Assessment of Miscanthus × giganteus derived biochar as copper and zinc adsorbent:  Study of the effect of pyrolysis temperature, pH and hydrogen peroxide modification

Alessio Cibati; Bente Foereid; Ajay  Bissessur; Simona Hapca

doi:10.1016/j.jclepro.2017.06.114

Assessment of Miscanthus × giganteus derived biochar as copper and zinc adsorbent: Study of the effect of pyrolysis temperature, pH and hydrogen peroxide modification

Alessio Cibati (Lead / Corresponding author), Bente Foereid, Ajay Bissessur, Simona Hapca

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

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Abstract

In this work, experimental and modelling investigations were conducted on biochars pyrolyzed at 350 °C and 600 °C, to determine the effect of pyrolysis temperature, hydrogen peroxide activation and pH on copper and zinc removal, in comparison with commercially available activated carbons. Characterization of biochars was performed by BET surface area, elemental analysis and FTIR spectroscopy. Experiments results demonstrated that biochar pyrolyzed at 600 °C adsorbed both copper and zinc more efficiently than biochar pyrolyzed at 350 °C. Chemical activation by H2O2 increased the removal capacity of biochar pyrolyzed at 350 °C. All investigated biochars showed a stronger affinity for copper retention, with a maximum adsorption capacity of 15.7 mg/g while zinc was 10.4 mg/g. The best adsorption performances were obtained at pH 5 and 6. Langmuir adsorption isotherm described copper adsorption process satisfactorily, while zinc adsorption was better described by Freundlich isotherm.

Original language	English
Pages (from-to)	1285-1296
Number of pages	11
Journal	Journal of Cleaner Production
Volume	162
Early online date	18 Jun 2017
DOIs	https://doi.org/10.1016/j.jclepro.2017.06.114
Publication status	Published - 20 Sept 2017

Keywords

Biochar
Metal adsorption
Isotherms
Adsorbent
Copper
Zinc

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10.1016/j.jclepro.2017.06.114

Author Accepted ManuscriptAccepted author manuscript, 1.06 MBLicence: CC BY-NC-ND

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title = "Assessment of Miscanthus × giganteus derived biochar as copper and zinc adsorbent: Study of the effect of pyrolysis temperature, pH and hydrogen peroxide modification",

abstract = "In this work, experimental and modelling investigations were conducted on biochars pyrolyzed at 350 °C and 600 °C, to determine the effect of pyrolysis temperature, hydrogen peroxide activation and pH on copper and zinc removal, in comparison with commercially available activated carbons. Characterization of biochars was performed by BET surface area, elemental analysis and FTIR spectroscopy. Experiments results demonstrated that biochar pyrolyzed at 600 °C adsorbed both copper and zinc more efficiently than biochar pyrolyzed at 350 °C. Chemical activation by H2O2 increased the removal capacity of biochar pyrolyzed at 350 °C. All investigated biochars showed a stronger affinity for copper retention, with a maximum adsorption capacity of 15.7 mg/g while zinc was 10.4 mg/g. The best adsorption performances were obtained at pH 5 and 6. Langmuir adsorption isotherm described copper adsorption process satisfactorily, while zinc adsorption was better described by Freundlich isotherm.",

keywords = "Biochar, Metal adsorption, Isotherms, Adsorbent, Copper, Zinc",

author = "Alessio Cibati and Bente Foereid and Ajay Bissessur and Simona Hapca",

note = "This study was supported by an International Fellowship funded by the University of Rome “La Sapienza” and by the Short Term Scientific Mission (CSCM) within the COST (COST- STSM-ECOST-STSM-TD1107-100613-032222) scientific programme on Biochar as an option for sustainable resource management. ",

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Assessment of Miscanthus × giganteus derived biochar as copper and zinc adsorbent: Study of the effect of pyrolysis temperature, pH and hydrogen peroxide modification. / Cibati, Alessio (Lead / Corresponding author); Foereid, Bente; Bissessur, Ajay et al.
In: Journal of Cleaner Production, Vol. 162, 20.09.2017, p. 1285-1296.

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

TY - JOUR

T1 - Assessment of Miscanthus × giganteus derived biochar as copper and zinc adsorbent

T2 - Study of the effect of pyrolysis temperature, pH and hydrogen peroxide modification

AU - Cibati, Alessio

AU - Foereid, Bente

AU - Bissessur, Ajay

AU - Hapca, Simona

N1 - This study was supported by an International Fellowship funded by the University of Rome “La Sapienza” and by the Short Term Scientific Mission (CSCM) within the COST (COST- STSM-ECOST-STSM-TD1107-100613-032222) scientific programme on Biochar as an option for sustainable resource management.

PY - 2017/9/20

Y1 - 2017/9/20

N2 - In this work, experimental and modelling investigations were conducted on biochars pyrolyzed at 350 °C and 600 °C, to determine the effect of pyrolysis temperature, hydrogen peroxide activation and pH on copper and zinc removal, in comparison with commercially available activated carbons. Characterization of biochars was performed by BET surface area, elemental analysis and FTIR spectroscopy. Experiments results demonstrated that biochar pyrolyzed at 600 °C adsorbed both copper and zinc more efficiently than biochar pyrolyzed at 350 °C. Chemical activation by H2O2 increased the removal capacity of biochar pyrolyzed at 350 °C. All investigated biochars showed a stronger affinity for copper retention, with a maximum adsorption capacity of 15.7 mg/g while zinc was 10.4 mg/g. The best adsorption performances were obtained at pH 5 and 6. Langmuir adsorption isotherm described copper adsorption process satisfactorily, while zinc adsorption was better described by Freundlich isotherm.

AB - In this work, experimental and modelling investigations were conducted on biochars pyrolyzed at 350 °C and 600 °C, to determine the effect of pyrolysis temperature, hydrogen peroxide activation and pH on copper and zinc removal, in comparison with commercially available activated carbons. Characterization of biochars was performed by BET surface area, elemental analysis and FTIR spectroscopy. Experiments results demonstrated that biochar pyrolyzed at 600 °C adsorbed both copper and zinc more efficiently than biochar pyrolyzed at 350 °C. Chemical activation by H2O2 increased the removal capacity of biochar pyrolyzed at 350 °C. All investigated biochars showed a stronger affinity for copper retention, with a maximum adsorption capacity of 15.7 mg/g while zinc was 10.4 mg/g. The best adsorption performances were obtained at pH 5 and 6. Langmuir adsorption isotherm described copper adsorption process satisfactorily, while zinc adsorption was better described by Freundlich isotherm.

KW - Biochar

KW - Metal adsorption

KW - Isotherms

KW - Adsorbent

KW - Copper

KW - Zinc

U2 - 10.1016/j.jclepro.2017.06.114

DO - 10.1016/j.jclepro.2017.06.114

M3 - Article

SN - 0959-6526

VL - 162

SP - 1285

EP - 1296

JO - Journal of Cleaner Production

JF - Journal of Cleaner Production

ER -

Assessment of Miscanthus × giganteus derived biochar as copper and zinc adsorbent: Study of the effect of pyrolysis temperature, pH and hydrogen peroxide modification

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Keywords

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