Sorpcija febantela na prirodno tlo i sediment

undergraduate thesis

• Title (english): Sorption of febantel onto natural soil and sediment
• Author: Iva Karačić
• Mentor: Dragana Mutavdžić Pavlović (mentor)
• Committee member: Dragana Mutavdžić Pavlović (predsjednik povjerenstva)
• Committee member: Tatjana Gazivoda Kraljević (član povjerenstva)
• Committee member: Mirta Čizmić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2016-09-13, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Chemistry; Analytic Chemistry

Abstract

U novije doba otpadni farmaceutici predstavljaju sve veću opasnost za okoliš te za zdravlje ljudi i životinja. Proces kojim se može doći do informacija o sudbini, utjecaju i transportu otpadnih farmaceutika u okolišu te time doprinijeti uklanjanju istih naziva se sorpcija. U ovom radu ispitan je proces sorpcije farmaceutski aktivne tvari febantela na prirodna tla i sedimente s područja Republike Hrvatske. Febantel se koristi kao veterinarski lijek te ima široku upotrebu u svijetu. U radu su... More ispitani mehanizam i kinetika sorpcije, utjecaj ionske jakosti te utjecaj pH. S ciljem određivanja mehanizma sorpcije primjenjeni su linearni, Freundlichov te Dubinin-Radushkevichev model izotermi pri čemu su eksperimentalni podaci pokazali najbolje slaganje s linearnim modelom (R^2>0,99), dok je kinetičkim modelom pseudo-drugog reda najbolje opisana brzina sorpcije. Najviše vrijednosti koeficijenta sorpcije pokazuje uzorak tla Josipovac i uzorak sedimenta Glina, dok najniže vrijednosti pokazuju uzorak tla Gračac te uzorak sedimenta Birovača. Ispitivanjem utjecaja ionske jakosti i pH uočava se trend povećanja koeficijenta sorpcije (Kd) sa smanjenjem ionske jakosti otopine, kao i sa smanjenjem pH vrijednosti otopine. Less

Abstract (english)

Recently, waste pharmaceuticals represent an increasing danger for the environment as well as for the human and animal health. The process by which you may get information about the fate, the impact and transport of waste pharmaceuticals in the environment and thus contribute to removing them is called sorption. In this study, the subject of examination was the process of sorption of the pharmaceutically active agent febantel on natural soils and sediments from the Croatian teritory.... More Febantel is used as a veterinary medicine worldwide. In this study, the mechanism and kinetics of sorption, the impact of ionic strenght and the influence of pH are examined. In order to determine the sorption mechanisms, linear, Freundlich and Dubinin- Radushkevich isotherm model are applied. Experimental data showed the best agreement with the linear model (R^2>0,99), while the rate of sorption is the best described with the kinetic model of pseudo-second-order. The highest values of the coefficient of sorption (Kd) shows a sample of soil Josipovac and sample of sediment Glina, while the lowest values indicate a soil Gračac and sediment Birovača. In the results obtained by examing the influence of ionic strength and pH, there is a noticable trend of increasing sorption coefficient with decreasing ionic strength and pH of the solution. Less

• Keywords: febantel; tlo; sediment; sorpcija; koeficijent sorpcije; ionska jakost; pH
• Keywords (english): febantel; soil; sediment; sorption; coefficient of sorption; ionic strength; pH
• Language: croatian
• URN:NBN: urn:nbn:hr:149:724025
• Study programme: Title: Applied Chemistry - Undergraduate study; specializations in: Environmental chemistry and green technologies, Advanced materials and technologies, Applied organic chemistry; Course: Environmental chemistry and green technologies; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) primijenjene kemije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) primijenjene kemije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2018-02-05 12:03:04