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

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

doi:10.1016/j.biortech.2022.127529

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

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

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

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 (q_max) 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 q_max of different MnFe₂O₄-biochars becomes insignificant, confirming the role of biochars being principally an oxide carrier instead of an adsorbent.

Original language	English
Article number	127529
Journal	Bioresource technology
Volume	360
DOIs	https://doi.org/10.1016/j.biortech.2022.127529
Publication status	Published - 2022 Sept

All Science Journal Classification (ASJC) codes

Bioengineering
Environmental Engineering
Renewable Energy, Sustainability and the Environment
Waste Management and Disposal

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10.1016/j.biortech.2022.127529

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title = "Pristine and manganese ferrite modified biochars for copper ion adsorption: Type-wide comparison",

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.",

author = "Huang, {Wei Hao} and Wu, {Rome Ming} and Chang, {Jo Shu} and Juang, {Shiang Ying} and Lee, {Duu Jong}",

note = "Funding Information: Thanks to financial supports of Ministry of Science and Technology of Taiwan (No. 110-2221-E-131-029). Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2022",

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doi = "10.1016/j.biortech.2022.127529",

language = "English",

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journal = "Bioresource technology",

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T1 - Pristine and manganese ferrite modified biochars for copper ion adsorption

T2 - Type-wide comparison

AU - Huang, Wei Hao

AU - Wu, Rome Ming

AU - Chang, Jo Shu

AU - Juang, Shiang Ying

AU - Lee, Duu Jong

PY - 2022/9

Y1 - 2022/9

N2 - 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.

AB - 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.

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

Abstract

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