Production of metakaolin from industrial cellulose waste

Melo, Carolina Resmini; Angioletto, Elídio; Riella, Humberto Gracher; Peterson, Michael; Rocha, Márcio Roberto da; Melo, Aline Resmini; Silva, Luciano; Strugale, Susane

doi:10.1007/s10973-011-1892-z

Cited by 14 publications

(4 citation statements)

References 17 publications

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“…However, PS is mostly disposed in open landfills with no further treatment, which is a growing problem especially for highly developed countries. Recently, we observed some tries to use PS as an additive to cement [ 281 ], metakaolin for the production of ceramics and glass [ 282 ], fuel for energy recovery [ 283 , 284 ], and carbon adsorbent for removing organic pollutants [ 285 ], thus reducing the amount of PS disposed in landfills.…”

Section: A New Concept(s) For the Production And Management Of Fluori...mentioning

confidence: 99%

Management of Solid Waste Containing Fluoride—A Review

2022

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Technological and economic development have influenced the amount of post-production waste. Post-industrial waste, generated in the most considerable amount, includes, among others, waste related to the mining, metallurgical, and energy industries. Various non-hazardous or hazardous wastes can be used to produce new construction materials after the “solidification/stabilization” processes. They can be used as admixtures or raw materials. However, the production of construction materials from various non-hazardous or hazardous waste materials is still very limited. In our opinion, special attention should be paid to waste containing fluoride, and the reuse of solid waste containing fluoride is a high priority today. Fluoride is one of the few trace elements that has received much attention due to its harmful effects on the environment and human and animal health. In addition to natural sources, industry, which discharges wastewater containing F− ions into surface waters, also increases fluoride concentration in waters and pollutes the environment. Therefore, developing effective and robust technologies to remove fluoride excess from the aquatic environment is becoming extremely important. This review aims to cover a wide variety of procedures that have been used to remove fluoride from drinking water and industrial wastewater. In addition, the ability to absorb fluoride, among others, by industrial by-products, agricultural waste, and biomass materials were reviewed.

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Section: A New Concept(s) For the Production And Management Of Fluori...mentioning

confidence: 99%

Management of Solid Waste Containing Fluoride—A Review

2022

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“…The amount and the composition of paper sludge waste (PSW) vary widely depending on the grade of paper produced, the raw materials used, the processing techniques applied and the percentage and characteristics of the recycled paper used, among others [34]. According to the chemical composition of dry PSW found in the literature and given in Table 1 [13,[34][35][36][37][38][39][40][41], the main constituents of PSW are CaO, SiO 2 and Al 2 O 3. Note that the sum of these oxides account for over 43% of the total in all but one case, an Australian de-inking sludge analysed by Yan et al [41], where the combined content is only 23% due to the presence of titanium oxide as the main component (13.2%).…”

Section: Characterisation Of De-inked Paper Sludgementioning

confidence: 99%

“…2), with temperatures of 500-900°C and retention times of 2-5 h. As a result of the foregoing, the chemical composition of activated paper sludge (APS) varies, as shown in Table 3. The majority silica, alumina and calcium oxide content may range from 11-44%, 8-29% and 4-54%, respectively [15,18,40,[55][56][57][58][59][60][61][62][63][64][65][66]. This variability of oxides in paper sludge wastes is directly related to the limestone/kaolinite ratio and the percentage of recycled paper used as raw material in the process.…”

Section: Activation and Mineralogical Modificationsmentioning

confidence: 99%

Paper sludge, an environmentally sound alternative source of MK-based cementitious materials. A review

Frías

Rodríguez

Rojas

2015

Construction and Building Materials

102

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“…The pozzolanic properties of metakaolin have been studied in depth in building material applications Murat 1983a, b;Murat and Comel 1983;Talero 1986;Glasser 1990, 1993). Metakaolin is obtained by calcining kaolin or paper industry waste (Resmini et al 2012), to which slaked lime is sometimes added (Murat 1983a, b;Murat and Comel 1983;de Silva and Glasser 1993). According to Talero (1986), chemically speaking, metakaolin is an aluminic pozzolan in chemical character [due to its high reactive alumina content, Al 2 O r− 3 (%)], although further to the provisions of ASTM C618-08 Standard (ASTM 2008), it is both siliceous and aluminous in nature.…”

Section: Introductionmentioning

confidence: 99%

Sulfate Resistance in OPC and SRPC Containing Calcined Paper Sludge Waste: Ettringite or Thaumasite Formation

Talero

Aramburo

González

et al. 2017

J. Mater. Civ. Eng.

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The Le Chatelier-Anstett test was used to study the sulfate resistance of cement pastes containing calcined paper sludge waste (MC). MC was blended with two types of portland cement (PC): P1 with and P2 without C 3 A (ordinary portland cement, OPC, and sulfateresistant portland cement, SRPC, respectively). The study of thaumasite formation required the utilization of a third PC, P3. The results showed that sulfate resistance always decreased at higher ratios of PC replacement by MC. This behavior was attributable to the expansive synergic effect (ESE), originated by the coprecipitation of ettringite from two resources in a gypsum and water medium. Part of the ettringite formed rapidly from the Al 2 O r− 3 in MC, and rapidly or slowly from the C 3 A in P1, depending on whether its early pozzolanic activity was sufficient or not. Rapid-forming ettringite of both origins was induced by the sufficient specific, fast, and early pozzolanic activity resulting in the indirect stimulation of sulfate-mediated P1 hydration (its C 3 A content especially) by the metakaolin present in the MC. Where such activity was insufficient, however, slow-forming ettringite was generated, reducing the ESE. The substantial calcite content in MC also played a very significant role in ESE, the result of the stimulation of such hydration, concomitant sulfate attack, and thaumasite formation. Stimulation was both direct (due to initial particle moistening by the mixing water) and nondirect (due, at the very outset, to the positive and negative electrostatic charge acquired by their particles during grinding and/or mixing, and subsequently, to the zeta potential originated as PC hydration progressed). Lastly, calcite (natural or synthesized in portlandite carbonation) was shown to be needed for thaumasite to form, a process not confined solely to low-temperature environments.

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Production of metakaolin from industrial cellulose waste

Cited by 14 publications

References 17 publications

Management of Solid Waste Containing Fluoride—A Review

Management of Solid Waste Containing Fluoride—A Review

Paper sludge, an environmentally sound alternative source of MK-based cementitious materials. A review

Sulfate Resistance in OPC and SRPC Containing Calcined Paper Sludge Waste: Ettringite or Thaumasite Formation

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