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Название: Adsorption of inorganic ions from aqueous solutions using mineral sorbent - tripoli
Авторы: Yurmazova, Tatyana Aleksandrovna
Shakhova, Nina Borisovna
Hoang Tran Tuan
Ключевые слова: адсорбция; ионы; водные растворы; минеральные сорбенты; трепел; адсорбенты
Дата публикации: 2016
Издатель: EDP Sciences
Библиографическое описание: Yurmazova T. A. Adsorption of inorganic ions from aqueous solutions using mineral sorbent - tripoli / T. A. Yurmazova, N. B. Shakhova, Hoang Tran Tuan // MATEC Web of Conferences. — 2016. — Vol. 85 : Chemistry and Chemical Technology in XXI Century (CCT 2016) : Conference, May 17-20, 2016, Tomsk, Russia : [proceedings]. — [01017, 7 p.].
Аннотация: The present research considers the adsorption of H[2]AsO[4] -, CrO[4]{2-}, Ni{2+}, Fe{3+} ions from their aqueous solutions by mineral sorbent - tripoli. Tripoli was characterized by different physico-chemical methods such as X-ray phase analysis, inductively coupled plasma atomic emission spectrometry, method of thermal desorption of nitrogen. Contact time, specific surface area, specific pore volume and surface charge of tripoli have been determined. The effect of tripoli surface area modification by iron (III) oxide-hydroxide on tripoli sorption capacity for the arsenic anions has been investigated. The maximum adsorption was found to occur within 30 minutes of contact time. Different models including the pseudofirst-order kinetic and the pseudo-second-order kinetic equations were used to analyse kinetic data. All the models being considered, it has been stated that the pseudo-second-order kinetic model is the most appropriate to describe the adsorption behaviour of Fe{3+} ions on tripoli. The adsorption has been explained in terms of Langmuir and Freundlich isotherms. Based on values of correlation coefficients, H[2]AsO[4]{-}, CrO[4]{2-}, Ni{2+}, Fe{3+} sorption isotherm data were better fitted by Langmuir model. It has been detected that the modification of mineral sorbent (tripoli) leads to the increase in H[2]AsO[4]{-} adsorbing capacity of tripoli. In general, the results indicated that tripoli can be an efficient low-cost sorbent for removing H[2]AsO[4]{-}, Ni{2+}, Fe{3+} ions from aqueous solutions.
URI: http://earchive.tpu.ru/handle/11683/36570
Располагается в коллекциях:Материалы конференций

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