تمیز کردن چهار فلز سنگین از خاکستر بادی
ترجمه نشده

تمیز کردن چهار فلز سنگین از خاکستر بادی

عنوان فارسی مقاله: بازیابی بسیار کارآمد و تمیز کردن چهار فلز سنگین از خاکستر بادی سوزاندن زباله جامد شهری (MSWI) توسط ادغام آبشویی ، استخراج انتخابی و جذب
عنوان انگلیسی مقاله: Highly efficient recovery and clean-up of four heavy metals from MSWI fly ash by integrating leaching, selective extraction and adsorption
مجله/کنفرانس: مجله تولید پاک – Journal of Cleaner Production
رشته های تحصیلی مرتبط: شیمی، محیط زیست
گرایش های تحصیلی مرتبط: شیمی محیط زیست، بازیافت و مدیریت پسماند
کلمات کلیدی فارسی: خاکستر بادی سوزاندن زباله جامد شهری، بازیابی فلز، سم زدایی، مس و روی، کادمیم و سرب، هیدرومتالورژی
کلمات کلیدی انگلیسی: MSWI fly ash، Metal recovery، Detoxification، Copper/zinc، Cadmium/lead، Hydrometallurgy
نوع نگارش مقاله: مقاله پژوهشی (Research Article)
نمایه: Scopus – Master Journals List – JCR
شناسه دیجیتال (DOI): https://doi.org/10.1016/j.jclepro.2019.06.198
دانشگاه: Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou University, Guangzhou, 510006, China
ناشر: الزویر - Elsevier
نوع ارائه مقاله: ژورنال
نوع مقاله: ISI
سال انتشار مقاله: 2019
ایمپکت فاکتور: 7.096 در سال 2018
شاخص H_index: 150 در سال 2019
شاخص SJR: 1.620 در سال 2018
شناسه ISSN: 0959-6526
شاخص Quartile (چارک): Q1 در سال 2018
فرمت مقاله انگلیسی: PDF
تعداد صفحات مقاله انگلیسی: 11
وضعیت ترجمه: ترجمه نشده است
قیمت مقاله انگلیسی: رایگان
آیا این مقاله بیس است: بله
آیا این مقاله مدل مفهومی دارد: دارد
آیا این مقاله پرسشنامه دارد: ندارد
آیا این مقاله متغیر دارد: ندارد
کد محصول: E12810
رفرنس: دارای رفرنس در داخل متن و انتهای مقاله
فهرست انگلیسی مطالب

Abstract


Graphical abstract


1. Introduction


2. Experimental


3. Results and discussion


4. Conclusions


Acknowledgements


Appendix A. Supplementary data


References

نمونه متن انگلیسی مقاله

Abstract


Municipal solid waste incineration (MSWI) fly ash contains significant amounts of heavy metals (e.g., Cd, Cu, Pb and Zn) and is therefore considered to be a hazardous waste requiring proper treatment prior to its disposal. In this work, an integrated hydrometallurgical process for treatment of MSWI fly ash was evaluated. Valuable metals, e.g. Cu and Zn, were first recovered by combining leaching and extraction sequentially. In the next step, the t removal of Cd and Pb from the remaining leachate using four types of iron-based adsorbents was evaluated. The leaching was optimized with respect to pH, leaching time and liquid to solid ratio. A test done under optimal conditions gave metal releases of 100% and 80% for Cu and Zn as well as 100% and 85% for Cd and Pb, respectively. The resulting leachate was contacted with organic phases based on kerosene containing the extractants LIX860NeI for Cu extraction and Cyanex 572 for Zn extraction in two consecutive steps. Efficient extractions were achieved, thus demonstrating that the combination of leaching and extraction can be successfully used for the recovery of Cu and Zn. Adsorption of heavy metal ions on various iron based sorbents to detoxify the aqueous effluent from the extraction showed good removal efficiency (more than 95%) for both Cd and Pb. The results of this study show that the proposed integrated process is a promising tool that can be used in the strategy for metal recovery and detoxification of MSWI fly ash.


Introduction


Over the past few decades, incineration has become a widely prevalent alternative for municipal solid waste management all over the world (Song et al., 2017), due to the energy recovery and reduction in the volume and mass of waste (Narayana, 2009). However the MSWI process produces a considerable amount of fly ash which is commonly rich in leachable heavy metals, thus posing a serious threat to the environment and human health. Fly ashes have been classified as a hazardous waste (MEE, 2016), which must be treated properly to prevent environmental pollution (GarciaLodeiro et al., 2016). China is one of the largest municipal solid waste producing countries in the world. It is reported that the MSW generated was approximately 170 Mt in 2016, with an annual increase of 8e10% (Xin-gang et al., 2016). Meanwhile, for the aim of proper treatment, the proportion of incineration in the waste disposal (waste to energy) will be increased from 31% in 2015 to 54% in 2020 in China according to the “۱۳th Five-Year” National Municipal Solid Waste Disposal Facilities Construction Plan. The amount of municipal solid waste incineration fly ash generated will increase rapidly as a consequence. However, only a few landfill sites designed for the disposal of hazardous waste like MSWI fly ash in China are now in service (Cheng and Hu, 2010) while the construction of new sites lags behind the construction of incineration plants. Therefore, it is urgent to drive the processing options available due to the huge capacity gap.

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