Published 2000 | Version v1
Journal article Metadata-only

Kinetic features of heavy metal leaching from electroplating sludge

Creators

  • 1. Nizhegorodskij Gosudarstvennyj Tekhnicheksij Univ (Russian Federation)

Description

The process of leaching heavy metals (M = Cd, Cu, Fe, Cr, Zn, Ni) from electroplating sludge by sulfuric acid, depending on the acid concentration, temperature and intensity of agitation, is studied. Basic stages and kinetic parameters of the process are ascertained. It is shown that cadmium leaching rate is controlled by the rate of external diffusion, the activation energy value amounting to 5.1 kJ/mol

Abstract (Russian)

Исследован процесс выщелачивания тяжелых металлов (M = Cd, Cu, Fe, Cr, Zn, Ni) из гальваношламов серной кислотой в зависимости от концентрации кислоты, температуры и интенсивности перемешивания. Установлены основные стадии и кинетические параметры процесса. Показано, что скорость выщелачивания кадмия определяется скоростью внешней диффузии, значение энергии активации при этом составляет 5,1 кДж/моль

Additional details

Additional titles

Original title (Russian)
Кинетические особенности процесса выщелачивания тяжелых металлов из гальваношламов

Publishing Information

Journal Title
Izvestiya Vysshikh Uchebnykh Zavedenij, Khimiya i Khimicheskaya Tekhnologiya
Journal Volume
43
Journal Issue
3
Journal Page Range
p. 128-130
ISSN
0579-2991
CODEN
IVUKAR

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
32019820
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ACTIVATION ENERGY; AQUEOUS SOLUTIONS; CADMIUM COMPOUNDS; CHEMICAL REACTION KINETICS; CONCENTRATION RATIO; ELECTROPLATING; LEACHING; SLUDGES; SULFURIC ACID; TEMPERATURE RANGE 0273-0400 K
Descriptors DEC
DEPOSITION; DISPERSIONS; DISSOLUTION; ELECTRODEPOSITION; ELECTROLYSIS; ENERGY; HOMOGENEOUS MIXTURES; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; KINETICS; LYSIS; MIXTURES; OXYGEN COMPOUNDS; PLATING; REACTION KINETICS; SEPARATION PROCESSES; SOLUTIONS; SULFUR COMPOUNDS; SURFACE COATING; TEMPERATURE RANGE

Optional Information

Notes
3 refs.; 3 figs.