Potential utilisation of sewage sludge and paper mill waste for biosorption of metals from polluted waterways.
Bioresour Technol
; 79(1): 35-9, 2001 Aug.
Article
em En
| MEDLINE
| ID: mdl-11396905
ABSTRACT
The adsorption of cadmium, copper(II), lead and zinc ions from aqueous solution by sewage sludge, paper mill waste (PMW) and composted PMW was investigated along with the influence of pre-treatment on composted PMW. Langmuir adsorption isotherms were fitted where appropriate. Sewage sludge was the most effective biosorbent of the waste products for all metal ions examined, adsorbing, for example, up to 39.3 mg/g of Pb at an initial concentration of 77.8 mg/l. PMW was a less effective biosorbent than sewage sludge. However, it was found that composting the PMW resulted in an increase in metal uptake capacity and both sewage sludge and composted PMW have potential for low-cost remediation of high leachate wastewaters. The desorption of metal ions from PMW compost was most effective using 0.1 N H2SO4 and 1 mM nitrilotriacetic acid (NTA).
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Papel
/
Esgotos
/
Poluentes da Água
/
Eliminação de Resíduos Líquidos
/
Metais Pesados
/
Resíduos Industriais
Idioma:
En
Ano de publicação:
2001
Tipo de documento:
Article