Comparative study on the removal of copper (II) and nickel (II) from aqueous soluion using cellulose extracted from sisal fiber and cellulose grafted acrylonitrile copolymer

Abstract

<span style="font-size:11.0pt;mso-bidi-font-size: 10.0pt;font-family:" times="" new="" roman","serif";mso-fareast-font-family:gulliverrm;="" mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="" lang="EN-US">Batch adsorption studies have been carried out to<span style="font-size:11.0pt;mso-bidi-font-size:10.0pt;font-family:" times="" new="" roman","serif";="" mso-fareast-font-family:"times="" roman";mso-ansi-language:en-us;mso-fareast-language:="" en-us;mso-bidi-language:ar-sa"="" lang="EN-US"> <span style="font-size:11.0pt; mso-bidi-font-size:10.0pt;font-family:" times="" new="" roman","serif";mso-fareast-font-family:="" gulliverrm;mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:="" ar-sa"="" lang="EN-US">remove <span style="font-size:11.0pt;mso-bidi-font-size: 10.0pt;font-family:" times="" new="" roman","serif";mso-fareast-font-family:"times="" roman";="" mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="" lang="EN-US">Cu (II) and Ni (II) ion from aqueous solution using cellulose extracted from sisal fiber and cellulose-g-acrylonitrile copolymer by steam explosion method.<span style="mso-bidi-font-style:italic"> The effect of <i style="mso-bidi-font-style: normal">p</i><span style="mso-bidi-font-style:italic">H, contact time and amount of adsorbent dose have also been investigated for both cellulose extracted from sisal fiber and cellulose-g-acrylonitrile copolymer<span style="mso-bidi-font-style:italic"> . From the observed results, it is evident that the adsorption of metal ions increases with the increase in contact time and adsorbent dosage. The optimum <i>p</i>H is found to be 5.0 for the removal of copper (II) and nickel (II) for both the extracted cellulose and cellulose-g-acrylonitrile copolymer.<span style="mso-bidi-font-style:italic"> The adsorption kinetics of cellulose and cellulose-g-acrylonitrile is found to follow pseudo-second-order kinetic model. The experimental data are fitted to Langmuir adsorption isotherms for both cellulose extracted from sisal fiber and cellulose-g-acrylonitrile copolymer.<span style="mso-bidi-font-style: italic"> From the results it is concluded that the cellulose graft acrylonitrile copolymer is found to be efficient adsorbent for the removal of heavy metals from aqeous solutions.</span></span></span></span></span></span></span></span></span>