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| 1 | Extraction and characterization of alumina nanopowders from aluminum dross by acid dissolution process显示文摘A significant amount of aluminum dross is available as a waste in foundry industries in Bangladesh. In this study, alumina was extracted from aluminum dross collected from two foundry industries situated in Dhamrai and Manikgang, near the capital city, Dhaka. Aluminum dross samples were found to approximately contain 75wt% Al2O3 and 12wt% SiO2. An acid dissolution process was used to recover the alumina value from the dross. The effects of various parameters, e.g., temperature, acid concentration, and leaching time, on the extraction of alumina were studied to optimize the dissolution process. First, Al(OH)3 was produced in the form of a gel. Calcination of the Al(OH)3 gel at 1000°C, 1200°C, and 1400°C for 2 h produced θ-Al2O3,(α+θ)-Al2O3, and α-alumina powder, respectively. Thermal characterization of the Al(OH)3 gel was performed by thermogravimetric/differential thermal analysis(TG/DTA) and differential scanning calorimetry(DSC). The phases and crystallite size of the alumina were determined by X-ray diffraction analysis. The dimensions of the alumina were found to be on the nano level. The chemical compositions of the aluminum dross and alumina were determined by X-ray fluorescence(XRF) spectroscopy. The microstructure and morphology of the alumina were studied with scanning electron microscopy. The purity of the alumina extracted in this study was found to be 99.0%. Thus, it is expected that the obtained alumina powders can be potentially utilized as biomaterials. | Saifur Rahman Sarker Zahangir Alam Rakibul Qadir M A Gafur Mohammad Moniruzzaman | 2015 | International Journal of Minerals,Metallurgy and Materials2015，22，4： | 20 |
| 2 | Geochemical characteristics of Holocene sediments from Chuadanga district, Bangladesh: Implications for weathering, climate, redox conditions, provenance and tectonic setting显示文摘The present research deals with the geochemical characteristics of the Holocene sediments from Alamdanga area, Chuadanga district, Bangladesh. Main goals of the study are to delineate source rock characteristics, degree of chemical weathering and sorting processes and behavior of redox conditions during deposition of the sediments. Geochemical characteristics of the sediments show comparatively a wide variation in accordance with stratigraphy in their major element contents(e.g. Si O2 69.46–82.13, Al2O3 2.28–8.88 in wt%), reflecting the distinctive provenance and in part an unstable period in terms of tectonic activity. Geochemical classification of the sediments shows mostly sub-arkose with few sub-litharenites. Some major and trace elements display comprehensible correlation with Al2O3 confirming their possible hydraulic fractionation. The chemical index of alteration(CIA*), W* index, index of compositional variability(ICV), plagioclase index of alteration(PIA*) values and the ratio of Si O2/Al2O3, suggest low degrees of chemical weathering in the source areas as well as immature to moderately mature the sediments. The sediments suggest semi-arid climatic trends within oxic deltaic depositional conditions during the Holocene, at 3–12 ka. Whole rock geochemistry and discrimination diagrams demonstrate the continental signature derivatives, which might have been derived from the felsic to intermediate igneous rocks(granitic plutonic rocks) as well as from quartzose sedimentary/metamorphic provenance. These typical sources are present in a vast region of the Himalayan belt and catchment areas of Ganges. The tectonic setting of the sediments demarcates typically passive margin with slightly continental arc system. | Ismail Hossain Krisna Kanta Roy Pradip Kumar Biswas Mahbubul Alam Md. Moniruzzaman Farah Deeba | 2014 | Chinese Journal Of Geochemistry2014，33，4： | 3 |
| 3 | Polymer nanoeomposites containing carbon nanotubes显示文摘 | Moniruzzaman M Winey K I | 2006 | Maeromolecules2006，39，16： | 1 |
| 4 | Ionic liquid based microemulsion with pharmaceutically accepted components: Formulation and potential applications显示文摘 | Muhammad Moniruzzaman Noriho Kamiya Masahiro Goto | 2010 | Journal of Colloid And Interface Science2010，，： | 1 |
| 5 | Extacellularmeli-biose and fructose are intermediate sinraffinose catabolism during fermentation to ethanol by engineered enteric bacteria显示文摘 | Moniruzzaman M Lai X York S W Ingrain L O | 1997 | Bacteriol1997，179，： | 1 |
| 6 | Polymer nanocomposites containing carbon nanotubes 显示文摘 | Moniruzzaman M Winey K I | 2006 | Macromolecules2006，39，16： | 1 |
| 7 | A population- based study of risk factors for drug-resistant TB in British Columbia 显示文摘 | Moniruzzaman A Elwood RK Schulzer M | 2006 | Int J Tuberc Lung Dis2006，10，6： | 1 |
| 8 | Polymer nanocomposites containing carbon nanotubes 显示文摘 | MONIRUZZAMAN M WINEY K I | 2006 | Macromolecules2006，39，： | 1 |
| 9 | Polymer Nanocomposites Containing Carbon Nanotubes显示文摘 | Moniruzzaman M Winey K 1 | 2006 | Macronwlecules2006，39，16： | 1 |
| 10 | Saccharification and alcohol fer- mentation of steam-exploded rice straw显示文摘 | Moniruzzaman M | 1996 | Bioresource Technology1996，55，： | 1 |
| 11 | Structure of polycrystalline silicon films deposited at low temperature by plasma CVD on substrates exposed to different plasma显示文摘 | MONIRUZZAMAN S | 1999 | Thin Solid Films1999，337，1： | 1 |
| 12 | 查看详情显示文摘 | M Moniruzzaman K Nakashima N Kamiya | | 0，，03： | 1 |
| 13 | Ionic liquid based microemulsion with pharmaceutically accepted components: Formulation and potential applications显示文摘 | MONIRUZZAMAN M KAMIYA N GOTO M | 2010 | J Colloids Interface Sci2010，352，1： | 1 |
| 14 | Effect of steam explosion on the physicochemical properties and enzymatic saccharification of rich straw显示文摘 | Moniruzzaman M | 1996 | Appl Bipchem Biotechnol1996，59，1： | 1 |
| 15 | Polymer nanocomposites containing carbon nanotubes 显示文摘 | Moniruzzaman M Winey K I | 2006 | Macromolecules2006，39，16： | 1 |
| 16 | Polymer nanocomposites containing car- bon nanotubes显示文摘 | Moniruzzaman M Winey K I | 2006 | Macromolecules2006，39，16： | 1 |
| 17 | Ethanol production from dilute acid hydrolysate of rice hulls using genetically engineered Escherichia coli显示文摘 | Mohammed Moniruzzaman Ingram Lonnie O | 1998 | Biotechnology Letters1998，20，10： | 1 |
| 18 | Ionic liquid based micro?emulsion with pharmaceutically accepted components: Formu?lation and potential applications显示文摘 | Moniruzzaman M Kamiya N Goto M | 2010 | Journal of Colloid and In?terface Science2010，352，： | 1 |
| 19 | Enzymatic hydrolysis of high-moisture corn fiber pretreated by AFEX and recovery and recycling of the enzyme complex 显示文摘 | MONIRUZZAMAN M DALE B E HESPELL R B | 1997 | Applied Biochemistry and Biotechnology1997，67，11： | 1 |
| 20 | Biocatalysis in water-in?ionic liquid microemulsions , a case study with horseradish per?oxidase显示文摘 | Moniruzzaman Ms Kamiya N Goto M | 2009 | Langmuir2009，25，2： | 1 |
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