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Book: Environmental microbiology

Maier, Raina M. / Pepper, Ian L. / Gerba, Charles P.

2009

Author's details	Rainer M. Maier ; Ian L. Pepper ; Charles P. Gerba
Keywords	Mikrobiologie ; Umweltwissenschaften ; Ökologie ; Mikroorganismus ; Umweltverschmutzung ; Umweltschutz
Subject	Ökologie ; Umweltvorsorge ; Umweltverunreinigung ; Pollution ; Umweltkontamination ; Keim ; Mikrobe ; Mikroben ; Umweltbiologie ; Ecology
Language	English
Size	XXII, 598 S. : Ill., graph. Darst.
Edition	2. ed.
Publisher	Elsevier Acad. Press
Publishing place	Amsterdam u.a.
Publishing country	Netherlands
Document type	Book
HBZ-ID	HT015568418
ISBN	978-0-12-370519-8 ; 0-12-370519-3
Database	Catalogue ZB MED Medicine, Health

In stock of ZB MED Cologne/Königswinter

Shelf mark	Loan status	Location
2008 A 5045	order for loan	Magazin

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Article ; Online: Comparison of synthetic rhamnolipids as chemical precipitants for Pb, La, and Mg.

McCawley, Ida A / Maier, Raina M / Hogan, David E

Journal of hazardous materials

2023 Volume 447, Page(s) 130801

Abstract: Identifying and exploiting cost-effective and green methods of metal recovery from natural and contaminated aqueous systems is widely recognized as necessary to supplement the supply of critical elements, decrease the environmental impacts associated ... ...

Abstract	Identifying and exploiting cost-effective and green methods of metal recovery from natural and contaminated aqueous systems is widely recognized as necessary to supplement the supply of critical elements, decrease the environmental impacts associated with hardrock mining, and remediate metal-contaminated waters. This research examines a novel approach based on rhamnolipid-facilitated chemical precipitation of metals. Three techniques were assessed to remove the rhamnolipid:metal complex from solution: mixing only, and mixing following by filtration or centrifugation. Recent advances in the ability to synthetically produce rhamnolipid surfactants allowed investigation of a variety of rhamnolipid structures. Rhamnolipids differing in the length and number of hydrophobic tails were assessed to remove Pb, La, and Mg from single metal solutions. In general, removal increased with increased rhamnolipid hydrophobicity and with the addition of an active removal step (filtration or centrifugation). Filtration removed up to 96% of all metals while centrifugation removed up to 97% for Pb and La and 60% for Mg. Results suggest tailoring the rhamnolipid structure and removal methods may enable selective metal removal to achieve specific outcomes. Future studies in mixed-metal and real-world solutions will be needed to confirm the viability of these techniques in complex systems.
MeSH term(s)	Lead ; Glycolipids/chemistry ; Surface-Active Agents/chemistry
Chemical Substances	rhamnolipid ; Lead (2P299V784P) ; Glycolipids ; Surface-Active Agents
Language	English
Publishing date	2023-01-16
Publishing country	Netherlands
Document type	Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
ZDB-ID	1491302-1
ISSN	1873-3336 ; 0304-3894
ISSN (online)	1873-3336
ISSN	0304-3894
DOI	10.1016/j.jhazmat.2023.130801
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Comparison of synthetic rhamnolipids as chemical precipitants for Pb, La, and Mg

McCawley, Ida A. / Maier, Raina M. / Hogan, David E.

