Laboratory and pilot-scale field experiments for application of iron oxide nanoparticle-loaded chitosan composites to phosphate removal from natural water

Jae Hyun Kim, Song Bae Kim, Sang-Hyup Lee, Jae Woo Choi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The aim of this study was to apply iron oxide nanoparticle-chitosan (ION-chitosan) composites to phosphate removal from natural water collected from the Seoho Stream in Suwon, Republic of Korea. Laboratory batch experiments showed that phosphate removal by the ION-chitosan composites was not sensitive to pH changes between pH values of 5.0 and 9.0. During six cycles of adsorption–desorption, the composites could be successfully regenerated with 5 mM NaOH solution and reused for phosphate removal. Laboratory fixed-bed column experiments (column height = 10 and 20 cm, inner diameter = 2.5 cm, flow rate = 8.18 and 16.36 mL/min) demonstrated that the composites could be successfully applied for phosphate removal under dynamic flow conditions. A pilot-scale field experiment was performed in a pilot plant, which was mainly composed of chemical reactor/dissolved air flotation and an adsorption tower, built nearby the Seoho Stream. The natural water was pumped from the Seoho Stream into the pilot plant, passed through the chemical reactor/dissolved air flotation process, and then introduced into the adsorption tower (height = 100 cm, inner diameter = 45 cm, flow rate = 7.05 ± 0.18 L/min) for phosphate removal via the composites (composite volume = 80 L, composite weight = 85.74 kg). During monitoring of the adsorption tower (33 days), the influent total phosphorus (T-P) concentration was in the range of 0.020–0.046 mgP/L, whereas the effluent T-P concentration was in the range of 0.010–0.028 mgP/L. The percent removal of T-P in the adsorption tower was 52.3% with a phosphate removal capacity of 0.059 mgP/g.

Original languageEnglish
Pages (from-to)1-10
Number of pages10
JournalEnvironmental Technology (United Kingdom)
DOIs
Publication statusAccepted/In press - 2017 Apr 11

Fingerprint

Chitosan
Adsorption towers
Nanoparticles
iron oxide
Phosphates
Adsorption
Water
Composite materials
Phosphorus
adsorption
Experiments
Chemical reactors
water
phosphorus
Flotation
Pilot plants
Air
Flow rate
Republic of Korea
air

Keywords

  • Chitosan
  • ion oxide nanoparticles
  • phosphate removal
  • pilot-scale field experiment
  • polymer composites

ASJC Scopus subject areas

  • Environmental Chemistry
  • Water Science and Technology
  • Waste Management and Disposal

Cite this

Laboratory and pilot-scale field experiments for application of iron oxide nanoparticle-loaded chitosan composites to phosphate removal from natural water. / Kim, Jae Hyun; Kim, Song Bae; Lee, Sang-Hyup; Choi, Jae Woo.

In: Environmental Technology (United Kingdom), 11.04.2017, p. 1-10.

Research output: Contribution to journalArticle

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