Solidification/stabilization of lead with the aid of bagasse as an additive to Portland cement

Citation
Ma. Janusa et al., Solidification/stabilization of lead with the aid of bagasse as an additive to Portland cement, MICROCHEM J, 65(3), 2000, pp. 255-259
Citations number
14
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
MICROCHEMICAL JOURNAL
ISSN journal
0026265X → ACNP
Volume
65
Issue
3
Year of publication
2000
Pages
255 - 259
Database
ISI
SICI code
0026-265X(200010)65:3<255:SOLWTA>2.0.ZU;2-S
Abstract
Solidification/stabilization (S/S) of hazardous waste is a widely used tech nology; therefore, it is crucial to evaluate its effectiveness and make att empts to improve the technique, A better matrix for S/S of hazardous waste was designed that is effective and economically feasible. This was accompli shed by adding bagasse (byproduct of milling or diffusing sugar cane) to th e waste/cement matrix. Lead nitrate was used as the model heavy metal waste with a 10 or 15% lead by weight to cement loading. Samples were cured for 7, 14, and 28 days at 24 degreesC. Samples containing bagasse typically res ulted in TCLP (modified) extract lead concentrations of approximately 0.5 m g/l of lead for all samples, while samples containing no bagasse had lead e xtract concentrations of approximately 5 mg/l for 10% samples and 45 mg/l f or 15%. Results indicate that using bagasse as an additive to cement effect ively improved the S/S of lead. (C) 2000 Elsevier Science B.V. All rights r eserved.