Mestrado Profissional em Uso Sustentável dos Recursos Naturaishttp://memoria.ifrn.edu.br/handle/1044/1152026-05-24T01:55:12Z2026-05-24T01:55:12ZA importância da prevenção no planejamento da gestão ambiental nos municípios do RN: a ação da gestão pública frente aos desastres naturaihttp://memoria.ifrn.edu.br/handle/1044/32272026-05-19T16:00:41Z2026-03-11T00:00:00ZA importância da prevenção no planejamento da gestão ambiental nos municípios do RN: a ação da gestão pública frente aos desastres naturai
2026-03-11T00:00:00ZColeta seletiva e inclusão social: uma proposta de valorização das organizações recicladoras de Parnamirim-RNhttp://memoria.ifrn.edu.br/handle/1044/32262026-05-19T12:30:48Z2025-11-05T00:00:00ZColeta seletiva e inclusão social: uma proposta de valorização das organizações recicladoras de Parnamirim-RN
2025-11-05T00:00:00ZA institucionalização da educação ambiental, sustentabilidade e resíduos sólidos em uma escola no município de Parnamirim(RN)http://memoria.ifrn.edu.br/handle/1044/32202026-05-14T12:30:43Z2025-11-19T00:00:00ZA institucionalização da educação ambiental, sustentabilidade e resíduos sólidos em uma escola no município de Parnamirim(RN)
2025-11-19T00:00:00ZUtilização de biocarvão para absorção de glifosato em meio aquosohttp://memoria.ifrn.edu.br/handle/1044/32172026-05-04T16:31:23Z2025-08-15T00:00:00ZUtilização de biocarvão para absorção de glifosato em meio aquoso
Glyphosate, one of the most widely sold pesticides, is the active ingredient in over 750
broad-spectrum herbicides. Its application across large crop areas and potential overuse,
have led to it being frequently researched in scientific literature. Although it is not
classified as extremely toxic, there is growing global attention to its potential direct and
indirect health effects. Adsorption is a promising route for glyphosate removal, and
materials derived from agricultural waste, such as green coconut husks, are emerging as
a sustainable alternative. Brazil is one of the world's largest coconut producers, generating
millions of tons of unused green coconut husks annually—up to 3 million tons per year.
These husks represent a vast lignocellulosic resource that can be converted into biochar
through heat treatment. The main objective of this study was to evaluate the efficiency of
biochar produced from green coconut husk waste as a biosorbent in removing glyphosate
from aqueous media. The results and discussions demonstrated that all biochar samples
were satisfactorily obtained through the pyrolysis process. The adsorption efficiency of
sample A7 was 84.36%. Glyphosate adsorption increased rapidly at low concentrations
and more slowly until the sites on the adsorbent surface were saturated. Both the
Langmuir and Freundlich models presented excellent fits to the data, which is consistent
with the most recent literature, indicating that glyphosate adsorption on biochar may
involve multiple mechanisms, including electrostatic attraction, physical pore trapping,
and size exclusion. EDS analyses indicated changes in elemental 2 composition
(reduction of carbon and oxygen and appearance of phosphorus) in the post-adsorption
samples, attesting to the effectiveness of the glyphosate adsorption process. In conclusion,
the results obtained indicate that green coconut shell biochar has promising potential as
an adsorbent for glyphosate removal in aqueous media. The high adsorption efficiency
observed with a small mass of adsorbent suggests that large quantities of biochar would
not be necessary for the treatment of contaminated water, contributing to the water
treatment process and to the promotion of sustainable Brazilian agriculture, with
responsible consumption and production.
2025-08-15T00:00:00Z