From Río Tinto to Mars

Amils, Ricardo; González-Toril, Elena; Aguilera, Ángeles; Rodríguez, Núria; Fernández-Remolar, David C.; Gómez, Felipe; García-Moyano, Antonio; Malki, M.; Oggerin, Monike; Sánchez‐Andrea, Irene; Sanz, J. L.

doi:10.1016/b978-0-12-387044-5.00002-9

Cited by 29 publications

(14 citation statements)

References 90 publications

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“…The process is highly enhanced by microbial activity and some microorganisms known as extremophiles can in fact naturally convert a water body into a heavily contaminated site, as in the case of some rivers located close to Fe mining activities (Amils et al, 2011). This process involves three steps until complete mobilization of metals.…”

Section: Resource Recovery For a Circular Economymentioning

confidence: 99%

Resource Recovery from Wastewater by Biological Technologies: Opportunities, Challenges, and Prospects

et al. 2017

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Limits in resource availability are driving a change in current societal production systems, changing the focus from residues treatment, such as wastewater treatment, toward resource recovery. Biotechnological processes offer an economic and versatile way to concentrate and transform resources from waste/wastewater into valuable products, which is a prerequisite for the technological development of a cradle-to-cradle bio-based economy. This review identifies emerging technologies that enable resource recovery across the wastewater treatment cycle. As such, bioenergy in the form of biohydrogen (by photo and dark fermentation processes) and biogas (during anaerobic digestion processes) have been classic targets, whereby, direct transformation of lipidic biomass into biodiesel also gained attention. This concept is similar to previous biofuel concepts, but more sustainable, as third generation biofuels and other resources can be produced from waste biomass. The production of high value biopolymers (e.g., for bioplastics manufacturing) from organic acids, hydrogen, and methane is another option for carbon recovery. The recovery of carbon and nutrients can be achieved by organic fertilizer production, or single cell protein generation (depending on the source) which may be utilized as feed, feed additives, next generation fertilizers, or even as probiotics. Additionlly, chemical oxidation-reduction and bioelectrochemical systems can recover inorganics or synthesize organic products beyond the natural microbial metabolism. Anticipating the next generation of wastewater treatment plants driven by biological recovery technologies, this review is focused on the generation and re-synthesis of energetic resources and key resources to be recycled as raw materials in a cradle-to-cradle economy concept.

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Section: Resource Recovery For a Circular Economymentioning

confidence: 99%

Resource Recovery from Wastewater by Biological Technologies: Opportunities, Challenges, and Prospects

et al. 2017

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“…First models for iron and sulfur cycling were proposed for the Tinto River (Gonzalez-Toril et al, 2003 ; Rowe et al, 2007 ; Amils et al, 2011 ) (Figure 3 ). In one such model, microbes thriving in the sediments/water column of the Tinto River perform the oxidation of Fe(II) to Fe(III) and recovery of Fe(II) through Fe(III) reduction.…”

Section: Metabolism and Element Conversion In Amd Systems At The Omentioning

confidence: 99%

Microbial diversity and metabolic networks in acid mine drainage habitats

et al. 2015

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Acid mine drainage (AMD) emplacements are low-complexity natural systems. Low-pH conditions appear to be the main factor underlying the limited diversity of the microbial populations thriving in these environments, although temperature, ionic composition, total organic carbon, and dissolved oxygen are also considered to significantly influence their microbial life. This natural reduction in diversity driven by extreme conditions was reflected in several studies on the microbial populations inhabiting the various micro-environments present in such ecosystems. Early studies based on the physiology of the autochthonous microbiota and the growing success of omics-based methodologies have enabled a better understanding of microbial ecology and function in low-pH mine outflows; however, complementary omics-derived data should be included to completely describe their microbial ecology. Furthermore, recent updates on the distribution of eukaryotes and archaea recovered through sterile filtering (herein referred to as filterable fraction) in these environments demand their inclusion in the microbial characterization of AMD systems. In this review, we present a complete overview of the bacterial, archaeal (including filterable fraction), and eukaryotic diversity in these ecosystems, and include a thorough depiction of the metabolism and element cycling in AMD habitats. We also review different metabolic network structures at the organismal level, which is necessary to disentangle the role of each member of the AMD communities described thus far.

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“…Research directed at exploring the metabolic capacities of community members has revealed that the chemical species present in oligotrophic AMD systems favour the establishment of a microbial chemolithotropic community (Tyson et al , 2004; Ram et al , 2005; Rowe et al , 2007; Belnap et al , 2010; Amils et al , 2011; Bertin et al , 2011; González-Toril et al , 2011; Johnson, 2012). However, when macroscopic microbial growths develop, the predominant metabolism shifts from chemolithotrophy to heterotrophy (López-Archilla et al , 2004; García-Moyano et al , 2007; Macalady et al , 2007; Ziegler et al , 2009; Johnson, 2012; Jones et al , 2012).…”

Section: Introductionmentioning

confidence: 99%

Microbial stratification in low pH oxic and suboxic macroscopic growths along an acid mine drainage

et al. 2014

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Macroscopic growths at geographically separated acid mine drainages (AMDs) exhibit distinct populations. Yet, local heterogeneities are poorly understood. To gain novel mechanistic insights into this, we used OMICs tools to profile microbial populations coexisting in a single pyrite gallery AMD (pH ∼2) in three distinct compartments: two from a stratified streamer (uppermost oxic and lowermost anoxic sediment-attached strata) and one from a submerged anoxic non-stratified mat biofilm. The communities colonising pyrite and those in the mature formations appear to be populated by the greatest diversity of bacteria and archaea (including ‘ARMAN' (archaeal Richmond Mine acidophilic nano-organisms)-related), as compared with the known AMD, with ∼44.9% unclassified sequences. We propose that the thick polymeric matrix may provide a safety shield against the prevailing extreme condition and also a massive carbon source, enabling non-typical acidophiles to develop more easily. Only 1 of 39 species were shared, suggesting a high metabolic heterogeneity in local microenvironments, defined by the O2 concentration, spatial location and biofilm architecture. The suboxic mats, compositionally most similar to each other, are more diverse and active for S, CO2, CH4, fatty acid and lipopolysaccharide metabolism. The oxic stratum of the streamer, displaying a higher diversity of the so-called ‘ARMAN'-related Euryarchaeota, shows a higher expression level of proteins involved in signal transduction, cell growth and N, H2, Fe, aromatic amino acids, sphingolipid and peptidoglycan metabolism. Our study is the first to highlight profound taxonomic and functional shifts in single AMD formations, as well as new microbial species and the importance of H2 in acidic suboxic macroscopic growths.

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From Río Tinto to Mars

Cited by 29 publications

References 90 publications

Resource Recovery from Wastewater by Biological Technologies: Opportunities, Challenges, and Prospects

Resource Recovery from Wastewater by Biological Technologies: Opportunities, Challenges, and Prospects

Microbial diversity and metabolic networks in acid mine drainage habitats

Microbial stratification in low pH oxic and suboxic macroscopic growths along an acid mine drainage

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