The document describes a study investigating the use of kapok fibre to remove lead ions from water. Kapok fibre was treated with sodium pyrosulfite to improve its affinity for lead ions. Experiments examined the effect of pH, adsorbent dosage, and concentration on lead ion uptake. Testing showed that kapok fibre effectively removed lead from water and could help prevent the toxic effects of lead in drinking water. The aim was to develop an inexpensive filter using kapok fibre to purify water by absorbing bacteria and eliminating harmful lead ions.