Poster (EARTH)

[PE1-023] Preparation and evaluation of carbon-based heavy metal-adsorbent made from bamboo by sulfur treatment

○PAN ZHAOXUAN -¹ (1. CHIBA university)

Keywords:sulfur impregnation;heavy metal adsorption;bamboo

This study attempted to prepare a novel carbonaceous adsorbent for heavy metal removal from bamboo by simple sulfur impregnation. The bamboo was immersed in with K₂S solution and then heated at 400 degrees Celsius for 1 hour in nitrogen to produce the adsorbent. The mineralogical phase of the samples was determined by X-ray diffraction analysis, and the ability of the product to adsorb Pb²⁺ was examined by Atomic absorption analysis. The morphologies and elemental contents of the product were analyzed by SEM and EDS analysis. The porous product with heavy metal removal can be prepared using K₂S impregnation. With increasing of K₂S concentration, removal ability of the product for Pb²⁺ increased. The product with Pb²⁺ removal can be obtained by short time K₂S immersion. Pb²⁺ removal by the product was caused by the formation of Leadhillite[Pb₄SO₄(CO₃)₂(OH)₂].