A bench study on lead removal from battery manufacturing wastewater by carbonate precipitation
| Autor: | G. Macchi, D. Marani, Michele Pagano, G. Bagnuolo |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Battery (electricity)
Supersaturation Environmental Engineering Chemistry Precipitation (chemistry) Ecological Modeling Mineralogy Sedimentation Pollution law.invention Filter (aquarium) chemistry.chemical_compound Wastewater law Carbonate Waste Management and Disposal Filtration Water Science and Technology Civil and Structural Engineering Nuclear chemistry |
| Zdroj: | Water Research. 30:3032-3036 |
| ISSN: | 0043-1354 |
| DOI: | 10.1016/s0043-1354(96)00089-9 |
| Popis: | A residual soluble Pb ≤ 0.2 mg/l has been measured after hydrocerussite precipitation in the range of pH 9–10 and filtration with 0.45 μm filter, at a total carbonate concentration (CT) of about 1.5 × 10−4 M. Filterability and sedimentation were optimized by minimizing the “relative supersaturation” coefficient during precipitation. Pb abatement was implemented in the pH range 9–9.5, following a preliminary precipitation step consisting of a slow, gradual change of pH from 6.8 to 7.8 with 0.1 M NaOH solution. The crystals formed may settle within 24 h, allowing Pb to be recovered as Pb3(CO3)2(OH)2. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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