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- W2002433605 abstract "Effects of Ni(II) concentration, agitation time, temperature and pH on adsorption of Ni(II) on Fe(III)/Cr(III) hydroxide, a waste by-product from fertilizer industry, have been investigated. The percent adsorption increased from 55 to 69% with increase in temperature from 20 to 40°C and from 32 to 77% with increase in pH from 3.7 to 7.5 and from 38 to 79% with decrease in Ni(II) concentration from 100 to 25 mg/L. The equilibrium data fit well with the Langmuir isotherm and the adsorption capacity was found to be 21.0 mg/g at 30°C. Thermodynamic parameters such as free energy change (ΔG°), enthalpy change (ΔH°) and entropy change (ΔS°) were evaluated. The adsorption rate constant was higher at lower concentration of Ni(II) and at higher temperature. Desorption studies show that 70% of Ni(II) can be desorbed from the adsorbent at pH 4.0. The adsorbent was tested using nickel plating industry wastewater and the maximum percent removal was 97." @default.
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- W2002433605 date "1994-01-01" @default.
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- W2002433605 title "Recycling of ‘waste’ FE(III)/CR(III) hydroxide for the removal of nickel from wastewater: Adsorption and equilibrium studies" @default.
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- W2002433605 doi "https://doi.org/10.1016/0956-053x(94)90058-2" @default.
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