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Kumar JA, Krithiga T, Narendrakumar G, Prakash P, Balasankar K, Sathish S, Prabu D, Pushkala DP, Marraiki N, Ramu AG, Choi D. Effect of Ca 2+ ions on naphthalene adsorption/desorption onto calcium oxide nanoparticle: Adsorption isotherm, kinetics and regeneration studies. ENVIRONMENTAL RESEARCH 2022; 204:112070. [PMID: 34555407 DOI: 10.1016/j.envres.2021.112070] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 09/07/2021] [Accepted: 09/08/2021] [Indexed: 06/13/2023]
Abstract
The adsorptive nature of calcium oxide nanoparticles in aqueous sample of naphthalene in presence of Ca2+ ions was estimated. Enhanced efficiency of calcium oxide regeneration (90%) with the aid of calcium chloride in the solution concentration of 0.002-0.1 M was depicted. The less degree of toxic naphthalene desorption merged with SEM, FTIR and XRD characterization data portrays the importance of naphthalene adsorption onto calcium oxide using calcium chloride for regeneration. Batch adsorption studies were performed to evaluate the operating parameters such as pH, naphthalene concentration, contact time and impact of Ca2+ on naphthalene study. The adsorption isotherm of naphthalene on calcium oxide nanoparticle was described by Langmuir, Freundlich, Temkin and Dubinin Radushkevich and theoretical maximum monolayer adsorption capacity was found to be 63.81 mg/g at 303 K. The adsorption kinetic best fitted with pseudo second order kinetic model. The positive influence of making the addition of Ca2+ ions into naphthalene solution for its rapid adsorption was elucidated which is leaded by a probable increase in sorption capacity for naphthalene molecules at lower concentrations. The stable nature of crystallinity of calcium oxide and a less degree of naphthalene molecules leaching during consecutive cycles of adsorptive process and nanoparticle regeneration was also scrutinized.
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Affiliation(s)
- J Aravind Kumar
- Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 600 119, India.
| | - T Krithiga
- Department of Chemistry, Sathyabama Institute of Science and Technology, Chennai, 600 119, India
| | - G Narendrakumar
- Department of Biotechnology, Sathyabama Institute of Science and Technology, Chennai, 600 119, India
| | - P Prakash
- Department of Biotechnology, Sathyabama Institute of Science and Technology, Chennai, 600 119, India
| | - K Balasankar
- Department of Biomedical Engineering, Sathyabama Institute of Science and Technology, Chennai, 600 119, India
| | - S Sathish
- Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 600 119, India
| | - D Prabu
- Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 600 119, India
| | - D Purna Pushkala
- Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 600 119, India
| | - Najat Marraiki
- Department of Botany and Microbiology, College of Sciences, King Saud University, P.O 2455, Riyadh, 11451, Saudi Arabia
| | - A G Ramu
- Department of Materials Science and Engineering, Hongik University, 2639-Sejong-ro, Jochiwon-eup, Sejong city, 30016, Republic of Korea
| | - Dongjin Choi
- Department of Materials Science and Engineering, Hongik University, 2639-Sejong-ro, Jochiwon-eup, Sejong city, 30016, Republic of Korea
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Aravind Kumar J, Krithiga T, Vijai Anand K, Sathish S, Karthick Raja Namasivayam S, Renita A, Hosseini-Bandegharaei A, Praveenkumar T, Rajasimman M, Bhat N, Dutta S. Kinetics and regression analysis of phenanthrene adsorption on the nanocomposite of CaO and activated carbon: Characterization, regeneration, and mechanistic approach. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116080] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Jalili V, Barkhordari A, Ghiasvand A. Solid-phase microextraction technique for sampling and preconcentration of polycyclic aromatic hydrocarbons: A review. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104967] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Zhang D, Qiu J, Shi L, Liu Y, Pan B, Xing B. The mechanisms and environmental implications of engineered nanoparticles dispersion. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 722:137781. [PMID: 32199363 DOI: 10.1016/j.scitotenv.2020.137781] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 02/28/2020] [Accepted: 03/05/2020] [Indexed: 06/10/2023]
Abstract
