scholarly journals Removal of nickel and cadmium from aqueous solutions by sewage sludge ash: Study in single and binary systems

2009 ◽  
Vol 30 (6) ◽  
pp. 561-570 ◽  
Author(s):  
Z. Elouear ◽  
J. Bouzid ◽  
N. Boujelben
Keyword(s):  
Sewage Sludge ◽  
Aqueous Solutions ◽  
Binary Systems ◽  
Sewage Sludge Ash ◽  
Single And Binary Systems ◽  
Sludge Ash

scholarly journals Using Sewage Sludge Ash as an Efficient Adsorbent for Pb (II) and Cu (II) in Single and Binary Systems

Molecules ◽  
2020 ◽  
Vol 25 (11) ◽  
pp. 2559 ◽  
Author(s):  
Bogdan Adrian Militaru ◽  
Rodica Pode ◽  
Lavinia Lupa ◽  
Winfried Schmidt ◽  
Agnes Tekle-Röttering ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Binary Systems ◽  
Kinetic Studies ◽  
Environmental Benefits ◽  
Maximum Adsorption Capacity ◽  
Sewage Sludge Ash ◽  
Single And Binary Systems ◽  
Sludge Ash ◽  
Heavy Metal Ions Removal ◽  
Efficient Adsorbent

Incineration of sewage sludge produces every year huge amounts of sewage sludge ash. Due to its porosity and composition, sewage sludge ash can be used as an adsorbent for heavy metal ions removal. The present paper discusses the efficiency and feasibility of its use as an adsorbent for Pb (II) and Cu (II) removal in single and binary systems. Sewage sludge ash dosage, pH influence, equilibrium and kinetic studies were examined. The results show that sewage sludge ash is an effective and environmentally friendly adsorbent. The maximum adsorption capacity was 25.0 mg/g for Pb (II) and 7.5 mg/g for Cu (II). The presence of the competitive metal led to lower adsorption rate. The study concludes that sewage sludge ash is a promising adsorbent for Pb (II) and Cu (II) removal from wastewater presenting both economic and environmental benefits.

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.

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