کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4409887 1307515 2012 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Greenhouse evaluation and environmental impact assessment of different urine-derived struvite fertilizers as phosphorus sources for plants
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Greenhouse evaluation and environmental impact assessment of different urine-derived struvite fertilizers as phosphorus sources for plants
چکیده انگلیسی

A selection of six urine-derived struvite fertilizers generated by innovative precipitation technologies was assessed for their quality and their effectiveness as phosphorus sources for crops. Struvite purity was influenced by drying techniques and magnesium dosage. In a greenhouse experiment, the urine fertilizers led to biomass yields and phosphorus uptakes comparable to or higher than those induced by a commercial mineral fertilizer. Heavy metal concentrations of the different struvite fertilizers were below the threshold limits specified by the German Fertilizer and Sewage Sludge Regulations. The computed loading rates of heavy metals to agricultural land were also below the threshold limits decreed by the Federal Soil Protection Act. Urine-derived struvite contributed less to heavy metal inputs to farmland than other recycling products or commercial mineral and organic fertilizers. When combined with other soil conditioners, urine-derived struvite is an efficient fertilizer which covers the magnesium and more than half of the phosphorus demand of crops.


► Six urine-derived struvite fertilizers were assessed as phosphorus sources for crops.
► They induced biomass yields comparable to those produced by a commercial fertilizer.
► Heavy metal concentrations of the urine fertilizers were below the threshold limits.
► Calculated heavy metal loading rates to farmland were below the threshold limits.
► Struvite covered the magnesium and more than half of the phosphorus demand of crops.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 89, Issue 10, November 2012, Pages 1202–1210
نویسندگان
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