Sorption separation of Eu and As from single-component systems by Fe-modified biochar: kinetic and equilibrium study

Frišták, Vladimír; Micháleková-Richveisová, Barbora; Víglašová, Eva; Ďuriška, Libor; Galamboš, Michal; Moreno‐Jiménez, Eduardo; Pipíška, Martin; Soja, Gerhard

doi:10.1007/s13738-016-1000-1

Cited by 48 publications

(42 citation statements)

References 32 publications

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“…After thermal treatments, the resulting pyrogenic carbonaceous material can be impregnated, for example with metals, to create additional sorption sites, e.g., by precipitating iron(oxy)hydroxides on a biochar (inorganic impregnation) to optimize its specific sorption e.g., of arsenic [171]. The results may be similar to metal-blended biochars, although the production process differs considerably (addition of metal before or after thermal treatment).…”

Section: Non-thermal Pre-and Post-treatmentsmentioning

confidence: 99%

Activated Carbon, Biochar and Charcoal: Linkages and Synergies across Pyrogenic Carbon’s ABCs

Hagemann

Spokas

Schmidt³

et al. 2018

Water

242

100

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Biochar and activated carbon, both carbonaceous pyrogenic materials, are important products for environmental technology and intensively studied for a multitude of purposes. A strict distinction between these materials is not always possible, and also a generally accepted terminology is lacking. However, research on both materials is increasingly overlapping: sorption and remediation are the domain of activated carbon, which nowadays is also addressed by studies on biochar. Thus, awareness of both fields of research and knowledge about the distinction of biochar and activated carbon is necessary for designing novel research on pyrogenic carbonaceous materials. Here, we describe the dividing ranges and common grounds of biochar, activated carbon and other pyrogenic carbonaceous materials such as charcoal based on their history, definition and production technologies. This review also summarizes thermochemical conversions and non-thermal pre-and post-treatments that are used to produce biochar and activated carbon. Our overview shows that biochar research should take advantage of the numerous techniques of activation and modification to tailor biochars for their intended applications.

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Section: Non-thermal Pre-and Post-treatmentsmentioning

confidence: 99%

Activated Carbon, Biochar and Charcoal: Linkages and Synergies across Pyrogenic Carbon’s ABCs

Hagemann

Spokas

Schmidt³

et al. 2018

Water

242

100

View full text Add to dashboard Cite

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“…For investigation of sorption kinetics, three kinetic models were used [10]. Parameters were obtained by the program MicroCal Origin 8.0 Professional (OriginLab Corporation, Northampton, MA, USA).…”

Section: Applied Mathematical Models Of Kinetic Studymentioning

confidence: 99%

“…Suitable pre-treatment and post-treatment of pyrogenic material can alter the crucial physico-chemical properties, surface morphology of sorbent, and thus enhance the sorption potential and selectivity for individual chemical species. Our previous studies [10,12,14] showed relevant roles of surface chemical modification by Fe-impregnation in sorption separation several cationic and anionic chemical forms. On the other hand physical activation by steam, heat, freeze,-thawing cycles can alter sorbent properties as well [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…Several various sorbents have been used in As pre-concentration studies [6][7][8]. In recent times, activated carbon-, biochar-, and pyrogenic carbonaceous material-based sorbents have been paid attention for application in separation processes of As from aqueous solutions and liquid media [9][10][11]. Biochar as a solid product of biomass termochemical conversion provides significant material properties, such as high porosity, negative surface charge, surface area, and stability [12].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Physical and Chemical Activation on Arsenic Sorption Separation by Grape Seeds-Derived Biochar

et al. 2018

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The utilization of carbon-rich pyrolysis materials in the separation processes of metalloids plays a crucial role in analytes pre-concentration techniques and opens a burning issue in new sorbents development. This study characterized the effect of physical and chemical activation with subsequent iron impregnation of grape seed-derived biochar on sorption removal of As from model aqueous solutions. Sorbents that were produced in slow pyrolysis process at 600 °C were characterized by SEM, elemental, and specific surface area analysis. Sorption separation of As by the studied materials was characterized as on contact time and an initial concentration dependent process reaching sorption equilibrium in 1440 min. Air activated biochar (A1GSBC) showed about 7.7 times and HNO3 activated biochar (A2GSBC) about 6.8 times higher values of Qmax as compared to control (GSBC). A1GSBC and A2GSBC can be easily and effectively regenerated by alkali agent in several cycles. All of these results showed the practical use of the activation process to produce effective sorption materials with increased surface area and improved sorption potential for anionic forms separation from liquid wastes.

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“…Furthermore, biochar has rarely been used to remove Eu(III). For example, Frišták et al [23] separated the Eu sorption on Fe-modified biochar in their recent work. Therefore, it is necessary to enhance its sorption research on biochar.…”

mentioning

confidence: 99%

Sorption Behaviors and Mechanismsof Eu(III) on Rice Straw-derived Biochar

Dong¹,

Wu²,

Li³

et al. 2019

Journal of Inorganic Materials

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Biochar, derived from agricultural residuals, is extensively applied to remove detrimental heavy metals from wastewater, which has dual significance for the environment protection. Herein, the sorption behavior and interaction mechanism of Eu(III) on rice straw-derived biochar was investigated by batch and spectroscopic technologies. The solution pH significantly affects the percentage of the sorption, but has little effect on the contact time. Humic substances (HA/FA) significantly enhance Eu(III) sorption with solution pH<7.0, but inhibit the sorption with solution pH>7.0. The sorption mechanism involves co-precipitation or inner-sphere surface complexation. And the chemical sorption rate is restricted by intra-particle diffusion process. Besides, the Freundlich model simulates isotherms best and the maximum sorption amount is up to 40.717 mg/kg, which correlates with the stratified structure and abundant functional groups of biochar. The thermodynamic parameters suggest that the sorption of Eu(III) on biochar is a spontaneous and endothermic process. Therefore, these results are valuable to assess the potential application values of rice straw-derived biochar for the removal of Eu(III) in water systems.

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Sorption separation of Eu and As from single-component systems by Fe-modified biochar: kinetic and equilibrium study

Cited by 48 publications

References 32 publications

Activated Carbon, Biochar and Charcoal: Linkages and Synergies across Pyrogenic Carbon’s ABCs

Activated Carbon, Biochar and Charcoal: Linkages and Synergies across Pyrogenic Carbon’s ABCs

Effect of Physical and Chemical Activation on Arsenic Sorption Separation by Grape Seeds-Derived Biochar

Sorption Behaviors and Mechanismsof Eu(III) on Rice Straw-derived Biochar

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