hi am M Sajawal i would like to get details on water melon seeds as acost effective water purifier .. mu friend awais said water melon seeds as a cost effective waer purifier will be available here and now i am living at pakistan and i last studied in university nfc iet multan and am doing that.i need help,plz give me data about this

Abstract- This paper reports the potential of watermelon seed as a natural coagulant for water
treatment. It was aimed at identifying watermelon seed as a possible replacement for alum and
other synthetic polyelectrolytes in treating water. Laboratory scale studies using jar test
experiments were performed on medium turbid water to determine the effect of dosage, pH
stirring time and speed on coagulation. Results obtained showed that at dosage of 0.1g/L, pH of
7.0, stirring time of 8 minutes and mixing speed of 100rpm, optimal removal of turbidity was
obtained. The reduction in turbidity was below the world health organizations (WHO)
recommended value of 5NTU, however the best colour removal was not up to the WHO
recommended value of 40TCU. When used in combination with alum, it caused unfavourable
changes in the pH of the treated water howeverwith 20% alum as coagulant aid, the best colour
and turbidity removal at acceptable pH was obtained, with residual turbidity of 0.89 NTU and
residual colour of 15TCU at a pH of 6.50. The results showed that watermelon seed can be used
as a natural coagulant for water treatment