Dynamic Experimental Study on Treatment of Acid Mine Drainage by Bacteria Supported in Natural Minerals
In order to solve the problem of pollution of acid mine drainage (AMD), such as low pH value and being rich in SO<sub>4</sub><sup>2−</sup>, Fe and Mn pollution ions, etc., immobilized particles were prepared by using sugar cane-refining waste (bagasse), a natural co...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-01-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/2/439 |
| _version_ | 1798039029825929216 |
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| author | Yanrong Dong Junzhen Di Xianjun Wang Lindan Xue Zhenhua Yang Xuying Guo Mingwei Li |
| author_facet | Yanrong Dong Junzhen Di Xianjun Wang Lindan Xue Zhenhua Yang Xuying Guo Mingwei Li |
| author_sort | Yanrong Dong |
| collection | DOAJ |
| description | In order to solve the problem of pollution of acid mine drainage (AMD), such as low pH value and being rich in SO<sub>4</sub><sup>2−</sup>, Fe and Mn pollution ions, etc., immobilized particles were prepared by using sugar cane-refining waste (bagasse), a natural composite mineral (called medical stone in China) and sulfate-reducing bacteria (SRB) as substrate materials, based on microbial immobilization technology. Medical stone is a kind of composite mineral with absorbability, non-toxicity and biological activity. The adsorption capacity of medical stone is different according to its geographic origins. Two dynamic columns were constructed with Column 1 filled by Fuxin’s medical stone-enhanced SRB immobilized particles, and Column 2 filled by Dengfeng’s medical stone-enhanced SRB immobilized particles as fillers. The treatment effect on AMD with SRB-immobilized particles enhanced by medical stone from different areas was compared. Results showed that Column 2 had better treatment effect on AMD. The average effluent pH value of Column 2 was 6.98, the average oxidation reduction potential (ORP) value was −70.17 mV, the average removal percentages of SO<sub>4</sub><sup>2−</sup>, Fe<sup>2+</sup> and Mn<sup>2+</sup> were 70.13%, 83.82% and 59.43%, respectively, and the average chemical oxygen demand (COD) emission was 555.48 mg/L. |
| first_indexed | 2024-04-11T21:48:19Z |
| format | Article |
| id | doaj.art-183886aab9ba4e989cac3f7910a0f4d7 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T21:48:19Z |
| publishDate | 2020-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-183886aab9ba4e989cac3f7910a0f4d72022-12-22T04:01:19ZengMDPI AGEnergies1996-10732020-01-0113243910.3390/en13020439en13020439Dynamic Experimental Study on Treatment of Acid Mine Drainage by Bacteria Supported in Natural MineralsYanrong Dong0Junzhen Di1Xianjun Wang2Lindan Xue3Zhenhua Yang4Xuying Guo5Mingwei Li6College of Civil Engineering, Liaoning Technical University, Fuxin 123000, Liaoning, ChinaCollege of Civil Engineering, Liaoning Technical University, Fuxin 123000, Liaoning, ChinaCollege of Civil Engineering, Liaoning Technical University, Fuxin 123000, Liaoning, ChinaCollege of Civil Engineering, Liaoning Technical University, Fuxin 123000, Liaoning, ChinaCollege of Mining, Liaoning Technical University, Fuxin 123000, Liaoning, ChinaCollege of Science, Liaoning Technical University, Fuxin 123000, Liaoning, ChinaCollege of Civil Engineering, Liaoning Technical University, Fuxin 123000, Liaoning, ChinaIn order to solve the problem of pollution of acid mine drainage (AMD), such as low pH value and being rich in SO<sub>4</sub><sup>2−</sup>, Fe and Mn pollution ions, etc., immobilized particles were prepared by using sugar cane-refining waste (bagasse), a natural composite mineral (called medical stone in China) and sulfate-reducing bacteria (SRB) as substrate materials, based on microbial immobilization technology. Medical stone is a kind of composite mineral with absorbability, non-toxicity and biological activity. The adsorption capacity of medical stone is different according to its geographic origins. Two dynamic columns were constructed with Column 1 filled by Fuxin’s medical stone-enhanced SRB immobilized particles, and Column 2 filled by Dengfeng’s medical stone-enhanced SRB immobilized particles as fillers. The treatment effect on AMD with SRB-immobilized particles enhanced by medical stone from different areas was compared. Results showed that Column 2 had better treatment effect on AMD. The average effluent pH value of Column 2 was 6.98, the average oxidation reduction potential (ORP) value was −70.17 mV, the average removal percentages of SO<sub>4</sub><sup>2−</sup>, Fe<sup>2+</sup> and Mn<sup>2+</sup> were 70.13%, 83.82% and 59.43%, respectively, and the average chemical oxygen demand (COD) emission was 555.48 mg/L.https://www.mdpi.com/1996-1073/13/2/439acid mine drainagemedical stonebagassesulfate-reducing bacteriaimmobilized particle |
| spellingShingle | Yanrong Dong Junzhen Di Xianjun Wang Lindan Xue Zhenhua Yang Xuying Guo Mingwei Li Dynamic Experimental Study on Treatment of Acid Mine Drainage by Bacteria Supported in Natural Minerals Energies acid mine drainage medical stone bagasse sulfate-reducing bacteria immobilized particle |
| title | Dynamic Experimental Study on Treatment of Acid Mine Drainage by Bacteria Supported in Natural Minerals |
| title_full | Dynamic Experimental Study on Treatment of Acid Mine Drainage by Bacteria Supported in Natural Minerals |
| title_fullStr | Dynamic Experimental Study on Treatment of Acid Mine Drainage by Bacteria Supported in Natural Minerals |
| title_full_unstemmed | Dynamic Experimental Study on Treatment of Acid Mine Drainage by Bacteria Supported in Natural Minerals |
| title_short | Dynamic Experimental Study on Treatment of Acid Mine Drainage by Bacteria Supported in Natural Minerals |
| title_sort | dynamic experimental study on treatment of acid mine drainage by bacteria supported in natural minerals |
| topic | acid mine drainage medical stone bagasse sulfate-reducing bacteria immobilized particle |
| url | https://www.mdpi.com/1996-1073/13/2/439 |
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