Vegetable Tannins as Chrome-Free Leather Tanning

<table class="table-group" id="tab6"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left" rowspan="2">Parameters</td><td class="align_center" colspan="2">Sample type</td></tr><tr class="thead"><td class="align_center"><i>Cassia singueana</i> bark extract</td><td class="align_center">Mimosa extract (standard)</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">BOD</td><td class="align_center">11760 ± 800</td><td class="align_center">12420 ± 705</td></tr><tr><td class="align_left">COD</td><td class="align_center">33487.8 ± 325</td><td class="align_center">346700.4 ± 460</td></tr><tr><td class="align_left">TDS</td><td class="align_center">18208.7 ± 700</td><td class="align_center">22627.2 ± 800</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Pollution load generated from the liquor after leather tanning.</div>

Advances in Materials Science and Engineering

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Table 6

Table 6: Vegetable Tannins as Chrome-Free Leather Tanning 