Research Center for Ecological Engineering and Nonlinear Science, North China Electric Power University, Beijing 102206, China.
Research Center for Ecological Engineering and Nonlinear Science, North China Electric Power University, Beijing 102206, China.
Bioresour Technol. 2013 Oct;146:628-636. doi: 10.1016/j.biortech.2013.07.148. Epub 2013 Aug 6.
The present study proposes a novel strategy to get a rational production of biogas of the biomass residues from phytoremediation. This study investigates physiological responses, cadmium (Cd) accumulation and biogas production from canola, oat and wheat in pot and batch experiments. The results indicate that (1) aerial biomasses for canola, oat and wheat were enhanced by 5 mg Cd/kg soil by 19.41%, 8.78% and 3.38%, and the upper limit of Cd concentration that canola, oat and wheat can tolerate for aerial biomass production were 50, 10 and 10 mg Cd/kg soil; (2) canola accumulates more Cd than oat and wheat in its aerial parts; (3) cumulative biogas yields were 159.37%, 179.23% and 111.34% of the control when Cd in the shoot were 2.00±0.44, 39.80±1.25 and 6.37±0.15 mg Cd/kg biomass for canola, oat and wheat. Phytoremediation in cooperation with bioenergy production provide new insights for both soil remediation and energy research.
本研究提出了一种从植物修复生物质残渣中获得合理沼气生产的新策略。本研究通过盆栽和批量实验研究了油菜、燕麦和小麦的生理反应、镉（Cd）积累和沼气生产。结果表明：（1）土壤中 5mg/kg 的 Cd 可使油菜、燕麦和小麦地上生物量分别增加 19.41%、8.78%和 3.38%，油菜、燕麦和小麦能耐受地上生物量生产的 Cd 浓度上限分别为 50、10 和 10mg/kg；（2）油菜地上部分比燕麦和小麦积累更多的 Cd；（3）当油菜、燕麦和小麦地上部的 Cd 含量分别为 2.00±0.44、39.80±1.25 和 6.37±0.15mg/kg 时，油菜、燕麦和小麦的累积沼气产量分别为对照的 159.37%、179.23%和 111.34%。植物修复与生物能源生产的结合为土壤修复和能源研究提供了新的思路。
