Journals / Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi / 2019 / Cilt: 25 Sayı: 3
Investigation of the effect of binding material and Thiobacillus thiooxidans on the heavy metals mobilization in the mine tailings
- Pages
- 268–279
- Publication Date
- 2019-06-28
- DOI
- —
Özet
Normal 0 false false false TR X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Normal Tablo"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri",sans-serif; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-ansi-language:TR;} Çalışmada, terk edilmiş bir Pb-Zn madeni ve işletilmekte olan bor madeni atıklarındaki arsenik (As), bor (B), kadmiyum (Cd), bakır (Cu), mangan (Mn), kurşun (Pb), talyum (Tl) ve çinko (Zn) elementlerinin toplam konsantrasyonları, kimyasal bağlanma formlarındaki dağılımları ile bu elementlerin bağlayıcı materyal ve asidik bakteri olan Thiobacillus thiooxidans varlığında mobilizasyonları incelenmiştir. Ayrıca atık ve bağlayıcı materyallerdeki sülfür ve karbonat miktarları da belirlenerek, statik testlere göre atıkların asit nötralize etme potansiyeli hesaplanmıştır. Mobilizasyon çalışmaları için iki farklı bölgeden temin edilen atık ile bağlayıcı materyal olarak seçilen leonardit ve evsel katı atık kompostu farklı oranlarda karıştırılmak suretiyle (10/0, 9.5/0.5, 9/1, 8/2) deneyler yürütülmüştür. Ayrıca, sülfür oksitleyen bir bakteri olan Thiobacillus thiooxidans’ın ortama ilave edilmesiyle mobilizasyona olan etkisi çalışılmıştır. Standart bir liç testi olan EPA 1310B Ekstraksiyon Prosedürü kullanılarak mobilize olan ağır metaller tespit edilmiş, bulgular SPSS 24 programı ile istatistiksel olarak değerlendirilerek çalışılan parametreler arasındaki korelasyonlar ortaya çıkarılmıştır. Leonardit ve kompostun maden atıklarına karıştırılmasıyla, ağır metal mobilitesinde istatistiksel olarak anlamlı bir azalma görülmemiştir. Ancak farklı bağlayıcı materyaller, ağır metal türüne göre farklı etkiler göstermiştir. Sonuç olarak, ortamda Thiobacillus thiooxidans olması durumunda ağır metal mobilitesinin arttığı ve bunun öncelikli olarak değişken ve asitle çözülebilir fraksiyonda ve sonrasında indirgenebilir fraksiyon ile organik fraksiyonlarına bağlı metal miktarı ile doğru orantılı olduğu anlaşılmıştır.
Cite This Article
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