Preparation of Tetra Pak-Based Hydrochars for Cleaning Water Polluted by Heavy Metal Ions: Physicochemical Properties and Removal Mechanism

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left" rowspan="2">Hydrochar</td><td class="align_center" colspan="3">Element (wt%)</td><td class="align_center" rowspan="2">O/C</td><td class="align_center" rowspan="2">S<sub>BET</sub> (m<sup>2</sup>/g)</td></tr><tr class="thead"><td class="align_center">C</td><td class="align_center">O</td><td class="align_center">Si</td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">TP1</td><td class="align_center">53</td><td class="align_center">46</td><td class="align_center">—</td><td class="align_center">0.87</td><td class="align_center">&lt;1</td></tr><tr><td class="align_left">TP5</td><td class="align_center">75</td><td class="align_center">24</td><td class="align_center">0.40</td><td class="align_center">0.32</td><td class="align_center">4</td></tr><tr><td class="align_left">TP8</td><td class="align_center">79</td><td class="align_center">21</td><td class="align_center">0.10</td><td class="align_center">0.26</td><td class="align_center">13</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Surface area and elemental composition of Tetra Pak-based hydrochars.</div>

International Journal of Chemical Engineering

tab2

Table 2

Table 2: Preparation of Tetra Pak-Based Hydrochars for Cleaning Water Polluted by Heavy Metal Ions: Physicochemical Properties and Removal Mechanism 