Differences in soil Cd immobilization and blockage of rice Cd uptake by biochar derived from crop residue and bone − A 2-year field experiment
Biochar is widely recognized as an effective amendment for soils contaminated with cadmium (Cd). However, the properties and elemental compositions of biochar derived from different feedstocks may significantly impact the transfer of Cd in the soil-rice system. This study conducted a two-year field...
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Elsevier
2025-01-01
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| Series: | Ecotoxicology and Environmental Safety |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651324016099 |
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| author | Zhongjun Xue Fengfeng Sui Yanjie Qi Siyu Pan Ning Wang Rongjun Bian Stephen Joseph Xuhui Zhang Lianqing Li Genxing Pan |
| author_facet | Zhongjun Xue Fengfeng Sui Yanjie Qi Siyu Pan Ning Wang Rongjun Bian Stephen Joseph Xuhui Zhang Lianqing Li Genxing Pan |
| author_sort | Zhongjun Xue |
| collection | DOAJ |
| description | Biochar is widely recognized as an effective amendment for soils contaminated with cadmium (Cd). However, the properties and elemental compositions of biochar derived from different feedstocks may significantly impact the transfer of Cd in the soil-rice system. This study conducted a two-year field trial in Cd-contaminated paddy soil. Rapeseed straw biochar (REB), rice husk biochar (RHB), and bone char (BOC) were applied once at rates of 0 t ha−1 (CK) and 15 t ha−1, respectively. The results indicated that biochar significantly decreased grain Cd concentrations by on average of 60.1 % and 22.9 % in 2021 and 2022, respectively. BOC significantly decreased CaCl2-Cd concentration by on average of 52.1 % and 64.7 % during two rice growing seasons, which was higher than that of crop biochar (22.7 % and 17.8 %). Soil exchangeable Ca and dissolved P in BOC treatment were higher, and had significantly negatively correlated with CaCl2-Cd (r = -0.50; r = -0.724). REB with higher S content efficiently increased the proportion of organics and sulfides bounding Cd. Except for BOC, REB and RHB significantly enhanced Cd fixation in IP by 44.4 %-92.0 % and 42.8 %-59.5 % in two years, in which IP-bound Fe and IP-bound Cd in REB were by 10.9 % and by 9.11 %-27.4 % higher than those of RHB respectively. The electron donating capacity of REB was 2.21-folds higher than that of RHB, which could promote IP formation by enhancing Fe(Ⅲ) reduction. RHB decreased Cd transformation from roots to shoots by 20.6 %-30.3 % compared to REB and BOC. Higher Si content in rice root in RHB treatment may promote complexation and deposition of Si hemicellulose-bound Cd in the root cell walls. This study reveals the important role of biochar's elemental composition and properties in soil Cd immobilization and the mitigation of rice Cd uptake. |
| format | Article |
| id | doaj-art-7e133d0b66d2486080674723d9fbe0d3 |
| institution | Kabale University |
| issn | 0147-6513 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
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| series | Ecotoxicology and Environmental Safety |
| spelling | doaj-art-7e133d0b66d2486080674723d9fbe0d32025-02-12T05:29:32ZengElsevierEcotoxicology and Environmental Safety0147-65132025-01-01290117533Differences in soil Cd immobilization and blockage of rice Cd uptake by biochar derived from crop residue and bone − A 2-year field experimentZhongjun Xue0Fengfeng Sui1Yanjie Qi2Siyu Pan3Ning Wang4Rongjun Bian5Stephen Joseph6Xuhui Zhang7Lianqing Li8Genxing Pan9Institute of Resources, Ecosystem and Environment of Agriculture, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, ChinaSchool of Environmental Science and Engineering, Yancheng Institute of Technology, No. 211 Jianjun East Road, Yancheng 224051, China; Jiangsu Engineering Research Center of Biomass Waste Pyrolytic Carbonization & Application, Yancheng 224051, ChinaInstitute of Resources, Ecosystem and Environment of Agriculture, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, ChinaInstitute of Resources, Ecosystem and Environment of Agriculture, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, ChinaInstitute of Resources, Ecosystem and Environment of Agriculture, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, ChinaInstitute of Resources, Ecosystem and Environment of Agriculture, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, ChinaInstitute of Resources, Ecosystem and