Journal of Hazardous Materials. 2023 Apr., v. 447, p. 130801

2023 , Page(s) 130801

Abstract	Identifying and exploiting cost-effective and green methods of metal recovery from natural and contaminated aqueous systems is widely recognized as necessary to supplement the supply of critical elements, decrease the environmental impacts associated with hardrock mining, and remediate metal-contaminated waters. This research examines a novel approach based on rhamnolipid-facilitated chemical precipitation of metals. Three techniques were assessed to remove the rhamnolipid:metal complex from solution: mixing only, and mixing following by filtration or centrifugation. Recent advances in the ability to synthetically produce rhamnolipid surfactants allowed investigation of a variety of rhamnolipid structures. Rhamnolipids differing in the length and number of hydrophobic tails were assessed to remove Pb, La, and Mg from single metal solutions. In general, removal increased with increased rhamnolipid hydrophobicity and with the addition of an active removal step (filtration or centrifugation). Filtration removed up to 96% of all metals while centrifugation removed up to 97% for Pb and La and 60% for Mg. Results suggest tailoring the rhamnolipid structure and removal methods may enable selective metal removal to achieve specific outcomes. Future studies in mixed-metal and real-world solutions will be needed to confirm the viability of these techniques in complex systems.
Keywords	centrifugation ; chemical precipitation ; cost effectiveness ; filtration ; hydrophobicity ; rhamnolipids ; viability ; Rhamnolipid ; Glycolipid ; Remediation ; Water treatment ; Metals
Language	English
Dates of publication	2023-04
Size	p. 130801
Publishing place	Elsevier B.V.
Document type	Article ; Online
ZDB-ID	1491302-1
ISSN	1873-3336 ; 0304-3894
ISSN (online)	1873-3336
ISSN	0304-3894
DOI	10.1016/j.jhazmat.2023.130801
Database	NAL-Catalogue (AGRICOLA)

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Article: Metal Lability and Mass Transfer Response to Direct-Planting Phytostabilization of Pyritic Mine Tailings.

Hammond, Corin M / Root, Robert A / Maier, Raina M / Chorover, Jon

Minerals (Basel, Switzerland)

2022 Volume 12, Issue 6

Abstract: Understanding the temporal effects of organic matter input and water influx on metal lability and translocation is critical to evaluate the success of the phytostabilization of metalliferous mine tailings. Trends of metal lability, e.g., V, Cr, Mn, Co, ... ...

Abstract	Understanding the temporal effects of organic matter input and water influx on metal lability and translocation is critical to evaluate the success of the phytostabilization of metalliferous mine tailings. Trends of metal lability, e.g., V, Cr, Mn, Co, Ni, Cu, Zn, and Pb, were investigated for three years following a direct-planting phytostabilization trial at a Superfund mine tailings site in semi-arid central Arizona, USA. Unamended tailings were characterized by high concentrations (mmol kg
Language	English
Publishing date	2022-06-15
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2655947-X
ISSN	2075-163X
ISSN	2075-163X
DOI	10.3390/min12060757
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Removal of uranium from contaminated groundwater using monorhamnolipids and ion flotation

Hogan, David E. / Stolley, Ryan M. / Boxley, Chett / Amistadi, Mary Kay / Maier, Raina M.

Journal of environmental management. 2022 Jan. 01, v. 301

2022

Abstract: Mining of uranium for defense-related purposes has left a substantial legacy of pollution that threatens human and environmental health. Contaminated waters in the arid southwest are of particular concern, as water resource demand and water scarcity ... ...

