The links between water profile, net deposition and erosion in the design and performance of stiff grass hedges

Akram, Sina; Yu, Bofu; Ghadiri, Hossein; Hussein, Janet

doi:10.1016/j.jhydrol.2014.01.001

Cited by 17 publications

(18 citation statements)

References 40 publications

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“…Moreover, the frictional slope is very low in this section compared with that in its upstream and downstream sections. Low frictional slope results in low stream power and consequently high net deposition (Akram et al, 2014). As the actual velocity and frictional slope are higher in the grass strip compared with the backwater region, settling due to higher resistance is lower.…”

Section: Model Structurementioning

confidence: 99%

“…Grass strips have been extensively tested and used to alleviate delivery of sediment and associated pollutants to rivers (Dabney et al, 1993;Parsons et al, 1994;Raffaelle et al, 1997;Hook, 2003;Abu-Zreig et al, 2004;Rey, 2004). The two processes of increased roughness and infiltration enhance trapping of sediment particles upstream and within grass strips (Schmitt et al, 1999;Le Bissonnais et al, 2004;Shrestha et al, 2005;Deletic and Fletcher, 2006;Akram et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Modelling flow and sediment trapping upstream and within grass buffer strips

Akram

Ghadiri

2015

Hydrol. Process.

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Grass buffer strips impact the hydrology of flow and consequently the fate of sediment. A complex process‐based model is developed to predict flow characteristics as well as sediment deposition and transport upstream, and within grass strips. The model is capable of estimating the proportion and amount of different sediment particle size classes in the outflow. The modified Green–Ampt equation was used to simulate infiltration. Gradually varied flow and kinematic wave approximation were used to model flow characteristics upstream and within grass strips. The GUEST model approach has been modified in order to use its basic approaches in sediment transport module in grass strips. Model predictions agree well with the results of two sets of controlled experiments. The bias, coefficient of model efficiency and the root mean squared error of the modelled efficiency of grass strips in reducing sediment concentration were 0.93–0.99, 0.58–0.99 and 8.9–12.7, respectively. The sensitivity analysis showed that the initial soil moisture and flow rate are the most sensitive parameters in predicting runoff loss. Increasing the slope steepness and flow rate dramatically decreases the efficiency of grass strips in reducing sediment concentration and mass. Copyright © 2015 John Wiley & Sons, Ltd.

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Section: Model Structurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modelling flow and sediment trapping upstream and within grass buffer strips

Akram

Ghadiri

2015

Hydrol. Process.

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“…Vegetated grass buffer strips can alleviate the delivery of sediment and associated pollutants to surface water systems by increasing hydraulic roughness and enhancing infiltration (Dabney et al, 1993;Parsons et al, 1994;Raffaelle et al, 1997;Schmitt et al, 1999;Hook, 2003;Abu-Zreig et al, 2004;Rey, 2004;Le Bissonnais et al, 2004;Shrestha et al, 2005;Deletic and Fletcher, 2006;Akram et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Application of GUSED‐VBS 2 Model for Flow and Sediment Transport in Vegetated Strips to Improve Water Quality

Akram

2017

Irrigation and Drainage

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Vegetated buffer strips change flow hydrology and sediment transport by increasing resistance to the flow and intensifying infiltration. GUSED‐VBS 2 is a process‐based mathematical model developed to simulate flow characteristics and the fate and transport of sediment in the backwater region upstream of vegetated strips and within them. The model also predicts the concentration and delivery of different particle sizes leaving the vegetated strips and reaching open water bodies. GUSED‐VBS 2 assumes that entrainment and deposition processes occur simultaneously and uses the Green–Ampt approach to simulate infiltration and gradually varied flow and kinematic wave approximation to simulate the water profile in the backwater region and within the vegetated strip respectively. The modified GUEST model approach was used to model the fate and transport of sediment in vegetated strips. Field data were used to evaluate the model predictions of the efficiency of vegetated strips in reducing runoff, sediment concentration and sediment delivery, and the results showed that GUSED‐VBS 2 performed much better in controlled conditions compared to field conditions. The performance of the GUSED‐VBS 2 and WEPP models in simulating particle size distribution in the outflow was compared with different model evaluation criteria and GUSED‐VBS 2 showed better performance compared to WEPP. Copyright © 2017 John Wiley & Sons, Ltd.

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“…Modelling has been widely used in data analysis . To better understand the adsorption processes, the Langmuir, Freundlich, Dubinin‐Redushckevich (D‐R), Temkin, and Linear adsorption isotherm models were used to analyze the obtained data (Supplementary Material) .…”

Section: Resultsmentioning

confidence: 99%

Transport of reactive X‐3B dye at the interface between cationic surfactant‐modified water‐quenched blast furnace slag and aqueous solution

Wang

Huang

et al. 2018

Can J Chem Eng

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There is an emerging interest in the utilization of low‐cost industrial wastes in sustainable pollution control. This study investigated the use of water‐quenched blast furnace slag modified by cetyltrimethyl ammonium bromide as a low‐cost adsorbent for the removal of reactive brilliant red X‐3B from an aqueous solution. The results showed that the removal efficiency increased with an increasing slag dosage and an appropriate dosage for adsorption was 8 g/L. The adsorption efficiency of X‐3B onto modified slag decreased when the pH increased from 2 to 12. The amount of dye uptake per unit of modified slag also increased with an increase in ionic strength, contact time, temperature, and initial dye concentration. The Freundlich isotherm model showed a good fit to the equilibrium adsorption data. Thermodynamic studies suggested the spontaneous and endothermic nature of the adsorption process. The adsorption kinetics followed the pseudo‐second‐order model and the rate constant increased with increasing temperature. These results can help understand the migration patterns of dye molecules at a modified slag‐water interface. It also has important implications for developing wastewater treatment techniques using low‐cost adsorbents.

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The links between water profile, net deposition and erosion in the design and performance of stiff grass hedges

Cited by 17 publications

References 40 publications

Modelling flow and sediment trapping upstream and within grass buffer strips

Modelling flow and sediment trapping upstream and within grass buffer strips

Application of GUSED‐VBS 2 Model for Flow and Sediment Transport in Vegetated Strips to Improve Water Quality

Transport of reactive X‐3B dye at the interface between cationic surfactant‐modified water‐quenched blast furnace slag and aqueous solution

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