Khan Mamun Reza, Asw Kurny, Fahmida Gulshan
Traditional chemical, physical and biological processes for treating wastewater containing textile dye have such disadvantages as high cost, high energy requirement and generation of secondary pollution during treatment process. The advanced oxidation processes technology has been attracting growing...
Khan Mamun Reza, Asw Kurny, Fahmida Gulshan
The photocatalytic degradation of Methylene Blue (MB) dye has been investigated by locally available Magnetite with H 2 O 2 . Parameters such as Magnetite dosage, concentration of dye pH effect, light intensity and oxidizing agent (H 2 O 2 ) were used to study the degradation of MB. The degradation ...
Md. Al Hossaini Shuva, Asw Kurny
Effects of reaction variables on leaching in hydrochloric acid of LiCoO2 contained in cathodic electrode of spent lithium ion batteries were investigated. The dissolution of LiCoO2 was found to increase with an increase in temperature, concentration of HCl, time and solid/liquid (S/L) ratio. Li and ...
Tahmina Banu, Md Muktadir Billah, Fahmida Gulshan, Asw Kurny
Coal fly ash, a burnt residue of pulverized coal, is hazardous and its disposal is a problem. In Bangladesh, the annual generation of this waste is approximately 0.6 million tons. On a global basis, less than 20 percent of coal fly ash (CFA) is used in the concrete related applications while the rem...
Abul Hossain, Asw Kurny
Effects of strain rates on tensile properties and fracture behavior of Al-6Si-0.5Mg alloy containing 0.5 – 4 wt% Cu were studied. The solution treated alloys, containing different amounts of Cu, were aged isochronally for 1 hour at temperatures up to 300°C. Tensile strengths were found to increase w...
Sheik Md Kazi Nazrul Islam, ASW Kurny and Fahmida Gulshan
The aim of the study was to investigate the photocatalytic efficiency of mill scale (waste iron oxide collected from local steel plants) for the degradation of textile dyes. The photodegradation on methylene blue (MB) in natural environment with co-existence of mill scale and oxalic acid/ H<sub>2</s...
Mohammad Sharear Kabir, Tamzid Ibn Minhaj, Delower Hossain, Asw Kurny
Wear behaviour of Al-4.5 mass% Cu-3.4 mass% Fe in-situ composite with different Mg additions was investigated. The composite was produced by solidification processing whereby Al3Fe intermetallic formed in-situ in Al-Cu matrix. The percentages of iron, copper and aluminium were kept constant while va...
M Mahbubur Rahman, Md. Rakibul Qadir, Ajm Tahuran Neger, Asw Kurny
Galvanizing plant waste (zinc dross) containing 27.66% zinc was leached in HCl solutions. Zinc in solution was precipitated as Zn(OH)2 by adding ammonium hydroxide. The product was characterized by atomic absorption spectroscopy, thermogravimetric analysis, x-ray diffraction analysis, and scanning e...
Majharul Haque Khan, Asw Kurny
Manganese and zinc contained in the electrolyte paste of spent zinc-carbon dry cell batteries were leached in sulfuric acid in presence of hydrogen peroxide as a reducing agent. Kinetic parameters were established from the time versus extent of dissolution curves using temperature as variable and ke...
MM Rahman, AJMT Neger, M. A. Gafur, Asw Kurny
Galvanizing plant wastes containing 71.82% lead was leached in hydrochloric acid. Lead was precipitated from the leach liquor as lead chloride and purified by recrystallisation. The process parameters like concentration of hydrochloric acid, time of leaching, mode of reaction, number of re-crystalli...
Abul Hossain, Fahmida Gulshan, Asw Kurny
This study characterizes the advanced electrochemical corrosion behavior of Ni content Al-Si-Cu automobile engine block alloys. The engine block cast samples were thermally modified for mechanical properties optimization. The corrosion studies of these thermal treated alloys were investigated using...
MR Uddin, Fahmida Gulshan, Asw Kurny
Raw material powder mixtures have been prepared with PVC resin, unplasticized polyvinylchloride (uPVC) scrap and additives. A twin screw extruder has been used to make pipe for sample preparation from the mixture. Domestic and external uPVC scrap were formulated and blended with PVC resin to form me...