Vinka Oyanedel‐Craver

University of Rhode Island

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

James A. Smith

University of Virginia

L. A. Schifman

Massachusetts Department of Environmental Protection

Varun Kasaraneni

Gannon University

Thomas B. Boving

University of Rhode Island

Zachary Shepard

University of Rhode Island

Nelson M. Anaya

Wilkes University

J.M. Garrido

Universidade de Santiago de Compostela

R. Méndez

Universidade de Santiago de Compostela

Geoffrey D. Bothun

University of Rhode Island

Kayla Kurtz

University of Rhode Island

Cooperative Institutions

University of Rhode Island

University of Virginia

University of Colorado Boulder

University of Parma

University of Colorado System

University of California, Santa Barbara

Harvard University

Connecticut Agricultural Experiment Station

The University of Texas at El Paso

Portland State University

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

A Critical Review of Extraction and Identification Methods of Microplastics in Wastewater and Drinking Water

Environmental Science & Technology (2020)

Dounia Elkhatib Vinka Oyanedel‐Craver

This critical review analyzes methodologies used to collect, quantify, and characterize microplastics in both wastewater and drinking water. Researchers used different techniques at all stages, from collection to characterization, for quantifying microplastics in urban water systems. This represents a barrier to comprehensively assess the current loads of microplastic and to compare the results obtained by such assessments. The compiled studies address microplastic contamination using four types of sample collection techniques, four methods for processing samples, and four techniques for characterizing microplastics. This results in significant discrepancies in each of the following: (1) reported concentrations in both wastewater effluents and drinking water, (2) microplastic characteristics (i.e., size, color, shape, and composition), and (3) quality control and assurance procedures. Finally, this review qualitatively evaluated the reports by the completeness of their data based on a ranking system using five criteria: sample collection, sample processing, quality control, identification technique, and results. The results of this ranking system clarify disparities between the studies.

Identification

10.1021/acs.est.9b06672

Cite

Citations (179)

Comparison of the bacterial removal performance of silver nanoparticles and a polymer based quaternary amine functiaonalized silsesquioxane coated point-of-use ceramic water filters

Journal of Hazardous Materials (2013)

Hongyin Zhang Vinka Oyanedel‐Craver

Silsesquioxane

Silver nanoparticle

10.1016/j.jhazmat.2013.05.025

Cite

Citations (69)

Functionalization of silver nanoparticles on membranes and its influence on biofouling

Conor Sprick Sneha Chede Isabel C. Escobar Vinka Oyanedel‐Craver Tequila A. L. Harris

Biofouling

Surface Modification

Silver nanoparticle

10.13023/etd.2017.331

Cite

Citations (0)

Simultaneous sorption of benzene and heavy metals onto two organoclays

Journal of Colloid and Interface Science (2006)

Vinka Oyanedel‐Craver Megan Fuller James A. Smith

Bentonite

10.1016/j.jcis.2006.10.001

Cite

Citations (68)

Comparison of Three Household Water Treatment Technologies in San Mateo Ixtatán, Guatemala

Journal of Environmental Engineering (2014)

Jonathan Mellor Erin Kallman Vinka Oyanedel‐Craver James A. Smith

Silver-impregnated ceramic water filters (CWFs) are a simple and sustainable low-cost technology that has shown promise in improving household drinking water quality and reducing incidences of early childhood diarrhea in a variety of settings. Despite this promise, lower reservoir contamination is thought to be a contributing factor to the decline in the effectiveness being seen over time. A novel silver-impregnated ceramic torus that can be placed in the lower reservoir was designed to minimize this contamination. This study uses a one-year randomized trial to compare the relative effectiveness of the CWF+torus design with a standard CWF and point-of-use chlorination. The effectiveness of each technology was measured at project inception and subsequently after six and 12 months. Results indicate that the toruses, as designed, are not able to consistently maintain lower-reservoir silver concentrations above those of the simple CWF design and are hence unable to prevent contamination. Furthermore, after six months, only 65% of households that used point-of-use chlorination maintained sufficient chlorine levels above the 0.2 mg/L needed to be effective. All three technologies showed statistically equivalent log removal efficiencies for total coliform bacteria and all three declined in effectiveness over the first six months. Combined average log removal efficiencies for all three technologies ranged from 2.22±0.21 initially but declined to 1.45±0.35 after six months and to 1.42±0.29 after one year.

