scholarly journals Properties of concrete containing microwaved sewage sludge ash

2021 ◽  
Vol 15 (4) ◽  
pp. 8469-8479
Author(s):  
M.A. Azed ◽  
D.S. Ing
Keyword(s):  
Mechanical Properties ◽  
Sewage Sludge ◽  
Modulus Of Elasticity ◽  
Strength Test ◽  
Sewage Sludge Ash ◽  
X Ray ◽  
Sludge Waste ◽  
Water Curing ◽  
Sludge Ash

Urban population of Malaysia is stated as 72.8% of its total population, and growing every year. Due to this growing number of population, the sewage sludge waste produce every year has also gradually increased. Malaysia itself produces 3.2 million m3 of sewage sludge annually. Normally all of this waste is disposed by landfill. Furthermore, usual production of cement and sewage sludge ash consumes a lot of energy by using incineration process with a very high temperature. Thus, microwave heating method was an alternatives use in this research to reduce the consumption of energy and time used to heat the sewage sludge ash. This research was conducted to investigate the optimum performances of different percentage (0%, 5%, 10%, 15% and 20%) by weight of cement of the Microwaved Sewage Sludge Ash (MSSA) concrete with different curing regime, which was air and water curing. The characteristic of MSSA was tested by X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). The mechanical properties of MSSA concrete was examined by Compressive Strength test, Flexural Strength test and Modulus of Elasticity test after 180 days of curing. The MSSA samples were also tested with water absorption test to evaluate the quality of concrete in term of porosity and permeability. Water curing sample with 5% of MSSA (W5) had the best in results compared to other specimens. The mechanical properties of W5 content in concrete shows the most optimum samples due to the densification of pozzolanic reaction and filler effect of MSSA. The curing effect with better result was water curing, as it got highest value of strength in compressive test, flexural test and modulus of elasticity test. As conclusion, based on the results, it is shown the positive impact on using the MSSA as additional material to the cement mixture to improve the quality of the concrete. Thus, this will reduce the disposal of sewage sludge waste on dumping site and improves the quality performances of the concrete.

Nanocrystalline and stacking-disordered β-cristobalite AlPO4: the now deciphered main constituent of a municipal sewage sludge ash from a full-scale incineration facility

2015 ◽  
Vol 30 (S1) ◽  
pp. S31-S35 ◽  
Author(s):  
B. Peplinski ◽  
C. Adam ◽  
B. Adamczyk ◽  
R. Müller ◽  
M. Michaelis ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Fluidized Bed ◽  
Large Scale ◽  
Sodium Hydroxide Solution ◽  
Direct Proof ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Sewage Sludge Ash ◽  
X Ray ◽  
Sludge Ash

For the first time evidence is provided that a nanocrystalline and stacking-disordered, chemically stabilized β-cristobalite form of AlPO4 occurs in a sewage sludge ash (SSA). This proof is based on a combined X-ray powder diffraction and X-ray fluorescence investigation of an SSA produced at a large-scale fluidized bed incineration facility serving a catching area with a population of 2 million. The structural and chemical characterization was carried out on ‘as received’ SSA samples as well as on solid residues remaining after leaching this SSA in sodium hydroxide solution. Thus, it was ascertained that the observed nanocrystalline and stacking-disordered cristobalite-like component belongs to the aluminum phosphate component of this SSA, rather than to its silicon dioxide component. In addition, a direct proof is presented that the chemically stabilized β-cristobalite form of AlPO4 does crystallize from X-ray amorphous precursors under conditions that mimic the huge heating rate and short retention time (just seconds at T ≈ 850°C), typical for fluidized bed incinerators.

scholarly journals Applying Mixture of Municipal Incinerator Bottom Ash and Sewage Sludge Ash for Ceramic Manufacturing

2021 ◽  
Author(s):  
Deng-Fong Lin ◽  
Wei-Jhu Wang ◽  
Chia-Wen Chen ◽  
Kuo-Liang Lin
Keyword(s):  
Sewage Sludge ◽  
Bottom Ash ◽  
Waste Materials ◽  
Sewage Sludge Ash ◽  
Ceramic Manufacturing ◽  
Sludge Ash

Two secondary waste materials, municipal incinerator bottom ash (MIBA) and sewage sludge ash (SSA), were mixed with clay for ceramic manufacturing in this study. Specimens with 5 different MIBA replacement amount of 0%, 5%,10%, 15%, and 20%(wt) and 3 different SSA replacement amount of 0%, 10%, and 20%(wt) were prepared and then a series of tests and analysis were conducted to investigate how the two materials affect the quality of the final product and to what extent. It concludes that a mix with up to 20% of SSA and 5% of MIBA could result in quality tiles complying with specifications for interior or exterior flooring applications at certain kiln temperatures.

Full scale application of manufacturing bricks from sewage

1997 ◽  
Vol 36 (11) ◽  
pp. 243-250 ◽  
Author(s):  
Nagaharu Okuno ◽  
Shiro Takahashi
Keyword(s):  
Sewage Sludge ◽  
Full Scale ◽  
Public Works ◽  
Firing Process ◽  
Manufacturing Cost ◽  
High Moisture ◽  
Sewage Sludge Ash ◽  
History Of ◽  
Sludge Ash

Brick making from 100 percent of incinerated sewage sludge ash is developed. There are already 8 full scale plants in Japan. All of them employ high pressure molding of incinerated sewage sludge ash and firing at about 1000°C. The end products are widely accepted for public works such as flooring of plazas or pedestrian walk ways. Early in the history of the development, overall quality of the sewage brick was not competitive. They were subject to get moss growth on the surface because of its high moisture content, or whitening because of leaching of Calcium Carbonate. The problems were solved by increasing the temperature of the firing process and by chemical coating. The manufacturing cost of one sewage brick is around two dollars and the retail price is one dollar.

scholarly journals Fertiliser from sewage sludge ash instead of conventional phosphorus fertilisers?

