Study of sulfur introduction in activated carbon

Calahorro, C. Valenzuela; Macı́as-Garcı́a, A.; García, Álvaro; Serrano, Vicente Gómez

doi:10.1016/0008-6223(90)90006-k

Cited by 35 publications

(3 citation statements)

References 14 publications

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“…Sulfur complexes bonded to the carbon surface have good stability and can resist extraction by solvent and decomposition at temperatures up to 1000 °C. 31 Sulfur is usually introduced to the surface of activated carbon under an inert atmosphere with a sulfurizing agent. Common sulfurizing agents include elemental S, CS 2 dimethyl disulfide, SO 2 , and Na 2 S. These sulfurizing agents form many sulfur groups on the surface of carbon, including C-S, S-S, SvO, S 8 rings, S n chains, sulfoxides, thiophenes, or sulfone groups (Scheme 1).…”

Section: Introductionmentioning

confidence: 99%

Sulfur functionalized biocarbon sorbents for low-concentration mercury isolation

Austin,

Jahan,

Feng

et al. 2024

Dalton Trans.

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Section: Introductionmentioning

confidence: 99%

Sulfur functionalized biocarbon sorbents for low-concentration mercury isolation

Austin,

Jahan,

Feng

et al. 2024

Dalton Trans.

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“…Several studies have described the preparation of sulfurized activated carbon from commercial activated carbon or porous carbon by rapid pyrolysis or chemical pyrolysis. These studies use pyrolysis in H 2 S or SO 2 for the removal of heavy metals such as zinc, lead, cadmium, copper, and mercury from aqueous solutions [11][12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Conversion of Waste Paper Sludge into Heavy Metal Adsorbent Using Sulfur Impregnation

Wajima

2013

AMR

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During the manufacture of recycled paper, paper sludge is discharged as an industrial waste. The amount of sludge discharged from manufacturing plants increases annually. In this study, the organic constituents, such as cellulose, in the sludge were converted into carbonaceous heavy metal absorbents using sulfur treatment. Paper sludge was washed with 5 M HCl solution to remove inorganic content, and then immersed in 1 M K2S solution for 24 h. After immersion, the sample was heated at 800 °C for 1 h under N2 atmosphere, and then cooled to room temperature to obtain the product. The sludge was mainly composed of inorganic content, such as calcite, kaolinite and talc, and organic content. Calcite was removed with acid washing and sulfur was impregnated into the sludge by immersing it into the K2S solution. The product with sulfur impregnation indicated higher removal abilities for lead and nickel than those without sulfur impregnation.

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“…Sulfurization by treatment with SO 2 or H 2 S also may have a destructive effect on porosity but may, for example, considerably increase the sorption capacity for mercury [76,166].…”

Section: Modificationmentioning

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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Study of sulfur introduction in activated carbon

Cited by 35 publications

References 14 publications

Sulfur functionalized biocarbon sorbents for low-concentration mercury isolation

Sulfur functionalized biocarbon sorbents for low-concentration mercury isolation

Conversion of Waste Paper Sludge into Heavy Metal Adsorbent Using Sulfur Impregnation

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

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