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G. Fava M. Ruello V. Corinaldesi. Environmental Science, Engineering. 2010. Paper mill sludge is often incinerated for heat recovering and also for an important volume reduction. In Italy about 6x10 5 tons of paper sludge is yearly produced giving 60kg of paper ash per ton.…. Expand. 77. PDF.
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Bottom ash from coal burning and calcined paper sludge were used as raw materials. Both wastes were collected from a control lot. Sodium hydroxide (Vetec, 97% purity) and sodium silicate (Manchester Química do Brasil S.A., SiO 2 /Na 2 O = 3.3) were used as alkaline activators. The bottom ash was dried in a laboratory stove for 24 h at …
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Development of Paper Sludge Ash-Based Geopolymer and Application to Treatment of Hazardous Water Contaminated with Radioisotopes. Zhuguo Li, T. Ohnuki, …
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Studi Karakteristik Kuat Tekan Beton Geopolimer Berbahan Dasar Fly Ash. Hanafi Ashad, Muhammad Rezky Putra, Toni Utina. Published in Jurnal Teknik Sipil 21 December 2023. Pemanfaatan beton pada umumnya digunakan untuk membuat perkerasan jalan, struktur bangunan, pondasi, jalan, jembatan penyeberangan, struktur …
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Paper sludge increased the reactivity of bottom coal ash during the process of polymerization [35]. Waste paper sludge based geopolymer mortars can be used for masonry applications [36]. Mixing of recycled sludge and RHA has been used for the preparation of lightweight geopolymers [37].
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Fly ash-based geopolymers have emerged as a sustainable alternative in construction, leveraging industrial by-products to mitigate CO2 emissions. This study investigates the novel incorporation of drinking water treatment sludge (DWTS) into fly ash-based geopolymers at varying proportions (5–40%). Authors focus is to analyze the …
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Ambient temperature geopolymerization of paper sludge ashes (PS-ashes) discharged from paper mills was studied by means of scanning electron …
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57 Paper sludge ash (PSA) is a waste generated by the paper recycling industry. It is produced when dewatered 58 waste paper sludge, a by-product of the de-inking and re-pulping of paper, is combusted to reduce waste 59 volume and to produce energy. The combustion process is regulated in the EU and typically uses fluidised 60 bed …
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9,07 MPa (SS/SH=3,0) dan 8,05 MPa (SS/SH=3,5). The highest compressive strength is produced in. the variation of the SS/SH ratio of 2,5 with a value of 10,13 MPa. Keywords: geopolymer concrete ...
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The bottom ash and the calcined paper sludge were weighed and mixed and the sodium hydroxide and sodium silicate were added using a mechanical stirrer until complete homogenization of the mixture for about 5 min. The geopolymeric paste was poured into plastic containers (62.83 cm 3) and cured at room temperature.
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Sludge-based geopolymer materials: A review. Xiangqing Kong, Jiarong Shi, Yidan Shen, Wenjiao Zhang, Ying Fu. First published: 03 March 2024. …
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Paper sludge used in this study was obtained from one of the Kraft pulping mills in the USA. The chemical composition of the sludge used in this study is shown in Table 1.Biomass composition analysis of sludge was performed by the NREL procedure [11], and ash content of sludge was measured by TAPPI standard (T 211 om-02) …
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Abstract. This paper present the results of an experimental study on the clay soil stabilized using Waste Paper Sludge Ash (WPSA). WPSA considered as finely waste product resulting from the ...
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Paper sludge ash (PSA) is a waste generated by the paper recycling industry. I t is produced wh en dewatered 57. waste paper sludge, a by-product of the de-inking and re-pulping of paper, is ...
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The up to 10% increase in strength of geopolymer concrete containing fly ash and paper sludge ash shows that good prospects exist for the use of this type of concrete for cast …
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After ordinary Portland cement (OPC) concrete, geopolymer concrete (GPC) is the most advanced form of concrete. GPC has many advantages including improved strength and durability properties. High early age strength and ambient curing of GPC helps to reduce the construction time. Factors such as binder materials, alkali-activated …
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The flexural strength test were co nducted on beam specimens of size 2000 mm x 125mm x 250mm made by using fly ash and paper sludge ash and optimize percentage replacement of fly ash by paper ...
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Paper sludge ash (PSA) was partially converted into zeolites by reaction with 3 M NaOH solution at 90°C for 24 h. The PSA had a low abundance of Si and significant Ca content, due to the presence of calcite that was used as paper filler. Diatomite, which contains amorphous silica and dissolves easily in alkali solution, was mixed with the ash ...