2018 ◽  
Vol 64 (No. 10) ◽  
pp. 504-511 ◽  
Author(s):  
Jastrzębska Magdalena ◽  
Kostrzewska Marta ◽  
Treder Kinga ◽  
Makowski Przemysław ◽  
Saeid Agnieszka ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Renewable Resources ◽  
Wheat Yield ◽  
Field Trials ◽  
Sewage Sludge Ash ◽  
Wheat Field ◽  
Sanitary Condition ◽  
Sludge Ash ◽  
By Products

Recycling of phosphorus (P) from municipal waste for the use as a fertiliser can be an alternative to the non-renewable resources of this element as well as a method in the management of civilisation by-products that are a burden to the environment. An innovative phosphorus suspension fertiliser, produced on the basis of ash from incineration of sewage sludge and phosphorus solubilising bacteria Bacillus megaterium was compared in field trials with spring wheat conducted in 2014 and 2015 with superphosphate and phosphorite. The new fertiliser was not inferior to the commercial fertilisers in terms of the effect on wheat yield volumes, the uptake of P by wheat and the sanitary condition of the wheat field, especially when grown protected from weeds, pathogens and pests. It is expected that such a fertiliser can be an alternative to fertilisers produced from non-renewable resources, provided it does not deteriorate the quality of agricultural production and will be safe for the environment.

scholarly journals Use of Sewage Sludge Ash in the Production of Innovative Bricks—An Example of a Circular Economy

2021 ◽  
Vol 13 (16) ◽  
pp. 9330
Author(s):  
Andelina Bubalo ◽  
Drazen Vouk ◽  
Nina Stirmer ◽  
Karlo Nad
Keyword(s):  
Mechanical Properties ◽  
Wastewater Treatment ◽  
Sewage Sludge ◽  
Circular Economy ◽  
Wastewater Treatment Plants ◽  
Physical And Mechanical Properties ◽  
Laboratory Scale ◽  
Sewage Sludge Ash ◽  
Clay Bricks ◽  
Sludge Ash

In this paper the properties of clay bricks with 5 wt%, 10 wt%, and 20 wt% sewage sludge ash (SSA) were studied and compared with the properties of control bricks made of 100% clay. Sewage sludge (SS) was collected at two wastewater treatment plants (WWTPs) in Croatia—WWTP Zagreb and WWTP Karlovac—and incinerated at a temperature of 900 °C The bricks were produced on a laboratory scale. A total of seven types of bricks were produced—control bricks and six types of bricks as combinations of different wt% of SSA generated from SS that was collected at two different WWTPs. The physical and mechanical properties of produced bricks were tested. Compressive strengths of bricks with 5 wt% SSA (54.0–54.5 N/mm2) and 10 wt% SSA (50.2–51.0 N/mm2) were higher compared to the control bricks (50.4 N/mm2), while bricks with 20 wt% SSA (37.0–43.9) N/mm2) had noticeably lower compressive strenght. The coefficient of saturation was lower for bricks with SSA compared to control bricks. The initial absorption values were more pronounced for SSA fractions of 20 wt%.

Pengaruh Tekanan dan Penggunaan Conplast terhadap Sifat Mekanik Eternit dari Abu Cangkang Sawit

2016 ◽  
Vol 8 (15) ◽  
pp. 47-54
Author(s):  
Haspiadi Haspiadi
Keyword(s):  
Mechanical Properties ◽  
Oil Palm ◽  
Modulus Of Elasticity ◽  
Modulus Of Rupture ◽  
Palm Shell ◽  
Oil Palm Shell ◽  
Density Values ◽  
Test Result

The purpose of this research is to know the influence of pressure and use of conplast against mechanical properties which are a Modulus of Elasticity (MOE) and Modulus of Rupture (MOR) of plasterboard. The study is done because still low quality of plasterboard made from a mixture of ashes of oil-palm shell especially of the mechanical properties compared to the controls. The method of this reserach used variation of printed pressure and the addition of conplast. Test result is obtained that the highest value of Modulus of Elasticity (MOE) 90875.94 Kg/cm2, Modulus of Rupture (MOR) 61.16 Kg/cm2 and density values in generally good printed at the pressure 60 g/cm3 and the addition of conplast 25% as well as the composition of the ash of palm shell oil 40%: limestone 40%: cement 15%: fiber 5% and 300 mL of water. ABSTRAK Tujuan dari penelitian ini adalah untuk mengetahui pengaruh tekanan dan penggunaan conplast terhadap sifat mekanik yaitu kuat lentur dan keteguhan patah eternit berbahan dasar abu cangkang sawit. Penelitian ini dilakukan karena masi rendahnya mutu eternit berbahan campuran abu cangkang sawit dari bolier khususnya sifat mekanik dibandingkan dengan kontrol. Metode penelitian yang digunakan adalah dengan variasi tekanan cetak dan penambahan conplast. Hasil uji diperoleh bahwa kuat lentur tertinggi sebesar 90875,94 Kg/cm2 dan keteguhan patah sebesar 61,16 Kg/cm2, yang dicetak pada tekanan 60 g/cm3 dan penambahan conplast 25% dengan komposisi  abu cangkang sawit 40 %: kapur 40 % : semen 15 %: serat 5 % dan air 300 mL.Kata Kunci :  Abu cangkang sawit, conplast, kuat lentur, keteguhan patah.

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