Abstract
Heulandite/polyaniline (HU/PANI) composite was prepared by mechanical mixing from natural heulandite and synthesized polyaniline. HU/PANI was characterized by XRD, SEM, TEM, FT-IR, and UV–Vis spectroscopy. The product is of polycrystalline nature with an average crystallite size of 25.7 nm and optical band gap of 1.69 eV. HU/PANI shows higher efficiency in the removal of light green SF dye than natural HU or PANI in the dark and under artificial illumination. The equilibrium time was attained after 360 and 480 min in the dark and under illumination, respectively. The results fitted well with pseudo second order and Elovich kinetic models. The adsorption isotherm in the dark fitted well with Langmuir isotherm model and the calculated qmax was 44.6 mg/g. Using illumination, the data fitted better with the Freundlich and Temkin model than with the Langmuir model. Based on response surface analysis, the predicted conditions for maximum removal of light green SF dye in the dark (70.9%) were 5.5 mg/L, 24 mg, 3, and 430 min for dye concentration, HU/PANI dose, pH, and contact time, respectively. Whereas, under light illumination (97%) at operating conditions of 15 mg/L, 15 mg, 3, and 589 min, respectively. The composite also shows high efficiencies in the removal of other types of acidic and basic dyes.
| Original language | English |
|---|---|
| Pages (from-to) | 2501-2511 |
| Number of pages | 11 |
| Journal | Advanced Powder Technology |
| Volume | 29 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 1 Oct 2018 |
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Keywords
- Characterization
- Isotherm modeling
- Kinetic studies
- Polyaniline/heulandite composite
- Response surface
ASJC Scopus subject areas
- Chemical Engineering(all)
- Mechanics of Materials
Cite this
Heulandite/polyaniline hybrid composite for efficient removal of acidic dye from water; kinetic, equilibrium studies and statistical optimization. / Abukhadra, Mostafa R.; Rabia, Mohamed; Shaban, Mohamed; Verpoort, Francis.
In: Advanced Powder Technology, Vol. 29, No. 10, 01.10.2018, p. 2501-2511.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Heulandite/polyaniline hybrid composite for efficient removal of acidic dye from water; kinetic, equilibrium studies and statistical optimization
AU - Abukhadra, Mostafa R.
AU - Rabia, Mohamed
AU - Shaban, Mohamed
AU - Verpoort, Francis
PY - 2018/10/1
Y1 - 2018/10/1
N2 - Heulandite/polyaniline (HU/PANI) composite was prepared by mechanical mixing from natural heulandite and synthesized polyaniline. HU/PANI was characterized by XRD, SEM, TEM, FT-IR, and UV–Vis spectroscopy. The product is of polycrystalline nature with an average crystallite size of 25.7 nm and optical band gap of 1.69 eV. HU/PANI shows higher efficiency in the removal of light green SF dye than natural HU or PANI in the dark and under artificial illumination. The equilibrium time was attained after 360 and 480 min in the dark and under illumination, respectively. The results fitted well with pseudo second order and Elovich kinetic models. The adsorption isotherm in the dark fitted well with Langmuir isotherm model and the calculated qmax was 44.6 mg/g. Using illumination, the data fitted better with the Freundlich and Temkin model than with the Langmuir model. Based on response surface analysis, the predicted conditions for maximum removal of light green SF dye in the dark (70.9%) were 5.5 mg/L, 24 mg, 3, and 430 min for dye concentration, HU/PANI dose, pH, and contact time, respectively. Whereas, under light illumination (97%) at operating conditions of 15 mg/L, 15 mg, 3, and 589 min, respectively. The composite also shows high efficiencies in the removal of other types of acidic and basic dyes.
AB - Heulandite/polyaniline (HU/PANI) composite was prepared by mechanical mixing from natural heulandite and synthesized polyaniline. HU/PANI was characterized by XRD, SEM, TEM, FT-IR, and UV–Vis spectroscopy. The product is of polycrystalline nature with an average crystallite size of 25.7 nm and optical band gap of 1.69 eV. HU/PANI shows higher efficiency in the removal of light green SF dye than natural HU or PANI in the dark and under artificial illumination. The equilibrium time was attained after 360 and 480 min in the dark and under illumination, respectively. The results fitted well with pseudo second order and Elovich kinetic models. The adsorption isotherm in the dark fitted well with Langmuir isotherm model and the calculated qmax was 44.6 mg/g. Using illumination, the data fitted better with the Freundlich and Temkin model than with the Langmuir model. Based on response surface analysis, the predicted conditions for maximum removal of light green SF dye in the dark (70.9%) were 5.5 mg/L, 24 mg, 3, and 430 min for dye concentration, HU/PANI dose, pH, and contact time, respectively. Whereas, under light illumination (97%) at operating conditions of 15 mg/L, 15 mg, 3, and 589 min, respectively. The composite also shows high efficiencies in the removal of other types of acidic and basic dyes.
KW - Characterization
KW - Isotherm modeling
KW - Kinetic studies
KW - Polyaniline/heulandite composite
KW - Response surface
UR - http://www.scopus.com/inward/record.url?scp=85049910640&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85049910640&partnerID=8YFLogxK
U2 - 10.1016/j.apt.2018.06.030
DO - 10.1016/j.apt.2018.06.030
M3 - Article
AN - SCOPUS:85049910640
VL - 29
SP - 2501
EP - 2511
JO - Advanced Powder Technology
JF - Advanced Powder Technology
SN - 0921-8831
IS - 10
ER -