کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1055564 1485244 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phytoavailability of Cd and Pb in crop straw biochar-amended soil is related to the heavy metal content of both biochar and soil
ترجمه فارسی عنوان
زيست فراهمی Cd و Pb در خاک اصلاح شده با بیوچار کاه محصول با مقدار فلزات سنگین هر دو ماده زراعی و خاک مرتبط است
کلمات کلیدی
کادمیوم؛ سرب؛ بیوچار ؛ Cd قابل استخراج NH4NO3 ؛ Pb قابل استخراج NH4NO3
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی


• Heavy metal free- (FC) and rich- (RC) biochars were used as soil amendments.
• FC application immobilized Cd and Pb in both lightly and heavily contaminated soils.
• RC application may increase Cd accumulation risk in lightly contaminated soil.
• RC application could immobilize Cd and Pb in heavily contaminated soil.
• Biochar effect on heavy metals related to their concentrations in soil and biochar.

Crop straw biochar incorporation may be a sustainable method of amending soil, but feedstock-related Cd and Pb content is a major concern. We investigated the effects of heavy metal-rich (RC) and -free biochar (FC) on the phytoavailability of Cd and Pb in two acidic metalliferous soils. Biochar significantly increased soil pH and improved plant growth. Pb in soil and plant tissues significantly decreased after biochar application, and a similar pattern was observed for Cd after FC application. RC significantly increased NH4NO3-extractable Cd in both lightly contaminated (YBS) and heavily contaminated soils (RS). The Cd content of plants grown on YBS increased, whereas it decreased on RS. The Cd and Pb input–output balance suggested that RC application to YBS might induce a soil Cd accumulation risk. Therefore, identifying heavy metal contamination in biochar is crucial before it is used as a soil amendment.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Management - Volume 168, 1 March 2016, Pages 245–251
نویسندگان
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