Pristine and manganese ferrite modified biochars for copper ion adsorption : Type-wide comparison

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

2 Scopus Citations
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Author(s)

  • Wei-Hao Huang
  • Rome-Ming Wu
  • Jo-Shu Chang
  • Shiang-Ying Juang
  • Duu-Jong Lee

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number127529
Journal / PublicationBioresource Technology
Volume360
Online published25 Jun 2022
Publication statusPublished - Sep 2022

Abstract

This study synthesized nine biochars from different feedstocks and chemically modified their surfaces using MnFe2O4 precipitation at pH 11 (MnFe2O4-biochars). The maximum adsorption quantities (qmax) of Cu(II) at pH 6 and 25 °C for pristine biochars based on Langmuir model ranged 10.4–23.6 mg/g and for MnFe2O4-biochars, 32.7–43.1 mg/g, with enhancement from 65.6% (bamboo biochar) to 246% (white popinac biochar). Type-wide comparison shows no correlation between surface area of pristine or MnFe2O4-biochars on the adsorption performance. Conversely, the carboxyl groups on the nine biochar surfaces have contributed to Cu(II) adsorption. The type-dependence for qmax of different MnFe2O4-biochars becomes insignificant, confirming the role of biochars being principally an oxide carrier instead of an adsorbent.

Citation Format(s)

Pristine and manganese ferrite modified biochars for copper ion adsorption : Type-wide comparison. / Huang, Wei-Hao; Wu, Rome-Ming; Chang, Jo-Shu; Juang, Shiang-Ying; Lee, Duu-Jong.

In: Bioresource Technology, Vol. 360, 127529, 09.2022.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review