diplomsko delo
Sandra Verbič (Author), Marjetka Suhadolc (Mentor)

Abstract

V 80. letih prejšnjega stoletja so prepovedali uporabo organskih onesnažil imenovanih poliklorirani bifenili (PCB), kljub temu se slednji še vedno pojavljajo v okolju in negativno vplivajo na ekosisteme in zdravje ljudi. Usodo PCB v tleh določajo naslednji procesi: vezava na talne delce, razgradnja in prenosi (izhlapevanje, sedimentacija, asimilacija idr.). Najbolj znane tehnike bioremediacije tal onesnaženih s PCB so fitoremediacija, rizoremediacija in mikoremediacija. Cilj je najti najbolj učinkovito biološko metodo remediacije oziroma kombinacijo več tehnik s katerimi bi uspeli zmanjšati čimbolj vsebnost PCB v tleh. Raziskati je potrebno kateri organizmi so najbolj uspešni pri razgradnji PCB v tleh in kaj lahko storimo, da procese bioremediacije pospešimo. Če povzamemo literaturo, lahko z bioremediacijo v obdobju 6-ih mesecev odstranimo več kot 50% PCB začetne vsebnosti. V kombinaciji različnih združb organizmov (rastline, bakterije, glive) pa lahko v istem času odstranimo tudi več kot 80% PCB. Z bioremediacijo praviloma ne posegamo v osnovno sestavo okolja. S problemom previsokih vsebnosti PCB v tleh se srečujemo tudi v Sloveniji, zato je vredno najti učinkovite rešitve, ki bi prispevale k zmanjšanju onesnaženja okolja v naši bližini.

Keywords

poliklorirani bifenili;fitoremediacija;čiščenje tal;rizoremediacija;mikroremediacija;onesnaženost tal;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL BF - Biotechnical Faculty
Publisher: [S. Verbič]
UDC: 502.174:631.46:504.431.46(043.2)
COBISS: 126002691 Link will open in a new window
Views: 24
Downloads: 9
Average score: 0 (0 votes)
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Other data

Secondary language: English
Secondary title: Remediation of PCB-contaminated soils
Secondary abstract: In the 1980s, the use of organic pollutants called polychlorinated biphenyls (PCBs) was banned, but they are still present in the environment and have negative effects on ecosystems and human health. The fate of PCBs in soil is determined by the following processes: adsorption to soil particles, degradation and transport (evaporation, sedimentation, assimilation, etc.). The best known techniques for bioremediation of PCB-contaminated soils are phytoremediation, rhizoremediation and mycoremediation. The aim is to find the most effective bioremediation method, or a combination of several techniques, to reduce PCB levels in soil to a minimum. It is necessary to investigate which organisms are most successful in degrading PCBs in soil and what can be done to accelerate the bioremediation processes. To summarise the literature, bioremediation can remove more than 50% of PCBs of the initial concentration in a period of 6 months. In combination, different communities of organisms (plants, bacteria, fungi) can remove more than 80% of PCBs in the same period of time. As a rule, bioremediation does not interfere with the basic composition of the environment. The problem of PCBs in soil is also a problem in Slovenia, and it is worth finding effective solutions to reduce pollution in our neighbourhood.
Secondary keywords: soil pollution;polychlorinated biphenyls;phytoremediation;rhizoremediation;mycoremediation;
Type (COBISS): Bachelor thesis/paper
Study programme: 0
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Biotehniška fak., Oddelek za agronomijo
Pages: 1 spletni vir (1 datoteka PDF (VI, 17 f.))
ID: 16542980