List of Articles Open Access Article Abstract Page Full-Text 1 - Review on low cost adsorbents in waste water treatment by adsorption Open Access Article Abstract Page Full-Text 2 - Degradation of Red color 198 micro pollutant under sonolysis and ozon in the presence of nano ZnO and TiO2 as catalyst Open Access Article Abstract Page Full-Text 3 - Bidboland gas sweetening unit simulation using software Hysys refinery Open Access Article Abstract Page Full-Text 4 - Investigation of chemical compounds of Echinaceapurpurea herbal extract indifferent drying methods with method of HPLC Open Access Article Abstract Page Full-Text 5 - Catalytic dgradation of aniline by ozone Open Access Article Abstract Page Full-Text 6 - Improvement of control system of the benzen extraction unit using plant-wide control Open Access Article Abstract Page Full-Text 7 - Removal of Mercaptans from Natural Gas by Adsorption Open Access Article Abstract Page Full-Text 8 - Study of chemical release from the facility and its impact on the environment