Wyniki wyszukiwania - BazTech

Ograniczanie wyników

2 International Letters of Chemistry, Physics and Astronomy

2 2015

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Kinetics and thermodynamics of Bezaktiv Yellow HE-4G on mixture of date pits and olive stone from aqueous solution

Babaci H., Aksas H., Louhab K.

International Letters of Chemistry, Physics and Astronomy

2015

Vol. 45

1--15

In this paper, the adsorption of an anions dye Bezaktiv Yellow HE-4G onto mixture biosorbent, olive stones and date pits was investigated in aqueous solution. The effect of operational parameter such as initial dye concentration, time contact, temperature and pH was evaluated. The pseudo first-order and the pseudo second-order were used to describe the kinetics data. The data were evaluated for compliance with Freundlich and Langmuir models. Biosorptions data were successfully described by Freundlich isotherm model and the pseudo second-order model. Thermodynamic parameters indicated that the biosorption of BY HE-4G onto biosorbent mixture was spontaneous and endothermic in nature. The results indicated that the mixture of date pits and olive stone could be used as an adsorbent for textile waste water treatment without high cost.

Evaluation of environmental impact of cement production in Algeria using life cycle assessment

Boughrara S., Chedri M., Louhab K.

International Letters of Chemistry, Physics and Astronomy

2015

Vol. 45

79--84

The aim of this study is the use of Life Cycle Assessment, to evaluate the impact generated by cement manufactory situated in Sour EL Ghozlane town in Algeria country, which use the dry process to produce cement Portland. The LCA method is used for compiling and examining the inputs and outputs of energy, raw material and environmental impacts directly attributable to the manufacture and functioning of a product throughout its life. It is also used to determine element and energy contributing to each impact evaluated. Potentials impacts are evaluated using the SimaProV.7.1 software and IMPACT2000+ method in this study.