Evaluating solubility, aggregation and sorption of nanosilver particles and silver ions in soils
Engineered nanoparticles (ENPs) are used in so many different products. ENPs are released into different environmental compartments. Silver nanoparticle (AgNP) is one of the most used ENPs. AgNPs may cause damage to the environment due to their toxicity and wide exposure. In this thesis possible...
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| Formato: | Second cycle, A2E |
| Lenguaje: | Inglés Inglés |
| Publicado: |
2011
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| Acceso en línea: | https://stud.epsilon.slu.se/2358/ |
| _version_ | 1855570422349692928 |
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| author | Geranmayeh Oromieh, Aidin |
| author_browse | Geranmayeh Oromieh, Aidin |
| author_facet | Geranmayeh Oromieh, Aidin |
| author_sort | Geranmayeh Oromieh, Aidin |
| collection | Epsilon Archive for Student Projects |
| description | Engineered nanoparticles (ENPs) are used in so many different products. ENPs are released
into different environmental compartments. Silver nanoparticle (AgNP) is one of the most
used ENPs. AgNPs may cause damage to the environment due to their toxicity and wide
exposure. In this thesis possible exposure ways of AgNPs to the environment was reported.
Also sorption-solubility and aggregation of AgNPs and AgNO3 based on the different
concentration of Ag and pH function in clayey and sandy soil was investigated.
Results showed that sorption of both silver nanoparticles and silver ions by the soils were
increased with increasing pH. Silver (nano/ion) sorption ratio in clayey treatment was slightly
higher than sandy one. It can be due to having higher CEC value and finer texture in clay in
comparison with sand. Partitioning between nanosilver and free silver ions was investigated
by help of ultrafiltration. It can be concluded that a significant fraction of the silver
nanoparticles were oxidized and transformed to free Ag+ during the oxic experimental
conditions.
The aggregation of AgNPs and silver ions was investigated based on the different
concentration of silver in a constant pH. Aggregation of silver nanoparticulate by help of
SEM and XRD were identified in 2.5 ppm concentration of AgNPs in sandy soil. No
aggregation was found at low concentration of silver nanoparticles. No silver aggregated spot
could be recognized at 6.7, 0.65 and 0.05 ppm concentration of silver in silver nitrate polluted
soil samples. |
| format | Second cycle, A2E |
| id | RepoSLU2358 |
| institution | Swedish University of Agricultural Sciences |
| language | Inglés Inglés |
| publishDate | 2011 |
| publishDateSort | 2011 |
| record_format | eprints |
| spelling | RepoSLU23582012-10-06T15:50:17Z https://stud.epsilon.slu.se/2358/ Evaluating solubility, aggregation and sorption of nanosilver particles and silver ions in soils Geranmayeh Oromieh, Aidin Soil science and management Soil chemistry and physics Pollution Engineered nanoparticles (ENPs) are used in so many different products. ENPs are released into different environmental compartments. Silver nanoparticle (AgNP) is one of the most used ENPs. AgNPs may cause damage to the environment due to their toxicity and wide exposure. In this thesis possible exposure ways of AgNPs to the environment was reported. Also sorption-solubility and aggregation of AgNPs and AgNO3 based on the different concentration of Ag and pH function in clayey and sandy soil was investigated. Results showed that sorption of both silver nanoparticles and silver ions by the soils were increased with increasing pH. Silver (nano/ion) sorption ratio in clayey treatment was slightly higher than sandy one. It can be due to having higher CEC value and finer texture in clay in comparison with sand. Partitioning between nanosilver and free silver ions was investigated by help of ultrafiltration. It can be concluded that a significant fraction of the silver nanoparticles were oxidized and transformed to free Ag+ during the oxic experimental conditions. The aggregation of AgNPs and silver ions was investigated based on the different concentration of silver in a constant pH. Aggregation of silver nanoparticulate by help of SEM and XRD were identified in 2.5 ppm concentration of AgNPs in sandy soil. No aggregation was found at low concentration of silver nanoparticles. No silver aggregated spot could be recognized at 6.7, 0.65 and 0.05 ppm concentration of silver in silver nitrate polluted soil samples. 2011-03-15 Second cycle, A2E NonPeerReviewed application/pdf eng https://stud.epsilon.slu.se/2358/1/geranmayeh_oromieh_a_110315.pdf Geranmayeh Oromieh, Aidin, 2011. Evaluating solubility, aggregation and sorption of nanosilver particles and silver ions in soils. Second cycle, A2E. Uppsala: (NL, NJ) > Dept. of Soil and Environment <https://stud.epsilon.slu.se/view/divisions/OID-435.html> urn:nbn:se:slu:epsilon-8-1018 eng |
| spellingShingle | Soil science and management Soil chemistry and physics Pollution Geranmayeh Oromieh, Aidin Evaluating solubility, aggregation and sorption of nanosilver particles and silver ions in soils |
| title | Evaluating solubility, aggregation and sorption of nanosilver particles and silver ions in soils |
| title_full | Evaluating solubility, aggregation and sorption of nanosilver particles and silver ions in soils |
| title_fullStr | Evaluating solubility, aggregation and sorption of nanosilver particles and silver ions in soils |
| title_full_unstemmed | Evaluating solubility, aggregation and sorption of nanosilver particles and silver ions in soils |
| title_short | Evaluating solubility, aggregation and sorption of nanosilver particles and silver ions in soils |
| title_sort | evaluating solubility, aggregation and sorption of nanosilver particles and silver ions in soils |
| topic | Soil science and management Soil chemistry and physics Pollution |
| url | https://stud.epsilon.slu.se/2358/ https://stud.epsilon.slu.se/2358/ |