A5042604523- Radioactivity and Radon Measurements
- Radioactive element chemistry and processing
- Chemical Synthesis and Characterization
- Radioactive contamination and transfer
- Nuclear and radioactivity studies
- Geochemistry and Geologic Mapping
- Geochemistry and Elemental Analysis
- Graphite, nuclear technology, radiation studies
- Groundwater flow and contamination studies
- Nuclear materials and radiation effects
- Karst Systems and Hydrogeology
- Hydrocarbon exploration and reservoir analysis
- Concrete and Cement Materials Research
- Thermal and Kinetic Analysis
- Diatoms and Algae Research
- Transboundary Water Resource Management
- Fish Biology and Ecology Studies
- Building materials and conservation
- Geological and Geochemical Analysis
- Cultural Heritage Management and Preservation
- Groundwater and Watershed Analysis
- Catalytic Processes in Materials Science
- Radiation Dose and Imaging
- Geotechnical and construction materials studies
- Heavy metals in environment
Bangladesh Atomic Energy Commission
2013-2025
Daffodil International University
2025
Saitama University
2015-2019
Graduate School USA
2015-2016
Kyoto University
2011
Beach sands harbor appreciable amount of radioactive elements such as zircon which contains some important and (e.g.uranium, thorium).Very limited quantitative information is available in the sand beaches Cox's Bazar Bangladesh.The present study presents application Neutron Activation Analysis (NAA) to quantify uranium thorium elemental concentration assemblages from beach placers Bazar.Zircon was separated a mineral processing pilot plant.The were examined by polarizing petrographic...
Abstract In the reliable safety assessment of radioactive waste disposal, understanding and modeling sorption behavior onto host rock under various groundwater conditions are indispensable. The influence pH, ionic strength, initial concentrations Cs I on tuff pumice isolated from original was investigated. For both rocks, proton concentration has little effect Kd values forCs in pH range 3–10. As strength solution increases presence sodium perchlorate as a matrix ion, value cesium apparently...
Determination of adsorption coefficient strontium (Sr), one the major elements low and intermediate level radioactive wastes, is an important step to assess performance a waste repository. The on rhyolitic type pumice tuff, already selected as potential host rock for repositories in Japan, was investigated with batch experiments. Some parts tuff were oxidized this redox effect compared fresh tuff. distribution yielded negative values ranging from –0.3 –9.6 mL/g at initial concentration 10–6...
In-situ oxidation of solid phase was considered to investigate adsorption behavior under different geochemical parameters like pH, initial concentration and ionic strength. Pumice tuff, a potential host rock for low intermediate radioactive wastes, has been affected by the redox zone. The characterization fresh oxidized tuff performed X-ray diffractometer, scanning electron microscope mercury intrusion porosimetry. In order compare difference distribution coefficient (Kd) in pumice tuffs,...
DOI: http://dx.doi.org/10.3329/jueb.v1i0.14544 Jahangirnagar University Environmental Bulletin, Vol.1, 25-34, 2012
This study presents geochemical characterization, as well as, quantification of rare earth elements in the recent beach deposition at two major islands eastern Bay Bengal-Kutubdia and Moheshkhali. Placer sand samples from near surface depositions were analyzed by heavy mineral separation, mineralogical identification, chemical composition elemental mapping. X-ray diffraction (XRD), fluorescence (XRF), Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM-EDS) used to obtain...
The Ganges-Brahmaputra river system at the Bengal Basin carries large amounts of sediments on way to finally deposit Bay Bengal. Those river-transported form bar deposits during dry season in many areas Bangladesh and accumulate economic mineral depositions suitable geological environments. Dredging is a must for most those rivers proper navigation, as well protecting bank erosion, which generates millions tons waste sand. dredged materials from beds are mostly composed silicate minerals,...
This study presents geochemical characterization, as well as, quantification of rare earth elements in the recent beach deposition at two major islands eastern Bay Bengal-Kutubdia and Moheshkhali. Placer sand samples from near surface depositions were analyzed by heavy mineral separation, mineralogical identification, chemical composition elemental mapping. X-ray diffraction (XRD), fluorescence (XRF), Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM-EDS) used to obtain...
In the reliable safety assessment of radioactive waste disposal, understanding and modeling sorption behavior onto host rock under various groundwater conditions are indispensable. The influence pH, ionic strength, initial concentrations Cs I on tuff pumice isolated from original was investigated. For both rocks, proton concentration has little effect Kd values forCs in pH range 3–10. As strength solution increases presence sodium perchlorate as a matrix ion, value cesium apparently...
This study investigates the landslide susceptibility of Dupi Tila Formation by analyzing geological parameters such as lithology, clay mineralogy, rock weathering, and structural features. The comprises poorly consolidated sandstone shale layers. percentage mudrocks in this formation is about 32- 38%. X-ray diffraction (XRD) analysis identified illite, chlorite, smectite, kaolinite major minerals present formation. qualitative degree weathering outcrops shows a high indicated disintegration...
Redox affected pumice tuff was used to investigate the changes of pore properties due oxidation and its possible consequences adsorption nuclides on it. Porosity size distribution were analyzed by mercury injection technique scanning electron microscopy. Batch experiment carried out with 1 cm3 block shaped intact samples determine coefficient, Kd at several pH, ionic strength initial nuclide concentrations stable cesium (133Cs). Pore area, surface area specific determined from data before...