METHOD FOR REMOVING HEAVY METAL ELEMENT IN BIOMASS AND METHOD FOR DECONTAMINATING HEAVY METAL-CONTAMINATED SOIL

摘要

PROBLEM TO BE SOLVED: To provide a method for highly efficiently extracting heavy metal elements contained in biomass such as rice straw, rice hulls, soybeans and plants at a low cost. SOLUTION: The method for removing heavy metal elements in biomass comprises the steps of: immersing the heavy metal element-containing biomass in a carboxylic acid aqueous solution; keeping the biomass in the carboxylic acid aqueous solution to elute heavy metal elements; and withdrawing the heavy metal element-removed biomass from the carboxylic acid aqueous solution. COPYRIGHT: (C)2009,JPO&INPIT