Effect of Alkali Treatment of Wheat Straw on Adsorption of Cu(II) under Acidic Condition

Figure 1

Effect of NaOH concentration (conditions: adsorbent dose = 5 g/L, adsorbate conc. = 20 mg/L, pH = 5, contact time = 6 h, temp. = °C, and stirring rate = 150 rpm).