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The compressive strength, splitting tensile strength, and bending strength values were tested and geopolymer microstructure was analysed. The up to 10% increase in strength of geopolymer concrete containing fly ash and paper sludge ash shows that good prospects exist for the use of this type of concrete for cast-in-situ applications.
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This paper present the results of an experimental study on the clay soil stabilized using Waste Paper Sludge Ash (WPSA). WPSA considered as finely waste product resulting from the combustion of wastepaper sludge in paper recycling factories waste paper. The WPSA used in this study has been tested and based on ASTM C618, WPSA classified …
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This paper aims to review the synthesis and preparation of geopolymer materials, the factors affecting the properties of geopolymer materials, and the …
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Paper sludge consists mainly of wet short cellulose fibers that are lost during papermaking and of residual chemicals used in the manufacturing process that remain dissolved in the water. Each ton of paper generates about 40–50 kg of dry sludge, of which 70% is primary sludge. Paper production, which exceeded 400 million tons globally in …
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Conversely, petroleum sludge ash is a hazardous waste generated by petroleum refineries and contains heavy metals, toxic organic compounds, and inorganic substances . It is classified as hazardous waste due to its potential harm to the environment and human health. This ash is usually disposed of in landfills or incinerated to reduce ...
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In this paper, zeolite is replaced with 5%, 7.5%, and 10% of fly ash to create geopolymer concretes. Zeolite powder obtained by the calcination process with the aid of sodium hydroxide and fly ash ...
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Husk Ash (RHA) and Waste Paper Sludge Ash (WPSA). To get rid of it in this specific location, the norm is to set it ablaze up above [17-18]. When we mention Rise Husk Ash (RHA) and Waste Paper Sludge Ash (WPSA) we are discussing the delicate threads that are derived from discarded substances like Rise Husk Ash (RHA) and Waste Paper …
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Long-term immobilization ratios of strontium (Sr2+) and cesium (Cs+) in paper sludge ash-based geopolymer (PS-GP) were investigated in one year. PS-GP paste specimens were prepared in the …
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Geopolymer was synthesized from paper sludge and bottom ash. • The alkaline activation solution consisted of sodium hydroxide and sodium silicate. • Paper …
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huge amount of incineration ash (so-called paper sludge ash, PS-ash in short in the present study) is discharged. Some studies have attempted the recycling of PS-ash; for instance, hydrothermal solidification to produce building materials, solidification materials of soft ground, coagulants for dredging, etc. [27–29].
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3.1. Paper Sludge Ash Paper Sludge ash (Fig.3.1) is the waste product obtained in the manufacture of paper from the paper mill industry. It imposes a major economic and environmental crisis in Paper and board industry as it's a waste product and imposes difficulty in dumping. Paper sludge is currently in use as an alternative fuel.
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Paper sludge ash, a cinder that is generated from the incineration process of paper sludge, is such an alternative sustainable material for dredging soil stabilization. The surface of paper sludge ash particle has a porous structure with many complex and irregular voids; therefore, paper sludge ash can absorb and retain excess water into its …
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Using waste as a resource to control phosphate pollution is a rising trend. This study describes the use of paper sludge (PS) and fly ash (FA), industrial solid wastes, to prepare materials with high phosphate uptake efficiency. The process consisted of pretreatment (mechanical milling), calcination, acidification (HCl), and post-treatment …
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The main intention of this work is to arrive the compression strength, split tension strength and volume of pores of the lime based geopolymer concrete with and …
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2.2 Waste Paper Sludge Ash (WPSA) The wastepaper sludge ash (WPSA) is a main additive to stabilize the soft soil was used in this study. This white WPSA was in a powder form is a waste product from the combustion of waste paper in paper recycling factories was obtained from Malaysia Newsprint Industries in Pahang, Malaysia.
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Effect of incinerated paper sludge ash on fly ash-based geopolymer concrete. October 2017. Gradevinar 69 (9):851-859. DOI: 10.14256/JCE.1864.2016. …
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Given that most of the P is transferred from wastewater to sludge (around 90%) [6], P has been found to be abundant in sewage sludge ash after incineration. Sewage sludge ash, therefore, is the ideal raw source for P-recovery in the form of phosphoric acid (H 3 PO 4). The selective P-recovery is of interest to many countries.
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It was found that paper sludge tends to be a fibrous admixture, bottom ash tends to replace sand to a certain extent, and fly ash is a replacement for cement. The cement industry is mugging up several dares, like bankrupting fossil fuel reserves, lack of raw materials, and an endlessly rising appeal for cement and concrete [14], [15].
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