Adsorption of tetracycline on Fe (Hydr)oxides

Effects of pH and metal cation (Cu2+, Zn2+ and Al3+) addition in various molar ratios

Liang Ching Hsu, Yu Ting Liu, Chien Hui Syu, Mei Hsia Huang, Yu Min Tzou, Heng Yi Teah

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Iron (Fe) (hydr)oxides control the mobility and bioavailability of tetracycline (TC) in waters and soils. Adsorption of TC on Fe (hydr)oxides is greatly affected by polyvalent metals; however, impacts of molar metal/TC ratios on TC adsorptive behaviours on Fe (hydr)oxides remain unclear. Results showed that maximum TC adsorption on ferrihydrite and goethite occurred at pH 5–6. Such TC adsorption was generally promoted by the addition of Cu2+, Zn2+ and Al3+. The greatest increase in TC adsorption was found in the system with molar Cu/TC ratio of 3 due to the formation of Fe hydr(oxide)– Cu–TC ternary complexes. Functional groups on TC that were responsible for the complexation with Cu2+ shifted from phenolic diketone groups at Cu/TC molar ratio < 1 to amide groups at Cu/TC molar ratio ≥ 1. For the addition of Al3+, the complexation only took place with phenolic diketone groups, resulting in the enhanced TC adsorption at a molar Al/TC ratio of 1. However, TC adsorption decreased for Al/TC molar ratio > 1 as excess Al3+ led to the competitive adsorption with Al/TC complexes. For the Zn2+ addition, no significant correlation was found between TC adsorption capacity and molar Zn/TC ratios.

Original languageEnglish
Article number171941
JournalRoyal Society Open Science
Volume5
Issue number3
DOIs
Publication statusPublished - 2018 Mar 28
Externally publishedYes

Fingerprint

Tetracycline
Oxides
Cations
Metals
Adsorption
Complexation
Functional groups
Iron

Keywords

  • Adsorption
  • Fe (hydr)oxide
  • Metal cations
  • Molar ratio
  • Tetracycline

ASJC Scopus subject areas

  • General

Cite this

Adsorption of tetracycline on Fe (Hydr)oxides : Effects of pH and metal cation (Cu2+, Zn2+ and Al3+) addition in various molar ratios. / Hsu, Liang Ching; Liu, Yu Ting; Syu, Chien Hui; Huang, Mei Hsia; Tzou, Yu Min; Teah, Heng Yi.

In: Royal Society Open Science, Vol. 5, No. 3, 171941, 28.03.2018.

Research output: Contribution to journalArticle

@article{bb853f2c14b1439e87c9ac6a528c889f,
title = "Adsorption of tetracycline on Fe (Hydr)oxides: Effects of pH and metal cation (Cu2+, Zn2+ and Al3+) addition in various molar ratios",
abstract = "Iron (Fe) (hydr)oxides control the mobility and bioavailability of tetracycline (TC) in waters and soils. Adsorption of TC on Fe (hydr)oxides is greatly affected by polyvalent metals; however, impacts of molar metal/TC ratios on TC adsorptive behaviours on Fe (hydr)oxides remain unclear. Results showed that maximum TC adsorption on ferrihydrite and goethite occurred at pH 5–6. Such TC adsorption was generally promoted by the addition of Cu2+, Zn2+ and Al3+. The greatest increase in TC adsorption was found in the system with molar Cu/TC ratio of 3 due to the formation of Fe hydr(oxide)– Cu–TC ternary complexes. Functional groups on TC that were responsible for the complexation with Cu2+ shifted from phenolic diketone groups at Cu/TC molar ratio < 1 to amide groups at Cu/TC molar ratio ≥ 1. For the addition of Al3+, the complexation only took place with phenolic diketone groups, resulting in the enhanced TC adsorption at a molar Al/TC ratio of 1. However, TC adsorption decreased for Al/TC molar ratio > 1 as excess Al3+ led to the competitive adsorption with Al/TC complexes. For the Zn2+ addition, no significant correlation was found between TC adsorption capacity and molar Zn/TC ratios.",
keywords = "Adsorption, Fe (hydr)oxide, Metal cations, Molar ratio, Tetracycline",
author = "Hsu, {Liang Ching} and Liu, {Yu Ting} and Syu, {Chien Hui} and Huang, {Mei Hsia} and Tzou, {Yu Min} and Teah, {Heng Yi}",
year = "2018",
month = "3",
day = "28",
doi = "10.1098/rsos.171941",
language = "English",
volume = "5",
journal = "Royal Society Open Science",
issn = "2054-5703",
publisher = "The Royal Society",
number = "3",

