دورية أكاديمية
Effects of iron-modified biochar with S-rich and Si-rich feedstocks on Cd immobilization in the soil-rice system
| العنوان: | Effects of iron-modified biochar with S-rich and Si-rich feedstocks on Cd immobilization in the soil-rice system |
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| المؤلفون: | Sui, F, Kang, Y, Wu, H, Li, H, Wang, J, Joseph, S, Munroe, P, Li, L, Pan, G |
| المصدر: | urn:ISSN:0147-6513 ; urn:ISSN:1090-2414 ; Ecotoxicology and Environmental Safety, 225, 112764 |
| بيانات النشر: | Elsevier |
| سنة النشر: | 2021 |
| المجموعة: | UNSW Sydney (The University of New South Wales): UNSWorks |
| مصطلحات موضوعية: | Cadmium, Charcoal, Iron, Oryza, Soil, Cd remobilization, Fe and S interaction, Iron plaque, Rape straw, Rice husk, Rice straw, anzsrc-for: 03 Chemical Sciences, anzsrc-for: 05 Environmental Sciences, anzsrc-for: 11 Medical and Health Sciences |
| الوصف: | Fe-modified biochar has been shown to have high sorption ability for cadmium (Cd), while Cd immobilization effects of Fe-modified biochars with Si-rich and S-rich feedstocks have been rarely addressed. To explore the effects of Fe-modified Si-rich and S-rich biochars on Cd translocation in the soil-rice system, a pot experiment was carried out with an acidic Cd-contaminated sandy loam paddy from central South China and a late season rice cultivate during July to November 2018. Rice straw and rice husk were chosen as Si-rich feedstocks, and rape straw was applied as S-rich feedstock, these feedstocks were further collected and pyrolyzed at 450 °C. Pristine and Fe-impregnated rice straw (BRS/BRS-Fe), rice husk (BRH/BRH-Fe) and rape straw (BRE/BRE-Fe) biochars were applied at 0 and 10 t/ha, respectively. The reductions in Cd concentrations in rice grains were 23.8%, 22.3% and 46.1% with treatments of BRE, BRS and BRH, respectively, compared to the control. Compared to other pristine biochars, BRH is more effective in Cd remediation in paddy soil. For Fe-modified biochars, BRE-Fe achieved the highest reductions in Cd concentrations in rice grains with 46.7% and 30.1%, compared with the control and BRE, respectively. BRE-Fe decreased Cd remobilization from leaves to grains. Only BRE-Fe enhanced the formation and Cd sorption capacity of iron plaque. BRS-Fe and BRH-Fe enhanced Fe content in rice plants, which might induce the reduction in iron plaque formation. Fe and S-contained complexes contents increased in the contaminated pristine biochar particles, but reduced in the contaminated BRE-Fe particles. Therefore, Fe modification could not enhance Cd immobilization effect of Si-rich biochar, while Fe modified S-rich biochar has promising potential for Cd remediation with enhancement in iron plaque formation and Cd fixation in rice leaves. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | unknown |
| العلاقة: | http://hdl.handle.net/1959.4/unsworks_78210Test; https://unsworks.unsw.edu.au/bitstreams/6a177d5c-9e63-46f7-9329-8e9ad592cb84/downloadTest; https://doi.org/10.1016/j.ecoenv.2021.112764Test |
| DOI: | 10.1016/j.ecoenv.2021.112764 |
| الإتاحة: | https://doi.org/10.1016/j.ecoenv.2021.112764Test http://hdl.handle.net/1959.4/unsworks_78210Test https://unsworks.unsw.edu.au/bitstreams/6a177d5c-9e63-46f7-9329-8e9ad592cb84/downloadTest |
| حقوق: | open access ; https://purl.org/coar/access_right/c_abf2Test ; CC-BY-NC-ND ; https://creativecommons.org/licenses/by-nc-nd/4.0Test/ ; CC BY-NC-ND ; free_to_read |
| رقم الانضمام: | edsbas.AB837ECC |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.ecoenv.2021.112764 |
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