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A new multibranch Integrated Catchment (INCA) model INCA-Metals has been developed to simulate the impact of tannery discharges on river systems. The model accounts for the key chemical reaction kinetic processes operating as well as sedimentation, resuspension, dilution, mixing and redistribution of pollutants in rivers downstream of tannery discharge points and for mine discharges or acid rock drainage sites. The model is dynamic and simulates the daily behaviour of hydrology and eight metals, including cadmium, mercury, copper, zinc, lead, arsenic, manganese and chromium, as well as cyanide and ammonia. The model is semi-distributed and can simulate catchments, tributaries and instream river behaviour. The model can also account for diffuse pollution from rural runoff as well as point sources from effluent and trade discharges. The model has been applied to the new Savar tannery complex on the Dhaleshwari River system in Bangladesh to assess the impacts on pollution levels in the river system and to evaluate a set of treatment scenarios for pollution control, particularly in the dry season. It is shown that the new effluent treatment plant at Savar needs to significantly improve its operation and treatment capability in order to alleviate metal pollution in the downstream Dhaleshwari River System and also protect the Meghna River System that falls in the Bay of Bengal.
Paul Whitehead; Zineb Mimouni; Daniel Butterfield; Gianbattista Bussi; Mohammed Hossain; Rebecca Peters; Shammi Shawal; Phillip Holdship; Cordelia Rampley; Li Jin; Duane Ager. A New Multibranch Model for Metals in River Systems: Impacts and Control of Tannery Wastes in Bangladesh. Sustainability 2021, 13, 3556 .
AMA StylePaul Whitehead, Zineb Mimouni, Daniel Butterfield, Gianbattista Bussi, Mohammed Hossain, Rebecca Peters, Shammi Shawal, Phillip Holdship, Cordelia Rampley, Li Jin, Duane Ager. A New Multibranch Model for Metals in River Systems: Impacts and Control of Tannery Wastes in Bangladesh. Sustainability. 2021; 13 (6):3556.
Chicago/Turabian StylePaul Whitehead; Zineb Mimouni; Daniel Butterfield; Gianbattista Bussi; Mohammed Hossain; Rebecca Peters; Shammi Shawal; Phillip Holdship; Cordelia Rampley; Li Jin; Duane Ager. 2021. "A New Multibranch Model for Metals in River Systems: Impacts and Control of Tannery Wastes in Bangladesh." Sustainability 13, no. 6: 3556.
The impact of cyclone track features (e.g., cyclone translation speed, cyclone path and cyclone landfall crossing angle) in combination with tidal phase shift upon surge characteristics have been investigated at the Bay of Bengal along the Bangladesh coast. A two-dimensional hydrodynamic model in a horizontal direction (2DH) coupled with a storm-surge model has been employed for the study. Numerical experiments with three different cyclone translation speeds show that when the surge height is directly forced by the cyclonic wind speed especially within the RWM (Radius of Maximum Wind), faster translation speed produces reduced surge height as the cyclone gets less time to force the water. On the other hand, at locations outside the RMW, surge waves travel as a propagating long wave where higher surges are produced by faster moving cyclones. It is found that surge arrival times are more and more affected by tidal phase when cyclone translation speed is reduced. Analysis of seven hypothetical parallel cyclone paths show that local bathymetry and complex coastline configurations strongly influence the surge height and surge arrival time along the Bangladesh coast. From the analyses of cyclone landfall crossing angles at the Khulna and Chittagong coasts, it is observed that surge durations are the smallest at both the coasts when the coastline crossing angles are the smallest.
Mohammad Asad Hussain; Yoshimitsu Tajima; Mohammed Abed Hossain; Partho Das. Impact of Cyclone Track Features and Tidal Phase Shift upon Surge Characteristics in the Bay of Bengal along the Bangladesh Coast. Journal of Marine Science and Engineering 2017, 5, 52 .
AMA StyleMohammad Asad Hussain, Yoshimitsu Tajima, Mohammed Abed Hossain, Partho Das. Impact of Cyclone Track Features and Tidal Phase Shift upon Surge Characteristics in the Bay of Bengal along the Bangladesh Coast. Journal of Marine Science and Engineering. 2017; 5 (4):52.
Chicago/Turabian StyleMohammad Asad Hussain; Yoshimitsu Tajima; Mohammed Abed Hossain; Partho Das. 2017. "Impact of Cyclone Track Features and Tidal Phase Shift upon Surge Characteristics in the Bay of Bengal along the Bangladesh Coast." Journal of Marine Science and Engineering 5, no. 4: 52.
Accumulation of heavy metals at elevated concentration and potential of considerable amount of the accumulated heavy metals to reach the soil system was observed from earlier studies in soakaways sediments within an infiltration facility in Tokyo, Japan. In order to understand the competitive adsorption behaviour of heavy metals Zn, Ni and Cu in soil, competitive batch adsorption experiments were carried out using single metal and binary metal combinations on soil samples representative of underlying soil and surface soil at the site. Speciation analysis of the adsorbed metals was carried out through BCR sequential extraction method. Among the metals, Cu was not affected by competition while Zn and Ni were affected by competition of coexisting metals. The parameters of fitted ‘Freundlich’ and ‘Langmuir’ isotherms indicated more intense competition in underlying soil compared to surface soil for adsorption of Zn and Ni. The speciation of adsorbed metals revealed less selectivity of Zn and Ni to soil organic matter, while dominance of organic bound fraction was observed for Cu, especially in organic rich surface soil. Compared to underlying soil, the surface soil is expected to provide greater adsorption to heavy metals as well as provide greater stability to adsorbed metals, especially for Cu.
M. A. Hossain; H. Furumai; F. Nakajima. Competitive adsorption of heavy metals in soil underlying an infiltration facility installed in an urban area. Water Science and Technology 2009, 59, 303 -310.
AMA StyleM. A. Hossain, H. Furumai, F. Nakajima. Competitive adsorption of heavy metals in soil underlying an infiltration facility installed in an urban area. Water Science and Technology. 2009; 59 (2):303-310.
Chicago/Turabian StyleM. A. Hossain; H. Furumai; F. Nakajima. 2009. "Competitive adsorption of heavy metals in soil underlying an infiltration facility installed in an urban area." Water Science and Technology 59, no. 2: 303-310.