DC Field | Value | Language |
---|---|---|
dc.contributor.author | Mishra, Himanshu | ko |
dc.contributor.author | Yu, Changjun | ko |
dc.contributor.author | Chen, Dennis P. | ko |
dc.contributor.author | Goddard, William A., III | ko |
dc.contributor.author | Dalleska, Nathan F. | ko |
dc.contributor.author | Hoffmann, Michael R. | ko |
dc.contributor.author | Diallo, Mamadou S. | ko |
dc.date.accessioned | 2013-03-12T17:53:16Z | - |
dc.date.available | 2013-03-12T17:53:16Z | - |
dc.date.created | 2012-10-11 | - |
dc.date.created | 2012-10-11 | - |
dc.date.issued | 2012-08 | - |
dc.identifier.citation | ENVIRONMENTAL SCIENCE & TECHNOLOGY, v.46, no.16, pp.8998 - 9004 | - |
dc.identifier.issn | 0013-936X | - |
dc.identifier.uri | http://hdl.handle.net/10203/103071 | - |
dc.description.abstract | Extraction of boron from aqueous solutions using selective resins is important in a variety of applications including desalination, ultrapure water production, and nuclear power generation. Today's commercial boron-selective resins are exclusively prepared by functionalization of styrene-divinylbenzene (STY-DVB) beads with N-methylglucamine to produce resins with boron-chelating groups. However, such boron-selective resins have a limited binding capacity with a maximum free base content of 0.7 eq/L, which corresponds to a sorption capacity of 1.16 +/- 0.03 mMol/g in aqueous solutions with equilibrium boron concentration of similar to 70 mM. In this article, we describe the synthesis and characterization of a new resin that can selectively extract boron from aqueous solutions. We show that branched polyethylenimine (PEI) beads obtained from an inverse suspension process can be reacted with glucono-1,5-D-lactone to afford a resin consisting of spherical beads with high density of boron-chelating groups. This resin has a sorption capacity of 1.93 +/- 0.04 mMol/g in aqueous solution with equilibrium boron concentration of similar to 70 mM, which is 66% percent larger than that of standard commercial STY-DVB resins. Our new boron-selective resin also shows excellent regeneration efficiency using a standard acid wash with a 1.0 M HCl solution followed by neutralization with a 0.1 M NaOH solution. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | BORIC-ACID | - |
dc.subject | REMOVAL | - |
dc.subject | EXTRACTION | - |
dc.title | Branched Polymeric Media: Boron-Chelating Resins from Hyperbranched Polyethylenimine | - |
dc.type | Article | - |
dc.identifier.wosid | 000307697700057 | - |
dc.identifier.scopusid | 2-s2.0-84865489900 | - |
dc.type.rims | ART | - |
dc.citation.volume | 46 | - |
dc.citation.issue | 16 | - |
dc.citation.beginningpage | 8998 | - |
dc.citation.endingpage | 9004 | - |
dc.citation.publicationname | ENVIRONMENTAL SCIENCE & TECHNOLOGY | - |
dc.identifier.doi | 10.1021/es301518x | - |
dc.contributor.localauthor | Diallo, Mamadou S. | - |
dc.contributor.nonIdAuthor | Mishra, Himanshu | - |
dc.contributor.nonIdAuthor | Yu, Changjun | - |
dc.contributor.nonIdAuthor | Dalleska, Nathan F. | - |
dc.contributor.nonIdAuthor | Hoffmann, Michael R. | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | BORIC-ACID | - |
dc.subject.keywordPlus | REMOVAL | - |
dc.subject.keywordPlus | EXTRACTION | - |
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