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2017, vol. 6, br. 2, str. 67-71
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Uklanjanje tekstilne bazne boje iz vodenog rastvora uz pomoć prirodnog zeolita
The removal of the textile basic dye from the water solution by using natural zeolite
aUniverzitet u Nišu, Tehnološki fakultet, Leskovac, Srbija bFaculty of Technology and Metallurgy, Skopje, Macedonia
e-adresa: amingoran85@gmail.com
Sažetak
U radu je istraživana primena prirodnog zeolita za eliminaciju tekstilne bazne boje iz vodenog rastvora. Praktično je rađena simulacija prečišćavanja otpadne vode iz tekstilne industrije. Zeolit je okarakterisan fizičkom i hemijskom analizom. U hemijskom sastavu adsorbenta dominira SiO2, zatim slede Al2O3, CaO, Fe2O3, K2O. Korišćeni prirodni adsorbent-zeolit je relativno fino rasuti materijal sa heterogenim poroznim česticama, generalno, veličine ispod 45 μm. Istraživan je uticaj početne koncentracije boje, pH i vremena mešanja na adsorpciju. Kod nižih koncentracija, javlja se veći procenat uklonjene boje, ali posmatrano generalno, veća količina boje je adsorbovana na zeolit kod viših početnih koncentracija. Duže vreme adsorpcije pri višim početnim koncentracijama proizvodi veću količinu boje adsorbovane na adsorbentu. Rezultati potvrđuju da svi varirani ulazni parametri utiču na efikasnost adsorpije bazne boje, kao i da je primenjeni prirodni zeolit, kao adsorbent, ispunio očekivanja s obzirom na nivo obojenosti posle adsorpcije (količina uklonjene boje >82% pri pH 4).
Abstract
The use of natural zeolite for elimination of the textile basic dye from the water solution was researched in this paper. The practical simulation of purification of waste water from the textile industry was done. Zeolite was characterized by physical and chemical analysis. SiO2 dominates the chemical structure of the adsorbent, followed by: Al2O3, CaO, Fe2O3, K2O. The used natural adsorbent - zeolite is a relatively fine bulk material with heterogenic porous particles, generally smaller than 45 μm. The effect of the initial dye concentration, pH and mixing time was investigated. In lower concentrations, the percentage of the removed dye is higher, but generally observed, a larger amount od dye is absorbed onto zeolite at higher initial concentrations. Longer adsorption time with a higher initial concentration results in a larger amount of the dye adsorbed by the adsorbent. The results confirm that all varied input parameters influence the efficiency of the basic dye adsorption and that the used natural zeolite, as adsorbent, has fulfilled the expectations considering the dye level after adsorption (the amount of the removed dye >82% at pH 4).
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