semi-aerobic leachate is characterized by organic matter (cod, bod) which is relatively low in concentration and difficult to biodegrade. in conventional treatment systems, the low biodegradability is attributed to partial stabilization of leachate at the landfill. biological treatment of leachate in malaysia is not well established and any important data for the treatment process is not availa...

Currently, heavy metal-contaminated groundwater is an environmental concern. This study investigated the use of bamboo biochar, chitosan-impregnated and iron-impregnated biochar for arsenic, iron, manganese removal from groundwater. Isotherms adsorption by derived were compared with those commercial activated carbon in simulated composed single trinary metal solutions. The binding metals virgin...

Vertically aligned carbon nanotube field emitters with 100 nm-dot array structure were fabricated using dc plasma enhanced chemical vapor deposition, where dot catalysts were patterned by electron beam lithography. In order to optimize the growth condition of VACNTs, the morphologies of CNTs were investigated by changing gas ratio between NH3 and C2H2 gases. It was found that morphology of CNTs...

In this laboratory scale study, impregnated almond shell activated carbon was used as adsorbent to investigate its feasibility for nitrate adsorption from aqueous medium. The effects of activated carbon dosage and contact time have been examined in batch experiments. Experimental data show that impregnated activated carbons by Fe0, Fe2 (SO4)3, and FeSO4 were more effective than virgin almond ac...

Global energy sources such as coal and oil are limited, and the burning of such fossil resources creates pollution problems. Wind energy offers one of several promising clean alternatives to carbon-based fuels. However, the composite materials currently available for producing wind turbine blades cannot accommodate the scale-up of wind energy due to their high price and disposal challenges (e.g...

abstract aims: even low concentrations of phenol in industrial waste can cause many difficulties for the aquatic environment. so removal of this organic matter is an important issue. the adsorption process, is one of the most effective methods for isolation and purification of phenols. the aim of this study was to introduce wood haloxylon as a natural and new absorbent to remove phenol from aqu...

in the paper we developed a new method to determine the absolute amount of adsorption. this method relies on the excess adsorption isotherm and the density profile in the pore of one material. to compute the density profile and decrease complex calculation of obtaining the absolute amount of adsorption we introduced simplified local-density (sld) model. a few of appropriate parameters were acqu...