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Entrapment of iron nanoparticles in calcium alginate beads for groundwater remediation applications.
J Hazard Mater. 2009 Jul 30; 166(2-3):1339-43.JH

Abstract

Zero-valent iron nanoparticles (nZVI) have been successfully entrapped in biopolymer, calcium (Ca)-alginate beads. The study has demonstrated the potential use of this technique in environmental remediation using nitrate as a model contaminant. Ca-alginate beads show promise as an entrapment medium for nZVI for possible use in groundwater remediation. Based on scanning electron microscopy images it can be inferred that the alginate gel cluster acts as a bridge that binds the nZVI particles together. Kinetic experiments with 100, 60, and 20mg NO(3)(-)-NL(-1) indicate that 50-73% nitrate-N removal was achieved with entrapped nZVI as compared to 55-73% with bare nZVI over a 2-h period. The controls ran simultaneously show little NO(3)(-)-N removal. Statistical analysis indicates that there was no significant difference between the reaction rates of bare and entrapped nZVI. The authors have shown for the first time that nZVI can be effectively entrapped in Ca-alginate beads and no significant decrease in the reactivity of nZVI toward the model contaminant (nitrate here) was observed after the entrapment.

Authors+Show Affiliations

Civil Engineering Department, North Dakota State University, Dept 2470, P.O. Box 6050, Fargo, ND 58108, USA. a.bezbaruah@ndsu.eduNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Evaluation Study
Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

19178997

Citation

Bezbaruah, Achintya N., et al. "Entrapment of Iron Nanoparticles in Calcium Alginate Beads for Groundwater Remediation Applications." Journal of Hazardous Materials, vol. 166, no. 2-3, 2009, pp. 1339-43.
Bezbaruah AN, Krajangpan S, Chisholm BJ, et al. Entrapment of iron nanoparticles in calcium alginate beads for groundwater remediation applications. J Hazard Mater. 2009;166(2-3):1339-43.
Bezbaruah, A. N., Krajangpan, S., Chisholm, B. J., Khan, E., & Bermudez, J. J. (2009). Entrapment of iron nanoparticles in calcium alginate beads for groundwater remediation applications. Journal of Hazardous Materials, 166(2-3), 1339-43. https://doi.org/10.1016/j.jhazmat.2008.12.054
Bezbaruah AN, et al. Entrapment of Iron Nanoparticles in Calcium Alginate Beads for Groundwater Remediation Applications. J Hazard Mater. 2009 Jul 30;166(2-3):1339-43. PubMed PMID: 19178997.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Entrapment of iron nanoparticles in calcium alginate beads for groundwater remediation applications. AU - Bezbaruah,Achintya N, AU - Krajangpan,Sita, AU - Chisholm,Bret J, AU - Khan,Eakalak, AU - Bermudez,Juan J Elorza, Y1 - 2008/12/14/ PY - 2008/10/29/received PY - 2008/12/09/revised PY - 2008/12/10/accepted PY - 2009/1/31/entrez PY - 2009/1/31/pubmed PY - 2009/8/6/medline SP - 1339 EP - 43 JF - Journal of hazardous materials JO - J. Hazard. Mater. VL - 166 IS - 2-3 N2 - Zero-valent iron nanoparticles (nZVI) have been successfully entrapped in biopolymer, calcium (Ca)-alginate beads. The study has demonstrated the potential use of this technique in environmental remediation using nitrate as a model contaminant. Ca-alginate beads show promise as an entrapment medium for nZVI for possible use in groundwater remediation. Based on scanning electron microscopy images it can be inferred that the alginate gel cluster acts as a bridge that binds the nZVI particles together. Kinetic experiments with 100, 60, and 20mg NO(3)(-)-NL(-1) indicate that 50-73% nitrate-N removal was achieved with entrapped nZVI as compared to 55-73% with bare nZVI over a 2-h period. The controls ran simultaneously show little NO(3)(-)-N removal. Statistical analysis indicates that there was no significant difference between the reaction rates of bare and entrapped nZVI. The authors have shown for the first time that nZVI can be effectively entrapped in Ca-alginate beads and no significant decrease in the reactivity of nZVI toward the model contaminant (nitrate here) was observed after the entrapment. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/19178997/Entrapment_of_iron_nanoparticles_in_calcium_alginate_beads_for_groundwater_remediation_applications_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(08)01902-X DB - PRIME DP - Unbound Medicine ER -