Published April 2001 | Version v1
Journal article Metadata-only

Sorption of lanthanum(3) ions by raw mordenite-containing tuff

Creators

  • 1. SO RAN, Bajkal'skij Inst. Prirodopol'zovaniya, Ulan-Udeh (Russian Federation)

Description

Equilibrium in the mordenite-containing tuff - lanthanum(3) system is studied in wide interval of concentrations (1 - 2000 μg ml-1). Investigations were conducted in static conditions from solutions of lanthanum sulfate and lanthanum nitrate at 1 : 10 and 1 : 5 ratios of solid and liquid phases. Kinetic parameters of sorption are determined. Isotherms of sorption are characterized by the availability of maximum which is connected with complex nature of the interactions. The sorption rate of lanthanum(3) ions on mordenite-containing tuff is dictated by anion nature, grain sizes, concentration of solution, correlation of solid and liquid phases and it is controlled by mixed mechanism during sorption from sulfate solution and extra-diffusion one - during sorption from nitrate solution

Abstract (Russian)

Изучено равновесие в системе морденитсодержащий туф - лантан(3) в широком интервале концентраций (1 - 2000 мкг мл-1). Исследования проводили в статических условиях из растворов сульфата и нитрата лантана при соотношении твердой и жидкой фаз 1 : 10 и 1 : 50. Определены кинетические параметры сорбционного процесса. Изотермы сорбции характеризуются наличием максимума, что связано со сложным характером взаимодействий. Скорость сорбции ионов ланатана(3) на морденитсодержащем туфе зависит от природы аниона, размеров зерен, концентрации раствора, соотношения твердых и жидких фаз и контролируется смешанным механизмом при сорбции из сульфатного раствора и внешнедиффузионным - при сорбции из нитратного раствора

Additional details

Additional titles

Original title (Russian)
Сорбция ионов лантана(3) природным морденицодержащим туфом

Publishing Information

Journal Title
Zhurnal Prikladnoj Khimii
Journal Volume
74
Journal Issue
4
Journal Page Range
p. 564-567
ISSN
0044-4618
CODEN
ZPKHAB

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
33020520
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S54: ENVIRONMENTAL SCIENCES;
Descriptors DEI
CHEMICAL REACTION KINETICS; CONCENTRATION RATIO; EQUILIBRIUM; GRAIN SIZE; LANTHANUM COMPLEXES; LANTHANUM NITRATES; LANTHANUM SULFATES; MORDENITE; SORPTION; TUFF
Descriptors DEC
COMPLEXES; IGNEOUS ROCKS; INORGANIC ION EXCHANGERS; ION EXCHANGE MATERIALS; KINETICS; LANTHANUM COMPOUNDS; MATERIALS; MICROSTRUCTURE; MINERALS; NITRATES; NITROGEN COMPOUNDS; OXYGEN COMPOUNDS; RARE EARTH COMPLEXES; RARE EARTH COMPOUNDS; REACTION KINETICS; ROCKS; SILICATE MINERALS; SIZE; SULFATES; SULFUR COMPOUNDS; VOLCANIC ROCKS; ZEOLITES

Optional Information

Notes
17 refs., 3 figs., 1 tab.