Initial Conc 2 mg/l

Adsobent Dosage C q Sorption%0.1 0.821 1.179 58.950.2 0.634 0.683 68.30.4 0.419 0.39525 79.050.6 0.3 0.283333 850.8 0.297 0.212875 85.15

1 0.267 0.1733 86.65

0 0.2 0.4 0.6 0.8 1 1.250

55

60

65

70

75

80

85

90

Adsorbent Dosage in Grams

Sopr

tion%

Initial Concentration 2 mg/lpH C Removal %

2 0.764 61.83 0.75 62.54 0.63 68.55 0.62 696 0.54 737 0.49 75.58 0.3 85

8.5 0.363 81.859 0.531 73.45 1 2 3 4 5 6 7 8 9 10

505560657075808590

Sorption% of As(III) v/s pH

pH

Sorp

tion

%

Initial Conc 2 mg/lAdsorbent Dosage 0.6Time C Sorption%

15 1.35 32.530 0.934 53.345 0.54 7360 0.3 8575 0.297 85.1590 0.267 86.65

10 20 30 40 50 60 70 80 90 1000

102030405060708090

100

Sorption % of Cd v/s Time

Time in minutes

Sorp

tion%

Initial Conc 50

Ce (ppm)qe(mg/g) 1/qe 1/Ce log qe log Ce

0.25 12.3 15.08 0.066313 0.0813008 1.178401 1.0899050.5 6.8 8.64 0.1157407 0.1470588 0.936514 0.8325090.75 4.6 6.053333 0.1651982 0.2173913 0.781995 0.6627581 3.3 4.67 0.2141328 0.3030303 0.669317 0.5185141.25 3 3.76 0.2659574 0.3333333 0.575188 0.4771211.5 2.8 3.146667 0.3177966 0.3571429 0.497851 0.447158

Freundlich IsothermSlope 0.997859n 1.002146Intercept K 0.103321

Adsobent Dosage (g)

0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.40

0.050.1

0.150.2

0.250.3

0.35

f(x) = 0.83424890518269 x − 0.00926002394218981R² = 0.958429040784609

Langmuir Isotherm

1/Ce (L/mg)

1/qe

(g/m

g)

0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.40

0.050.1

0.150.2

0.250.3

0.35

f(x) = 0.83424890518269 x − 0.00926002394218981R² = 0.958429040784609

Langmuir Isotherm

1/Ce (L/mg)

1/qe

(g/m

g)

0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.20

0.20.40.60.8

11.21.4

f(x) = 0.997858859962797 x + 0.103320749014714R² = 0.982599780578803

Freundlich isotherm

Log Ce

Log

qe

Initial Conc 50 mg/l

Ce (ppm) qe(mg/g) lnCe

0.25 12.3 15.08 2.509599262378370.5 6.8 8.64 1.916922612182060.75 4.6 6.053333333333 1.526056303495051 3.3 4.67 1.193922468472431.25 3 3.76 1.098612288668111.5 2.8 3.146666666667 1.02961941718116

Adsobent Dosage (g)

0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.602468

10121416

f(x) = 7.64668249716742 x − 4.92848892413917R² = 0.973155484076375

Temkins Model

Log Ce

qe (m

g/g)

Initial Conc 50 mg/l

Ce (ppm) qe (mg/g) lnqe e e^2

0.25 12.3 15.08 1.178401 196.9082 38772.820.5 6.8 8.64 0.936514 345.6291 119459.50.75 4.6 6.053333 0.781995 495.5412 2455611 3.3 4.67 0.669317 666.7981 444619.71.25 3 3.76 0.575188 724.712 525207.51.5 2.8 3.146667 0.497851 769.2997 591822.1

beta= -1.077162E-06

E 681.30972821 J0.6813097282 KJ

Adsobent Dosage (g)

0 200000 400000 600000 8000000

0.20.40.60.8

11.21.4

f(x) = − 1.07716150403134E-06 x + 1.12606071764936R² = 0.93784053132429

D-R Model

e^2

Log

qe

Initial Conc 50 mg/l

0.25qe 18.01

Time (min) Ct qt qe-qt log(qe-qt)0 50 0 18.01 1.255513715 30.1 7.96 10.05 1.00216606

10 26.5 9.4 8.61 0.9350031515 22.6 10.96 7.05 0.8481891220 15.8 13.68 4.33 0.636487925 15.4 13.84 4.17 0.6201360530 12.2 15.12 2.89 0.4608978435 10.2 15.92 2.09 0.3201462940 8.6 16.56 1.45 0.16136845 6.8 17.28 0.73 -0.136677150 6.9 17.24 0.77 -0.113509355 6.6 17.36 0.65 -0.187086660 5.8 17.68 0.33 -0.4814861 Slope -0.03530465 5.2 17.92 0.09 -1.0457575 k 0.0153370 5.2 17.92 0.09 -1.045757575 5.1 17.96 0.05 -1.3010380 5 18 0.01 -2859095

100105110115120

Adsorbent Dosage

0 10 20 30 40 50 60 70 80 90 100

-2.5-2

-1.5-1

-0.50

0.51

1.5f(x) = − 0.0353039120472542 x + 1.40795671897718R² = 0.942890114261403

Psuedo First order Adsorption Model

Time in minutes

log(

qe-q

t)

Initial Conc 50 mg/lAdsorbent Dosage 0.25

Time C qt t/qt0 50 0 #DIV/0!5 30.1 7.96 0.628141

10 26.5 9.4 1.0638315 22.6 10.96 1.36861320 15.8 13.68 1.46198825 15.4 13.84 1.80635830 12.2 15.12 1.984127 slope35 10.2 15.92 2.198492 intercept40 8.6 16.56 2.415459 qe45 6.8 17.28 2.604167 k50 6.9 17.24 2.90023255 6.6 17.36 3.16820360 5.8 17.68 3.39366565 5.2 17.92 3.62723270 5.2 17.92 3.9062575 5.1 17.96 4.17594780 5 18 4.444444

0 10 20 30 40 50 60 70 80 900

1

2

3

4

5

f(x) = 0.0483613902253602 x + 0.516337693074238R² = 0.996939277757407

Psuedo Second Order Adsorption Model

Time in Minutes

t/qt

0.5160.048

1.937984 mg/g78.2455 min-1

Initial Conc 50 mg/lAdsorbent Dosage 0.25qe 18.01Time t^0.5 Ct qt

0 0 50 05 2.236068 30.1 7.96

10 3.162278 26.5 9.415 3.872983 22.6 10.9620 4.472136 15.8 13.6825 5 15.4 13.8430 5.477226 12.2 15.1235 5.91608 10.2 15.9240 6.324555 8.6 16.5645 6.708204 6.8 17.2850 7.071068 6.9 17.2455 7.416198 6.6 17.3660 7.745967 5.8 17.68 Slope 1.87703765 8.062258 5.2 17.92 Kp 1.87703770 8.3666 5.2 17.9275 8.660254 5.1 17.9680 8.944272 5 18

1 2 3 4 5 6 7 8 9 1002468

101214161820

f(x) = 1.53429207788652 x + 5.76474426033194R² = 0.912794122864997

Intraparticle Diffusion Model

Time Function

qt