Removal of antibiotics from aqueous solution by bioadsorbant

In this study, dehydrated wheat bran, which is a natural product grows in the north of Algeria has been used as bioadsorbant for antibiotics removal from aqueous solution. Experimental data showed that the sorption of Tylosin increased with increasing the amount of adsorbent and decreased at high temperature. ∆H◦ and ∆S◦ were calculated from the slope and intercept of plots of ln(kd) versus 1/T, the adsorption process was found to be exothermic and more favourable at low temperature

Performance of a Single Effect Solar Absorption Cooling System (Libr-H2O)

AbstractFossil fuels are on the verge of depletion, and the world energy consumption is in constant progression, resulting in very serious concerns about environmental issues. Mechanical refrigeration based on vapor compression principle uses high grade electrical energy, and refrigerant fluid with a global worming and ozone depletion potentials. Absorption machines using solar thermal energy are excellent alternatives to mechanical refrigeration. Absorption cooling systems are mature technologies that proved their abilities to provide clean cooling with the use of low grade solar and waste heat. In this paper we presented a modeling and simulation study of a 70kW Yazaki absorption cooling machine working with water-lithium bromide mixture. The influence of different parameters (Heat exchanger efficiency, Generator, absorber and condenser temperatures) on the system performance is showed

Comparative Study of Two Configurations of Solar Tower Power for Electricity Generation in Algeria

AbstractThe aim of this paper is to provide a comparative energetic and economic assessment of two solar tower power configurations; the molten salt (MS) and the direct steam generation (DSG) technologies in order to study the appropriate configuration for Algerian climate conditions. For this, Tamanrasset has been chosen as representative site to simulate the proposed solar tower power plant configurations. The first section of this paper analyses the conversion of the solar energy into electric energy. The NREL's SAM software (Solar Advisor Model) is used to evaluate the energetic performances of the two plant configurations in the proposed site and also to study their economic feasibility in the second section