| 唐行灿1，陈金林1，张民2.生物炭对铜、铅、镉复合污染土壤的修复效果[J].广东农业科学,2014,41(12):67-71 |
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生物炭对铜、铅、镉复合污染土壤的修复效果 |
| Remediation effects of biochar on soil co-contaminatedby copper, lead and cadmium |
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| DOI： |
| 中文关键词: 生物炭 重金属复合污染土壤 重金属生物有效性 小白菜 |
| 英文关键词: biochar heavy metals co-contaminated soil boavailability of heavy metals pakchoi |
| 基金项目:国家“十二五”科技支撑计划项目（2011BAD11B01，
2011BAD11B02）；国家“948”重点项目（2011-G30）；江苏高校优
势学科建设工程项目 |
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| 摘要点击次数: 1560 |
| 全文下载次数: 642 |
| 中文摘要: |
| 将玉米秸热解制备的生物炭施入铜、铅、镉复合污染土壤，通过土壤培养实验和小白菜盆栽实验，探究
热解温度（400、700益）和施加量（1%、2%、5%）对生物炭修复重金属污染土壤效果的影响。结果表明，施加400益生物
炭（BC400）和700益生物炭（BC700）后土壤pH 分别增加0.14耀0.52 和0.27耀0.78。施加两种生物炭均可以使土壤重金
属形态钝化，降低小白菜对重金属的吸收；而且生物炭施加量越大，效果越明显。对重金属生物有效性降低的改良效
果顺序为BC700>BC400。在生物炭施加量相同的情况下，BC400 处理小白菜可食部干重大于BC700 处理。同时，相对
于施加量5%的BC700 处理，施加5%的BC400 能更明显地增加土壤微生物的生物量。 |
| 英文摘要: |
| In this paper, two corn straw derived biochars prepared at 400益(BC400) and 700益(BC700) were added
into soil co-contaminated by copper, lead, and cadmium to study the effectiveness of biochars incorporation on ameliorating
co -contaminated soil by soil incubation experiment and pot experiment of pakchoi. The results showed that soil pH
increased by 0.14-0.52 and 0.27-0.78 after BC400 and BC700 addition respectively. Both biochars had the ability to
prompt the inactivation of heavy metals in soil, and reduce metals content of edible part and root of pakchoi. The effect of
decreasing bioavailability of metals in soil enhanced as the application rate of biochar rose. The reducing bioavailability of
metals by different biochar amendments was in the following order: BC700>BC400. At a given biochar content, compared
with BC700, soil amended with BC400 resulted in elevated biomass dry weight of edible part of pakchoi. Meanwhile,
compared with BC700, greater microbial biomass increase was observed with the BC400 application. |
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