Uklanjanje boje bemacid red adsorpcijom na piljevini i karbonizovanoj piljevini
DOI:
https://doi.org/10.5937/zasmat2301065DKljučne reči:
bemacid red, adsorpcija, drvna piljevina, karbonizovana piljevinaApstrakt
Ogromne količine obojene otpadne vode, ispuštene u ekosisteme danas predstavljaju veliki problem, jer imaju štetne efekte na čoveka, životnu i vodenu sredinu. Jedan od postupaka uklanjanja boja iz otpadnih voda jeste proces adsorpcije, sa naglaskom na upotrebu jeftinih adsorbenata. Zbog toga je i tematika ovog rada mogućnost uklanjanja anjonske boje bemacid red (BR) na piljevini drvne biomase i karbonizovanoj piljevini. Provedenim eksperimentima ispitano je ravnotežno vrijeme kontakta, uticaj pH vrijednosti, zavisnost adsorpcije od mase adsorbenta, kao i zavisnost adsorpcije od početne koncentracije adsorbata. Primjenom linearnih kinetičkih modela ustanovljeno je da proces adsorpcije prati kinetički model pseudo drugog reda. Adsorpcija na karbonizovanoj piljevini ne pokazuje značajniju zavisnost od pH vrijednosti. Ispitivanjem zavisnosti adsorpcije od početne mase adsorbenta ustanovljeno je da je za optimalnu adsorpciju potrebna duplo veća masa piljevine u odnosu na karbonizovanu piljevinu. Primjena linearnih adsorpcionih izotermi pokazuje bolje slaganje sa Freundlichovim modelom za oba adsorbensa. Maksimalni kapacitet adsorpcije za piljevinu iznosi 30.18 mg/kg, dok je za karbonizovanu piljevinu 74.60 mg/kg. Dobijeni rezultati pokazuju da primjena piljevine i karbonizovane piljevine može biti efikasan adsorbens za uklanjanje boje bemacid red iz otpadnih voda, što je i potvrđeno na realnom uzorku otpadne vode. Dobijena efikasnost uklanjanja boje iz realnih otpadnih voda, dobijene nakon bojenja poliamidne tkanine bojom bemacid red, za piljevinu iznosi 42.9 %, a za karbonizovanu piljevinu 95.1 %.Reference
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