Experimental study on the treatment of acid mine drainage by modified corncob fixed SRB sludge particles

Dong, Yanrong; Di, Junzhen; Wang, Mingxin; Ren, Yadong

doi:10.1039/c9ra01565e

Cited by 17 publications

(10 citation statements)

References 35 publications

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“…According to the enrichment and culture method of SRB, the seed mud was inoculated into the sterilized Starkey medium for anaerobic culture [25]. When H 2 S and black precipitate appear, SRB is cultured [26]. Then the SRB with strong activity was enriched.…”

Section: Of 21mentioning

confidence: 99%

Study on the Effectiveness of Sulfate-Reducing Bacteria Combined with Coal Gangue in Repairing Acid Mine Drainage Containing Fe and Mn

Dong

Yang

et al. 2020

Energies

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In view of the characteristics of the high content of SO42−, Fe2+ and Mn2+ in acid mine drainage (AMD) and low pH value, based on adsorption and biological methods, coal gangue was combined with sulfate-reducing bacteria (SRB). On this basis, four dynamic columns, including Column 1 (SRB combined with spontaneous combustion gangue from the Gaode coal mine), Column 2 (SRB combined with spontaneous combustion gangue from Haizhou), Column 3 (SRB combined with gangue from Haizhou), and Column 4 (SRB combined with gangue from Shanxi), were constructed. The efficacy of four columns was compared by the inflow of AMD with different pollution load. Results showed that the repair effect of four columns was: Column 3 > Column 2 > Column 1 > Column 4. In the second stage of the experiment, the repair effect of Column 3 was the best. The average effluent pH value and oxidation reduction potential (ORP) value were 9.09 and –262.83 mV, the highest removal percentages of chemical oxygen demand (COD) and SO42− were 84.41% and 72.73%, and the average removal percentages of Fe2+, Mn2+ were 98.70% and 79.97%, respectively. At the end of the experiment, when deionized water was injected, the fixed effect of AMD in the four columns was stable and no secondary release appeared.

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Section: Of 21mentioning

confidence: 99%

Study on the Effectiveness of Sulfate-Reducing Bacteria Combined with Coal Gangue in Repairing Acid Mine Drainage Containing Fe and Mn

Dong

Yang

et al. 2020

Energies

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“…However, the growth of these bacteria requires simple carbon and nutrients that can be obtained from compost that is rich with organic matter. The compost becomes the carbon sources for triggering sulfate-reducing bacteria to reduce sulfate producing sulfide and bicarbonate that affects the rise in pH (Dong et al, 2019). When only using sediment in the treatment, the sulfatereducing bacteria do not get the energy of the oxidation of organic compounds as an electron donor to generate hydrogen sulfide under anaerobic conditions (Hu et al, 2018).…”

Section: Sulfate Concentrationmentioning

confidence: 99%

“…The results of this study were more successful in reducing sulfate of acid mine water using the estuary sediment as a source of sulfate-reducing bacteria inoculums with the addition of compost as source of nutrients, when compared to previous studies. Dong et al (2019) recently reported that the removal percentages of sulfate in a column were 52.94%, and the effluent pH value was 6.56 with treatment of acid mine water by modified corncob fixed SRB sludge particles in the column test models. Yim et al (2015) reported that passive treatment systems utilizing mushroom compost indicated a sulfate treatment efficiency of 63% within 120 days with a neutral pH value.…”

Section: Number Of Sulfate-reducing Bacteriamentioning

confidence: 99%

Estuary Sediment Treatment for Reducing Sulfate in Acid Mine Water

Fahruddin

Abdullah

Nurhaedar

et al. 2020

Environ. Nat. Resour. J.

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Acid mine water causes environmental problems due to its high acidity caused by its high sulfate content which can disturb the life of organisms. This problem can be resolved by utilizing sulfate-reducing bacteria (SRB) abundantly found in sediments. The purpose of this research is to study the use of estuary sediments as a source of SRB inoculums to reduce sulfate in acid mine water. The bioremediation treatment of acid mine water is carried out in a column bioreactor, with treatment T1 comprising of sediment and compost, and then comparing it to treatments T2 of sediment, T3 of compost, and T4 as the control treatment of only acid mine water. Results show that treatment T1 was able to reduce sulfate concentrations by 78%, compared to T2 by 56%, T3 by 21% and T4 by 5%. The reduction of sulfate was followed by increases in pH where T1 reached a pH value of 7.1, compared to treatments T2 and T3 which had pH values less than 5.5, whereas treatment T4 had a pH of 2.2. The reduced sulfate and increased pH was also followed by an increase of SRB growth, especially in T1. Estuary sediments as a source of SRB inoculums can be used in the bioremediation of acid mine water by adding compost to maximize the process of sulfate reduction and pH increase.Citation: Fahruddin F, Abdullah A, Nurhaedar, Nafie NL. Estuary sediment treatment for reducing sulfate in acid mine water. Environ. Nat.Resour.

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“…The study found that heavy metals in acid mine water can be removed by adsorption, ion exchange, reverse osmosis and other methods, but there are some disadvantages such as saturation of adsorption, susceptible to external factors, and high maintenance costs [6,7]. In recent years, microbial methods represented by sulfate-reducing bacteria (SRB) have been considered as a promising alternative to traditional methods due to their high treatment efficiency, low operating cost and strong reproducibility [8,9]. However, SRB growth is inhibited by low pH and high concentration of metal ions [10], and continuous carbon source addition and other issues have limited the large-scale application of microbial method.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Experimental Study on Treatment of Acid Mine Drainage by Bacteria Supported in Natural Minerals

Dong

Wang

et al. 2020

Energies

Self Cite

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In order to solve the problem of pollution of acid mine drainage (AMD), such as low pH value and being rich in SO42−, 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 SO42−, Fe2+ and Mn2+ were 70.13%, 83.82% and 59.43%, respectively, and the average chemical oxygen demand (COD) emission was 555.48 mg/L.

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Experimental study on the treatment of acid mine drainage by modified corncob fixed SRB sludge particles

Abstract: A cost-effective system for acid mine drainage removal was developed with the key role of alkaline H2O2 modified corncob and sulfate reducing bacteria.

Cited by 17 publications

References 35 publications

Study on the Effectiveness of Sulfate-Reducing Bacteria Combined with Coal Gangue in Repairing Acid Mine Drainage Containing Fe and Mn

Study on the Effectiveness of Sulfate-Reducing Bacteria Combined with Coal Gangue in Repairing Acid Mine Drainage Containing Fe and Mn

Estuary Sediment Treatment for Reducing Sulfate in Acid Mine Water

Dynamic Experimental Study on Treatment of Acid Mine Drainage by Bacteria Supported in Natural Minerals

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