Before the tests, the bananas were washed more than five times to get rid of any dirt and moisture which will affect the outcome. They certainly were then dried set for 48 hours in an oven of 50°C. The data from these tests showed that the extraction efficiency of the minced banana peel material at an anion concentration of 10 mg L-1 is about 97-98%. It was also observed that with a concentration of anions above 10 mg L-1, the efficiency of extraction does not decrease significantly. The scientists conducting these experiments concluded that banana peel can be employed to extract copper and lead heavy metal ions from raw river water. Table 1 compares the absorption rates of Cu and Pb by other materials, obtained from other studies to the absorption rates of the minced banana peel. Comparing the proposed materials, minced banana peel is apparently probably the most appealing option, not only because of its high extraction rates, but because of its inexpensive and accessibility. Unlike other materials studied and employed, the minced banana peel requires no modification. With a high stability, the banana peel can be used for at the very least 11 cycles before becoming less efficient (Castro et al., 2011). Dining table 1 . Copper and lead extraction capacity of numerous materials (based on Castro et al., 2011)

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