Enhanced adsorption of metal ions onto functionalized granular activated carbons prepared from cherry stones

Jaramillo, J.; Gómez-Serrano, V.; Álvarez, Pedro M.

doi:10.1016/j.jhazmat.2008.04.009

Cited by 94 publications

(40 citation statements)

References 29 publications

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“…Cationic species are thus adsorbed onto negative surface charge functional groups. The fixation of acidic oxygen complexes onto the surface creates an ion-exchange behavior where copper ion species are retained as ligands and protons are released to the aqueous solution giving rise to formation of metal-ligand surface complexes [46].…”

Section: Resultsmentioning

confidence: 99%

Efficacy of Chicken Litter and Wood Biochars and Their Activated Counterparts in Heavy Metal Clean up from Wastewater

Lima

Reddy

et al. 2015

Agriculture

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It is known that properties of activated biochars are tightly associated with those of the original feedstock as well as pyrolysis and activation conditions. This study examined two feedstock types, pine wood shavings and chicken litter, to produce biochars at two different pyrolysis temperatures and subsequently activated by steam, acid or base. In order to measure activation efficiency, all materials were characterized for their properties and ability to remediate two well-known heavy metals of concern: copper and arsenic. Base activated biochars were superior in arsenic adsorption, to acid or steam activated samples, but increase in adsorption was not significant to warrant use. For wood biochars, significant increases of surface functionality as related to oxygen bearing groups and surface charge were observed upon acid activation which led to increased copper ion adsorption. However, oxygen bearing functionalities were not sufficient to explain why chicken litter biochars and steam activated biochars appeared to be significantly superior to wood shavings in positively charged metal ion adsorption. For chicken litter, functionality of respective biochars could be related to phosphate containing groups inherited

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Section: Resultsmentioning

confidence: 99%

Efficacy of Chicken Litter and Wood Biochars and Their Activated Counterparts in Heavy Metal Clean up from Wastewater

Lima

Reddy

et al. 2015

Agriculture

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“…Desorption experiments showed that more than 95% of Pb(II) removal can be achieved in 24 h. The competition of H + ions in the adsorption sites promote the release of the adsorbed Pb(II) into the aqueous solution. Therefore, the desorption results confirmed that Pb(II) is mostly adsorbed on the surface by comparatively weak adsorptive interactions and partially by the surface complexes through oxygen bonding (Jaramillo et al 2009).…”

Section: Reusability Of Collagen/cellulose Beads and Bt-collagen/cellmentioning

confidence: 61%

Preparation of Tannin-immobilized Collagen/Cellulose Bead for Pb(II) Adsorption in Aqueous Solutions

Zhang¹,

Ding²,

Chen³

et al. 2015

BioResources

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Bayberry tannin-immobilized collagen/cellulose bio-adsorbent (BTcollagen/cellulose) was prepared via the reaction of bayberry tannin with the amino group of collagen in collagen/cellulose blends. Compared with collagen/cellulose beads without tannin, BT-collagen/cellulose had a more compact structure and higher thermal stability. Furthermore, the crystalline structure of cellulose in BT-collagen/cellulose was preserved. The adsorption properties of BT-collagen/cellulose to Pb(II) in aqueous solution were investigated and compared with those of collagen/cellulose. The adsorption of Pb(II) on both of the two bioadsorbents reached the maximum at pH near 5.5. Based on the mass content of collagen, the equilibrium adsorption capacity of BTcollagen/cellulose at 25 °C was 1.352 mmol/g, according to Langmuir isotherms, which was higher than that of collagen/cellulose (0.345 mmol/g). In kinetics studies, both of the two bio-adsorbents reached equilibrium within ~240 min, and the experimental data could be well fitted by the pseudo-second-order rate model. Nevertheless, BTcollagen/cellulose had a better reusability after three cycles of adsorption-desorption.

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“…Oxidative modification of carbonaceous materials is not the same as activation, as the oxidation is carried out by hydrogen peroxide (H 2 O 2 ) [108,160] or nitric acid (HNO 3 ) at low temperatures (ambient to 100 • C) and mainly aims at the creation of oxidized functional groups and not at an increase in surface area. In fact, HNO 3 is especially known to decrease the specific surface area and the pore volume due to the destruction of the porous structure [76].…”

Section: Modificationmentioning

confidence: 99%

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

Hagemann

Spokas

Schmidt³

et al. 2018

Water

206

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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Enhanced adsorption of metal ions onto functionalized granular activated carbons prepared from cherry stones

Cited by 94 publications

References 29 publications

Efficacy of Chicken Litter and Wood Biochars and Their Activated Counterparts in Heavy Metal Clean up from Wastewater

Efficacy of Chicken Litter and Wood Biochars and Their Activated Counterparts in Heavy Metal Clean up from Wastewater

Preparation of Tannin-immobilized Collagen/Cellulose Bead for Pb(II) Adsorption in Aqueous Solutions

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

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