Journal ArticleDOI
Rock weathering by indigenous heterotrophic bacteria of Bacillus spp. at different temperature: a laboratory experiment
Reads0
Chats0
TLDR
In this paper, the degradation process of silicate minerals to understand the weathering processes occurring at the change temperature in the subsurface environment with organic input was investigated with psychrotrophic heterotrophic bacteria.Abstract:
The bio-weathering of basalt, granite and gneiss was experimentally investigated in this study These rock-forming minerals weathered more rapidly via the ubiquitous psychrotrophic heterotrophic bacteria With indigenous bacteria of Bacillus spp from sediments of Lake Baikal, we traced the degradation process of silicate minerals to understand the weathering processes occurring at the change temperature in the subsurface environment with organic input The bacteria mediated dissolution of minerals was monitored with solution and solid chemistry, X-ray analyses as well as microscopic techniques We determined the impact of the bacteria on the mineral surface and leaching of K, Ca, Mg, Si, Fe, and Al from silicate minerals In the samples the release of major structural elements of silicates was used as an overall indicator of silicate mineral degradation at 4°C and 18°C from five medium exchanges over 255 days of rock bioleaching The increase of temperature importantly affected the efficiency of Fe extraction from granite and basalt as well as Si extraction from granite and gneiss In comparison with elemental extraction order at 4°C, Ca was substituted first by Fe or Si It is evident that temperature influences rock microbial weathering and results in a change of elements extractionread more
Citations
More filters
Journal ArticleDOI
The role of microorganisms at different stages of ecosystem development for soil formation
Stefanie Schulz,Robert Brankatschk,Alexander Dümig,Ingrid Kögel-Knabner,Michael Schloter,Josef Zeyer +5 more
TL;DR: In this review, insights into the role of microbes for soil development are given based on studies performed within the Collaborative Research Program DFG SFB/TRR 38 and are supplemented by data from other studies.
Journal ArticleDOI
Matworld – the biogeochemical effects of early life on land
TL;DR: There is growing evidence that life has been on land for billions of years, and evidence for Neoproterozoic 'greening of the land' and intensification of weathering c.
Journal ArticleDOI
Quantitative determination of the effect of temperature on mudstone decay during wet–dry cycles: A case study of ‘purple mudstone’ from south-western China
TL;DR: In this article, the decay rate of various purple mudstones was observed and a model with which to calculate their decay rates under varied temperature conditions was developed, which indicated that temperature difference has a stronger effect on purple mudstone decay than that of temperature magnitude during the wetting-drying processes.
Journal ArticleDOI
Biogenic deterioration of Egyptian limestone monuments: treatment and conservation
TL;DR: In this paper, the authors studied the biodeterioration activity of bacteria on ancient Egyptian limestone monuments and their treatments and found that the most damaging isolates were Bacillus safensis 9K (MH370265) and Streptomyces rochei 50(MH370266) with 20.9 and 25.6% of total amounts of CaCO3 degradation.
Journal ArticleDOI
River Water Quality of the Selenga-Baikal Basin: Part I—Spatio-Temporal Patterns of Dissolved and Suspended Metals
Nikolay Kasimov,Galina Shinkareva,Mikhail Lychagin,N. E. Kosheleva,Sergey Chalov,Margarita Pashkina,Josefin Thorslund,Jerker Jarsjö +7 more
TL;DR: In this paper, the authors synthesize data from extensive field measurements within the Selenga River basin performed between 2011 and 2016, covering over 100 sampling locations, and show that although the background metal concentrations (of both dissolved and suspended metal forms) in the alkaline Selengga River waters were close to the world averages, metal concentrations of up to two orders of magnitude above the background values were seen for Zn, As, Cd, Cu, Mo, and Pb in regions subject to anthropogenic impacts (cities and the mining industry).
References
More filters
Book
The Mineral Nutrition of Higher Plants
M. H. Martin,H. Marschner +1 more
TL;DR: This chapter discusses the relationship between Mineral Nutrition and Plant Diseases and Pests, and the Soil-Root Interface (Rhizosphere) in Relation to Mineral Nutrition.
Book
Mineral Nutrition of Higher Plants
TL;DR: In this article, the authors discuss the relationship between mineral nutrition and plant diseases and pests, and diagnose deficiency and toxicity of mineral nutrients in leaves and other aerial parts of a plant.
Journal ArticleDOI
Dissimilatory Fe(III) and Mn(IV) reduction.
TL;DR: The physiological characteristics of Geobacter species appear to explain why they have consistently been found to be the predominant Fe(III)- and Mn(IV)-reducing microorganisms in a variety of sedimentary environments.
Book
Ground-water microbiology and geochemistry
TL;DR: This paper focuses on the study of the biodegradation and bioremediation of Halogenated Organic Compounds in Ground-Water Systems, which are involved in the decomposition of petroleum hydrocarbons in the ground- water environment.