کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4409893 1307515 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Extraction of raw sewage sludge containing iron phosphate for phosphorus recovery
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Extraction of raw sewage sludge containing iron phosphate for phosphorus recovery
چکیده انگلیسی

The objective of the present study was to establish an alkali extraction technology for FePO4-containing sewage sludge obtained from a wastewater treatment system that includes phosphorous removal by iron electrolysis. By clarifying the extraction properties of phosphorous, organic matter, and inorganic matter, conditions for alkali extraction were optimized. As a result, it was suggested that unheated phosphorous extraction would be superior for FePO4-containing sewage sludge. And, extraction methods and sewage sludge properties were also compared, and the noteworthy result that extraction of metals can be suppressed to extremely low amounts with alkali extraction as compared with acid extraction was obtained. A new insight was also gained that, as compared with the use of incinerated ash reported in previous studies, alkali extraction was more efficient when raw sewage sludge was used.


► Raw sewage sludge is more effective than incinerated ash for phosphorous extraction using alkali.
► An unheated method would be superior for FePO4-containing sewage sludge.
► The alkali extraction using FePO4-containing sewage sludge was allowed to extract phosphorus selectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 89, Issue 10, November 2012, Pages 1243–1247
نویسندگان
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