Copper aluminate spinel in the stabilization and detoxification of simulated copper-laden sludge
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چکیده
منابع مشابه
Copper aluminate spinel in the stabilization and detoxification of simulated copper-laden sludge.
This study aims to evaluate the feasibility of stabilizing copper-laden sludge by the application of alumina-based ceramic products. The processing temperature, material leaching behaviour, and the effect of detoxification were investigated in detail. CuO was used to simulate the copper-laden sludge and X-ray Diffraction was performed to monitor the incorporation of copper into the copper alumi...
متن کاملFormation of copper aluminate spinel and cuprous aluminate delafossite to thermally stabilize simulated copper-laden sludge.
The study reported herein indicated the stabilization mechanisms at work when copper-laden sludge is thermally treated with gamma-alumina and kaolinite precursors, and evaluated the prolonged leachability of their product phases. Four copper-containing phases - copper oxide (CuO), cuprous oxide (Cu(2)O), copper aluminate spinel (CuAl(2)O(4)), and cuprous aluminate delafossite (CuAlO(2)) - were ...
متن کاملCopper stabilization via spinel formation during the sintering of simulated copper-laden sludge with aluminum-rich ceramic precursors.
The feasibility of incorporating copper-laden sludge into low-cost ceramic products, such as construction ceramics, was investigated by sintering simulated copper-laden sludge with four aluminum-rich ceramic precursors. The results indicated that all of these precursors (γ-Al(2)O(3), corundum, kaolinite, mullite) could crystallochemically stabilize the hazardous copper in the more durable coppe...
متن کاملNickel aluminate spinel formation during sintering of simulated Ni-laden sludge and kaolinite
ncorporating Ni-laden waste sludge into kaolinite-based construction ceramic materials appears promising based on the identified nickel bearing hases, evaluated incorporation efficiency and nickel leachability of the products. Nickel aluminate spinel (NiAl2O4) results from sintering kaolinite nd nickel oxide between 990 and 1480 ◦C, with more than 90% incorporation efficiency achieved at 1250 ◦...
متن کاملSpinel formation for stabilizing simulated nickel-laden sludge with aluminum-rich ceramic precursors.
The feasibility of stabilizing nickel-laden sludge from commonly available Al-rich ceramic precursors was investigated and accomplished with high nickel incorporation efficiency. To simulate the process, nickel oxide was mixed alternatively with gamma-alumina, corundum, kaolinite, and mullite and was sintered from 800 to 1480 degrees C. The nickel aluminate spinel (NiAl2O4) was confirmed as the...
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ژورنال
عنوان ژورنال: Chemosphere
سال: 2010
ISSN: 0045-6535
DOI: 10.1016/j.chemosphere.2010.04.048