The subject of using inexpensive by-product material (cement kiln dust (CKD)) is considered attra... more The subject of using inexpensive by-product material (cement kiln dust (CKD)) is considered attractive in terms of sustainable green development and eliminating cost of disposal. In the present study an extension for analytical sorption model derived by Sulaymon et al. (2016) was achieved for distinguishing between adsorption and/or precipitation mechanisms in the presence of CKD. This model was validated with the batch experimental measurements obtained for simulated water with pH of 3, agitation speed not less than 200 rpm and contact time either of 40 min for cadmium under different values of adsorbent dosage and contaminant concentrations. The developed model successfully described the isotherm relationship for total sorption (adsorption + precipitation) of cadmium with coefficient of determination equal to 0.90 where the precipitation has highest proportion (≥ 70%).
IOP Conference Series: Materials Science and Engineering, 2020
The nature of natural fibers is porous, which is useful feature for sound absorption. These types... more The nature of natural fibers is porous, which is useful feature for sound absorption. These types of materials (natural) are less ecofriendly and ecofriendly. This study deal with the effect of using natural composite material as sound insulation, many types of natural materials with fiber glass had been used in this study, i.e. cotton, wool, fronds and vegetarian fibers with different thicknesses. The study consist of built attest rig to measure the different frequencies and sound waves experimentally to calculate the transmission losses and coefficient of transmission losses that are dialing from function generator use sound pressure level. The best results of transmission losses recorded for the composite materials (Polyester +Random + wool) and (polyester + fiber glass + cotton) in three thickness 6mm, 8mm and 10mm. From other side, the best results of absorption of noise at different frequencies recorded for (polyester + fiber glass + cotton) and (Epoxy + fiber glass + plan fro...
The subject of using inexpensive by-product material (cement kiln dust (CKD)) is considered attra... more The subject of using inexpensive by-product material (cement kiln dust (CKD)) is considered attractive in terms of sustainable green development and eliminating cost of disposal. In the present study an extension for analytical sorption model derived by Sulaymon et al. (2016) was achieved for distinguishing between adsorption and/or precipitation mechanisms in the presence of CKD. This model was validated with the batch experimental measurements obtained for simulated water with pH of 3, agitation speed not less than 200 rpm and contact time either of 40 min for cadmium under different values of adsorbent dosage and contaminant concentrations. The developed model successfully described the isotherm relationship for total sorption (adsorption + precipitation) of cadmium with coefficient of determination equal to 0.90 where the precipitation has highest proportion (≥ 70%).
IOP Conference Series: Materials Science and Engineering, 2020
The nature of natural fibers is porous, which is useful feature for sound absorption. These types... more The nature of natural fibers is porous, which is useful feature for sound absorption. These types of materials (natural) are less ecofriendly and ecofriendly. This study deal with the effect of using natural composite material as sound insulation, many types of natural materials with fiber glass had been used in this study, i.e. cotton, wool, fronds and vegetarian fibers with different thicknesses. The study consist of built attest rig to measure the different frequencies and sound waves experimentally to calculate the transmission losses and coefficient of transmission losses that are dialing from function generator use sound pressure level. The best results of transmission losses recorded for the composite materials (Polyester +Random + wool) and (polyester + fiber glass + cotton) in three thickness 6mm, 8mm and 10mm. From other side, the best results of absorption of noise at different frequencies recorded for (polyester + fiber glass + cotton) and (Epoxy + fiber glass + plan fro...
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Papers by Hadeel Jasim