Long term carbon sequestration potential of biosolids-amended copper and molybdenum mine tailings following mine site reclamation

Antonelli, Paul M.; Fraser, Lauchlan H.; Gardner, Wendy C.; Broersma, Klaas; Karakatsoulis, J.; Phillips, Michelle E.

doi:10.1016/j.ecoleng.2018.04.001

Cited by 47 publications

(25 citation statements)

References 57 publications

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“…Previous studies have confirmed the existence of Sulfobacillus in mine tailings (Coral et al, 2018;Yu et al, 2018), and members of this genus have the ability to oxidize or reduce Fe(III) and oxidize sulfur (Dold et al, 2005). This ability is important because by adhering to mineral surfaces and further enhancing sulfide mineral oxidation, Sulfobacillus likely leads to a high mineral dissolution rate (Becker et al, 2011;Li et al, 2016). Although none of the cbbL or cbbM genes identified in our study were highly homologous to genes in Leptospirillum, Marín et al (2017) reported that rTCA carbon fixation pathway genes were mainly found in Leptospirillum spp.…”

Section: The Effect Of Fes 2 On Bacterial Carbon Sequestration In Minmentioning

confidence: 89%

“…4), indicating high consistency of dominant autotrophic bacterial genera in different mine tailings. It is possible that acidophilic and/or autotrophic bacteria might be stimulated under conditions of pyrite oxidization and the availability of organic carbon (Deng et al, 2016;Antonelli et al, 2018); moreover, the main carbon fixers in these two mine tailings may be derived from the same groups. In addition, levels of major ferrous and sulfur-oxidizing genera, autotrophic Leptospirillum and Acidiphilium in YM_ FeS 2 and autotrophic Thiobacillus in SM_FeS 2 , were enhanced, suggesting the synchronization of pyrite oxidization and carbon sequestration in mine tailings.…”

Section: The Effect Of Fes 2 On the Entire Bacterial Community In Minmentioning

confidence: 99%

“…Soil ecosystems have great potential as carbon sinks to stabilize CO 2 and regulate climate change (White et al, 2000). Atmospheric CO 2 can be fixed in plants via photosynthesis and assimilated into soils via decomposition and microbial activity (Deng et al, 2016;Antonelli et al, 2018), and autotrophic bacteria play a significant role in carbon sequestration in soil ecosystems (Berg, 2011;Alfreider et al, 2017). Six autotrophic carbon sequestration mechanisms are widespread, including the Calvin-Benson-Bassham (CBB) cycle, the reductive tricarboxylic acid (rTCA) cycle, the reductive acetyl-CoA pathway, and the recently discovered 3-hydroxypropionate-4-hydroxybutyrate (HP-HB) cycles (Berg, 2011;Alfreider et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Pyrite oxidization accelerates bacterial carbon sequestration in copper mine tailings

Dong

et al. 2019

Biogeosciences

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Abstract. Polymetallic mine tailings have great potential as carbon sequestration tools to stabilize atmospheric CO2 concentrations. However, previous studies focused on carbonate mineral precipitation, whereas the role of autotrophic bacteria in mine tailing carbon sequestration has been neglected. In this study, carbon sequestration in two samples of mine tailings treated with FeS2 was evaluated using 13C isotope, pyrosequencing and DNA-based stable isotope probing (SIP) analyses to identify carbon fixers. Mine tailings treated with FeS2 exhibited a higher percentage of 13C atoms (1.76±0.06 % for Yangshanchong and 1.36±0.01 % for Shuimuchong) than did controls over a 14-day incubation, which emphasized the role of autotrophs in carbon sequestration with pyrite addition. Pyrite treatment also led to changes in the composition of bacterial communities, and several autotrophic bacteria increased, including Acidithiobacillus and Sulfobacillus. Furthermore, pyrite addition increased the relative abundance of the dominant genus Sulfobacillus by 8.86 % and 5.99 % in Yangshanchong and Shuimuchong samples, respectively. Furthermore, DNA SIP results indicated a 8.20–16.50 times greater gene copy number for cbbL than cbbM in 13C-labeled heavy fractions, and a Sulfobacillus-like cbbL gene sequence (cbbL-OTU1) accounted for 30.11 %–34.74 % of all cbbL gene sequences in 13C-labeled heavy fractions of mine tailings treated with FeS2. These findings highlight the importance of the cbbL gene in bacterial carbon sequestration and demonstrate the ability of chemoautotrophs to sequester carbon during sulfide mineral oxidation in mine tailings. This study is the first to investigate carbon sequestration by autotrophic bacteria in mine tailings through the use of isotope tracers and DNA SIP.

