Publication: Fast and Efficient Removal of Hexavalent Chromium from Water by Iron Oxide Particles
Issued Date
2018
Resource Type
Language
eng
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application/pdf
Access Rights
open access
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ผลงานนี้เป็นลิขสิทธิ์ของมหาวิทยาลัยมหิดล ขอสงวนไว้สำหรับเพื่อการศึกษาเท่านั้น ต้องอ้างอิงแหล่งที่มา ห้ามดัดแปลงเนื้อหา และห้ามนำไปใช้เพื่อการค้า
Rights Holder(s)
Faculty of Environment and Resource Studies Mahidol University
Bibliographic Citation
Environment and Natural Resources Journal. Vol. 16, No. 1 (Jan - Jun 2018), 91-100
Suggested Citation
Duangta Kitkaew, Athit Phetrak, Sumate Ampawong, Rachaneekorn Mingkhwan, Doungkamon Phihusut, Kamolnetr Okanurak, Chongrak Polprasert Fast and Efficient Removal of Hexavalent Chromium from Water by Iron Oxide Particles. Environment and Natural Resources Journal. Vol. 16, No. 1 (Jan - Jun 2018), 91-100. Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/114026
Research Projects
Organizational Units
Authors
Journal Issue
EnNRJ Vol. 16 No. 1
(2018)
Thesis
Title
Fast and Efficient Removal of Hexavalent Chromium from Water by Iron Oxide Particles
Author's Affiliation
Mahidol University. Faculty of Public Health. Department of Sanitary Engineering
Mahidol University. Faculty of Tropical Medicine. Department of Social and Environmental Medicine
Mahidol University. Faculty of Tropical Medicine. Department of Tropical Pathology
Chulalongkorn University. Environmental Research Institute
Thammasat University. Faculty of Engineering. Department of Civil Engineering
Mahidol University. Faculty of Tropical Medicine. Department of Social and Environmental Medicine
Mahidol University. Faculty of Tropical Medicine. Department of Tropical Pathology
Chulalongkorn University. Environmental Research Institute
Thammasat University. Faculty of Engineering. Department of Civil Engineering
Abstract
Iron oxide particles (IOPs) were synthesized by chemical co-precipitation technique and further used as an adsorbent in removing hexavalent chromium (Cr(VI)) from aqueous solutions during batch adsorption. The IOP adsorbent had specific surface area of 65 m2/g, total pore volume of 0.25 cm3/g and mostly contained a mesoporous structure. The analysis of scanning and transmission electron microscopy indicated that the adsorbent contained a substantial amount of iron oxide of about 66%, which was well distributed throughout the adsorbent. The IOP adsorbent showed a rapid and efficient Cr(VI) removal that followed Langmuir adsorption isotherm model with maximum adsorption capacity of 2.39 mg-Cr(VI)/g-IOP, demonstrating a monolayer formation on the adsorptive sites of IOP. The kinetic adsorption of Cr(VI) on the IOP followed the pseudo-second-order model, suggesting chemisorption. Thus, the IOP adsorbent provides a potentially effective technology in eliminating of Cr(VI) from water since it can remove appreciable amounts of Cr(VI) with a relatively short contact time of 30 min.