The effects of bone char (BC) application on the bioavailability of Pb in a polluted soil from Hu... more The effects of bone char (BC) application on the bioavailability of Pb in a polluted soil from Hunan Province, China were examined. The Pb-contaminated soil was treated with two types of bone char, one from the UK and the other from China. The bioavailability of Pb was determined in terms of the uptake by Chinese cabbage (Brassica chinensis L.), sequential extraction and X-ray diffraction analysis. The results indicate that the Pb concentrations in both shoots and roots decreased with increasing quantities of added bone char, and the application of BC from the UK at the rate of 1.6% (w:w) had the largest effect. Lead Pb concentrations in the shoots and roots decreased by 56.0% and 75.9%, respectively, whereas the application of BC from Zhejiang Province, China at the rate of 1.6% (w:w) reduced Pb concentrations in the shoots and roots to 2.04 mgkg(-1) and 8.42 mgkg(-1), respectively, only 45.8% and 30.2% compared to the control treatment. Sequential extraction results indicate that the addition of bone char, as a metal-immobilizing agent, substantially transforms soil Pb from non-residual fractions to the residual fraction. The transformation was further confirmed using X-ray diffraction studies.
... 28,1767-1778 (1983) 0 1983 John Wiley & Sons, Inc. CCC 0021-8995/83/051767-12... more ... 28,1767-1778 (1983) 0 1983 John Wiley & Sons, Inc. CCC 0021-8995/83/051767-12$02.20 Page 2. 1768 McKAY, BLAIR, AND GARDNER ... 9.0 4.48 3.37 - - a AB 25 = Telon Blue (Acid Blue 25); AB 158 = Neolan Blue 2G (Acid Blue 158); MY 5 = Erio-Agitation (rprn) ...
... play a vital role in the green production of high value fine chemicals and pharmaceuticals.... more ... play a vital role in the green production of high value fine chemicals and pharmaceuticals. ... It also emphasizes the importance of the adsorption and diffusion processes in the ... of the washing solution allows the total regeneration of the modified mesoporous silica adsorbent and ...
... AQUEOUS SOLUTIONS ON TO ACTIVATED CARBON G. MCKAV*, MJ BINO: and AR ALTAMEMI" *D... more ... AQUEOUS SOLUTIONS ON TO ACTIVATED CARBON G. MCKAV*, MJ BINO: and AR ALTAMEMI" *Department of Chemical Engineering, Queen's University, Belfast, Northern Ireland and -'Royal Scientific Society, Amman, Jordan (Received July ... Dodecylhy-492 G. McKAY et al ...
Environmental Pollution 56 (1989) 39-50 lntraparticle Diffusion of a Basic Dye During Adsorption ... more Environmental Pollution 56 (1989) 39-50 lntraparticle Diffusion of a Basic Dye During Adsorption onto Sphagnum Peat SJ Allen,* G. McKay & KYH Khader Department of Chemical Engineering, David Keir Building, The Queen's University of Belfast, Belfast BT9 5AH, UK ( ...
An indigenously prepared, steam activated and chemically modified carbon from husk and pods of Mo... more An indigenously prepared, steam activated and chemically modified carbon from husk and pods of Moringa oleifera (M. oleifera), an agricultural waste, was comparatively examined as an adsorbent for the removal of lead from aqueous solutions. Studies were conducted as a function of ...
The adsorption of basic dyes onto peat from single component and multi-component solution is repo... more The adsorption of basic dyes onto peat from single component and multi-component solution is reported. The adsorption is presented in the form of the equilibrium isotherms. The Freundlich, Langmuir and Redlich-Peterson isotherm equations are fitted to the results and the isotherm constants obtained.
The effects of bone char (BC) application on the bioavailability of Pb in a polluted soil from Hu... more The effects of bone char (BC) application on the bioavailability of Pb in a polluted soil from Hunan Province, China were examined. The Pb-contaminated soil was treated with two types of bone char, one from the UK and the other from China. The bioavailability of Pb was determined in terms of the uptake by Chinese cabbage (Brassica chinensis L.), sequential extraction and X-ray diffraction analysis. The results indicate that the Pb concentrations in both shoots and roots decreased with increasing quantities of added bone char, and the application of BC from the UK at the rate of 1.6% (w:w) had the largest effect. Lead Pb concentrations in the shoots and roots decreased by 56.0% and 75.9%, respectively, whereas the application of BC from Zhejiang Province, China at the rate of 1.6% (w:w) reduced Pb concentrations in the shoots and roots to 2.04 mgkg(-1) and 8.42 mgkg(-1), respectively, only 45.8% and 30.2% compared to the control treatment. Sequential extraction results indicate that the addition of bone char, as a metal-immobilizing agent, substantially transforms soil Pb from non-residual fractions to the residual fraction. The transformation was further confirmed using X-ray diffraction studies.
... 28,1767-1778 (1983) 0 1983 John Wiley & Sons, Inc. CCC 0021-8995/83/051767-12... more ... 28,1767-1778 (1983) 0 1983 John Wiley & Sons, Inc. CCC 0021-8995/83/051767-12$02.20 Page 2. 1768 McKAY, BLAIR, AND GARDNER ... 9.0 4.48 3.37 - - a AB 25 = Telon Blue (Acid Blue 25); AB 158 = Neolan Blue 2G (Acid Blue 158); MY 5 = Erio-Agitation (rprn) ...
... play a vital role in the green production of high value fine chemicals and pharmaceuticals.... more ... play a vital role in the green production of high value fine chemicals and pharmaceuticals. ... It also emphasizes the importance of the adsorption and diffusion processes in the ... of the washing solution allows the total regeneration of the modified mesoporous silica adsorbent and ...
... AQUEOUS SOLUTIONS ON TO ACTIVATED CARBON G. MCKAV*, MJ BINO: and AR ALTAMEMI" *D... more ... AQUEOUS SOLUTIONS ON TO ACTIVATED CARBON G. MCKAV*, MJ BINO: and AR ALTAMEMI" *Department of Chemical Engineering, Queen's University, Belfast, Northern Ireland and -'Royal Scientific Society, Amman, Jordan (Received July ... Dodecylhy-492 G. McKAY et al ...
Environmental Pollution 56 (1989) 39-50 lntraparticle Diffusion of a Basic Dye During Adsorption ... more Environmental Pollution 56 (1989) 39-50 lntraparticle Diffusion of a Basic Dye During Adsorption onto Sphagnum Peat SJ Allen,* G. McKay & KYH Khader Department of Chemical Engineering, David Keir Building, The Queen's University of Belfast, Belfast BT9 5AH, UK ( ...
An indigenously prepared, steam activated and chemically modified carbon from husk and pods of Mo... more An indigenously prepared, steam activated and chemically modified carbon from husk and pods of Moringa oleifera (M. oleifera), an agricultural waste, was comparatively examined as an adsorbent for the removal of lead from aqueous solutions. Studies were conducted as a function of ...
The adsorption of basic dyes onto peat from single component and multi-component solution is repo... more The adsorption of basic dyes onto peat from single component and multi-component solution is reported. The adsorption is presented in the form of the equilibrium isotherms. The Freundlich, Langmuir and Redlich-Peterson isotherm equations are fitted to the results and the isotherm constants obtained.
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