Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 5/17/2012
Publication Date: N/A
Technical Abstract: Char(coal) and other black carbon materials can comprise up to 35% of total organic carbon in US agricultural soils, and are known to strongly and often irreversibly bind contaminants including heavy metals. Black carbon has received renewed interests in recent years as a solid co-product formed during thermochemical waste-to-energy conversion (slow/fast pyrolysis and gasification) of agricultural wastes such as plant residue, nutshell, and manure. Amendment of char product (biochar) in soil is a promising, cost-effective remediation strategy for contaminated soils, along with added benefits including carbon sequestration. This presentation will focus on biochar-induced changes in heavy metals and agrochemicals in both agricultural and contaminated soils, with a particular emphasis on the reversibility of contaminant sorption. The results suggest the importance of soil property (pH, CEC, TOC) and contamination scenarios in designing specific biochar for purported functions.