Detail publikace

The interaction of tin-catalysts with soils

DOLEŽALOVÁ WEISSMANNOVÁ, H. NEJEDLÝ, T. DUŠKOVÁ, K.

Originální název

The interaction of tin-catalysts with soils

Typ

abstrakt

Jazyk

angličtina

Originální abstrakt

The ability of pollution prediction by environmental hazardous and toxic metals via modelling experiment is necessarily for environmental modelling. Due to a wide industrial utilization of tin and its compounds, mainly organotin compounds are widely used in PVC stabilization, production of catalysts, wood preservatives, antifouling paint, and biocides, the catalyst stannous-2-ethylhexanoate was selected for this study. The stannous-2-ethylhexanoate (Sn(Oct)2) is the most commonly used catalysts/initiators for preparing biodegradable and biocompatible polymers. The first part of this contribution deals with influence of the purification by various solvent after preparation of the "crude" PLGA/PEG//PLGA and ITA-PLGA/PEG/PLGA-ITA polymers. The processes of purification have a strong affect on the total content of tin in different matrices. The next part of this work includes the sorption study of tin-catalysts owing to presence of the tin in the waste after preparation of polymers. The different montmorillonites with known chemical and structural properties were used for the sorption study as model soil matrices. It is generally known that the sorption mechanism is not well understood because Sn(II) could be easily oxidised into Sn(IV) and the tin(II) form is influenced by hydrolysis reactions, too. The adsorbing amount can be expressed as total adsorbing amount of tin at the exactly defined conditions. The "Batch" method was used for the adsorption study. The adsorption data confirmed strong influence of pH factor, concentration of chlorides, type of sorbents and form of tin (inorganic and organic forms). The tin concentrations were determined by means of instrumental method ICP - OES and a spectrophotometric method.

Klíčová slova

tin, caltalysts, sorption, purification

Autoři

DOLEŽALOVÁ WEISSMANNOVÁ, H.; NEJEDLÝ, T.; DUŠKOVÁ, K.

Rok RIV

2007

Vydáno

10. 10. 2007

Nakladatel

MESEAP

Místo

MESAEP, Sevilla, ES

ISBN

978-84-8474-214-2

Kniha

Book of Abstract of the 14th Symposium on Environmental Pollution and its Impact on Life

Edice

1

Číslo edice

1

Strany od

106

Strany do

107

Strany počet

2

BibTex

@misc{BUT61070,
  author="Helena {Doležalová Weissmannová} and Tomáš {Nejedlý} and Kateřina {Dušková}",
  title="The interaction of tin-catalysts with soils",
  booktitle="Book of Abstract of the 14th Symposium on Environmental Pollution and its Impact on Life",
  year="2007",
  series="1",
  edition="1",
  pages="106--107",
  publisher="MESEAP",
  address="MESAEP, Sevilla, ES",
  isbn="978-84-8474-214-2",
  note="abstract"
}