توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Investigation of sorption isotherm and removal kinetics of arsenik onto saw dust
نویسنده(ها): ،
اطلاعات انتشار: کنفرانس بین المللی پژوهش در علوم و تکنولوژی، سال
تعداد صفحات: ۵
In this research the adsorption of arsenic as a pollutant from textile industry onto carbonized sawdust has been investigated. The effect of various operational parameters such as adsorbent dosage ‚ contact time ‚ agitation rate ‚ pH ‚ initial concentration of dye and temperature on removal percentage of dye were studied in a batch system. Thermo dynamics parameters were calculated to know the adsorption nature. Values of ΔG˚ postulate an spontaneous process and calculated Values of ΔH˚ indicate and exothermic process and Values of ΔS˚ show the enhanced disorderliness on the adsorbent surface in comparison to dye solution. Also adsorption isotherms and Kinetics studies revealed that the adsorption of arsenic onto carbonized sawdust obeys Langmuir isotherm and pseudo–second–order kinetics..<\div>

۲Investigation of sorption isotherm and removal kinetics of metal onto rice bran from wastewater
نویسنده(ها): ،
اطلاعات انتشار: کنفرانس بین المللی پژوهش در علوم و تکنولوژی، سال
تعداد صفحات: ۹
A new sorbent (raw rice bran) was investigated for heavy metal ions removal from aqueous solutions. Rice bran characterisation was carriedout in order to identify the functional groups possibly involved in the metal binding. The binding process was studied in terms of bindingcapacity and metal affinity. The adsorption equilibrium was well described by the Freundlich isotherm model. The negative Gibbs free energyvalues obtained in this study with rice bran confirm the feasibility of the process and the spontaneous nature of sorption<\div>
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