}

TY - JOUR

T1 - Adsorption of tetracycline on Fe (Hydr)oxides

T2 - Effects of pH and metal cation (Cu2+, Zn2+ and Al3+) addition in various molar ratios

AU - Hsu, Liang Ching

AU - Liu, Yu Ting

AU - Syu, Chien Hui

AU - Huang, Mei Hsia

AU - Tzou, Yu Min

AU - Teah, Heng Yi

PY - 2018/3/28

Y1 - 2018/3/28

N2 - Iron (Fe) (hydr)oxides control the mobility and bioavailability of tetracycline (TC) in waters and soils. Adsorption of TC on Fe (hydr)oxides is greatly affected by polyvalent metals; however, impacts of molar metal/TC ratios on TC adsorptive behaviours on Fe (hydr)oxides remain unclear. Results showed that maximum TC adsorption on ferrihydrite and goethite occurred at pH 5–6. Such TC adsorption was generally promoted by the addition of Cu2+, Zn2+ and Al3+. The greatest increase in TC adsorption was found in the system with molar Cu/TC ratio of 3 due to the formation of Fe hydr(oxide)– Cu–TC ternary complexes. Functional groups on TC that were responsible for the complexation with Cu2+ shifted from phenolic diketone groups at Cu/TC molar ratio < 1 to amide groups at Cu/TC molar ratio ≥ 1. For the addition of Al3+, the complexation only took place with phenolic diketone groups, resulting in the enhanced TC adsorption at a molar Al/TC ratio of 1. However, TC adsorption decreased for Al/TC molar ratio > 1 as excess Al3+ led to the competitive adsorption with Al/TC complexes. For the Zn2+ addition, no significant correlation was found between TC adsorption capacity and molar Zn/TC ratios.

AB - Iron (Fe) (hydr)oxides control the mobility and bioavailability of tetracycline (TC) in waters and soils. Adsorption of TC on Fe (hydr)oxides is greatly affected by polyvalent metals; however, impacts of molar metal/TC ratios on TC adsorptive behaviours on Fe (hydr)oxides remain unclear. Results showed that maximum TC adsorption on ferrihydrite and goethite occurred at pH 5–6. Such TC adsorption was generally promoted by the addition of Cu2+, Zn2+ and Al3+. The greatest increase in TC adsorption was found in the system with molar Cu/TC ratio of 3 due to the formation of Fe hydr(oxide)– Cu–TC ternary complexes. Functional groups on TC that were responsible for the complexation with Cu2+ shifted from phenolic diketone groups at Cu/TC molar ratio < 1 to amide groups at Cu/TC molar ratio ≥ 1. For the addition of Al3+, the complexation only took place with phenolic diketone groups, resulting in the enhanced TC adsorption at a molar Al/TC ratio of 1. However, TC adsorption decreased for Al/TC molar ratio > 1 as excess Al3+ led to the competitive adsorption with Al/TC complexes. For the Zn2+ addition, no significant correlation was found between TC adsorption capacity and molar Zn/TC ratios.

KW - Adsorption

KW - Fe (hydr)oxide

KW - Metal cations

KW - Molar ratio

KW - Tetracycline

UR - http://www.scopus.com/inward/record.url?scp=85045336311&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85045336311&partnerID=8YFLogxK

U2 - 10.1098/rsos.171941

DO - 10.1098/rsos.171941

M3 - Article

VL - 5

JO - Royal Society Open Science

JF - Royal Society Open Science

SN - 2054-5703

IS - 3

M1 - 171941

ER -