Abstract	Mining of uranium for defense-related purposes has left a substantial legacy of pollution that threatens human and environmental health. Contaminated waters in the arid southwest are of particular concern, as water resource demand and water scarcity issues become more pronounced. The development of remediation strategies to treat uranium impacted waters will become increasingly vital to meet future water needs. Ion flotation is one technology with the potential to address legacy uranium contamination. The green biosurfactant rhamnolipid has been shown to bind uranium and act as an effective collector in ion flotation. In this study, uranium contaminated groundwater (∼440 μg L⁻¹ U) from the Monument Valley processing site in northeast Arizona was used as a model solution to test the uranium removal efficacy of ion flotation with biosynthetic (bio-mRL) and three synthetic monorhamnolipids with varying hydrophobic chain lengths: Rha-C10-C10, Rha-C12-C12, and Rha-C14-C14. At the groundwater's native pH 8, and at an adjusted pH 7, no uranium was removed from solution by any collector. However, at pH 6.5 bio-mRL and Rha-C10-C10 removed 239.2 μg L⁻¹ and 242.4 μg L⁻¹ of uranium, respectively. By further decreasing the pH to 5.5, bio-mRL was able to reduce the uranium concentration to near or below the Environmental Protection Agency maximum contaminant level of 30 μg L⁻¹. For the Rha-C12-C12 and Rha-C14-C14 collector ligands, decreasing the pH to 7 or below reduced the foam stability and quantity, such that these collectors were not suitable for treating this groundwater. To contextualize the results, a geochemical analysis of the groundwater was conducted, and a consideration of uranium speciation is described. Based on this study, the efficacy of monorhamnolipid-based ion flotation in real world groundwater has been demonstrated with suitable solution conditions and collectors identified.
Keywords	biosurfactants ; biosynthesis ; environmental health ; foams ; groundwater ; groundwater contamination ; humans ; hydrophobicity ; ligands ; maximum contaminant level ; monuments ; pH ; remediation ; rhamnolipids ; uranium ; water shortages ; Arizona
Language	English
Dates of publication	2022-0101
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	184882-3
ISSN	1095-8630 ; 0301-4797
ISSN (online)	1095-8630
ISSN	0301-4797
DOI	10.1016/j.jenvman.2021.113835
Database	NAL-Catalogue (AGRICOLA)

In stock of ZB MED Bonn / Germany

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Article: Soil microbial community and abiotic soil properties influence Zn and Cd hyperaccumulation differently in Arabidopsis halleri

Kushwaha, Priyanka / Neilson, Julia W. / Maier, Raina M. / Babst-Kostecka, Alicja

Science of the total environment. 2022 Jan. 10, v. 803

2022

Abstract: Soil contamination with trace metal(loid) elements (TME) is a global concern. This has focused interest on TME-tolerant plants, some of which can hyperaccumulate extraordinary amounts of TME into above-ground tissues, for potential treatment of these ... ...

Abstract	Soil contamination with trace metal(loid) elements (TME) is a global concern. This has focused interest on TME-tolerant plants, some of which can hyperaccumulate extraordinary amounts of TME into above-ground tissues, for potential treatment of these soils. However, intra-species variability in TME hyperaccumulation is not yet sufficiently understood to fully harness this potential. Particularly, little is known about the rhizosphere microbial communities associated with hyperaccumulating plants and whether or not they facilitate TME uptake. The aim of this study is to characterize the diversity and structure of Arabidopsis halleri rhizosphere-influenced and background (i.e., non-Arabidopsis) soil microbial communities in four plant populations with contrasting Zn and Cd hyperaccumulation traits, two each from contaminated and uncontaminated sites. Microbial community properties were assessed along with geographic location, climate, abiotic soil properties, and plant parameters to explain variation in Zn and Cd hyperaccumulation. Site type (TME-contaminated vs. uncontaminated) and location explained 44% of bacterial/archaeal and 28% of fungal community variability. A linear discriminant effect size (LEfSe) analysis identified a greater number of taxa defining rhizosphere microbial communities than associated background soils. Further, in TME-contaminated soils, the number of rhizosphere-defining taxa was 6-fold greater than in the background soils. In contrast, the corresponding ratio for uncontaminated sites, was 3 and 1.6 for bacteria/archaea and fungi, respectively. The variables analyzed explained 71% and 76% of the variance in Zn and Cd hyperaccumulation, respectively; however, each hyperaccumulation pattern was associated with different variables. A. halleri rhizosphere fungal richness and diversity associated most strongly with Zn hyperaccumulation, whereas soil Cd and Zn bioavailability had the strongest associations with Cd hyperaccumulation. Our results indicate strong associations between A. halleri TME hyperaccumulation and rhizosphere microbial community properties, a finding that needs to be further explored to optimize phytoremediation technology that is based on hyperaccumulation.
Keywords	Arabidopsis halleri ; Archaea ; bioavailability ; climate ; environment ; fungal communities ; fungi ; hyperaccumulators ; phytoremediation ; rhizosphere ; soil microorganisms ; soil pollution ; variance
Language	English
Dates of publication	2022-0110
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2021.150006
Database	NAL-Catalogue (AGRICOLA)

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Z 74/341: Show issues

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Article ; Online: Soil microbial community and abiotic soil properties influence Zn and Cd hyperaccumulation differently in Arabidopsis halleri.

