Fixation Effect of Modified Bamboo Charcoal on Typical Heavy Metals in Sediment

In this study, we studied the influence of dosage modified bamboo charcoal (KAM-500-400-3) on fixation effect single Cu(II)-contaminated and mixed Cu(II)–Cd(II)-contaminated sediment. The results showed that it could effectively fix heavy metals in both sediment types. sediment, when amount added KAM500-400-3 was greater than or equal to 5%, Cu(II) content overlying pore water substantially reduced, form metal changed from acid-extractable state a relatively stable, reducible, oxidizable, residual state, its bioavailability markedly toxic leaching TCLP also gradually reduced. polluted by Cu(II)–Cd(II), Cd(II) not be detected addition 2.5%. contents considerably decreased they transformed into other forms with low bioavailability, which oxidizable so lower detection limit. toxicity leached decreased. This adding helps inhibiting release contaminated bodies, is material can adsorb