Keywords: cellulose fibres, adsorption, chemical modification, organic pollutants, column regeneration, ethanol, biopolymer adsorbents, water pollution, herbicides
Modified biopolymer adsorbent for the removal of dissolved organic pollutants
Chemically modified cellulose fibres were used as adsorbents for the removal of organic compounds and herbicides from water. The chemical modification of fibres by grafting hydrocarbon moieties enhances the adsorption capacity of cellulose substrate. The adsorption behaviour of the modified fibres towards various organic solutes and three herbicides was investigated. The viability of application of the modified cellulose fibres for the removal organic pollutant in continuous mode was confirmed by using column filled with modified fibres. Once exhausted, the column regeneration was accomplished by washing with ethanol. The regenerated column was used in several adsorption?desorption cycles without any loss of the adsorption capacity.