Publication:
The use of K2CO3 modified sunflower seed husks for removing of metal ions from industrial wastewater

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Issued Date

2018

Resource Type

Article

File Type

application/pdf

ISSN

22839216

DOI

10.3303/CET1870041

Other identifier(s)

2-s2.0-85051318061

Rights Holder(s)

Scopus

Bibliographic Citation

Chemical Engineering Transactions. Vol 70, (2018), p.241-246

Suggested Citation

Srisuwan W., Jubsilp C., Srisorrachatr S. The use of K2CO3 modified sunflower seed husks for removing of metal ions from industrial wastewater. Chemical Engineering Transactions. Vol 70, (2018), p.241-246. doi:10.3303/CET1870041 Retrieved from: https://hdl.handle.net/20.500.14740/3797

Title

The use of K2CO3 modified sunflower seed husks for removing of metal ions from industrial wastewater

Author(s)

Srisuwan W.
 Jubsilp C.
 Srisorrachatr S.

Abstract

Activated carbons which prepared from residual or waste biomaterials are widely examined as low-cost adsorbents for wastewater treatment, as well as heavy metal ions in wastewater have become a serious environmental problem. In addition, the removal efficiency of new cheap modified adsorbent from agricultural waste is important and would probably increase the quality of the environment. Therefore, it is necessary to investigate the understanding of adsorptive removal mechanism and removal efficiency of the adsorbent. This study is aimed to evaluate the removal efficiency of Pb(II), Ni(II), Zn(II), and Cd(II) in aqueous solution by using a modified sunflower seed husk (MSSH) for industrial wastewater treatment. The husk as an adsorbent was treated by 0.8 M K2CO3, afterward; it was heated at 400 °C, sieved to a size of 500 to 710 µm (400-K2CO3MSSH). As a result, it was found that the Methylene blue number of 400-K2CO3MSSH was 50.80 mg/g and the Iodine number was 808.54 mg/g. The adsorption experiments were conducted with an initial metal ion concentration of 100 mg/L and pH of 5. In a batch experiment of single metal ion synthetic wastewater, it was observed that the adsorption percentage of Ni(II), Zn(II), Pb(II), and Cd(II) were 96.50, 97.03, 96.98, and 97.54, respectively. For mixed synthetic wastewater, the adsorption percentage of Ni(II), Zn(II), Pb(II), and Cd(II) were 87.16, 94.30, 98.02, and 97.01, respectively. Competitive adsorption decreased the removal of metal ions, and the equilibration time was showed longer result than that in the single system. Wastewater from the automotive industry was consisted of Ni(II), and Zn(II) which had the percentages of removal at 75.25 and 87.50, respectively. Whereas the lathe work demonstrated the percentage of Zn(II) and Pb(II) at 78.18 and 88.34 of removal. Experimental results were found that the Langmuir isotherm model was matched with a monolayer adsorption capacity per g adsorbent of 79.37 mg Ni(II), 76.34 mg Zn(II), 74.07 mg Pb(II), and 81.97 mg Cd(II). From our results, it can be concluded that 400-K2CO3MSSH could be potentially used as an attractive low-cost adsorbent for Ni(II), Zn(II), Pb(II) and Cd(II) containing industrial wastewaters. Copyright © 2018, AIDIC Servizi S.r.l.

Subject(s)

Activated carbon
 Adsorbents
 Adsorption
 Agricultural wastes
 Aromatic compounds
 Automotive industry
 Cadmium compounds
 Chemicals removal (water treatment)
 Costs
 Efficiency
 Heavy metals
 Industrial water treatment
 Isotherms
 Lead compounds
 Lead removal (water treatment)
 Metal ions
 Nickel compounds
 Potash
 Solutions
 Waste treatment
 Wastewater treatment
 Adsorption experiment
 Competitive adsorption
 Environmental problems
 Industrial wastewater treatment
 Industrial wastewaters
 Langmuir isotherm models
 Metal ion concentration
 Synthetic waste water
 Zinc compounds

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URI

https://hdl.handle.net/20.500.14740/3797

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Scopus: Year 1983-2021

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