Dispersion of engineered nanoparticles (ENPs) has drawn special research attentions because the environmental behavior, risks, and applications of ENPs are greatly dependent on their dispersing status. This review summarizes the latest research progress of dispersion mechanisms, environmental applications in contaminants adsorption, and toxicity of ENPs dispersed in liquid and in solid matrix (3D-ENPs). Dispersion mechanisms of ENPs, including steric hindrance, electrostatic repulsion and "micelle wrapping" are well understood in single dispersing agent, however, the prediction of ENPs dispersion in real environments is not straightforward because of the diversity of structures, components, and properties of natural organic molecule mixtures. The adsorption characteristics, depending on the exposed surface areas in liquid, are significantly different between dispersed and aggregated ENPs. Comparing with the aggregated ENPs, the toxicity of dispersed ENPs is generally enhanced due to the increased uptake, released metal ions, carried contaminants, and induced ROS. 3D-ENPs not only inherit the excellent adsorption performance of ENPs dispersed in liquid, but also are beneficial to the separation and recycle from aqueous solutions due to their 3D rigid structures. However, the adsorption mechanisms as affected by environmental conditions are still unclear. Additionally, the potential risks of 3D-ENPs should be paid more attentions, with an emphasis on free radicals and stability of 3D structure.
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Affiliation(s)
- Di Zhang
- Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China; Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Kunming 650500, China
| | - Junke Qiu
- Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China; Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Kunming 650500, China
| | - Lin Shi
- Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China; Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Kunming 650500, China
| | - Yang Liu
- Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China; Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Kunming 650500, China
| | - Bo Pan
- Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China; Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Kunming 650500, China.
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003, United States.
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Zindler F, Glomstad B, Altin D, Liu J, Jenssen BM, Booth AM. Phenanthrene Bioavailability and Toxicity to Daphnia magna in the Presence of Carbon Nanotubes with Different Physicochemical Properties. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:12446-12454. [PMID: 27700057 DOI: 10.1021/acs.est.6b03228] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Studies investigating the effect of carbon nanotubes (CNTs) on the bioavailability and toxicity of hydrophobic organic compounds in aquatic environments have generated contradictory results, and the influence of different CNT properties remains unknown. Here, the adsorption of the polycyclic aromatic hydrocarbon phenanthrene (70-735 μg/L) to five types of CNTs exhibiting different physical and chemical properties was studied. The CNTs were dispersed in the presence of natural organic matter (nominally 20 mg/L) in order to increase the environmental relevance of the study. Furthermore, the bioavailability and toxicity of phenanthrene to Daphnia magna in the absence and presence of dispersed CNTs was investigated. Both CNT dispersion and adsorption of phenanthrene appeared to be influenced by CNT physical properties (diameter and specific surface area). However, dispersion and phenanthrene adsorption was not influenced by CNT surface chemical properties (surface oxygen content), under the conditions tested. Based on nominal phenanthrene concentrations, a reduction in toxicity to D. magna was observed during coexposure to phenanthrene and two types of CNTs, while for the others, no influence on phenanthrene toxicity was observed. Based on freely dissolved concentrations, however, an increased toxicity was observed in the presence of all CNTs, indicating bioavailability of CNT-adsorbed phenanthrene to D. magna.
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Affiliation(s)
- Florian Zindler
- Department of Biology, Norwegian University of Science and Technology , Trondheim NO-7491, Norway
| | - Berit Glomstad
- Department of Biology, Norwegian University of Science and Technology , Trondheim NO-7491, Norway
| | | | - Jingfu Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085, China
| | - Bjørn M Jenssen
- Department of Biology, Norwegian University of Science and Technology , Trondheim NO-7491, Norway
| | - Andy M Booth
- SINTEF Materials and Chemistry, Trondheim NO-7465, Norway
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