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Removal of Zinc Ions from Synthetic Waste Water using Tea Waste as an Adsorbent

Hanit Kumar Thapak


Tea production in India is 1125,000 T per year, which is 34.2% of total world production. After processing, tea factory waste is about 247,600 T. Adsorption studies have been carried out for investigating the suitability of tea factory waste as a low-cost adsorbent for the removal of zinc. The factor effecting tea waste adsorbent like pH, adsorbent dose and contact time were studied using tea factory waste. The study shows the Indian tea factory waste acts as a good adsorbent for the removal of zinc ions from synthetic waste water. The tea factory waste show very good adsorption for removal zinc ions in synthetic waste water at pH 5. The maximum removal efficiency of zinc ions tea factory waste adsorbent was calculated as 96%. The results prove that the low-cost tea factory waste can be used as a potential adsorbent in developing countries like India. The experiment result showed that maximum removal of zinc ion by tea waste is 96%.


Tea factory waste, heavy metals, adsorption, zinc ions, synthetic waste water

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