A Novel Biosorbent, Water-Hyacinth, Uptaking Methylene Blue from Aqueous Solution: Kinetics and Equilibrium Studies

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td align="left"><svg height="15.4" id="M167" style="vertical-align:-3.21404pt" version="1.1" viewbox="0 0 20.1625 15.4" width="20.1625" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg> value</td><td align="center">Type of kinetic curve</td><td align="center">Approaching equilibrium level</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td align="left"><span style="width: 47.75px;"><svg height="15.4" id="M168" style="vertical-align:-3.21404pt" version="1.1" viewbox="0 0 47.75 15.4" width="47.75" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg></span></td><td align="center">Linear</td><td align="center">Not approaching equilibrium</td></tr><tr><td align="left"><span style="width: 87.362503px;"><svg height="15.4" id="M169" style="vertical-align:-3.21404pt" version="1.1" viewbox="0 0 87.362503 15.4" width="87.362503" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg></span></td><td align="center">Slightly curved</td><td align="center">Approaching equilibrium</td></tr><tr><td align="left"><span style="width: 107.5625px;"><svg height="15.4" id="M170" style="vertical-align:-3.21404pt" version="1.1" viewbox="0 0 107.5625 15.4" width="107.5625" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg></span></td><td align="center">Largely curved</td><td align="center">Well approaching equilibrium</td></tr><tr><td align="left"><span style="width: 67.9375px;"><svg height="15.4" id="M171" style="vertical-align:-3.21404pt" version="1.1" viewbox="0 0 67.9375 15.4" width="67.9375" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg></span></td><td align="center">Pseudorectangular</td><td align="center">Drastically approaching equilibrium</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Adsorption kinetic behavior in the PSO model and equilibrium approaching factor (<svg height="15.4" id="M166" style="vertical-align:-3.21404pt" version="1.1" viewbox="0 0 20.1625 15.4" width="20.1625" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg>).

International Journal of Chemical Engineering

tab3

Table 3

Table 3: A Novel Biosorbent, Water-Hyacinth, Uptaking Methylene Blue from Aqueous Solution: Kinetics and Equilibrium Studies 