Kushwaha, Priyanka / Neilson, Julia W / Maier, Raina M / Babst-Kostecka, Alicja

The Science of the total environment

2021 Volume 803, Page(s) 150006

Abstract	Soil contamination with trace metal(loid) elements (TME) is a global concern. This has focused interest on TME-tolerant plants, some of which can hyperaccumulate extraordinary amounts of TME into above-ground tissues, for potential treatment of these soils. However, intra-species variability in TME hyperaccumulation is not yet sufficiently understood to fully harness this potential. Particularly, little is known about the rhizosphere microbial communities associated with hyperaccumulating plants and whether or not they facilitate TME uptake. The aim of this study is to characterize the diversity and structure of Arabidopsis halleri rhizosphere-influenced and background (i.e., non-Arabidopsis) soil microbial communities in four plant populations with contrasting Zn and Cd hyperaccumulation traits, two each from contaminated and uncontaminated sites. Microbial community properties were assessed along with geographic location, climate, abiotic soil properties, and plant parameters to explain variation in Zn and Cd hyperaccumulation. Site type (TME-contaminated vs. uncontaminated) and location explained 44% of bacterial/archaeal and 28% of fungal community variability. A linear discriminant effect size (LEfSe) analysis identified a greater number of taxa defining rhizosphere microbial communities than associated background soils. Further, in TME-contaminated soils, the number of rhizosphere-defining taxa was 6-fold greater than in the background soils. In contrast, the corresponding ratio for uncontaminated sites, was 3 and 1.6 for bacteria/archaea and fungi, respectively. The variables analyzed explained 71% and 76% of the variance in Zn and Cd hyperaccumulation, respectively; however, each hyperaccumulation pattern was associated with different variables. A. halleri rhizosphere fungal richness and diversity associated most strongly with Zn hyperaccumulation, whereas soil Cd and Zn bioavailability had the strongest associations with Cd hyperaccumulation. Our results indicate strong associations between A. halleri TME hyperaccumulation and rhizosphere microbial community properties, a finding that needs to be further explored to optimize phytoremediation technology that is based on hyperaccumulation.
MeSH term(s)	Arabidopsis ; Biodegradation, Environmental ; Cadmium ; Microbiota ; Rhizosphere ; Soil ; Soil Microbiology ; Soil Pollutants/analysis ; Zinc
Chemical Substances	Soil ; Soil Pollutants ; Cadmium (00BH33GNGH) ; Zinc (J41CSQ7QDS)
Language	English
Publishing date	2021-08-30
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2021.150006
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Jg. 1995 - 2021: Lesesall (1.OG)
ab Jg. 2022: Lesesaal (EG)

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Article: Arsenic in Drinking Water and Diabetes.

Shakya, Aryatara / Dodson, Matthew / Artiola, Janick F / Ramirez-Andreotta, Monica / Root, Robert A / Ding, Xinxin / Chorover, Jon / Maier, Raina M

Water

2023 Volume 15, Issue 9

Abstract: Arsenic is ubiquitous in soil and water environments and is consistently at the top of the Agency for Toxic Substances Disease Registry (ATSDR) substance priority list. It has been shown to induce toxicity even at low levels of exposure. One of the major ...

