التفاصيل البيبلوغرافية
| العنوان: |
Engineered Biochar Reclaiming Phosphate from Aqueous Solutions: Mechanisms and Potential Application as a Slow-Release Fertilizer. |
| المؤلفون: |
Ying Yao1,2, Bin Gao1 bg55@ufl.edu, Jianjun Chen3, Liuyan Yang4 |
| المصدر: |
Environmental Science & Technology. 8/6/2013, Vol. 47 Issue 15, p8700-8708. 9p. |
| مصطلحات موضوعية: |
*BIOCHAR, *MICROBIOLOGY, TOMATOES, PLANT cells & tissues, PHOSPHATE transport proteins, SORPTION, CHEMICAL reactions, MAGNESIUM, FERTILIZERS |
| مستخلص: |
This work explored the potential application of an engineered biochar prepared from Mg-enriched tomato tissues to reclaim and reuse phosphate (P) from aqueous solution. Findings from batch sorption experiments suggested that, although sorption of P on the biochar was controlled by relatively slow kinetics, the maximum P sorption capacity of the biochar could reach >100 mg·g-1. Mathematical modeling and postsorption characterization results indicated that the sorption was mainly controlled by two mechanisms: precipitation of P through chemical reaction with Mg particles and surface deposition of P on Mg crystals on biochar surfaces. Most of the P retained in the engineered biochar was bioavailable and could be released equally at multiple successive extractions. In addition, the P-laden biochar significantly stimulated grass seed germination and growth. These results suggested the postsorption biochar can be cycled back directly to soils as an effective slow-release P-fertilizer. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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