کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8868799 1622536 2018 73 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
How to tackle the stringent sulfate removal requirements in mine water treatment-A review of potential methods
ترجمه فارسی عنوان
چگونگی مقابله با نیازهای جدی سولفات در تصفیه آب معدنی - بررسی روشهای بالقوه
کلمات کلیدی
زهاب معدن اسید، محدودیت تخلیه، سولفات، بازیابی گوگرد، آلودگی آب
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست بهداشت، سم شناسی و جهش زایی
چکیده انگلیسی
Sulfate (SO42-) is a ubiquitous anion in natural waters. It is not considered toxic, but it may be detrimental to freshwater species at elevated concentrations. Mining activities are one significant source of anthropogenic sulfate into natural waters, mainly due to the exposure of sulfide mineral ores to weathering. There are several strategies for mitigating sulfate release, starting from preventing sulfate formation in the first place and ending at several end-of-pipe treatment options. Currently, the most widely used sulfate-removal process is precipitation as gypsum (CaSO4·2H2O). However, the lowest reachable concentration is theoretically 1500 mg L−1 SO42- due to gypsum's solubility. At the same time, several mines worldwide have significantly more stringent sulfate discharge limits. The purpose of this review is to examine the process options to reach low sulfate levels (< 1500 mg L−1) in mine effluents. Examples of such processes include alternative chemical precipitation methods, membrane technology, biological treatment, ion exchange, and adsorption. In addition, aqueous chemistry and current effluent standards concerning sulfate together with concentrate treatment and sulfur recovery are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Research - Volume 167, November 2018, Pages 207-222
نویسندگان
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