Linked Life Data

10849821

Source:http://linkedlifedata.com/resource/pubmed/id/10849821

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
2000-9-26
pubmed:abstractText
The herbicides applied in soils can be easily lost, owing to leaching, volatilization, and bio- and photodegradation. Controlled-release systems using polymeric matrices claim to solve these problems. The movement of the herbicides in the soil is also an important phenomenon to be studied in order to evaluate the loss processes. The development of mathematical models is a relevant requirement for simulation and optimization of such systems. This study reviews mathematical models as an initial step for modeling data obtained for controlled-release systems of herbicides (diuron, 2,4-dichlorophenoxyacetic acid, and ametryn) using sugarcane bagasse lignin as a polymeric matrix. The release kinetic studies were carried out using several acceptor systems including a water bath, soil, and soil-packed columns. Generally, these models take into account phenomena such as unsteady-state mass transfer by diffusion (Fick's law) and convection, consumption by several processes, and partitioning processes, resulting in partial differential equations with respect to time and space variables.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0273-2289
pubmed:author
pubmed:issnType
Print
pubmed:volume
84-86
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
595-615
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2000
pubmed:articleTitle
Mathematical modeling of controlled-release systems of herbicides using lignins as matrices. A review.
pubmed:affiliation
Departamento de Biotecnologia, Faculdade de Engenharia Química de Lorena, SP, Brazil. scoliv@debiq.faenquil.br
pubmed:publicationType
Journal Article, Review, Research Support, Non-U.S. Gov't