The effect of binders and agricultural by-products on physical and chemical properties of granular activated carbons

Pendyal, B.; Johns, Mitchell M.; Marshall, Wayne E.; Ahmedna, Mohamed; Rao, R. Shyama Prasad

doi:10.1016/s0960-8524(98)00153-9

Cited by 69 publications

(39 citation statements)

References 6 publications

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“…Activation mass yield, bulk density and textural properties of the RHBSACs were summarized in Table 1. The highest bulk density of 1.13 g/cm 3 was observed for the RHBSAC1.0, which was obtained from the one-step activation. The RHBSAC prepared using the two-step activation process displayed a larger BET SSA and a larger total pore volume than that prepared through the onestep activation (RHBSAC1.0).…”

Section: Resultsmentioning

confidence: 92%

“…Many researchers have attempted to produce RH-based porous materials by means of physical activation [3][4][5] and chemical activation [6][7][8]. A characteristic of the RH-based porous material is the simultaneous appearance of microporosity and mesoporosity resulting from carbon and silica, respectively [9].…”

Section: Introductionmentioning

confidence: 99%

“…However, it is difficult for ACs to attain both a highly textured structure and a high bulk density. Pendyal et al studied the bulk density and the textural properties of granular ACs produced from a RH and several types of binders [3]. They revealed that a sugar-based binder (a mass ratio of binder to RH : 1) was more useful than a conventional binder of coal tar and improved both properties.…”

Section: Introductionmentioning

confidence: 99%

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Dense Microporous and Mesoporous Activated Carbon Produced from Rice Husk and Beet Sugar

Aoki

Ishizawa

Kumagai

et al. 2010

Int.J.Soc.Mater.Eng.Resour.

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An activated carbon with a high microporosity and mesoporosity, as well as a high bulk density, was fabricated by activating the extrusion-molded precursor made from carbonized rice husk (RH) and beet sugar (BS) at 850℃ in CO 2 . The pore structure of the activated carbon based on the mixture of RH and BS (RHBSAC) was analyzed in relation to the bulk density. The extrusion molding was very useful to increase the bulk density. RHBSAC which was first activated for 1 h was immersed again in the BS syrup and then activated in CO 2 for 2 h. This two-step activation process provided both a high bulk density (0.93 g/cm 3 ) and a microporous and mesoporous structure (BET specific surface area: 844 m 2 /g, total pore volume: 0.53 cm 3 /g, micropore volume: 0.29 cm 3 /g, and mesopore volume: 0.19 cm 3 /g).

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Section: Resultsmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dense Microporous and Mesoporous Activated Carbon Produced from Rice Husk and Beet Sugar

Aoki

Ishizawa

Kumagai

et al. 2010

Int.J.Soc.Mater.Eng.Resour.

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“…It is known that small amounts of inorganic material in biomass are sufficient to alter pyrolysis behavior along with organic composition to a large extent and can contribute to higher biochar yields [13]. However, high ash content is normally not desirable and is considered an impurity because it can reduce carbon hardness [17]. Furthermore, upon leaching it can interfere with carbon adsorption through competitive adsorption, catalysis of adverse reactions, and blockage of carbon pores [18].…”

Section: Introduction Tmentioning

confidence: 99%

Selective Release of Inorganic Constituents in Broiler Manure Biochars under Different Post-Activation Treatments

Lima¹,

Klasson²,

Uchimiya³

2016

JRST

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Poultry-litter activated biochars (PLAB) with enhanced metals adsorption may contain significant amounts of inorganic material. This study traces key elements (Ca-Fe-K-Mg-Na-P) from litter to PLAB and selective fate upon acid/water treatments. Samples were pyrolyzed 1 hr/700°C, steam-activated 45 min/800°C, and acid washed/ rinsed. Mineral composition concentrated during pyrolysis/activation. Acid wash/water treatments removed unbound inorganics with highest extraction for K (37-100%) and Na (27-49%) and lowest for Fe (0-0.02%). Remaining elements leached significantly less indicating selective removal as influenced by composition and pyrolysis/activation effects on solubility. Heavy metals concentrated upon activation with negligent leaching regarding treatment. Post-activation treatments may improve usability of PLAB in wastewater applications by avoiding unwanted elemental leaching without compromising functionality.

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“…It is shown that vacuum pyrolysis avoids pore blocking which results in higher surface areas. The effect of binders and pressing conditions on the production of granulated activated carbons are worked out in (Ahmedna et al, 2000;Pendyal et al, 1999). Straw matters and binders from agricultural byproducts like molasses from sugarcane and sugar beet, corn syrup and coal tar were mixed and pressed prior to pyrolysis and CO 2 activation.…”

Section: Introductionmentioning

confidence: 99%

Activated Carbon from Waste Biomass

Schröder¹,

Thomauske²,

Oechsler³

et al. 2011

Progress in Biomass and Bioenergy Production

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The effect of binders and agricultural by-products on physical and chemical properties of granular activated carbons

Cited by 69 publications

References 6 publications

Dense Microporous and Mesoporous Activated Carbon Produced from Rice Husk and Beet Sugar

Dense Microporous and Mesoporous Activated Carbon Produced from Rice Husk and Beet Sugar

Selective Release of Inorganic Constituents in Broiler Manure Biochars under Different Post-Activation Treatments

Activated Carbon from Waste Biomass

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