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Section: The Effect Of Fes 2 On Bacterial Carbon Sequestration In Minmentioning

confidence: 89%

Section: The Effect Of Fes 2 On the Entire Bacterial Community In Minmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Pyrite oxidization accelerates bacterial carbon sequestration in copper mine tailings

Dong

et al. 2019

Biogeosciences

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“…Although reclamation activities reduce soil carbon loss to some extent, they are time-consuming and challenging. A range of reclamation practices such as topsoil application, selective plantation, use of chemical fertilizer, microbial agents, biochar, industrial or domestic waste, and sewage sludge has been reported to enhance soil carbon pool [18,19]. Out of these, afforestation/reforestation is widely used to restore mine land, but the selection of appropriate tree species is essential.…”

Section: Introductionmentioning

confidence: 99%

Effect of Fast-Growing Trees on Soil Properties and Carbon Storage in an Afforested Coal Mine Land (India)

2020

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Surface coal mining activities have numerous consequences on terrestrial ecosystems. Loss of soil and biomass carbon pool due to mining activities is a serious concern in the rapidly changing environment. We investigated the effect of fast-growing trees (Albizia lebbeck, Albizia procera, and Dalbergia sissoo) on soil fertility and ecosystem carbon pool after eight years of afforestation in the post-mining land of Jharia coalfield, India, and compared with the adjacent natural forest site. Significant differences in soil organic carbon (SOC) and total nitrogen (TN) stocks in afforested mine soil and natural forest soils were observed. Greater SOC stock was found under D. sissoo (30.17 Mg·C·ha−1) while total N stock was highest under A. lebbeck (4.16 Mg·N·ha−1) plantation. Plant biomass accumulated 85% of the natural forest carbon pool after eight years of afforestation. The study concluded that planting fast-growing trees in post-mining lands could produce a promising effect on mine soil fertility and greater carbon storage in a short period.

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“…Some, including parts of the Big Marsh Park, have been sites for active ecological remediation and have been transformed into vibrant urban parks [8], while others such as U.S. Steel South Works have remained relatively untouched for decades [9]. Common methods to prepare sites in the region for ecosystem construction include phytoremediation or capping with organic material [7, 10]. Nevertheless, it has been observed that because of their mobility, contaminants in slag affect plant growth even with addition of compost, and experiments with different plants used for phytoremediation resulted in low survival [6, 7].…”

Section: Introductionmentioning

confidence: 99%

Early succession on slag compared to urban soil: A slower recovery

2019

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Slag, waste from the steel-making process, contains large amounts of calcium, magnesium, iron and other heavy metals. Because of its composition, high pH and low water retention ability, slag is considered inhospitable to plants. Nevertheless, the spontaneously generated plant communities on slag are surprisingly diverse, but the assembly and structure of such communities are poorly studied. Previous studies suggest reduced rates of succession due to low growth rate and slow accumulation of topsoil. To investigate whether slag communities display similar patterns, we used two former industrial sites on the South Side of Chicago, IL, both with high pH (8–9.2) sand content (80%) and calcium concentration (> 9000 ppm). We removed all vegetation from both slag and non-slag plots to test whether recovery differed over one growing season (4 months). To directly assess plant growth, selected focal species were planted on both sites and harvested. We show that recovery from removal differed at slag and non-slag sites: the recruitment process on slag, measured by percent vegetative cover and number of species in plots, was significantly slower at 6–8 weeks of the manipulation and beyond, suggesting a potential stage-dependent effect of slag on plant growth. Certain slag plots recorded less cover than non-slag plots by >30% at maximum difference. Functional trait analysis found that graminoid and early successional species preferentially colonized slag. Overall, slag plots recovered more slowly from disturbance, suggesting a slow succession process that would hinder natural recovery. However, slag also has the potential to serve as plant refugia, hosting flora of analogous habitats native to the area: one of our industrial sites hosts nearly 80% native species with two species of highest Floristic Quality Index (10). Restoration efforts should be informed by the slow process of natural recovery, while post-industrial sites in urban areas serve as potential native plant refugia.

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Long term carbon sequestration potential of biosolids-amended copper and molybdenum mine tailings following mine site reclamation

Cited by 47 publications

References 57 publications

Pyrite oxidization accelerates bacterial carbon sequestration in copper mine tailings

Pyrite oxidization accelerates bacterial carbon sequestration in copper mine tailings

Effect of Fast-Growing Trees on Soil Properties and Carbon Storage in an Afforested Coal Mine Land (India)

Early succession on slag compared to urban soil: A slower recovery

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