Evaluation of Adsorbent Capacity of Pseudofruit of Japanese Grape in Different Concentrations of Methylene Blue

The removal of color by adsorption is a new technology and it has demonstrated a lot of efficiency. Alternative materials that combine a good adsorption capacity with a low cost are being studied. The pseudofruit of Japanese grape is an attractive material as adsorbent due to its high content of carbon. In 250 mL erlenmeyers, 0.6 g of Japan grape biomass and 100 mL of methylene blue solution were added at concentrations of 100, 200, 300 and 400 mg/L and these were kept in Shaker with a controlled temperature at 25 °C and rotation of 100 rpm. It was observed that the pseudofruit was efficient in view of the removal of up to 92% of the dye in solution. Japanese grape biomass presents desirable characteristics as a bioadsorbent because it is efficient, quite abundant and presents a cost below the commercial activated charcoal.