Lemon Juice and Microwave Assisted Modification of Date Seed Husk for Arsenic Biosorption
Lemon Juice and Microwave Assisted Modification of Date Seed Husk for Arsenic Biosorption
Tahira Moeen Khan*, Irum Riaz, Shahida Hameed and Bushra Khan
ABSTRACT
Arsenic poisoning and its removal from drinking water has become a serious issue now a days. For arsenic removal batch studies were conducted using low cost adsorbent (raw date seeds husk and lemon juice microwave activated date seeds husk) by taking 25ppm/50ml initial concentration of NaAsO2. Best removal (90%) was achieved for Lemon juice microwave activated date seed husk LMDS (time= 30mins, agitation speed= 150 rpm, pH= 5, adsorbent dose= 0.1 g). While 85% removal efficiency was observed for Raw date seed husk RDS (time= 45mins, agitation speed=250 rpm, pH= 4 and adsorbent dose= 0.5 g). The adsorption isotherms (Freundlich and Langmuir) and adsorption dynamic kinetic studies were also conducted. The comparison between the FTIR, EDX and SEM of RDS and LMDS revealed that with lemon juice microwave activation of adsorbent there were activation of more active sites which in turn increased the removal efficiency.
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