Published 2011 | Version v1
Miscellaneous Metadata-only

Chitosan membrane development and design of equipment for the removal of heavy metals from water

Creators

  • 1. Inst. Tecnologico de Costa Rica, Vicerrectoria de Investigacion y Extension, Direccion de Proyectos, Escuela de Quimica, Cartago (Costa Rica)

Description

A filtration technique has compared with 1,75% m/v chitosan membranes, crosslinked with glutaraldehyde (0,08% m/v) and without cross link, to quantify the removal capacity of chromium, copper and cadmium ions of model solutions. In addition, a simple and low cost equipment was developed to use with prepared membranes. The main goal has been to use biodegradable materials for removing heavy metals from water, through a low energy consumption, cheap, and applicable to specific problems. Two data sheets were prepared for the membranes and was found that chromium was the metal with the highest removal from water, by using a crosslinked membrane. Metal adsorption was best adjusted to the Freundlich isotherm model, better than Langmuir isotherm model. However, no correlation has been found between pore size of the membranes and crosslinking degree. (author)

Availability note (English)

Available from Biblioteca Luis Demetrio Tinoco, Universidad de Costa Rica

Abstract (Spanish)

La eficiencia de la filtracion se ha comparado con membranas de quitosano 1,75% m/v, entrecruzadas con glutaraldehido (0,08% m/v) y sin entrecruzar, para estimar la capacidad de remocion de iones de cadmio, cromo y cobre de disoluciones modelo. Ademas, un equipo de bajo costo fue disenado para la experimentacion con las membranas elaboradas. La finalidad ha sido emplear materiales biodegradables para remover metales pesados de aguas, mediante una tecnica de bajo consumo energetico y, por otra parte, generar soluciones baratas, efectivas y aplicables a problemas especificos. Dos fichas tecnicas fueron elaboradas con informacion sobre las membranas y se ha encontrado que el cromo fue el metal removido en mayor medida desde el agua, por las membranas entrecruzadas. La absorcion de metal se ha ajustado al modelo de isoterma de Freundlich mejor que el modelo de isoterma de Langmuir. Sin embargo, una relacion no ha sido encontrada entre el tamano de poro de las membranas y el grado de entrecruzamiento. (autor)

Additional details

Additional titles

Original title (Spanish)
Desarrollo de membranas de quitosano y diseno de un equipo para la eliminacion de metales pesados del agua

Publishing Information

Imprint Place
Cartago (Costa Rica)
Imprint Pagination
27 p.

INIS

Country of Publication
Costa Rica
Country of Input or Organization
Costa Rica
INIS RN
44079176
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S54: ENVIRONMENTAL SCIENCES; S60: APPLIED LIFE SCIENCES;
Resource subtype / Literary indicator
Numerical Data, Non-conventional Literature
Descriptors DEI
BIODEGRADATION; CADMIUM; CHEMICAL ANALYSIS; CHROMIUM; COPPER; ELECTRON MICROSCOPY; EXPERIMENTAL DATA; HEAVY METALS; INFRARED SPECTRA; IONS; LIQUID WASTES; MECHANICAL PROPERTIES; MEMBRANES; SEPARATION PROCESSES; SPECTROSCOPY; TOXIC MATERIALS; WATER POLLUTION
Descriptors DEC
CHARGED PARTICLES; CHEMICAL REACTIONS; DATA; DECOMPOSITION; ELEMENTS; HAZARDOUS MATERIALS; INFORMATION; MATERIALS; METALS; MICROSCOPY; NUMERICAL DATA; POLLUTION; SPECTRA; TRANSITION ELEMENTS; WASTES

Optional Information

Notes
This record relates to RN 44074631