Comparative studies of the effect of ZnCl2-activated pawpaw seeds and H3PO4-activated pawpaw seeds adsorbent dosage and pH on the adsorption of malachite green
FS Omeiza, SA Egu, LO Abuh
The present study was undertaken to compare the effect of adsorbent dosage and pH on adsorption effectiveness of ZnCl2-activated pawpaw seeds (ZAPS) and H3PO4-activated pawpaw Seeds (HAPS) based granulated activated carbon in removing Malachite Green (MG). The capacity of ZAPS and HAPS adsorbents prepared to adsorb MG from aqueous solution at different pH values (2.0-10.0) and adsorbent dosage (0.50-2.50 g) were monitored using batch mode. The effects of agitation time, adsorbent dosage and pH were examined in each case. The findings shows that at different adsorbent dosages and pH values, ZAPS is a better adsorbent than HAPS.