Evaluation of sewage sludge incineration ash as a potential land reclamation material
- Authors
- Lin, Wenlin Yvonne; Ng, Wei Cheng; Wong, Belinda Shu Ee; Teo, Serena Lay-Ming; Sivananthan, Gayathiri; Baeg, Gyeong Hun; Ok, Yong Sik; Wang, Chi-Hwa
- Issue Date
- 5-9월-2018
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Sewage sludge ash; Leaching; Land reclamation; Biotoxicity assessment; Waste management
- Citation
- JOURNAL OF HAZARDOUS MATERIALS, v.357, pp.63 - 72
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF HAZARDOUS MATERIALS
- Volume
- 357
- Start Page
- 63
- End Page
- 72
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/73136
- DOI
- 10.1016/j.jhazmat.2018.05.047
- ISSN
- 0304-3894
- Abstract
- The study evaluated the potential of utilising sewage sludge incineration ash as a land reclamation material. Toxicity assessment of the leachate of the ash was carried out for both terrestrial and marine organisms. Both the fruit fly Drosophila melanogaster and barnacle Amphibalanus arnphitrite showed that both bottom and fly ash leached at liquid-to-solid (L/S) ratio 5 did not substantially affect viabilities. The leachate carried out at L'S 10 was compared to the European Waste Acceptance Criteria and the sewage sludge ashes could be classified as non-hazardous waste. The geotechnical properties of the sewage sludge ash were studied and compared to sand, a conventional land reclamation material, for further evaluation of its potential as a land reclamation material. It was found from direct shear test that both bottom and fly ashes displayed similar and comparable shear strength to that of typical compacted sandy soil based on the range of internal friction angle obtained. However, the consolidation profile of bottom ash was significantly different from sand, while that of fly ash was more similar to sand. Our study showed that the sewage sludge ash has the potential to be used as a land reclamation material.
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Collections - College of Life Sciences and Biotechnology > Division of Environmental Science and Ecological Engineering > 1. Journal Articles
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