ADSORPTIVE REMOVAL OF Cr(VI) AND Al(III) FROM AQUEOUS SOLUTION BY SUGARCANE BIOMASS

8/9/2019 ADSORPTIVE REMOVAL OF Cr(VI) AND Al(III) FROM AQUEOUS SOLUTION BY SUGARCANE BIOMASS

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Cr(VI) AND Al(III) FROMAQUEOUS SOLUTION BYSUGARCANE BIOMASS

Paramatma MishraTri-Chandra Multiple Campus

Tribhuvan University

Dr. Deba Bahadur Khadka Central Department of Chemistry,

Tribhuvan University1


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Presentati n !tlineIntroduction

Experimental

Results and discussion

Conclusion

Acknowledgement

2


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Adsorption: A surface phenomenon effectively used forremoving metal ion from waste water

Techniques like recipitation! ion exchange! reverse osmosis!solvent extraction etc are economically expensive with

incomplete metal removal"Agricultural waste#rice husk! sugarcane $agasse! mai%e $ran!lapsi seeds! apple waste and many more& can $e thealternative! economically cheap and eco'friendly adsor$ent

3

Intr "!#ti n


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b!e"tives of the study

To prepare! modify and characteri%e low cost adsor$ent"

To compare adsorption capacity of raw and modified

adsor$ent

To investigate effect of p(! contact time and initial

concentration of metal ion"

To study the nature of adsorption isotherm and adsorption

kinetics

4


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M "i$e" %aterial

C n # &

' S

O

Sa##*ar!%+#inar!%

,as*e" -.rin"e"

Grin"e"

C * a r r i n .

5

E/0eri%ental1 Pre0arati n 2A"s r3ent

Chemical treatment improves adsorption capacity to greater extentthan untreated adsorbent


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Effect of chemical treatment

6


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Characteri%ation of the adsor$ent

)urface area #*ET technique&

)E+ image

IR spectra

7


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*atch p( study

,ifferent sets of constant Cr#-I& . Al#III& solution with

p( /'/0 each containing 12 mg of adsor$ent were shaken

in mechanical shaker"

3ptimum p( of Cr#-I& and Al#III& were determined"

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*atch isotherm study

Cr#-I& . Al#III& solutions of concentration /0 to 400mg56 each containing 12 mg of adsor$ent at their

respective optimal p( were shaken in mechanical

shaker"

*oth 6angmuir and 7reundlich isotherms were used

to descri$e adsorption $ehaviour

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Bat#* 4ineti#s st!"5,ifferent sets of constant Cr#-I& . Al#III& solution each

containing 12 mg of adsor$ent at their respective optimal p(

were shaken for time /0! 10! 80! 40! 20! 90! 0! ;0!


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#$M ima%e of ra& ' modified ba%asse

!a"bagasse

#odi$edbagasse


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IR spectra of raw . modified $agasse

!a" bagasse

#odi$edbagasse

12

!a"%agasse

#odi$ed%agasse


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(ma) for Cr*+

/0 10 20 /30 /40 //0 /10 /20 5300

0.06

0.0

0.05

0.070.3

8 b s o r b a n " e

9avelen%th

(ma) :/ 0nm

13


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(ma) for 8l*

/0 10 20 /30 /40 //0 /10 /200

0.3

0.6

0.4

0.

8 b s o r b a n " e

9avelen%th

(ma) : /40nm

14


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0 3 6 4 / 5 10

60

0

50

70

300

!&C%#&C%

; a

d s o r p t

i o n

0'

$ffe"t of p< on Cr*+ removal

15


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0 3 6 4 / 5 10

60

050

70

300

!&C%#&C% ;

a d s o r p

t i o n

preundli"h adsorption isotherm for Cr*+

2


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0 /0 300 3/0 600 6/0 4000

0./

3

3./

6

6./'(x) * + 1x , +18!- * +99

'(x) *!- *

!&C%.inear (!&C%)#&C%.inear (#&C%) #

e

: 9 e

( .

: L )

# e (%.:L)

RSCB

MSCB

=an%muir adsorption isotherm for 8l*

21


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0 /0 300 3/0 600 6/0 400 4/00

30

60

40

0

'(x) * + 4x , 4+21!- * +97

'(x) * + 7x , 8+96!- * +87 !&C%

.inear (!&C%)#&C%.inear (#&C%)

t : 9

t

( % i n : % . : .

)

Ti%e(%in)

MSCB

RSCB

Pseudo-se"ond order kineti"s for the adsorption of 8l*

24


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= removal of Cr#-I& . Al#III& depend upon p(! contacttime and initial concentration of the metal ion

At p( /"0 maximum adsorption capacity for Cr#-I& foundto $e /8/mg5g #+)C*& and 1 mg5g#R)C*&

Contact time for Cr#-I& was found to $e 8 hours

At p( 9"0 maximum adsorption capacity for Al#III& foundto $e /12mg5g#+)C*& and 84mg5g#R)C*&

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Con"lusion


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Contact time 'or /l(000) "as 'ound to be 2 hours

.angmuir isotherm 'ound to be best $tted

seudo second order inetics model gave thebetter $t to the experimental data

ence sugarcane bagasse can be used as analternative adsorbent "ith very high e ciencyo' removal o' Cr( 0) and /l(000)

26

Con"lusion*"ontd.


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A#4n ;le".e%ent

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,epartment 3f ChemistryTri'Chandra +ultiple Campus

,r" ,e$a *ahadur >hadkaCentral ,epartment 3f Chemistry

Tri$huvan ?niversity

@epal Academy of )cience .Technology # ?8#T & >humaltar! 6alitpur


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ADSORPTIVE REMOVAL OF Cr(VI) AND Al(III) FROM AQUEOUS SOLUTION BY SUGARCANE BIOMASS