Journal ArticleDOI
Toxicity and bioaccumulation kinetics of arsenate in two freshwater green algae under different phosphate regimes.
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TLDR
Arsenate transporters of S. obliquus were found to have a higher affinity but lower capacity than those of C. reinhardtii, which explains its better regulation of arsenate accumulation than the latter species in the toxicity experiment, and these findings will facilitate the application of algae in arsenate remediation.About:
This article is published in Water Research.The article was published on 2013-05-01. It has received 137 citations till now. The article focuses on the topics: Arsenate & Arsenic.read more
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Bioremediation of heavy metals using microalgae: Recent advances and mechanisms.
TL;DR: Tolerance and response of different microalgae strains to heavy metals and their bioaccumulation capability with value-added by-products formation as well as utilization of non-living biomass as biosorbents are discussed.
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Review of arsenic speciation, toxicity and metabolism in microalgae
Ya Wang,Shu Wang,Pingping Xu,Cong Liu,Misha Liu,Yulan Wang,Changhai Wang,Chunhua Zhang,Ying Ge +8 more
TL;DR: Future research need to focus on the regulative mechanisms of arsenic absorption, biotransformation and excretion at molecular level; the effects of intracellular nutrient dynamics on arsenic speciation; the impacts of culture regime on the arsenic metabolism in microalgae; and the transfer of arsenic species across aquatic food web in order to better evaluate the roles of micro algae in arsenic cycling.
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Is arsenic biotransformation a detoxification mechanism for microorganisms
TL;DR: The discussion of whether the biotransformation of As species in microorganisms is really a detoxification process with recent data demonstrates the need to reconsider to what extent As biomethylation contributes to a detoxifying process.
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Arsenic speciation and biotransformation pathways in the aquatic ecosystem: The significance of algae.
Muhammad Hussain,Jianxu Wang,Irshad Bibi,Muhammad Shahid,Nabeel Khan Niazi,Nabeel Khan Niazi,Jibran Iqbal,Ishaq Ahmad Mian,Sabry M. Shaheen,Safdar Bashir,Noor S. Shah,Kiran Hina,Jörg Rinklebe +12 more
TL;DR: The current review provides the updated and useful framework for government and water treatment agencies to implement algae in As remediation programs globally.
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TiO2 Nanoparticles Act As a Carrier of Cd Bioaccumulation in the Ciliate Tetrahymena thermophila
TL;DR: It is found that PAA-TiO2-NPs could get into Tetrahymena cells directly and Cd could be taken up by T. thermophila in the form of free ion or metal-nanoparticle complexes through the two routes above, which should pay attention to the carrier effects of nanoparticles when assessing their environmental risks.
References
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Journal ArticleDOI
A review of the source, behaviour and distribution of arsenic in natural waters
TL;DR: The scale of the problem in terms of population exposed to high As concentrations is greatest in the Bengal Basin with more than 40 million people drinking water containing ‘excessive’ As as mentioned in this paper.
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Yellow‐green algae with chlorophyllide c1,2
TL;DR: Chlorophyllide c (chlorophyll c) wax found in axenic or unialgal cultures of 5 members of the class Xanthophyceae and in 2 members ofThe class Raphidophyceai (ChloromonadophyceAE).
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Arsenic uptake and metabolism in plants.
TL;DR: Hyperaccumulation appears to involve enhanced arsenate uptake, decreased arsenite-thiol complexation and arsenite efflux to the external medium, greatly enhanced xylem translocation of arsenite, and vacuolar sequestration of arsenites in fronds.
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Negative pH, efflorescent mineralogy, and consequences for environmental restoration at the Iron Mountain Superfund site, California.
Nordstrom Dk,Charles N. Alpers +1 more
TL;DR: Geochemical calculations show that, under a mine-plugging remediation scenario, the resultant 600,000-m3 mine pool would have a pH of 1 or less and contain several grams of dissolved metals per liter, much like the current portal effluent water.
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The uptake and reduction of arsenic species by marine algae
TL;DR: Calculations based on the measured rates of reduction indicate that 15–20% of the total arsenic is reduced by phytoplankton during the spring and fall blooms on the continental shelf.