Removal of Cd, Cu, Pb, and Zn from aqueous solutions by biochars

Doumer, Marta Eliane; Rigol, Anna; Vidal, Miquel; Mangrich, Antônio S.

doi:10.1007/s11356-015-5486-3

Cited by 67 publications

(33 citation statements)

References 36 publications

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“…In the last years an increasing body of literature has been devoted to the use of biochar for multiple applications. Several works demonstrated the potential of biochar to improve soil fertility characteristics (LYCHUK et al, 2015;DING et al, 2016), in the remediation of heavy metal polluted soils (PAZ-FERREIRO et al, 2017;WANG et al, 2017) and heavy metal polluted water (DOUMER et al, 2016;KONKIENE and BALTRENAITE, 2016;PATRA et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Coffee Waste Biochar: Characterization and Zinc Adsorption From Aqueous Solution

Sertoli

Carnier

Abreu

et al. 2019

C.Sci.

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The final disposal of organic wastes has become a major challenge with increasing industrialization and population growth. Coffee wastes are examples of this, thus the conversion of these biomasses into biochar through pyrolysis could provide economic and environmental benefits, such as remediation of heavy metal polluted water. Therefore, in this work, biochar produced at 700 °C from spent coffee grounds and coffee parchment were evaluated for Zn removal from aqueous solution. Batch adsorption tests were performed with six Zn concentrations and four replicates for each material. The desorption process was performed sequentially with a pH 4.9 buffer acetic acid solution. Langmuir and Freundlich isotherms were fitted to the adsorption data using non-linear models. Batch adsorption tests showed that the adsorption was strongly dependent on biochar properties. Biochar prepared from coffee parchment was more effective at Zn binding, showing the highest adsorption capacity (0.792 mg g<sup>-1</sup>). Nevertheless, both biochars bounded Zn strongly and the adsorption process was not easily reversed.

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Section: Introductionmentioning

confidence: 99%

Coffee Waste Biochar: Characterization and Zinc Adsorption From Aqueous Solution

Sertoli

Carnier

Abreu

et al. 2019

C.Sci.

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“…Conventional strategies for oil spill cleanup involve the use of sorbent materials; adsorption is extensively used for remediation purposes56 to remove a large range of contaminants such as metals789 and organic compounds61011. Sorbent materials can be used in booms to remove the floating organic fraction or as an amendment to remediate the high-molecular-weight contamination in the sediment.…”

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confidence: 99%

“…Due to AC similarity, BC has been recently tested as sorbent material for metal removal from wastewater93032. Furthermore, it has been demonstrated that BC is potentially able to immobilize a large range of organic and inorganic contaminants in soil33.…”

mentioning

confidence: 99%

Characterizing Biochar as Alternative Sorbent for Oil Spill Remediation

Silvani

Vrchotová

Kaštánek

et al. 2017

Sci Rep

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Biochar (BC) was characterized as a new carbonaceous material for the adsorption of toluene from water. The tested BC was produced from pine wood gasification, and its sorption ability was compared with that of more common carbonaceous materials such as activated carbon (AC). Both materials were characterized in terms of textural features and sorption abilities by kinetic and equilibrium tests. AC and BC showed high toluene removal from water. Kinetic tests demonstrated that BC is characterized by faster toluene removal than AC is. Textural features demonstrated that the porosity of AC is double that of BC. Nevertheless, equilibrium tests demonstrated that the sorption ability of BC is comparable with that of AC, so the materials’ porosity is not the only parameter that drives toluene adsorption. The specific adsorption ability (mg sorbed m−2 of surface) of the BC is higher than that of AC: toluene is more highly sorbed onto the biochar surface. Biochar is furthermore obtained from biomaterial thermally treated for making energy; this also makes the use of BC economically and environmentally convenient compared with AC, which, as a manufactured material, must be obtained in selected conditions for this type of application.

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“…Sorbent amendment is one relatively novel remediation strategy that allows metals 9,10 and organic contaminants [11][12][13][14][15] to be sequestered and rendered immobile 16 for uptake in biota or transport to groundwater. Carbonaceous materials are often used for this purpose and they are amended in small doses to contaminated soils and sediments 12,[17][18][19] .…”

Section: Introductionmentioning

confidence: 99%

“…Carbonaceous materials are often used for this purpose and they are amended in small doses to contaminated soils and sediments 12,[17][18][19] . Biochar (BC) is a carbonaceous material obtained by the pyrolysis of plant and animal based biomass in an oxygen free or oxygen limited environment 9,20,21 .…”

Section: Introductionmentioning

confidence: 99%

Sorption of α-, β-, γ- and δ-hexachlorocyclohexane isomers to three widely different biochars: Sorption mechanisms and application

Silvani

Cornelissen

2019

Chemosphere

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Within this study different biochars (BC) with widely varying characteristics have been tested as materials for the adsorption of hexachlorocyclohexane's (HCH) isomers (α, β, γ and δ) from water. Three BCs produced from digestate (700 ºC), greenhouse tomato waste (550 ºC) and durian shell (400 ºC) were tested. The BCs demonstrated variable physico-chemical characteristics, especially with respect to surface area, with CO 2-surface area ranging from 5.4 to 328.6 m 2 g-1 and iron content ranging from 0.0733 to 11.17 g kg-1. Isotherm tests were carried out to understand which mechanisms drive HCH uptake to BC, to assess whether stereochemistry affects adsorption and to assess whether competitive sorption occurs. Log K F values ranged from 3.7 to 5.8 (µg kg-1) (µg L-1)-n for the various isomers on the three biochars. No competition (t-test, P < 0.0001) was observed between α-, β-, γand δ-HCH. Freundlich adsorption constants of α-, γand δ-HCH followed the order: BC digestate > BC greenhouse tomato waste > BC durian shell, in contrast to β-HCH which followed the order: BC durian shell > BC greenhouse tomato waste > BC digestate. In addition to stereochemistry, sorption

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Removal of Cd, Cu, Pb, and Zn from aqueous solutions by biochars

Cited by 67 publications

References 36 publications

Coffee Waste Biochar: Characterization and Zinc Adsorption From Aqueous Solution

Coffee Waste Biochar: Characterization and Zinc Adsorption From Aqueous Solution

Characterizing Biochar as Alternative Sorbent for Oil Spill Remediation

Sorption of α-, β-, γ- and δ-hexachlorocyclohexane isomers to three widely different biochars: Sorption mechanisms and application

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