Lemon Juice and Microwave Assisted Modification of Date Seed Husk for Arsenic Biosorption
Tahira Moeen Khan*, Irum Riaz, Shahida Hameed and Bushra Khan
Department of Chemistry, Lahore College for Women University, Jail Road Lahore, 54000, Pakistan.
[email protected]
Figure 1
Overlay FTIR spectra of RDS and LMDS.
Scheme 1
Surface modification of RDS with lemon juice and microwave radiation.
Figure 2a
SEM image of RDS.
Figure 2b
SEM image of LMDS.
Figure 3a
EDX image of LMDS without arsenic.
Figure 3b
EDX image of LMDS with arsenic.
Figure 4a
Effect of shaking speed for Arsenic removal onto RDS and LMDS. Adsorbent dose= 0.3 g, Solution concentration (25 ppm / 50 mL), Contact time= 30 minutes.
Figure 4b
Effect of contact time for Arsenic removal onto RDS and LMDS. Adsorbent dose= 0.3 g, Shaking speed (RDS, LMDS= 250 rpm, 150 rpm), Solution concentration (25 ppm / 50 mL).
Figure 4c
Effect of adsorbent dose (g) on Arsenic removal onto RDS and LMDS. Shaking speed (RDS, LMDS= 250rpm, 150 rpm), Solution concentration (25 ppm / 50 mL), Time= 30 minutes.
Figure 4d
Effect of pH on lead removal onto RDS and LMDS. Adsorbent dose (RDS, LMDS= 0.3g), Shaking speed (RDS, LMDS= 250 rpm, 150 rpm), Solution concentration (25 ppm / 50m L), Time=30 minutes.
Figure 4e
Effect of temperature (K) on Arsenic removal onto RDS LMDS. Adsorbent dose = 0.3g, Shaking speed (RDS, LMDS = 250 rpm, 150 rpm), Solution concentration (25 ppm / 50m L), Time=30 minutes.
Figure 5
Thermodynamic study of RDS , LMDS.
Figure 6a
Langmuir 2 Isotherm for RDS, LMDS.
Figure 6b
Freundlich Isotherm for RDS, LMDS.
Figure 7a
Pseudo first order kinetics for (RDS, LMDS).
Figure 7b
Pseudo second-order kinetics for (RDS, LMDS).