Abstract	Arsenic is ubiquitous in soil and water environments and is consistently at the top of the Agency for Toxic Substances Disease Registry (ATSDR) substance priority list. It has been shown to induce toxicity even at low levels of exposure. One of the major routes of exposure to arsenic is through drinking water. This review presents current information related to the distribution of arsenic in the environment, the resultant impacts on human health, especially related to diabetes, which is one of the most prevalent chronic diseases, regulation of arsenic in drinking water, and approaches for treatment of arsenic in drinking water for both public utilities and private wells. Taken together, this information points out the existing challenges to understanding both the complex health impacts of arsenic and to implementing the treatment strategies needed to effectively reduce arsenic exposure at different scales.
Language	English
Publishing date	2023-05-02
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2521238-2
ISSN	2073-4441
ISSN	2073-4441
DOI	10.3390/w15091751
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Progressive belowground soil development associated with sustainable plant establishment during copper mine waste revegetation.

Ossanna, Lia Q R / Serrano, Karen / Jennings, Lydia L / Dillon, Jesse / Maier, Raina M / Neilson, Julia W

Applied soil ecology : a section of Agriculture, Ecosystems & Environment

2023 Volume 186

Abstract: Critical to the environmental sustainability of hard rock mining is the reclamation of disturbed lands following mine closure through revegetation. Improved understanding of associations between above- and belowground processes that characterize ... ...

Abstract	Critical to the environmental sustainability of hard rock mining is the reclamation of disturbed lands following mine closure through revegetation. Improved understanding of associations between above- and belowground processes that characterize successful plant establishment is critical to the implementation of more efficient revegetation strategies for nutrient-poor mine waste materials. The specific objective of this five-year temporal study was to identify progressive biotic and abiotic indicators of primary soil development on mine waste rock (WR) on a slope hydroseeded with native plant species and to quantify comparative effects of plant lifeform on soil development. Aboveground plant diversity and belowground substrate properties were measured annually at 67 m intervals along transects following the slope contour. Seeded WR was compared to unseeded WR and the adjacent native ecosystem. A temporal increase in WR microbial biomass was observed in seeded WR relative to unseeded areas. Microbial community analysis found the unseeded WR to be defined by oligotrophic microbes, whereas targeted grass and shrub root zones samples demonstrated significant increases in specific cellulose and lignin degrading and N-cycling phylotypes. More extensive chemical and biological fertility development was observed in shrub root zones relative to grass. Ten chemical and biological indicators increased significantly in shrub WR relative to unseeded WR, whereas grass WR was only enriched in bacterial 16S rRNA gene copy number/g substrate and bacterial/archaeal and fungal diversity. In addition, the shrub root zone had significantly higher nitrogen-cycling potential than grass root zones or unseeded WR. Thus, both grasses and shrubs improve belowground WR development; however, shrub establishment had greater fertility outcomes. Concurrent belowground fertility development is critical to sustainable plant establishment. Coupled evaluation of above- and belowground metrics provides an improved quantitative assessment of revegetation progress and a valuable tool to guide management decisions.
Language	English
Publishing date	2023-01-31
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	1196758-4
ISSN	0929-1393
ISSN	0929-1393
DOI	10.1016/j.apsoil.2023.104813
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Book: Environmental microbiology

Maier, Raina M. / Pepper, Ian L. / Gerba, Charles P.

2000

Author's details	Raina M. Maier ; Ian L. Pepper ; Charles P. Gerba
Keywords	Mikrobiologie ; Umwelt
Language	English
Size	XIX, 585 S. : Ill., graph. Darst.
Publisher	Acad. Press
Publishing place	San Diego u.a.
Publishing country	United States
Document type	Book
Note	Hier auch später erschienene, unveränderte Nachdrucke
HBZ-ID	HT011258798
ISBN	0-12-497570-4 ; 978-0-12-497570-5
Database	Catalogue ZB MED Nutrition, Environment, Agriculture

In stock of ZB MED Bonn / Germany

Shelf mark	Loan status	Location
994/2693	available for loan (reading room)	Freihandmagazin (U1)

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