10.1061/(asce)ee.1943-7870.0000914

Cite

Citations (16)

Synergistic effects of engineered nanoparticles and organics released from laser printers using nano-enabled toners: potential health implications from exposures to the emitted organic aerosol

Environmental Science Nano (2017)

Marie‐Cécile G. Chalbot Sandra V. Pirela L. A. Schifman Varun Kasaraneni Vinka Oyanedel‐Craver

Recent studies have shown that engineered nanoparticles (ENPs) are incorporated into toner powder used in printing equipment and released during their use. Thus, understanding the functional and structural composition and potential synergistic effects of this complex aerosol and released gaseous co-pollutants is critical in assessing their potential toxicological implications and risks. In this study, toner powder and PEPs were thoroughly examined for functional and molecular composition of the organic fraction and the concentration profile of 16 Environmental Protection Agency (EPA)-priority polycyclic aromatic hydrocarbons (PAH) using state of the art analytical methods. Results show significant differences in abundance of non-exchangeable organic hydrogen of toner powder and PEPs, with a stronger aromatic spectral signature in PEPs. Changes in structural composition of PEPs are indicative of radical additions and free-radical polymerization favored by catalytic reactions, resulting in formation of functionalized organic species. Particularly, accumulation of aromatic carbons with strong styrene-like molecular signatures on PEPs is associated with formation of semivolatile heavier aromatic species (i.e., PAHs). Further, the transformation of low molecular weight PAHs in the toner powder to high molecular weight PAHs in PEPs was documented and quantified. This may be a result of synergistic effects from catalytic metal/metal oxide ENPs incorporated into the toner and the presence/release of semi-volatile organic species (SVOCs). The presence of known carcinogenic PAHs on PEPs raises public health concerns and warrants further toxicological assessment.

10.1039/c7en00573c

Cite

Citations (29)

WTP for water filters and water quality testing services in Guatemala

Water Resources and Economics (2019)

Todd Guilfoos Sarah Hayden Emi Uchida Vinka Oyanedel‐Craver

10.1016/j.wre.2019.01.005

Cite

Citations (15)

Kinetic, metabolic and macromolecular response of bacteria to chronic nanoparticle exposure in continuous culture

Environmental Science Nano (2018)

Fatemeh Faghihzadeh Nelson M. Anaya Carolina Astudillo‐Castro Vinka Oyanedel‐Craver

Effect of specific growth rates on metabolic and macromolecular response of bacteria to chronic antimicrobial nanoparticle exposure are studied.

10.1039/c8en00325d

Cite

Citations (31)

Correction to “Enhancement of Surface Runoff Quality Using Modified Sorbents”

ACS Sustainable Chemistry & Engineering (2014)

Varun Kasaraneni L. A. Schifman Thomas B. Boving Vinka Oyanedel‐Craver

ADVERTISEMENT RETURN TO ISSUEPREVCorrectionORIGINAL ARTICLEThis notice is a correctionCorrection to "Enhancement of Surface Runoff Quality Using Modified Sorbents"Varun K. Kasaraneni*, Laura A. Schifman, Thomas B. Boving, and Vinka Oyanedel-CraverCite this: ACS Sustainable Chem. Eng. 2014, 2, 12, 2873–2874Publication Date (Web):November 7, 2014Publication History Received7 August 2014Published online7 November 2014Published inissue 1 December 2014https://pubs.acs.org/doi/10.1021/sc5005082https://doi.org/10.1021/sc5005082correctionACS PublicationsCopyright © 2014 American Chemical Society. This publication is available under these Terms of Use. Request reuse permissions This publication is free to access through this site. Learn MoreArticle Views504Altmetric-Citations1LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail PDF (800 KB) Get e-AlertscloseSupporting Info (1)»Supporting Information Supporting Information SUBJECTS:Materials,Metal nanoparticles,Shale,Sorbents Get e-Alerts

10.1021/sc5005082

Cite

Citations (1)

Toxicity of dysprosium nano particles with glucose and sodium chloride on E. Coli

AGUFM (2013)

Nelson M. Anaya F. Solomon Vinka Oyanedel‐Craver

Dysprosium

Source

Cite

Citations (0)