Fig. 5From: Alpha-glucan: a novel bacterial polysaccharide and its application as a biosorbent for heavy metalsEffect of waste solution pH on the percentage removal using glucan 40B for the two metal ions: A lead and B chromium (volume of waste solution = 100 ml, agitation speed = 250 rpm, contact time = 4 h, dosage of glucan beads = 0.5 g, initial metal ion concentration = 10 ppm and temperature = 25 °C)Back to article page