Aluminum drinking water treatment residuals (Al-WTRs) as sorbent for mercury : Implications for soil remediation
In: Journal of hazardous materials (Print), Jg. 164 (2009), Heft 1, S. 73-80
academicJournal
- print, 57 ref
Zugriff:
The potential of readily available and non-hazardous waste material, aluminum drinking water treatment residuals (Al-WTRs), to efficiently sorb and immobilize mercury (Hg) from aqueous solutions was evaluated. Al-WTR samples with average specific surface area of 48 m2/g and internal micropore surface area of 120 m2/g were used in a series of batch sorption experiments. Obtained sorption isotherms indicated a strong affinity of Hg for Al-WTRs. Using the Langmuir adsorption model, a relatively high maximum sorption capacity of 79 mg Hg/g Al-WTRs was determined. Sorption kinetic data was best fit to a pseudo-first-order model, while the use of the Weber-Morris and Bangham models suggested that the intraparticle diffusion could be the rate-limiting step. Also, Al-WTRs effectively immoblized Hg in the pH range of 3-8. The results from these short-term experiments demonstrate that Al-WTRs can be effectively used to remove Hg from aqueous solutions. This ability points to the potential of Al-WTRs as a sorbent in soil remediation techniques based on Hg-immobilization.
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Aluminum drinking water treatment residuals (Al-WTRs) as sorbent for mercury : Implications for soil remediation
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Autor/in / Beteiligte Person: | HOVSEPYAN, Anna ; BONZONGO, Jean-Claude J |
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Zeitschrift: | Journal of hazardous materials (Print), Jg. 164 (2009), Heft 1, S. 73-80 |
Veröffentlichung: | Kidlington: Elsevier, 2009 |
Medientyp: | academicJournal |
Umfang: | print, 57 ref |
ISSN: | 0304-3894 (print) |
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