Effects of co-pyrolysis of rice husk and sewage sludge on the bioavailability and environmental risks of Pb and Cd.
Environ Technol
; 42(15): 2304-2312, 2021 Jun.
Article
de En
| MEDLINE
| ID: mdl-31810427
ABSTRACT
In this study, biochars were produced by co-pyrolysis of rice husk and sewage sludge, the environmental risk of heavy metal (Pd and Cd) in the biochars was assessed. Co-pyrolysis resulted in a lower yield but a higher C content compared with sewage sludge pyrolysis alone, the relative contents of Pb and Cd in biochars were declined. Co-pyrolysis process transformed the bioavailable heavy metals into stable speciation. The environmental risk assessment codes of Pb and Cd were reduced by 1-2 grades. The co-pyrolysis technology provides a feasible method for the safe disposal of heavy metal-contaminated sewage sludge.
Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Oryza
/
Métaux lourds
Type d'étude:
Etiology_studies
/
Risk_factors_studies
Langue:
En
Journal:
Environ Technol
Sujet du journal:
SAUDE AMBIENTAL
/
TOXICOLOGIA
Année:
2021
Type de document:
Article