Effects of climate change on the wash-off of volatile organic compounds from urban roads

Mahbub, Parvez; Goonetilleke, Ashantha; Egodawatta, Prasanna

doi:10.1016/j.scitotenv.2011.06.032

Cited by 17 publications

(5 citation statements)

References 19 publications

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“…To determine which rainfall characteristics influence the most the wash-off process, the simulation results were analysed using a principal component analysis (PCA), which is a multivariate technique serving to analyse interrelationships among a large number of variables (Hair et al, 2010). In the water quality research, PCA has been used as a pattern recognition technique (Settle et al, 2007;Miguntanna et al, 2010;Mahbub et al, 2011). One outcome of a PCA is a loading plot, in which different variables (i.e.…”

Section: Discussionmentioning

confidence: 99%

“…In another study with a rainfall simulator, the effects of climate change on the wash-off of volatile organic compounds were examined. It was concluded that low, low-to-moderate and high rainfall intensity events, resulting from climate change, will affect the wash-off process of volatile organic compounds (Mahbub et al, 2011). The preceding studies provide valuable insights into the potential stormwater quality changes, but with a limited explanation of changes in the build-up/wash-off processes and their dependencies on climatic characteristics.…”

Section: Introductionmentioning

confidence: 99%

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Modelling the effects of changes in rainfall event characteristics on TSS loads in urban runoff

Borris

Viklander

Gustafsson

et al. 2013

Hydrological Processes

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The effect of changes in rainfall event characteristics on urban stormwater quality, which was described by total suspended solids (TSS), was studied by means of computer simulations conducted with the Storm Water Management Model for a climate change scenario for northern Sweden. The simulation results showed that TSS event loads depended mainly on rainfall depth and intensity, but not on antecedent conditions. Storms with low‐to‐intermediate depths and intensities showed the highest sensitivity to changes in rainfall input, both for percentage and absolute changes in TSS wash‐off loads, which was explained by the contribution of pervious areas and supply limitations. This has significant implications for stormwater management, because those relatively frequent events generally carry a high percentage of the annual pollutant load. Copyright © 2013 John Wiley & Sons, Ltd.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modelling the effects of changes in rainfall event characteristics on TSS loads in urban runoff

Borris

Viklander

Gustafsson

et al. 2013

Hydrological Processes

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“…VOCs from bituminous materials and its release mechanism related to the molecular movement at elevated temperature [12][13][14][15]. However, less effective methods have been found to reduce the VOCs emission.…”

Section: Many Researchers Have Been Performing Studies To Characterizmentioning

confidence: 99%

Effect of organo-montmorillonite nanoclay on VOCs inhibition of bitumen

Liu

et al. 2017

Construction and Building Materials

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The volatile organic compounds (VOCs) emission from bituminous materials can lead to serious environmental and health issues during their applications. In this study, organo-montmorillonite nanoclays were used to modify the base bitumen, and their effect on inhibiting the VOCs emission of bitumen was evaluated by pyrolysis gas chromatograph interfaced with mass spectrometer (Py-GC/MS). Laboratory ageing study was designed and tested to evaluate the effects of the nanoclay on the ageing resistance of base binder. The results indicated that the nanoclay can effectively inhibit the VOCs emission of bitumen. The reason can be that the light components of bitumen were intercalated into the interlayer space of nanoclay which limited their emission. The organic surfactant on the surface of the nanoclay played an important role to determine the compatibility between the nanoclay and the bitumen, and it finally determined this inhibition effect. The ageing resistance of modified bitumen improved not only due to the block effect of nanoclay to the oxygen invasion, but also due to its inhibition to VOCs emission at high production temperatures. Therefore, the organo-montmorillonite can function as an inhibitor of VOCs emission and at the same time improve the ageing resistance.

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“…Two watersheds in Northern California were monitored during multiple storms between 2007 and 2014, providing records of stormwater runoff quality (bifenthrin, cyfluthrin, cypermethrin, and sediment Event Mean Concentration (EMC)), runoff quantity (flow rate) and rainfall. These data were analyzed with a multivariate statistical method to correlate pesticide accumulation and runoff with different rainfall characteristics and sediment build-up and wash-off processes [ 15 , 16 ]. The use of this type of analysis helps to overcome significant limitations that may be created by looking at each variable independently without having a holistic view and an in-depth understanding of the entire system.…”

Section: Introductionmentioning

confidence: 99%

Role of Sediments in Insecticide Runoff from Urban Surfaces: Analysis and Modeling

Gorgoglione

Bombardelli

Pitton

et al. 2018

IJERPH

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Insecticides, such as pyrethroids, have frequently been detected in runoff from urban areas, and their offsite transport can cause aquatic toxicity in urban streams and estuaries. To better understand the wash-off process of pesticide residues in urban runoff, the association of pyrethroids with sediment in runoff from residential surfaces was investigated in two watersheds located in Northern California (Sacramento County). Rainfall, flow rate, and event mean concentrations/loads of sediments and pyrethroids, collected during seasonal monitoring campaigns from 2007 to 2014, were analyzed to identify relationships among stormwater quality and rainfall characteristics, primarily using Principal Component Analysis (PCA). Pyrethroid wash-off was strongly related to sediment wash-off whenever sediment loads exceeded 10 mg; this value was conveniently selected as a threshold between dissolved and particle-bound control of off-site pyrethroid transport. A new mechanistic model for predicting pyrethroid wash-off profiles from residential surfaces at basin-scale was implemented in the Storm Water Management Model (SWMM). The accuracy of the model predictions was estimated by evaluating the root mean square error (RMSE), Nash–Sutcliff efficiency (NSE), and Kling–Gupta efficiency (KGE) for each pyrethroid detected (RMSEtot = 0.13; NSEtot = 0.28; KGEtot = 0.56). The importance of particle-bound transport revealed in this work confirms previous field investigations at a smaller scale, and it should be a key consideration when developing policies to mitigate pesticide runoff from urban areas.

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Effects of climate change on the wash-off of volatile organic compounds from urban roads

Cited by 17 publications

References 19 publications

Modelling the effects of changes in rainfall event characteristics on TSS loads in urban runoff

Modelling the effects of changes in rainfall event characteristics on TSS loads in urban runoff

Effect of organo-montmorillonite nanoclay on VOCs inhibition of bitumen

Role of Sediments in Insecticide Runoff from Urban Surfaces: Analysis and Modeling

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