalcikova
Summary: In this study, the adsorption and subsequent desorption of titanium dioxide (nTiO2) and zinc oxide (nZnO) nanoparticles, as well as polyethylene microplastics (MPs), in aquatic media were investigated. The results showed that nZnO had a faster adsorption rate than nTiO2, but nTiO2 had a higher adsorption extent on MPs. The low adsorption of nZnO could be attributed to the partial dissolution of zinc from nZnO, which resulted in soluble zinc complexes not being adsorbed on MPs. The adsorption process was found to be controlled by physisorption for both nTiO2 and nZnO. Meanwhile, the desorption of nTiO2 was low and independent of pH, while the desorption of nZnO was pH-dependent, with a higher desorption rate at a slightly acidic pH. These findings provide insights into the complex interactions and fate of MPs and metal engineered nanoparticles in the aquatic environment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Energy & Fuels
Hedi Jedli, M. M. Almoneef, Mohamed Mbarek, Abdessalem Jbara, Khalifa Slimi
Summary: The aim of this research is to evaluate the adsorption isotherms and kinetics of CO2 on zeolite ZSM-5. The Langmuir model provided the best fit for CO2 adsorption, indicating that it is a spontaneous and exothermic process. The kinetics of CO2 adsorption on the adsorbent were found to be influenced by temperature and pressure. The results can be utilized in CO2 separation and adsorption system performance evaluation.
Article
Green & Sustainable Science & Technology
Ahmed S. Alsaman, E. M. M. Ibrahim, M. Salem Ahmed, A. M. Farid, Ehab S. Ali, Ahmed A. Askalany
Summary: This study presents an innovative composite material, Maxsorb III/CaCl2, which demonstrates high adsorption capacity, cooling capacity, and freshwater production. Through acid treatment and impregnation, the composite material achieved a water uptake of 1.35 kgH2O/kgMax/CaCl2. The simulation model showed promising results with a SDWP of 25.4 m3/tonMax/CaCl2 per day, SCP 717.4 W/kgMax/CaCl2, and COP 0.704 at 85 degrees C.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Francisco Jose de Paula Filho, Yago Neco Teixeira, Vinicius Pereira Bacurau, Anderson Zhong Fan, Jorge Marcell Coelho Menezes, Thiago Mielle Brito Ferreira Oliveira, Raimundo Nonato Pereira Teixeira, Henrique Douglas Melo Coutinho, Ronaldo Ferreira do Nascimento
Summary: High phosphate concentrations in natural waters can lead to eutrophication problems and harm the fauna and flora of ecosystems. This study investigated the adsorption capacity of fruit peel ash from Caryocar coriaceum Wittm in removing phosphate from water solutions. The ash showed high adsorption capacity and followed the Elovich and Langmuir models for kinetics and equilibrium, respectively. The highest removal efficiency was 97.08%. These results suggest that fruit peel ash has potential as a natural bioadsorbent for phosphate removal.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Biotechnology & Applied Microbiology
Saloni Sharma, Hema Setia, Amrit Pal Toor
Summary: This study demonstrates the potential of using isolated bacterial strain WAH1 for biodegradation of Diclofenac Sodium (DS), showing strong adaptive ability and degradation efficiency at high DS concentrations. The results suggest a promising application of the strain WAH1 in the treatment of DS contaminated sites.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Construction & Building Technology
Shengnan Sha, Yihan Ma, Lei Lei, Yanrong Zhang, Yi Liu, Yuchong Xiao, Caijun Shi
Summary: This paper investigates the effect of PCE on the growth of ettringite through a series of experiments. The results show that PCE adsorption changes the proportion, stability, and morphology of ettringite. During the growth of ettringite crystals, sulfate ions and PCE preferentially adsorb on the faces of rectangular prism, limiting their growth on the {1010} faces and resulting in longitudinal growth.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Candelaria Tejada-Tovar, Angel Villabona-Ortiz, Angel Dario Gonzalez-Delgado
Summary: This study evaluated the effective adsorption of nitrate ions using bioadsorbents prepared from yam skins. Results showed promising adsorption capacities for nitrate anions, with the carbon synthesized from yam skins and modified with ammonium chloride exhibiting remarkable behavior compared to commercial carbon and NH4Cl-modified yam skins.
APPLIED SCIENCES-BASEL
(2021)
