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
in English
| LILACS
| ID: biblio-1011530
Responsible library:
BR1.1
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.
Full text:
Available
Collection:
International databases
Database:
LILACS
Main subject:
Malpighiales
/
Herbicides
/
Industrial Waste
Type of study:
Evaluation study
Country/Region as subject:
South America
/
Brazil
Language:
English
Journal:
Braz. arch. biol. technol
Journal subject:
Biology
Year:
2019
Document type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Federal Institute of Education, Science and Technology of Goias/BR
/
Federal University of Goias/BR
/
Pontifical University of Goias/BR