20.500.12556/DKUM-67773 Primerjava postopkov predčiščenja odpadne vode pred vstopom v reverzno osmozo Comparison of pre-treatment processes of waste water prior to entering the reverse osmosis Kompostna voda vsebuje veliko organskih snovi, saj je eden izmed stranskih produktov pri postopku razgradnje organskih odpadkov. Čiscenje odpadnih voda je zato eden izmed pomembnejših procesov iz razvojne in ekološke perspective. Vsoto organskih snovi v vodi smo določili kot: kemijsko potrebo po kisiku (KPK). Za postopke predčiščenja smo uporabili čiščenje z nanodelci (srebrovi nanodelci AgNPs) in čiščenje z zeolitom (zeolit ZSM-5 Silicalite). Srebrove nanodelce (AgNPs) smo sintetizirali iz natrijevega alginata raztopljenega v destilirani vodi, kateremu smo dodali srebrov nitrat (AgNO3). Za predčiščenje z zeolitom smo uporabili zeolit ZSM-5 Silicalite, ki je nastal po postopku granulacije. Po izvedbi postopkov čiščenja smo opravili analize in tako določili, kateri postopek je bolj uporaben. Po predčiščenju smo vodo čistili še z reverzno osmozo pri različnih tlakih (10, 15, 20, 30 in 40 barih) in ugotavljali, kateri postopek predčiščenja zniža mašenje membrane. Rezultati so pokazali, da je postopek predčiščenja z nanodelci učinkovitejši, saj opazimo manjše mašenje membrane kot pri predčiščenju z zeolitom. Compost leachate contains many organic substances since it is the by-product in the process of decomposing organic waste. Therefore, purification of the waste water is important area to study in order to ensure more environmental friendly and sustainable processes. In the thesis, we analyzed water treatment with reverse osmosis. The sum of organic substances was measured as Chemical Oxigen Demand (COD). Purification with nanoparticles (silver nanoparticles AgNPs) and zeolite purification (zeolite ZSM-5 Silicalite) were used as pre-purification procedures. Silver nanoparticles (AgNPs) were synthesized from sodium alginate dissolved in distilled water, to which silver nitrate (AgNO3) was added. Zeolite ZSM-5 Silicalite, which was formed by the granulation process, was also used as pretreatment adsorbent. After pre-treatment, the water was treated with a reverse osmosis at various pressures (10, 15, 20, 30 and 40 bars) and optimal pre-purification procedure was determined regarding membrane fouling. After the experiment was carried out, analyzes were made to determine which pre-treatment procedure was more useful.The results showed that the pre-treatment with nanoparticles is more effective as less membrane clogging was observed than with pre-treatment with zeolite. kompostna voda srebrovi nanodelci mikrovalovna sinteza predčiščenje reverzna osmoza compost leachate silver nanoparticles microwave-assisted synthesis pre-treatment reverse osmosis true true false [M. Brečko] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2017-08-30 14:11:49 2017-09-28 13:02:21 2022-08-01 14:26:06 2019-07-11 16:30:58 2017 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 628.336.8(043.2) 21058582 URN:SI:UM:DK:8LOKSTHJ UN_Brecko_Medea_2017.pdf UN_Brecko_Medea_2017.pdf 1 A7FD07BBAFDEE8C654AE2AB0ADBE61EA f767d16d92482ba429f520b92c0374af6edbbebef067753bd2f6027ad4391519 467b6150-7c0f-11eb-bb7a-00155d0001ca 20.500.12556/dkum/de3f890f-10b0-4bf0-87e3-a2c93760f2e5 https://dk.um.si/Dokument.php?lang=slv&id=118227 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0