Removal of Heavy Metals from Wastewater Using Sewage Sludge Ash (SSA) as Adsorbent

2017 ◽  
Author(s):  
Safaa Ragheb
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Sewage Sludge Ash ◽  
Removal Of Heavy Metals ◽  
Sludge Ash

Kinetic study of heavy metals Cu and Zn removal during sewage sludge ash calcination in air and N 2 atmospheres

2018 ◽  
Vol 347 ◽  
pp. 227-232 ◽  
Author(s):  
Rundong Li ◽  
Zhenyu Zhai ◽  
Yanlong Li ◽  
Tianhua Yang ◽  
Yang Chen
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Kinetic Study ◽  
Sewage Sludge Ash ◽  
Sludge Ash ◽  
Cu And Zn

Electrodialytic Separation of Phosphorus and Heavy Metals from Two Types of Sewage Sludge Ash

2014 ◽  
Vol 49 (12) ◽  
pp. 1910-1920 ◽  
Author(s):  
Lisbeth M. Ottosen ◽  
Pernille E. Jensen ◽  
Gunvor M. Kirkelund
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Sewage Sludge Ash ◽  
Sludge Ash

scholarly journals The immobilisation of heavy metals from sewage sludge ash in geopolymer mortars

2020 ◽  
Vol 322 ◽  
pp. 01026
Author(s):  
Mateusz Sitarz ◽  
Tomasz Zdeb ◽  
João Castro Gomes ◽  
Erick Grünhäuser Soares ◽  
Izabela Hager
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Municipal Wastewater ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Fluidised Bed ◽  
The European Union ◽  
Sewage Sludge Ash ◽  
Sludge Ash

Sewage sludge is a semi-solid waste material created as a result of the sewage treatment of industrial or municipal wastewater. Because the laws and regulations of the European Union require not only a reduction in waste generation but also the preparation of waste for reuse and disposal, it is necessary to look for new methods of the application of sewage sludge as part of sustainable waste management. In this study, ash formed as a result of the combustion of sewage sludge from the sewage treatment plant in Płaszów, Krakow in a fluidised bed furnace at a temperature of around 800°C was used. Sewage sludge ash (SSA) contains over 30% SiO2 and approx. 10% Al2O3, which indicates potential applications in geopolymer materials. In this study, samples of geopolymer mortars with a binder containing sewage sludge ash as well as fly ash (FA) and ground granulated blast furnace slag (GGBFS) were prepared. The mechanical parameters were determined after 2, 7, 14, and 28 days. The results show that the sewage sludge ash-based geopolymer shows binding properties at ambient temperature and, depending on the presence of FA and/or GGBFS, the compressive strength varies from 5 to 45 MPa after 28 days. The aim of the research was also to determine the total content of heavy metals (Sb, As, Cr, Cd, Cu, Ni, Pb, Hg, Zn) in the raw materials used and their leachability from the structure of the hardened materials. Immobilisation of heavy metals is very promising. Based on the results of tests, it seems possible to use SSA in geopolymer materials, but not as the main component of the binder.

Potentials of using nanofiltration to recover phosphorus from sewage sludge

2008 ◽  
Vol 57 (5) ◽  
pp. 707-714 ◽  
Author(s):  
C. Niewersch ◽  
C. N. Koh ◽  
T. Wintgens ◽  
T. Melin ◽  
C. Schaum ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Product Recovery ◽  
Phosphorus Recovery ◽  
Nanofiltration Membranes ◽  
Sewage Sludge Ash ◽  
Model Solutions ◽  
Treated Sewage ◽  
Increasing Demand ◽  
Sludge Ash

Due to the depletion of mineral phosphorus resources there is an increasing demand for efficient phosphorus recovery technologies. In this study the potential of nanofiltration to recover phosphorus from pre-treated sewage sludge is investigated. The efficiency of three commercial nanofiltration membranes (Desal 5DK, NP030; MPF34) was tested using model solutions. Desal 5DK showed the best selectivity for phosphorus. A pH of lower than 1.5 was found to be most suitable. Desal 5DK was used on four different sewage sludge ash eluates and on one sewage sludge. In these experiments it was shown that a separation of phosphorus from undesired components such as heavy metals was possible with significant variations in the efficiency for the different ash and sludge types. Additionally the achievable product recovery was investigated with model solutions. A product recovery of 57.1% was attained for pH 1 and 41.4% for pH 1.5.

scholarly journals The Ecological Risk Assessment and the Chemical Speciation of Heavy Metals in Ash after the Incineration of Municipal Sewage Sludge

2020 ◽  
Vol 12 (16) ◽  
pp. 6517 ◽  
Author(s):  
Jolanta Latosińska ◽  
Przemysław Czapik
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Sewage Sludge ◽  
Soil Contamination ◽  
Ecological Risk ◽  
Ecological Risk Assessment ◽  
Risk Index ◽  
Soil Environment ◽  
Sewage Sludge Ash ◽  
Sludge Ash

Popular incineration of sewage sludge results in the increase in heavy metals content in ash. The knowledge of the total content of heavy metals in sewage sludge ash does not demonstrate a potential hazard. The toxicity of heavy metals in great measure depends on the form of their occurrence. The prevailing norms do not require the ecological risk assessment of the environmental burden with heavy metals for the choice of the method of the utilization of sewage sludge ash. The paper presents the research results on the mobility of heavy metals in sewage sludge ash after its incineration. The geo-accumulation index (IGAI), the potential ecological risk index (PERI) and the risk assessment code (RAC) were used for the evaluation of the potential soil contamination with heavy metals. The authors also suggested a new formula, which took into consideration more factors influencing the risk of the contamination of a water-soil environment with heavy metals—the water and soil environment risk index (WSERI). The calculated indices for sewage sludge ash indicate the risk of soil contamination with heavy metals.

Comparison of two different electrodialytic cells for separation of phosphorus and heavy metals from sewage sludge ash

Chemosphere ◽  
2015 ◽  
Vol 125 ◽  
pp. 122-129 ◽  
Author(s):  
Benjamin Ebbers ◽  
Lisbeth M. Ottosen ◽  
Pernille E. Jensen
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Sewage Sludge Ash ◽  
Sludge Ash
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