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Kinetic Study of Nitrate Removal from Aqueous Solutions Using Copper-Coated Iron Nanoparticles.
Bull Environ Contam Toxicol 2017; 98(3):359-365BE

Abstract

Nitrates are considered hazard compounds for human health due to their tendency to be reduced to nitrites, in particular in reducing environment. Nano zero valent iron (nZVI) represents an efficient and low-cost adsorbent/reductive agent for nitrate removal from groundwater and wastewaters and a little addition of a second metal species (Cu, Pd, Ni, Ag) has proven to increase process effectiveness, by enhancing stability and oxidation resistance of nanoparticles. In this work Cu/Fe nanoparticles were loaded in a NO3- solution (100 mg L-1) and the removal efficiency was tested by monitoring nitrate concentration at selected time intervals. Results showed that the nitrate removal process involves both reduction and adsorption processes: the removal mechanism has been investigated, and the pseudo-first-order and pseudo-second-order-adsorption kinetic models were successfully tested.

Authors+Show Affiliations

Dipartimento di Ingegneria Chimica Materiali Ambiente, Sapienza Università di Roma, Via Eudossiana 18, 00184, Rome, Italy.Dipartimento di Ingegneria Chimica Materiali Ambiente, Sapienza Università di Roma, Via Eudossiana 18, 00184, Rome, Italy. luca.dipalma@uniroma1.it.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27372457

Citation

Vilardi, Giorgio, and Luca Di Palma. "Kinetic Study of Nitrate Removal From Aqueous Solutions Using Copper-Coated Iron Nanoparticles." Bulletin of Environmental Contamination and Toxicology, vol. 98, no. 3, 2017, pp. 359-365.
Vilardi G, Di Palma L. Kinetic Study of Nitrate Removal from Aqueous Solutions Using Copper-Coated Iron Nanoparticles. Bull Environ Contam Toxicol. 2017;98(3):359-365.
Vilardi, G., & Di Palma, L. (2017). Kinetic Study of Nitrate Removal from Aqueous Solutions Using Copper-Coated Iron Nanoparticles. Bulletin of Environmental Contamination and Toxicology, 98(3), pp. 359-365. doi:10.1007/s00128-016-1865-9.
Vilardi G, Di Palma L. Kinetic Study of Nitrate Removal From Aqueous Solutions Using Copper-Coated Iron Nanoparticles. Bull Environ Contam Toxicol. 2017;98(3):359-365. PubMed PMID: 27372457.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Kinetic Study of Nitrate Removal from Aqueous Solutions Using Copper-Coated Iron Nanoparticles. AU - Vilardi,Giorgio, AU - Di Palma,Luca, Y1 - 2016/07/02/ PY - 2016/01/14/received PY - 2016/06/23/accepted PY - 2016/7/4/pubmed PY - 2017/5/2/medline PY - 2016/7/4/entrez KW - Chemical reduction KW - Core shell mechanism KW - Groundwater remediation KW - Nitrate KW - nZVI SP - 359 EP - 365 JF - Bulletin of environmental contamination and toxicology JO - Bull Environ Contam Toxicol VL - 98 IS - 3 N2 - Nitrates are considered hazard compounds for human health due to their tendency to be reduced to nitrites, in particular in reducing environment. Nano zero valent iron (nZVI) represents an efficient and low-cost adsorbent/reductive agent for nitrate removal from groundwater and wastewaters and a little addition of a second metal species (Cu, Pd, Ni, Ag) has proven to increase process effectiveness, by enhancing stability and oxidation resistance of nanoparticles. In this work Cu/Fe nanoparticles were loaded in a NO3- solution (100 mg L-1) and the removal efficiency was tested by monitoring nitrate concentration at selected time intervals. Results showed that the nitrate removal process involves both reduction and adsorption processes: the removal mechanism has been investigated, and the pseudo-first-order and pseudo-second-order-adsorption kinetic models were successfully tested. SN - 1432-0800 UR - https://www.unboundmedicine.com/medline/citation/27372457/Kinetic_Study_of_Nitrate_Removal_from_Aqueous_Solutions_Using_Copper_Coated_Iron_Nanoparticles_ L2 - https://dx.doi.org/10.1007/s00128-016-1865-9 DB - PRIME DP - Unbound Medicine ER -