Cited by 80Adsorption and biosorption for pollutant removalCoagulation and Flocculation StudiesHeavy Metal Pollution Remediation

An experimental and quantum chemical study of removal of utmostly quantified heavy metals in wastewater using coconut husk: A novel approach to mechanism

Malik, Reena, Dahiya, Shefali, lata, Suman·2017·International Journal of Biological Macromolecules

Abstract

The present study explores the uptake capacity of low cost agricultural waste i.e.Unmodified Coconut (Cocos nucifera L.) Husk for the removal of heavy metal (Pb 2+, Cu 2+, Ni 2+ and Zn 2+) ions from industrial wastewater. The effect of various operational parameters such as adsorbent dose, high initial metal concentration (100mg/L-500mg/L), pH, temperature and agitation time on the removal of these ions has been investigated using batch experiments. The results showed that maximum uptake through adsorption occurred at 443.0mg/g (88.6%) for Cu, for Ni with 404.5mg/g (80.9%), 362.2mg/g (72.4%) for Pb 2+ and 338.0mg/g (67.6%) for Zn 2+ ion simultaneously. The adsorption capacity was found to be sensitive to the amount of adsorbent, heavy metal ion concentration, pH, temperature and contact time. The experimental statistics have been correlated and interpreted by a new proposed mechanism based upon quantum chemical study of the adsorbent. The theoretical study using quantum has provided the rich electron donation sites of Coconut Husk and hence proposed mechanism of removal. The various adsorption isotherms (Langmuir, Freundlich, Temkin, Dubinin-Radushkevich and Flory-Huggins), SEM study and physico-chemical properties of the ions suit well to the observed data.

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Crossref · 10.1016/j.ijbiomac.2017.01.100

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Authors
Malik, R., Dahiya, S., & lata, S.
Affiliations
Deenbandhu Chhotu Ram University of Science and Technology (IN)
Corresponding author
lata, Suman
Venue
International Journal of Biological Macromolecules
Publisher
Elsevier BV
Published
2017-05
Volume
98
Pages
139-149
ISSN
0141-8130 (ISSN-L)
OpenAlex
W2580312282
Cited by
80
References
64
Citations by year
2026: 5 · 2025: 9 · 2024: 4 · 2023: 13 · 2022: 9 · 2021: 9 · 2020: 15 · 2019: 7 · 2018: 7 · 2017: 2
FWCI
4.52
Type
journal article
Language
en
Open access
closed
Locations
  • International Journal of Biological Macromolecules (publishedVersion)
  • PubMed (publishedVersion)
Funders
university grant commission (17-06/2012(1)EU-V)
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Environmental Science › Water Science and Technology › Coagulation and Flocculation Studies
  • Physical Sciences › Environmental Science › Water Science and Technology › Heavy Metal Pollution Remediation
Keywords
coconut husk, heavy metal removal, adsorption, industrial wastewater, lead, copper, nickel, zinc, agricultural waste adsorbent, adsorption mechanism, quantum chemical analysis, adsorption isotherms, low-cost adsorbent
MeSH terms
Adsorption, Cocos, Hydrogen-Ion Concentration, Kinetics, Models, Molecular, Molecular Conformation, Quantum Theory, Seeds, Temperature, Time Factors, Water Pollutants, Chemical, Water Purification, Metals, Heavy, Wastewater

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