Use of Adsorbent Biochar from Pequi (Caryocar Brasiliense) Husks for the Removal of Commercial Formulation of Glyphosate from Aqueous Media
Braz. arch. biol. technol
;
62: e19180450, 2019. tab, graf
Article
Dans Anglais
| LILACS
| ID: biblio-1011530
ABSTRACT
Abstract This study evaluated the capacity of adsorbent biochar derived from pequi husks to remove glyphosate (commercial formulation) in aqueous medium under three pH conditions (5.5, 7.0 and 8.0). This biochar presented a mean yield of 33.1% ± 2.66% and a high amount of surface particles of small dimensions endowing it with high surface area. The results showed that removal is proportional to pH increase in the range of 5.5 to 8.0. Adsorption assays performed at pH 7 and 8 fitted better to the Langmuir pseudo-first order kinetics model with fast adsorption in the first 15 to 30 minutes. The results for the acidic pH range fit none of the adopted models satisfactorily. The results obtained suggest that adsorbent can be used as an efficient and inexpensive alternative for the adsorption of glyphosate present in commercial formulations from aqueous matrices.
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Malpighiales
/
Herbicides
/
Déchets industriels
Type d'étude:
Études d'évaluation
Pays comme sujet:
Amérique du Sud
/
Brésil
langue:
Anglais
Texte intégral:
Braz. arch. biol. technol
Thème du journal:
Biologie
Année:
2019
Type:
Article
Pays d'affiliation:
Brésil
Institution/Pays d'affiliation:
Federal Institute of Education, Science and Technology of Goias/BR
/
Federal University of Goias/BR
/
Pontifical University of Goias/BR
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