Environment of Agriculture, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, China; School of Materials Science and Engineering, University of New South Wales, Sydney, NSW 2052, AustraliaInstitute of Resources, Ecosystem and Environment of Agriculture, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, China; Correspondence to: the Institute of Resources, Ecosystem and Environment of Agriculture and Center of Biochar and Green Agriculture, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, ChinaInstitute of Resources, Ecosystem and Environment of Agriculture, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, China; Correspondence to: the Institute of Resources, Ecosystem and Environment of Agriculture and Center of Biochar and Green Agriculture, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, ChinaInstitute of Resources, Ecosystem and Environment of Agriculture, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, ChinaBiochar is widely recognized as an effective amendment for soils contaminated with cadmium (Cd). However, the properties and elemental compositions of biochar derived from different feedstocks may significantly impact the transfer of Cd in the soil-rice system. This study conducted a two-year field trial in Cd-contaminated paddy soil. Rapeseed straw biochar (REB), rice husk biochar (RHB), and bone char (BOC) were applied once at rates of 0 t ha−1 (CK) and 15 t ha−1, respectively. The results indicated that biochar significantly decreased grain Cd concentrations by on average of 60.1 % and 22.9 % in 2021 and 2022, respectively. BOC significantly decreased CaCl2-Cd concentration by on average of 52.1 % and 64.7 % during two rice growing seasons, which was higher than that of crop biochar (22.7 % and 17.8 %). Soil exchangeable Ca and dissolved P in BOC treatment were higher, and had significantly negatively correlated with CaCl2-Cd (r = -0.50; r = -0.724). REB with higher S content efficiently increased the proportion of organics and sulfides bounding Cd. Except for BOC, REB and RHB significantly enhanced Cd fixation in IP by 44.4 %-92.0 % and 42.8 %-59.5 % in two years, in which IP-bound Fe and IP-bound Cd in REB were by 10.9 % and by 9.11 %-27.4 % higher than those of RHB respectively. The electron donating capacity of REB was 2.21-folds higher than that of RHB, which could promote IP formation by enhancing Fe(Ⅲ) reduction. RHB decreased Cd transformation from roots to shoots by 20.6 %-30.3 % compared to REB and BOC. Higher Si content in rice root in RHB treatment may promote complexation and deposition of Si hemicellulose-bound Cd in the root cell walls. This study reveals the important role of biochar's elemental composition and properties in soil Cd immobilization and the mitigation of rice Cd uptake.http://www.sciencedirect.com/science/article/pii/S0147651324016099BiocharCadmium immobilizationElectron exchange capacityIron plaqueRice paddy |
| spellingShingle | Zhongjun Xue Fengfeng Sui Yanjie Qi Siyu Pan Ning Wang Rongjun Bian Stephen Joseph Xuhui Zhang Lianqing Li Genxing Pan Differences in soil Cd immobilization and blockage of rice Cd uptake by biochar derived from crop residue and bone − A 2-year field experiment Ecotoxicology and Environmental Safety Biochar Cadmium immobilization Electron exchange capacity Iron plaque Rice paddy |
| title | Differences in soil Cd immobilization and blockage of rice Cd uptake by biochar derived from crop residue and bone − A 2-year field experiment |
| title_full | Differences in soil Cd immobilization and blockage of rice Cd uptake by biochar derived from crop residue and bone − A 2-year field experiment |
| title_fullStr | Differences in soil Cd immobilization and blockage of rice Cd uptake by biochar derived from crop residue and bone − A 2-year field experiment |
| title_full_unstemmed | Differences in soil Cd immobilization and blockage of rice Cd uptake by biochar derived from crop residue and bone − A 2-year field experiment |
| title_short | Differences in soil Cd immobilization and blockage of rice Cd uptake by biochar derived from crop residue and bone − A 2-year field experiment |
| title_sort | differences in soil cd immobilization and blockage of rice cd uptake by biochar derived from crop residue and bone a 2 year field experiment |
| topic | Biochar Cadmium immobilization Electron exchange capacity Iron plaque Rice paddy |
| url | http://www.sciencedirect.com/science/article/pii/S0147651324016099 |
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