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Removal of metal from acid mine drainage (AMD) by using natural zeolite of Nizarneshwar Hills of Western India

ازالة الفلزات من مياة صرف المناجم الحامضية بواسطة استخدام الزيوليت الطبيعى فى تلال النيزرنشاور غرب الهند

Arabian Journal of Geosciences volume 4, pages 85–89 (2011)Cite this article

Abstract

The mining industry faces stringent effluent discharge regulations and has acknowledged that it is necessary to look into innovative technologies to recycle considerable amount of effluent rather than discharging into surface water. Effluents from mines give rise to aesthetic unpleasantness. The focus of the investigations was to cope with more stringent effluent discharge regulations and to protect the ecosystem from harmful pollutants in the mine effluents. Copper is one of the heavy metal in the mine systems, which are known to be a harmful element. The present study has been undertaken to investigate a process that might remove Cu(II) from mine waste water by using natural zeolite, such as stilbite, and compared with synthetic resins like CSA-9 and CSA-609D. In this study, natural zeolite was used as a low-cost adsorbent to evaluate its ability to remove heavy metals from acid mine drainage. The zeolite used in this study is the natural clay mineral from the Nizarneshwar Hills of Western India. Three resins tested are CSA-9, natural zeolite–stilbite, and CSA-609D. Batch testing has been conducted to select effective ion-exchange resins for copper removal and to determine effective regenerants for regeneration of exhausted resins. All tests were conducted at bench scale and in batch mode. Three strong acid cation exchangers were evaluated to compare their metal removal capacities. The metal concentration in the effluent was reduced with all resins tested. It was found that, among all the three types of natural zeolite, stilbite shows the highest removal efficiency of copper in every parameter that is considered for evaluating the performance of resins.

Abstract

تواجه صناعة التعدين لوائح صارمة لتصريف النفايات السائلة واعترف بأن من الضروري النظر في تكنولوجيات مبتكرة لإعادة تدوير كمية كبيرة من النفايات السائلة وليس إلى تصريفه في المياه السطحية. النفايات السائلة من المناجم تثير البغض الجمالي. وتتركز التحقيقات على التعامل بأكثر صرامة لتصريف النفايات السائلة واللوائح لحماية النظام البيئي من الملوثات الضارة والنفايات السائلة في المنجم. النحاس واحدا من المعادن الثقيلة الموجودة في أنظمة المناجم والذي يعرف بأنه عنصر ضار.

الدراسة الحالية أخذت في الاعتبار التحقق من العمليات التي من الممكن أن تزيل النحاس من مياه المناجم الملوثة بواسطة استخدام الزيوليت الطبيعي مثل الاستيلبيت ومقارنته مع الراتنج الصناعي مثل CSA-9 and CSA-609D. استخدم الزيوليت الطبيعي في هذه الدراسة كمكثف قليل التكلفة لتقيم قابليته لإزالة المعادن الثقيلة من مياه صرف المناجم الحامضية. والزيوليت المستخدم فى هذه الدراسة عبارة عن معادن طين طبيعية من تلال النيزرنشاور في غرب الهند.

اختبرت ثلاث أنواع من الراتنج وهى CSA-9 والزيوليت – استيلبيت الطبيعي و CSA-609D. ونتيجة الاختبارات التي أجريت لاختيار الراتنج المؤثر في التبادل الايونى لأزاله النحاس وتعين منتج ثاني ذو فاعلية لأجيال الراتنج المستنفذ. وكانت جميع الاختبارات التي أجريت على مقياس ونطاق واحد. لقد قيمت ثلاثة أحماض قوية كتبادل للكاتيونات وقد قورن مدى استيعابها لإزالة الفلزات. تركيز الفلزات في النفايات السائلة قل مع كل أنواع الراتنج المستخدم. وقد وجد من بين الثلاث أنواع الزيوليت الطبيعي. ووجد ان الاستيلبيت له أعلى مقدرة على إزالة النحاس في كل مرة اخذ فيها الاعتبار لتقيم مدى مقدرة الراتنج.

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Authors and Affiliations

  1. Department of Chemical Engineering, Pravara Rural Engineering College, Loni, Ahmednagar Dist., Maharashtra, 413736, India

    Ravindra W. Gaikwad, S. A. Misal &  Dhirendra

  2. University School of Chemical Technology, GGS Indraprastha University, Kashmere Gate, New Delhi, 110006, India

    D. V. Gupta

Authors
  1. Ravindra W. Gaikwad
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  2. S. A. Misal
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  3. Dhirendra
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  4. D. V. Gupta
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Correspondence to Ravindra W. Gaikwad.

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Gaikwad, R.W., Misal, S.A., Dhirendra et al. Removal of metal from acid mine drainage (AMD) by using natural zeolite of Nizarneshwar Hills of Western India. Arab J Geosci 4, 85–89 (2011). https://doi.org/10.1007/s12517-009-0079-4

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  • DOI: https://doi.org/10.1007/s12517-009-0079-4

Keywords

  • Natural zeolites
  • Synthetic resins
  • Heavy metal
  • Copper (II)
  • Adsorption
  • Retention