Journal ArticleDOI
Leaching behavior of heavy metals from sewage sludge solidified by cement-based binders
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TLDR
Acid-assisted S/S product showed lower De values and leaching tendency from TCLP test results for all the selected heavy metals (Ni, Cu, Zn and Pb) compared to traditional S/s product using the same binders.About:
This article is published in Chemosphere.The article was published on 2013-07-01. It has received 88 citations till now. The article focuses on the topics: Toxicity characteristic leaching procedure & Leaching (metallurgy).read more
Citations
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Risk analysis of pyrolyzed biochar made from paper mill effluent treatment plant sludge for bioavailability and eco-toxicity of heavy metals
Parmila Devi,Anil K. Saroha +1 more
TL;DR: The risk analysis was performed to study the bioavailability and eco-toxicity of heavy metals in biochar obtained from pyrolysis of sludge of pulp and paper mill effluent treatment plant and it was observed that the leaching potential ofheavy metals decreased after pyroglysis and the best results were obtained for biochar pyroallyzed at 700°C.
Journal ArticleDOI
Effect of acid rain pH on leaching behavior of cement stabilized lead-contaminated soil.
TL;DR: It is observed that the lead contamination and cement content levels can have a considerable impact on the leaching behavior of the soils and the leachability of lead and calcium is attributed to the stability of the hydration products and their consequent influence on the soil buffering capacity and structure.
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Arsenic-containing soil from geogenic source in Hong Kong: Leaching characteristics and stabilization/solidification
Jiang-Shan Li,Jingzi Beiyuan,Daniel C.W. Tsang,Lei Wang,Chi Sun Poon,Xiangdong Li,Scott Fendorf +6 more
TL;DR: The results illustrate the importance of holistic assessment and treatment/management of As-containing soils for enabling flexible future land use and suggest that As immobilization in the S/S treated soils was predominantly dependent on physical encapsulation by interlocking framework of hydration products.
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Bibliographic and visualized analysis of geopolymer research and its application in heavy metal immobilization: A review
Zehua Ji,Yuansheng Pei +1 more
TL;DR: The analysis results demonstrate that the research on GP develops rapidly in the last years, and the GP have already possessed a degree of application value in several engineering fields, and this research shows a multidisciplinary amalgamation tendency in contents and methods.
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Extraction and precipitation of phosphorus from sewage sludge
TL;DR: Raw sewage sludge from East Rand Water Care Association (ERWAT) had high phosphorus (P) content, approximately 15.2% (w/w) P2O5, which indicates a potential resource for the limiting nutrient, so a further purification step using ion exchange to remove iron was required to increase the degree of P release.
References
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Journal ArticleDOI
Sequential extraction procedure for the speciation of particulate trace metals
TL;DR: In this paper, an analytical procedure involving sequential chemicai extractions was developed for the partitioning of particulate trace metals (Cd, Co, Cu, Ni, Pb, Zn, Fe, and Mn) into five fractions: exchangeable, bound to carbonates, binding to Fe-Mn oxides and bound to organic matter.
Journal ArticleDOI
Utilization of sewage sludge in EU application of old and new methods—A review
D. Fytili,Anastasia Zabaniotou +1 more
TL;DR: In this article, the authors review past and future trends in sludge handling, focusing mainly at thermal processes (e.g. pyrolysis, wet oxidation, gasification) and the utilization of sewage sludge in cement manufacture as a co-fuel.
Journal ArticleDOI
Heavy metal speciation and leaching behaviors in cement based solidified/stabilized waste materials.
TL;DR: The leaching of heavy metals in the S/S materials can be considered as a pH dependent and corresponding metal hydroxide solubility controlled process.
Journal ArticleDOI
Chemical forms of Pb, Zn and Cu in the sediment profiles of the Pearl River Estuary.
TL;DR: The chemical forms of heavy metals in sediment cores of the Pearl River Estuary were studied using a sequential chemical extraction method and the 206Pb/207Pb ratios in the exchangeable fraction were the lowest among the five fractions, particularly in top sediments, showing the anthropogenic inputs ofheavy metals from recent rapid industrial development in the surrounding region.
Journal ArticleDOI
Solidification/stabilization of arsenic containing solid wastes using portland cement, fly ash and polymeric materials.
TL;DR: Formations of calcite along with precipitate formation of calcium arsenite were found to be responsible for low leaching of arsenic from the stabilized/solidified samples.
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