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Original scientific paper

Physical and chemical modification of lignocellulosic waste biomass-tool for improving sorption capacity

By
Zorica Lopičić ,
Zorica Lopičić
Contact Zorica Lopičić

Institute for Technology of Nuclear and other Mineral Raw Materials , Belgrade , Serbia

Tatjana Šoštarić ,
Tatjana Šoštarić

Institute for Technology of Nuclear and other Mineral Raw Materials , Belgrade , Serbia

Jelena Milojković ,
Jelena Milojković

Institute for Technology of Nuclear and other Mineral Raw Materials , Belgrade , Serbia

Marija Mihajlović ,
Marija Mihajlović

Institute for Technology of Nuclear and other Mineral Raw Materials , Belgrade , Serbia

Jelena Petrović ,
Jelena Petrović

Institute for Technology of Nuclear and other Mineral Raw Materials , Belgrade , Serbia

Ivan Antanasković ,
Ivan Antanasković

Investfarm-Impex doo , Beograd , Serbia

Mirjana Stojanović
Mirjana Stojanović

Institute for Technology of Nuclear and other Mineral Raw Materials , Belgrade , Serbia

Abstract

The  main  constituents  of  ligno-cellulosic  (LC)  biomass  are  lignin,  celluloses  and  hemicelluloses,  complex polymers with  many  functional  groups,  which  can be modified with  the  purpose  to  improve the  sorption properties  of  the  starting  material.  This  paper  presents  several  physical  and  chemical  modifications applied  to  LC  biomass  of  peach  stones  (Prunus  persica  L.),  abundant  waste  from  food  industry.  These stones  were  firstly  mechanically  activated  in  two  mill  types,  and  then  by  different  chemicals.  Sorption experiments  were  performed  in  batch  reaction  system  with  stirring.  Cu(II)  sorption  kinetic  was  tested through three reaction kinetic models: pseudo-first order, pseudo-second order and Elovich equation. FT-IR analyses of chemically modified samples is alsopresented and discussed.

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Authors retain copyright. This work is made freely available online under an open-access model under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC-http://creativecommons.org/licenses/by-nc-nd/4.0/BY-NC-ND 4.0).

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