<![CDATA[Activated carbon can be from various organic and inorganic raw materials. One organic material that has potential as a raw material is salak skin. Salak skin is modified in manufactured of activated carbon by treatment in the sun, in the roast, and the oven. Activated carbon was then activ with a ZnCl2 activator, and the adsorbing power of this salak skin-activated carbon was against phenol reduction. The most adsorbent material that reduces the concentration of phenol is the roasted adsorbent material with a final phenol concentration of 2.15 mg/L with an absorbed phenol concentration of 297.85 mg/L at a mass of 1.5g. Based on the analysis results, it can seen that each variation of the type of activated carbon material will experience a decrease in concentration along with an increase in adsorbent mass. The greater the mass of the adsorbent, the adsorption ability will increase. Each type of activated carbon material also experienced an increase in percent removal along with increasing adsorbent mass. The results of research on the effect of activ carbon mass also show that the value of adsorption capacity decreases with increasing adsorbent mass.]]>
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