Redirigiendo al acceso original de articulo en 16 segundos...
Inicio  /  Environments  /  Vol: 5 Núm: 4 Par: April (2018)  /  Artículo
ARTÍCULO
TITULO

Trace Metal Modelling of a Complex River Basin Using the Suite of Models Integrated in the OpenMI Platform

Narayan Kumar Shrestha    
Chrismar Punzal    
Olkeba Tolessa Leta and Willy Bauwens    

Resumen

Modelling trace metal dynamics is essential in an integrated modelling framework as trace metals have the potential to be fatal, even when present at low concentrations. Since the degree of bioavailability of a metal depends on its presence in the dissolved phase, it is necessary to keep track of both the dissolved and particulate phase of metals. In general, the well-known partitioning coefficient approach is widely used for trace metal speciation. As such, we applied a parametric approach to relate the partitioning coefficient to several environmental variables. These environmental variables are made available by a suite of physically based models (a hydrologic and diffuse pollution model, Soil and Water Assessment Tool (SWAT); a hydraulic model, Storm Water Management Model (SWMM); a stream temperature model; an in-stream water quality conversion model; and a sediment transport model) integrated using the Open Modelling Interface (OpenMI). For trace metal speciation, two regression techniques, (a) the multi-linear regression (MLR) and (b) the principle component regression (PCR), were used. It is then tested in the Zenne river basin, Belgium, to simulate four trace metals (copper, cadmium, zinc and lead) dynamics. We demonstrated the usefulness of the OpenMI platform to link different model components for integrated trace metal transport modelling of a complex river basin. It was found that the integrated model simulated different metals with ?satisfactory? accuracy. The MLR- and PCR-based model results were also comparable. From a management perspective, the river is not heavily polluted except for the level of dissolved zinc. We believe that the availability of such a model will allow for a better understanding of trace metal dynamics, which could be utilized to improve the present condition of the river.

Palabras claves

 Artículos similares

       
 
Deonie Allen, Heather Haynes, Scott Arthur     Pág. 1 - 19
Adsorption is a key water pollution remediation measure used to achieve stormwater quality improvement in Sustainable urban Drainage Systems (SuDS). The level of contamination of detained sediment within SuDS assets is not well documented, with published... ver más
Revista: Water

 
Yury M. Polishchuk, Alexander N. Bogdanov, Vladimir Yu. Polishchuk, Rinat M. Manasypov, Liudmila S. Shirokova, Sergey N. Kirpotin, Oleg S. Pokrovsky     Pág. 1 - 18
Despite the importance of thermokarst (thaw) lakes of the subarctic zone in regulating greenhouse gas exchange with the atmosphere and the flux of metal pollutants and micro-nutrients to the ocean, the inventory of lake distribution and stock of solutes ... ver más
Revista: Water

 
Marziali Laura, Gianni Tartari, Franco Salerno, Lucia Valsecchi, Clara Bravi, Erika Lorenzi, Pietro Genoni, Licia Guzzella     Pág. 1 - 18
Reservoirs are characterized by accumulation of sediments where micropollutants may concentrate, with potential toxic effects on downstream river ecosystems. However, sediment management such as flushing is needed to maintain storage capacity. Climate ch... ver más
Revista: Water

 
Mirella Elkadi, Avin Pillay, Sai Cheong Fok, Fadi Feghali, Ghada Bassioni and Sasi Stephen    
This paper explores the potential of concrete material to accumulate toxic trace elements using ablative laser technology (ICP-MS). Concrete existing in offshore structures submerged in seawater acts as a sink for hazardous metals, which could be gradual... ver más
Revista: Sustainability

 
Thomas Bissig,Daisy Donoso,Nelson C. Guerra,Gregory M. Dipple     Pág. 291 - 304
Carbonate minerals are common gangue minerals in the low sulfidation epithermal Au-Ag District of El Peñón, II Región, Chile. They can be subdivided into two principal groups on the basis of the paragenetic relationships. Paragenetically early carbonates... ver más
Revista: Andean Geology