石灰与生物炭配施对不同浓度镉污染土壤修复

王刚; 孙育强; 杜立宇; 吴岩; 梁成华; 王沛文; 郭炜辰

doi:10.13870/j.cnki.stbcxb.2018.06.055

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石灰与生物炭配施对不同浓度镉污染土壤修复

更新时间：2025-03-12

- 石灰与生物炭配施对不同浓度镉污染土壤修复
- Study on Remediation of Cd-Contaminated Soils with Different Concentrations of Lime and Biochar
- 水土保持学报 2018年32卷第6期页码：379-383
- 作者机构：
  
  1. 沈阳农业大学土地与环境学院,沈阳,110866
  2. 河北省土壤肥料总站,石家庄,050021
- 作者简介：
  
  [ "王刚(1993-),男,硕士研究生,主要从事重金属污染与修复研究。E-mail:m17640178310@163.com" ]
- 基金信息：
  
  国家重点研发计划项目（2016YFC0501205-04）
- DOI：10.13870/j.cnki.stbcxb.2018.06.055
  中图分类号： X53
- 纸质出版：2018
- 稿件说明：
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王刚, 孙育强, 杜立宇, 等. 石灰与生物炭配施对不同浓度镉污染土壤修复[J]. 水土保持学报, 2018,32(6):379-383.

WANG Gang, SUN Yuqiang, DU Liyu, et al. Study on Remediation of Cd-Contaminated Soils with Different Concentrations of Lime and Biochar[J]. 2018, 32(6): 379-383.
王刚, 孙育强, 杜立宇, 等. 石灰与生物炭配施对不同浓度镉污染土壤修复[J]. 水土保持学报, 2018,32(6):379-383. DOI： 10.13870/j.cnki.stbcxb.2018.06.055.

WANG Gang, SUN Yuqiang, DU Liyu, et al. Study on Remediation of Cd-Contaminated Soils with Different Concentrations of Lime and Biochar[J]. 2018, 32(6): 379-383. DOI： 10.13870/j.cnki.stbcxb.2018.06.055.

摘要

通过室内培养试验，研究生物炭与石灰不同用量配施对镉污染土壤pH和镉赋存形态的影响。结果表明，生物炭与石灰配施能够明显提高污染土壤pH，且随着施入量的增加pH提升效果显著。随着石灰和生物炭配施用量的增加，土壤交换态镉降低比例逐渐增大。培养60天后，镉污染浓度为5 mg/kg的土壤交换态镉含量同对照处理相比依次减少36.80%，49.12%和57.38%；而土壤镉污染浓度为20 mg/kg的土壤交换态镉含量较对照相比分别降低29.27%，31.68%和39.03%。2个浓度中土壤碳酸盐结合态镉、铁锰氧化物结合态镉和有机结合态镉均有所增加，残渣态镉虽有所增加，但在不同浓度之间存在差异。总体来看，本试验用量条件下，石灰和生物炭配施对污染浓度为5 mg/kg的土壤镉钝化效果优于污染浓度为20 mg/kg的土壤。

Abstract

Through indoor incubation experiments

the effects of different application rates of biochar and lime on soil pH and cadmium (Cd) form in Cd-contaminated soil were studied. The results showed that the combination of biochar and lime could significantly increase soil pH

and these effects increased significantly with the increasing application amounts. With the increasing application amounts of lime and biochar

the exchangeable Cd decreased gradually. After 60 days of incubation

the exchangeable Cd contents in soil with a Cd concentration of 5 mg/kg was reduced by 36.80%

49.12%

and 57.38%

respectively

compared with the control. The soil exchangeable Cd contents in the soil containing 20 mg/kg Cd was reduced by 29.27%

31.68%

and 39.03%

respectively

compared with the control. The carbonate-bound Cd

iron-manganese oxide-bound Cd

and organic-bound Cd were increased in two soils. Although the residual Cd was increased

there were differences among different concentrations. Overall

under the conditions of this experiment

combined application of lime and biochar had better effect on the Cd inactivation in soil with a concentration of 5 mg/kg than that of a soil with a concentration of 20 mg/kg.

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