scholarly journals Release of gold (Au), silver (Ag) and cerium dioxide (CeO2) nanoparticles from sewage sludge incineration ash

2021 ◽  
Author(s):  
Jonas Wielinski ◽  
Alexander Gogos ◽  
Andreas Voegelin ◽  
Christoph R. Müller ◽  
Eberhard Morgenroth ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Sewage Sludge ◽  
Cerium Dioxide ◽  
Ceo2 Nanoparticles ◽  
Engineered Nanoparticles ◽  
Sewage Sludge Ash ◽  
Sludge Incineration ◽  
Sludge Ash

Conservative engineered nanoparticles (ENPs) that resist transformation during wastewater treatment and sludge incineration can be released from sewage sludge ash. Transient ENPs that undergo transformation are retained in the sewage sludge ash.

scholarly journals Phosphorus cycle - possibilities for its rebuilding.

1970 ◽  
Vol 60 (4) ◽  
Author(s):  
Katarzyna Gorazda ◽  
Zbigniew Wzorek ◽  
Barbara Tarko ◽  
Anna K Nowak ◽  
Joanna Kulczycka ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Extraction Methods ◽  
Phosphorus Recovery ◽  
Acid Extraction ◽  
Phosphorus Cycle ◽  
Sewage Sludge Ash ◽  
Sludge Incineration ◽  
Phosphorus Form ◽  
Sludge Ash ◽  
The Right

The rebuilding of the phosphorus cycle can be performed with the use of both biotechnology and chemical technology. This paper presents a review of the phosphorus cycle and the different approaches that can be taken to the recovery of phosphorus from phosphate-rich waste. Critical issues in the phosphorus cycle are also discussed. Methods for the recovery of phosphorus form sewage sludge ash are widely explored and divided into two groups: wet extraction methods and thermochemical methods. Laboratory-scale methods are described, as well as proposed industrial technologies, with particular regard to the possibilities for their implementation in Poland. Phosphorus recovery methods from SSA (sewage sludge ash) in our country seems to be promising due to the increasing number of sewage sludge incineration plants, which could easily supply ash to future recovery installations. For the effective recovery of P from sewage sludge ash, it is essential to make the right choice in determining the appropriate method to use with respect to the particular properties of the ash composition available. A patented method of phosphorus recovery by acid extraction methods, developed by Cracow University of Technology, results in an efficiency of 80-96% for phosphorus recovery. 3000 to 4000 tons of phosphorus per year can be recycled and introduced back into the environment, that covers around 7% of the total amount of phosphorus ore imported into Poland between 2008 and 2009.

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%.

Effect of NaCl and MgCl2 on the hydration of lime-pozzolan blend by recycling sewage sludge ash

2021 ◽  
pp. 127759
Author(s):  
Yifan Zhou ◽  
Jianxin Lu ◽  
Jiangshan Li ◽  
Chris Cheeseman ◽  
Chi Sun Poon
Keyword(s):  
Sewage Sludge ◽  
Sewage Sludge Ash ◽  
Sludge Ash

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

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 3863
Author(s):  
Deng-Fong Lin ◽  
Wei-Jhu Wang ◽  
Chia-Wen Chen ◽  
Kuo-Liang Lin
Keyword(s):  
Wear Resistance ◽  
Sewage Sludge ◽  
Water Absorption ◽  
Ceramic Tile ◽  
Bending Strength ◽  
Bottom Ash ◽  
Waste Materials ◽  
Sewage Sludge Ash ◽  
Kiln Temperature ◽  
Sludge Ash

Municipal incinerator bottom ash (MIBA) and sewage sludge ash (SSA) are secondary wastes produced from municipal incinerators. Landfills, disposal at sea, and agricultural use have been the major outlets for these secondary wastes. As global emphasis on sustainability arises, many have called for an increasing reuse of waste materials as valuable resources. In this study, MIBA and SSA were mixed with clay for ceramic tile manufacturing in this study. Raw materials firstly went through TCLP (Toxicity Characteristic Leaching Procedure) to ensure their feasibility for reuse. From scanning electron microscopy (SEM), clay’s smooth surface was contrasted with the porous surface of MIBA and SSA, which led to a higher water requirement for the mixing. Specimens with five MIBA mix percentages of 0%, 5%, 10%, 15%, and 20% (wt) and three SSA mix percentages of 0%, 10%, and 20% (wt) were made to compare how the two waste materials affected the quality of the final product and to what extent. Shrinkage tests showed that MIBA and SSA contributed oppositely to tile shrinkage, as more MIBA reduced tile shrinkage, while more SSA encouraged tile shrinkage. However, as the kiln temperature reached 1150 °C, the SiO2-rich SSA adversely reduced the shrinkage due to the glass phase that formed to expand the tile instead. Both MIBA and SSA increased water tile absorption and reduced its bending strength and wear resistance. Increasing the kiln temperature could effectively improve the water absorption, bending strength, and wear resistance of high MIBA and SSA mixes, as SEM showed a more compact structure at higher temperatures. However, when the temperature reached 1100 °C, more pores appeared and seemingly exhausted the benefit brought by the higher temperature. Complex interactions between kiln temperature and MIBA/SSA mix percentage bring unpredictable performance of tile shrinkage, bending strength, and water absorption, which makes it very challenging to create a sample meeting all the specification requirements. We conclude that a mix with up to 20% of SSA and 5% of MIBA could result in quality tiles meeting the requirements for interior or exterior flooring applications when the kiln temperature is carefully controlled.

Determination of Phosphate Phases in Sewage Sludge Ash-Based Fertilizers by Raman Microspectroscopy

2013 ◽  
Vol 67 (9) ◽  
pp. 1101-1105 ◽  
Author(s):  
Christian Vogel ◽  
Christian Adam ◽  
Don McNaughton
Keyword(s):  
Sewage Sludge ◽  
Raman Microspectroscopy ◽  
Sewage Sludge Ash ◽  
Sludge Ash
Sign in / Sign up

Export Citation Format

Share Document