Biochar was for the first time produced from Suaeda glauca. The immobilization of Pb and Cd by this biochar and pig manure biochar was examined in two types of soils by diethylene triamine pentaacetic acid (DTPA) extraction. Addition of biochars decreased DTPA extractable Pb and Cd in Fluvo-aquic soil with reduction rates being 11.3%–48.4% and 0.74%–64.9% compared with the control treatment. The pig manure biochar favored the immobilization of Pb and S. glauca biochar favored the immobilization of Cd. Biochars can effectively immobilize heavy metals in Fluvo-aquic soil. However, the addition of biochars increased extractable Pb and Cd in red soil, with pig manure biochars showing greater rates. This is ascribed to that the competition effects of ions released from biochar enhanced the moving of heavy metals from iron and manganese oxides bound form to organic matter bound form, and hence enhanced the mobility and bioavailability of heavy metals.

中文翻译：

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使用猪粪和小白藜中的生物炭将铅和镉固定在土壤中。

Biochar首次是由Suaeda glauca生产的。通过二亚乙基三胺五乙酸（DTPA）萃取，在两种土壤中检测了这种生物炭和猪粪生物炭对Pb和Cd的固定作用。与对照处理相比，生物炭的添加减少了潮水土壤中DTPA可提取的Pb和Cd，减少率分别为11.3％–48.4％和0.74％–64.9％。猪粪生物炭有利于Pb和S. glauca的固定化生物炭有利于镉的固定化。生物炭可以有效地固定潮水土壤中的重金属。但是，添加生物炭增加了红壤中可萃取的Pb和Cd，猪粪中的生物炭显示出更高的比率。这归因于从生物炭释放的离子的竞争作用增强了重金属从铁和锰氧化物结合形式向有机物结合形式的移动，因此增强了重金属的迁移率和生物利用度。