We have investigated the effects of chemical treatment on Single Wall Carbon Nanotube (SWCNT) before and after being modified with HNO3/H2SO4 by Raman, FTIR UV-Vis-NIR spectroscopy. The results show successful carboxylation CNT sidewalls as observed from This functionalization is achieved in 6-8 hrs refluxing. also report changes first second order Raman spectra SWNTs functionalized oxygenated groups. During experiment, we observe some important features: Radial breathing mode (RBM),...

Palm fiber reinforced polypropylene (PP) composites were manufactured using a single extruder and an injection molding machine. Raw palm was chemically treated with benzene diazonium salt to increase its compatibility the polymer matrix. Both raw utilized six levels of filler loading (10, 15, 20, 25, 30, 35 wt%) used during composite manufacturing. Microstructural analysis (scanning electron microscopy Fourier transform infrared spectroscopy) mechanical testing (tensile, flexural, impact,...

In this research, composites based on treated tropical sawdust and polypropylene (PP) were prepared using hot press molding machine. Raw was chemically with monomer, 2 - ethylhexyl methacrylate in order to improve the mechanical properties of composites. The influence physical sawdust-PP investigated at various loading level from 10 wt.% up 30 wt.%. Results indicate that sawdust–PP found be higher than those raw ones respectively. surface morphology obtained scanning electron microscopy...

Co-pyrolysis technology gain much popularity in recent years compared to other thermochemical conversion techniques due its environmental and socio-economic advantages. The present study focuses on the liquid fuel production through co-pyrolysis of polythene waste rice straw varying composition characterization products. laboratory scale experiments have been carried out a fixed bed LPG heating reactor under temperature between 4000-500 0C obtain maximum yield. feed sizes were 20mm × for...

Abstract Coir fiber reinforced polypropylene composites were manufactured using a single extruder and an injection molding machine. Raw coir was chemically treated with benzene diazonium salt to increase its compatibility the matrix. Both raw utilized five levels of loading (15, 20, 25, 30 35 wt%) used during composite manufacturing. Microstructural analysis (Fourier transform infrared spectroscopy scanning electron microscopy) mechanical (tensile, flexural, impact, hardness water...

Pathogenic bacteria such as Escherichia coli O157, Salmonella and Campylobacter are the main causes for food waterborne illnesses. Lysis of these is an important component sample preparation molecular identification pathogens. The pathogenicity so high that they cause illness at very low concentrations (1–10 CFU/100 mL). Hence, there a need to develop methods collect small number bacterial cells from large volume process them in automated reagent-free manner. An electrical method concentrate...

Trace metals contamination of vegetables in the sub-urban industrial area Bangladsh are increasing day by day. The mostly consumed like tomato (<em>Lycopersicon lycopersicum</em>), spinach (<em>Spinacea oleracea</em>), bean (<em>Lablab purpureus</em>), brinjal (<em>Solanum melongena</em>), potato tuberosum</em>), cauliflower (<em>Brassica oleracea var botrytis</em>), cabbage cupitata</em>), and radish (<em>Raphanus sativus</em>) were collected from area. arsenic (As), manganese (Mn), zinc...

Abstract Biological nutrient removal (BNR) using a novel liquid‐solid circulating fluidized‐bed (LSCFB) bioreactor was assessed with and without particle recirculation. The LSCFB employs attached microbial films for the biodegradation of both organics nutrients within single unit. This new technology combines more compact efficient fixed‐film process BNR that provides additional nitrogen phosphorous. A lab‐scale demonstrated to treat degritted municipal wastewater (MWW), operated at an...

Chemically treated sawdust-reinforced recycled polyethylene composites were fabricated by the injection molding method, and effect of fiber treatment on physicomechanical properties examined. Upon with sodium hydroxide benzoyl chloride, hydrophilic nature sawdust was significantly reduced. The physical such as water absorption, thickness swelling, biodegradation behavior revealed that upon surface modification, have attained significant resistance to moisture absorption microbial attacks....

In the present work, cetyltrimethylammonium bromide (CTAB)-treated sawdust-reinforced recycled polyethylene (RPE) composites were prepared by injection molding method. The mechanical properties of RPE reinforced with CTAB-treated sawdust evaluated and results compared those untreated ones. tensile strength (TS) values found to be much higher than Young's modulus (YM), flexural (FS), (FM), hardness also improved for treated sawdust–RPE fracture surface morphological features observed scanning...

Microfibrillated cellulose (MFC) particles were synthesized by a low-pressure alkaline delignification process, and their shape chemical structure investigated SEM Fourier transformation infrared spectroscopy, respectively. As novel electrorheological (ER) material, the MFC particulate sample was suspended in insulating oil to fabricate an ER fluid. Its rheological properties—steady shear stress, viscosity, yield dynamic moduli—under electric field strength characterized rotational...

In this work the ground water level and pumping for irrigation drinking purposes in Barind area of Bangladesh have been studied. The depth remains under 30 ft throughout year that enforcing use submersible pumps most parts zone. Multipurpose Development Authority (BMDA) Rajshahi WASA are major supplying authority Northern Part by using 14386 87 nos pumps, respectively. An investigation values life cycle cost elements has also carried out. performance running different sites were investigated...

The objective of this research is to define optimum operating conditions for preparation activated carbon from kenaf fiber which would conciliate highest removal efficiency manganese (II) ions along with maximum possible yield. Kenaf (KF) used prepare by using two step; physiochemical activation method consisted potassium hydroxide treatment (KOH) dioxide gasification. effects three variables; temperature (500 700°C), time (1 3 h) and KOH impregnation ratio, IR (1-3) on the percentage yield...