Evaluation of the capacity of hydroxyapaptite prepared from concrete sludge to remove lead from water

Takeshi Sasaki, Yuka Sakai, Atsushi Iizuka, Takashi Nakae, Shigeru Kato, Tomonori Kojima, Akihiro Yamasaki

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    23 Citations (Scopus)

    Abstract

    Low-crystallinity hydroxyapatite (HAP) was prepared from concrete sludge as a recycling method for concrete waste. The HAP was prepared from model samples of concrete sludge and phosphorus wastewater, and its capacity to remove lead from water was investigated. Lead ions were quickly removed by the HAP particles. Some of the prepared HAP samples reduced the lead concentration of the water to within the Japanese standard for industrial effluent (0.1 ppm). The lead removal capacity of the concrete sludge-derived HAP (506 mg/g) was comparable to that of reagent grade HAP. Lead in water was removed in the form of Pb3(CO3)2(OH)2. These results indicate that HAP prepared from concrete sludge can be applied to removal of lead ions from water.

    Original languageEnglish
    Pages (from-to)9564-9568
    Number of pages5
    JournalIndustrial and Engineering Chemistry Research
    Volume50
    Issue number16
    DOIs
    Publication statusPublished - 2011 Aug 17

    ASJC Scopus subject areas

    • Chemistry(all)
    • Chemical Engineering(all)
    • Industrial and Manufacturing Engineering

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