By a News Reporter-Staff News Editor at Journal of Engineering -- Investigators publish new report on Engineering. According to news reporting from Kingston, Rhode Island, by VerticalNews journalists, research stated, "The objective of this study was to develop and test nanoparticle- and polymer-based bioactive amended sorbents to enhance stormwater runoff treatment in best management practices (BMPs). Red cedar wood and expanded shale were the sorbents tested."
The news correspondents obtained a quote from the research from the University of Rhode Island, "Red cedar wood chips (RC) were modified with 3-(trihydroxysilyl) propyldimethyloctadecyl ammonium chloride (TPA) and silver nanoparticles (AgNPs) at different mass loadings (0.36 mg/g, 0.67 mg/g, and 0.93 mg/g for TPA and 0.33 mg/g and 0.68 mg/g for AgNPs) to simultaneously improve the sorption of organic and inorganic contaminants and pathogenic deactivation in BMPs treating stormwater runoff. Unmodified expanded shale is often used as a filter material for stormwater treatment and was used as a base comparison. The results showed that TPA and AgNPs loading onto red cedar increased the Langmuir maximum sorption coefficient (Q) for polycyclic aromatic hydrocarbons, up to 35 fold and 29 fold, respectively, compared to unmodified red cedar. In the case of heavy metals, Q for lead increased with increased loading of TPA and AgNPs, whereas no significant change in the Q value for cadmium was observed, while zinc and nickel sorption slightly decreased. The Langmuir maximum sorption coefficient of copper was higher for modified red cedar; however, no correlation was observed with TPA or AgNP loadings. The log reduction value (LRV) for Escherichia coil using unmodified red cedar was
According to the news reporters, the research concluded: "The findings from this study show that if BMPs were to incorporate the modified red cedar, stormwater treatment of PAR and E. coil could be enhanced, and the quality of the treated water will improve."
For more information on this research see: Enhancement of Surface Runoff Quality Using Modified Sorbents. ACS Sustainable Chemistry & Engineering, 2014;2(7):1609-1615. ACS Sustainable Chemistry & Engineering can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA.
Our news journalists report that additional information may be obtained by contacting V.K. Kasaraneni, University of Rhode Island, Dept. of Geosci, Kingston, RI 02881, United States. Additional authors for this research include L.A. Schifman, T.B. Boving and V. Oyanedel-Craver.
Keywords for this news article include: Kingston, Engineering, Rhode Island, United States, North and Central America
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