Copper stabilization in beneficial use of waterworks sludge and copper-laden electroplating sludge for ceramic materials
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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 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 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 کاملIn situ speciation studies of copper in the electroplating sludge under an electric field.
Speciation of copper in the electrokinetic treatments of an industrial sludge was studied by in situ extended X-ray absorption fine structural (EXAFS) and X-ray absorption near-edge structural (XANES) spectroscopies in the present work. The least-square fits (LSF) of the XANES spectra indicated that the main copper species in the sludge were Cu(NO)(3) (82%) and adsorbed copper (Cu/SiO(2)) (17%)...
متن کاملcopper and nickel recovery from electroplating sludge by the process of acid-leaching and electro-depositing
in this work, we developed a method which combined the processes of acid-leaching, ammonium jarosite precipitating and electro-depositing to recover copper and nickel from electroplating sludge. residual sludge from an electroplating plant located in qingdao was used for acid-leaching, and more than 95% of copper, nickel, zinc, chromium and iron were extracted from the sludge. after acid-leachi...
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ژورنال
عنوان ژورنال: Waste Management
سال: 2014
ISSN: 0956-053X
DOI: 10.1016/j.wasman.2013.07.001