Water

pollution is a major

environmental

problem especially that

produced from

different industries,

which produce large amounts of

toxic

heavy metals to the soil and

wastewater;

these heavy metals

affect human health. This study was made to study

the

removal of one of these toxic heavy metals

which is Cr(VI) by ad

sorption technique

using

silica gel compound

3

-

Glycidoxypropyl

-

functionalized

silica

.

The adsorption exp

eriments were applied for a

range of pH

(2

-

13)

,

temperature, adsorbent dosage,

initial co

ncentration, and contact time.

The results

revealed

that

the percentage removal of Cr(VI)

decreased with the increase of Cr(VI) concent

ration, pH

and temperature, while the percentage

removal increase with increase contact time and adsorbent dose.

The removal efficiency for Cr(VI)

adsorption was more than 75% af

ter 24

hour this

achieved at pH

around 6, and temperature 25ºC, using 0.04g weight of dose, at initial concentration 10

ppm for 10

mL

Cr(VI) solution.

The adsorption of Cr(VI)

onto MSiTh was optimized under acidic conditions (pH<

7) at room

temperature

.

Ac

cording to pseudo second order the Cr(VI) sorption, the results achieved shows the

MSiTh is able to remove Cr(VI)within

20 min with high removal efficiency.

Title

Appl. J. Envir. En. Sci

Publisher

Appl. J. Envir. En. Sci

Publisher Country

Morocco

Indexing

Scopus

Impact Factor

None

Publication Type

Both (Printed and Online)

Volume

2

Year

2016

Pages

78-94