Morphochemical investigation on the enrichment and transformation of hazardous elements in ash from waste incineration plants

Date

2022-07-01

Author

Ali, Muhammad Ubaid
Liu, Yuan
Yousaf, Balal
Wong, Ming Hung
Li, Ping
Liu, Guijian
Wang, Ruwei
Wei, Yong
Lu, Muyuan

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

115
views

0
downloads

© 2022 Elsevier B.V.The transformation of heavy metals in ash from waste incineration plants is significant for ash management. The migration behavior of trace elements in ash after combustion, semidry deacidification, fabric filtration, and chelating agent stabilization was investigated from one waste incineration plant. The hazardous elements Zn, Pb, and As were enriched in raw fly ash (ash produced at a combustion temperature of 850–1100 °C) due to their relatively high volatility. Mercury, Cd, and Pb were captured in fly ash2 and processed by activated carbon and fabric filters. The removal rate of As (71%) was the highest among all studied elements due to a large amount of quinquevalent As removed. However, the average removal rate of elements in fly ash was only 13%. In the finally obtained fly ash3 (after chelating agent stabilization), a larger particle size (~100 μm) was found than that of raw ash. Furthermore, fly ash3 contains HgSO4 and trivalent As, which are toxic and likely to be precipitated when the fly ash3 is next utilized or deposited in a landfill, causing environmental risks.

Subject Keywords

Chemical speciation, Hazardous elements, Migration mechanism, Waste incineration plants

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85126511950&origin=inward
https://hdl.handle.net/11511/97467

Journal

Science of the Total Environment

DOI

https://doi.org/10.1016/j.scitotenv.2022.154490

Collections

Department of Environmental Engineering, Article

Suggestions

OpenMETU
Core

Geotechnical Assessment of Compacted Sand Bentonite Mixtures to be Utilized in Underground Nuclear Waste Repositories and Barrier Design Akgün, Haluk; Koçkar, Mustafa Kerem (2016-07-01) This study assesses the mechanical and hydrological performance of compacted sand bentonite mixtures to be utilized in sealing underground nuclear waste repositories. In order to assess the performance of this material and to obtain an optimum sand bentonite mixture, a variety of laboratory tests, namely, compaction, falling head permeability, swelling, unconfined compression and shear strength tests were performed on sand bentonite mixtures possessing bentonite contents ranging from 5% to 15%. Sand bentoni...
In situ synthesis of micro-plastics embedded sewage-sludge co-pyrolyzed biochar: Implications for the remediation of Cr and Pb availability and enzymatic activities from the contaminated soil Mujtaba Munir, Mehr Ahmed; Yousaf, Balal; Ali, Muhammad Ubaid; Dan, Chen; Abbas, Qumber; Arif, Muhammad; Yang, Xiaoe (2021-06-15) Careful designing of biochar (BC) employing biological and industrial waste materials has gained much attention to improve soil health via reducing the bioavailability of heavy metals (HMs) in the contaminated-soil. Herein, a forty-day pot experiment was conducted to explore the influence of micro-plastic (MP) embedded sewage-sludge (SS). The effects of SS and MP dosage ratios (0–15%) on the physicochemical properties of the modified-biochars were also studied with slow-pyrolyzed (SBC-500 °C) and flash-pyro...
EVALUATION OF PYRITIC TAILINGS FROM A COPPER CONCENTRATION PLANT FOR CALCAREOUS SODIC SOIL RECLAMATION TOZSİN, Gülşen; Arol, Ali İhsan; ÇAYCI, GÖKHAN (2014-01-01) This study was aimed to investigate the feasibility to use waste pyrite and sulphuric acid produced from waste pyrite for the reclamation of calcareous sodic soils. The final aim is to displace Na from an exchange complex and replace it with Ca, leading to a decrease in pH and exchangeable sodium percentage (ESP) and an improvement of soil structure. A fertility of the soil may also be enhanced by this technique since waste pyrite can be rich in several micronutrients. An additional advantage to this strate...
Anaerobic treatability and biogas production potential of pistachio processing wastewater with upflow anaerobic sludge blanket (uasb) reactor Gür, Eray; Demirer, Göksel Niyazi; Department of Environmental Engineering (2016) Agro-industrial wastes cannot be treated in conventional wastewater treatment plants due to high organic contents. However, they have a high potential as renewable energy resources, and can be converted into valuable end products via application of appropriate treatment technologies. Anaerobic digestion (AD) is a process which converts organic materials into methane and carbon dioxide in the absence of oxygen. Therefore, wellestablished anaerobic biotechnologies, such as up-flow anaerobic sludge blanket (UA...
The fate of toluene, acetone and 1,2-dichloroethane in a laboratory-scale simulated landfill Sanin, Faika Dilek; Barlaz, MA (2000-08-01) The objective of this research was to study the fate of toluene, acetone and 1,2- dichloroethane (DCA) in refuse excavated from a municipal solid waste landfill contaminated with organic solvents. Refuse excavated from the landfill was used to fill multiple 8-1 simulated landfill reactors that were operated with and without moisture addition to simulate the absence and presence of an engineered cover, respectively. An average of 31.3% of the added C-14-toluene was converted to (CH4)-C-14 and (CO2)-C-14 in r...

Citation Formats

M. U. Ali et al., “Morphochemical investigation on the enrichment and transformation of hazardous elements in ash from waste incineration plants,” Science of the Total Environment, vol. 828, pp. 0–0, 2022, Accessed: 00, 2022. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85126511950&origin=inward.