Sorpcija metilenskog modrila na bisorbense: agrume

master's thesis

• Author: Sabina Erdeljac
• Mentor: Mirela Rožić (mentor)
• Committee member: Mirela Rožić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Graphic Arts; Zagreb
• Defense date and country: 2011-1-24, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Graphic Technology

Abstract

U ovom radu proučavana je sorpcija metilenskog modrila na nekonvekcionalne jeftine

biosorbense, agrume: naranču i limun. Upotrijebljeni su otpaci: kora, koštice i pulpa. Rezultati

su usporeñeni s rezultatima sorpcije na mineralnim sorbensima zeolitu klinoptilolitu, pyroloxu

i birmu. Ispitana je kinetika sorpcije i utjecaj pH vrijednosti na sorpciju metilenskog modrila

na korama naranče i limuna. Odreñene su i izoterme sorpcije na korama naranče i limuna te

na zeolitu. Eksperimentalni podaci ispitivanja kinetike sorpcije analizirani su uporabom dva

kinetička modela: model pseudo – prvog i model pseudo – drugog reda. Model pseudo –

drugog reda bolje opisuje kinetiku sorpcije metilenskog modrila na korama naranče i limuna.

Pri pH vrijednostima otopine bojila 2-3, sorpcija metilenskog modrila je nešto slabija nego

pri pH vrijednostima 3-6. U ispitivanom koncentracijskom području od 50 do 1000 mg/dm3

sorpcija metilenskog modrila na korama naranče i limuna je linearna uz efikasnost sorpcije

približno 100%. Kapacitet zeolita za metilensko modrilo je 20 mg/g3. Kapacitet sorpcije

otpadaka agruma kao biosorbensa za uklanjanje metilenskog modrila iz vodenih otopina, je

znatno veći u odnosu na mineralne sorbense (zeolit, pyrolox, birm).

Abstract (english)

This study examines the sorption of methylene blue on the cheap unconventional biosorbense,

citrus fruits: oranges and lemons. Wastes are used: peel, seeds and pulp. The results are

compared with results of sorption to mineral sorbents zeolite clinoptilolite, pyrolox and birm.

Sorption kinetics and the influence of pH on the sorption of methylene blue on orange and

lemon peel is examined. There were determined and sorption isotherms on orange and lemon

peel, and the zeolite. Experimental test data of sorption kinetics were analyzed using two

kinetic models: the model of pseudo - first order and pseudo - second order. Model pseudo -

second order better described the kinetics of sorption of methylene blue on orange and

lemon peel. When the pH of the solution dyes is 2-3, the sorption of methylene blue was

slightly weaker than at pH 3-6. In the studied concentration range 50-1000 mg/dm3 sorption

of methylene blue on orange and lemon peel is a linear, with sorption efficiency of

approximately 100%. The capacity of zeolite for methylene blue is 20 mg/g3. Sorption

capacity of citrus waste as biosorbens to remove methylene blue from aqueous solution, is

significantly higher than in the mineral sorbent (zeolite, pyrolox, birm).

• Keywords: biosorbens; kora naranče i limuna; metilensko modrilo; izoterme; kinetika
• Keywords (english): biosorbens; orange and lemon peel; methylene blue; sorption isotherms; kinetics
• Language: croatian
• URN:NBN: urn:nbn:hr:216:925399
• Study programme: Title: Graphic technology; specializations in: Graphic technology, Design of graphic products; Course: Graphic technology; Study programme type: university; Study level: graduate; Academic / professional title: sveučilišni/a magistar/magistra inženjer/inženjerka grafičke tehnologije (sveučilišni/a magistar/magistra inženjer/inženjerka grafičke tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2024-04-17 09:31:52