Pearson’s linear correlation coefficients between biochar characteristics and the <i>q</i><sub>e</sub> values obtained at different initial tetracycline concentration(<i>C</i><sub>0</sub>) at 25°C (n = 9).

<p>Pearson’s linear correlation coefficients between biochar characteristics and the <i>q</i><sub>e</sub> values obtained at different initial tetracycline concentration(<i>C</i><sub>0</sub>) at 25°C (n = 9).</p>