The Sorption of Ni(II) by Grape Shell Ash from Aqueous Solution: Kinetic and Thermodynamic Studies

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</svg> (K)</td><td align="center">ln <svg height="16.3125" id="M111" style="vertical-align:-3.13504pt" version="1.1" viewbox="0 0 18.85 16.3125" width="18.85" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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<g transform="matrix(.012,-0,0,-.012,8.612,16.25)"><path d="M780 372q0 -191 -178 -297q-128 -75 -335 -75h-250l7 27q61 7 77 22t28 76l77 398q11 62 0 76.5t-77 22.5l6 28h292q164 0 258.5 -67.5t94.5 -210.5zM678 375q0 119 -73 180.5t-201 61.5q-62 0 -82 -13q-17 -7 -25 -53l-80 -427q-8 -47 -4 -62t26 -20q24 -6 80 -6
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</svg></td><td align="center">Δ<i>G</i> (kJmol<sup>−1</sup>)</td><td align="center">Δ<i>H</i> (kJmol<sup>−1</sup>)</td><td align="center">Δ<i>S</i> (kJmol<sup>−1</sup>K<sup>−1</sup>)</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td align="left">298</td><td align="center">3.4339</td><td align="center"><span style="width: 54.775002px;"><svg height="11.125" id="M112" style="vertical-align:-0.17555pt" version="1.1" viewbox="0 0 54.775002 11.125" width="54.775002" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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t96 -62.5q53 0 78 45.5t25 105.5q0 68 -35 116t-99 48z" id="x36"></path></g>
</svg></span></td></tr><tr><td align="left">308</td><td align="center">3.1357</td><td align="center"><span style="width: 54.775002px;"><svg height="11.275" id="M115" style="vertical-align:-0.27588pt" version="1.1" viewbox="0 0 54.775002 11.275" width="54.775002" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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q53 0 90 28q4 31 4 66q0 51 -9.5 95.5t-39 80.5t-75.5 36z" id="x39"></path></g><g transform="matrix(.017,-0,0,-.017,46.554,10.962)"><path d="M137 343l67 33q37 17 63 17q79 0 129.5 -53t50.5 -131q0 -92 -58 -156.5t-147 -64.5t-147 68t-58 182q0 63 17 119t43 95.5t61.5 72t69 52t67.5 31.5q62 22 128 33l6 -32q-56 -11 -108 -35q-149 -71 -184 -231zM227 337q-47 0 -95 -27q-6 -23 -6 -70q0 -93 36 -155.5
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</svg></span></td></tr><tr><td align="left">318</td><td align="center">3.0123</td><td align="center"><span style="width: 54.775002px;"><svg height="11.275" id="M116" style="vertical-align:-0.27588pt" version="1.1" viewbox="0 0 54.775002 11.275" width="54.775002" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg></span></td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Thermodynamic parameters for adsorption of Ni(II) onto GSA.

Indian Journal of Materials Science

tab6

Table 6

Table 6: The Sorption of Ni(II) by Grape Shell Ash from Aqueous Solution: Kinetic and Thermodynamic Studies 