Microbial Removal of Dye Stuffs

2019 ◽  
pp. 95-110
Author(s):  
T. Selvankumar ◽  
C. Sudhakar ◽  
M. Govarthanan
Keyword(s):  
Microbial Removal

scholarly journals Decompression sickness risk in rats by microbial removal of dissolved gas

1998 ◽  
Vol 275 (3) ◽  
pp. R677-R682 ◽  
Author(s):  
Susan R. Kayar ◽  
Terry L. Miller ◽  
Meyer J. Wolin ◽  
Eugenia O. Aukhert ◽  
Milton J. Axley ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
High Pressures ◽  
Decompression Sickness ◽  
Body Burden ◽  
The Body ◽  
Dissolved Gas ◽  
Hyperbaric Chamber ◽  
Methanobrevibacter Smithii ◽  
Water Rate ◽  
Microbial Removal

We present a method for reducing the risk of decompression sickness (DCS) in rats exposed to high pressures of H2. Suspensions of the human colonic microbe Methanobrevibacter smithii were introduced via a colonic cannula into the large intestines of the rats. While the rats breathed H2in a hyperbaric chamber, the microbe metabolized some of the H2diffusing into the intestine, converting H2and CO2to methane and water. Rate of release of methane from the rats, which was monitored by gas chromatography, varied with chamber H2pressure. This rate was higher during decompression than during compression, suggesting that during decompression the microbe was metabolizing H2stored in the rats’ tissues. Rats treated with M. smithii had a 25% (5 of 20) incidence of DCS, which was significantly lower ( P < 0.01) than the 56% (28 of 50) incidence of untreated controls, brought on by a standardized compression and decompression sequence. Thus using a microbe in the intestine to remove an estimated 5% of the body burden of H2reduced DCS risk by more than one-half. This method of biochemical decompression may potentially facilitate human diving.

scholarly journals Microbial Removal of Pb(II) Using an Upflow Anaerobic Sludge Blanket (UASB) Reactor

Catalysts ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 512
Author(s):  
Jeremiah Chimhundi ◽  
Carla Hörstmann ◽  
Evans M. N. Chirwa ◽  
Hendrik G. Brink
Keyword(s):  
Treatment Process ◽  
Removal Rate ◽  
Upflow Anaerobic Sludge Blanket ◽  
Uasb Reactor ◽  
Anaerobic Sludge ◽  
Reduction Potentials ◽  
Oxidation Reduction ◽  
Anaerobic Sludge Blanket ◽  
Microbial Removal ◽  
Maximum Removal

The main objective of this study was to achieve the continuous biorecovery and bioreduction of Pb(II) using an industrially obtained consortia as a biocatalyst. An upflow anaerobic sludge blanket reactor was used in the treatment process. The bioremediation technique that was applied made use of a yeast extract as the microbial substrate and Pb(NO3)2 as the source of Pb(II). The UASB reactor exhibited removal efficiencies of between 90 and 100% for the inlet Pb concentrations from 80 to 2000 ppm and a maximum removal rate of 1948.4 mg/(L·d) was measured. XRD and XPS analyses of the precipitate revealed the presence of Pb0, PbO, PbS and PbSO4. Supporting experimental work carried out included growth measurements, pH, oxidation–reduction potentials and nitrate levels.

Role of hydraulic retention time and granular medium in microbial removal in tertiary treatment reed beds

2003 ◽  
Vol 37 (11) ◽  
pp. 2645-2653 ◽  
Author(s):  
Joan Garcı́a ◽  
Joan Vivar ◽  
Maria Aromir ◽  
Rafael Mujeriego
Keyword(s):  
Retention Time ◽  
Granular Medium ◽  
Hydraulic Retention Time ◽  
Tertiary Treatment ◽  
Reed Beds ◽  
Microbial Removal

scholarly journals Microbial Removal of Cyanide Compounds and Soil Cyanide by K. oxytoca

2017 ◽  
Vol 4 (45) ◽  
pp. 523-531
Author(s):  
Nermin Hande Avcıoğlu ◽  
Işıl Seyis Bilkay
Keyword(s):  
Microbial Removal

Simultaneous microbial removal of sulphate and heavy metals from waste water

1991 ◽  
pp. 391-401 ◽  
Author(s):  
L. J. Barnes ◽  
J. Sherren ◽  
F. J. Janssen ◽  
P. J. H. Scheeren ◽  
J. H. Versteegh ◽  
...  
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Microbial Removal

Metagenomics: Insights into Microbial Removal of the Contaminants

2021 ◽  
pp. 293-306
Author(s):  
Dipti Singh ◽  
Shruti Bhasin ◽  
Anshi Mehra ◽  
Manali Singh ◽  
Neha Suyal ◽  
...  
Keyword(s):  
Microbial Removal

Microbial Removal of Toxic Chromium for Wastewater Treatment

2021 ◽  
pp. 185-204
Author(s):  
Joorie Bhattacharya ◽  
Rahul Nitnavare ◽  
Thomas J Webster ◽  
Sougata Ghosh
Keyword(s):  
Wastewater Treatment ◽  
Microbial Removal

Contribution for the Study of New Pathogenic Indicators Removal from W.S.P. in Portugal

1991 ◽  
Vol 24 (2) ◽  
pp. 381-386 ◽  
Author(s):  
M. J. Nascimento ◽  
J. S. Oliveira ◽  
L. Oliveira ◽  
J. T. Mexia
Keyword(s):  
Solar Radiation ◽  
Climatic Factor ◽  
Climatic Parameters ◽  
Faecal Coliforms ◽  
Different Types ◽  
Microbial Removal ◽  
Pathogens Removal ◽  
Faecal Streptococci

In the control of pathogens removal in W.S.P. in Portugal, other indicators than the classic ones were used to quantify die-off kinetics (Faecal coliforms, Faecal Streptococci, Clostridiumperfringens, Pseudomonasaeruginosa and Heterotrophies). The influence of climatic parameters (temperature, precipitation, solar radiation) in that kinetics was studied, different equations being tested to express relationships existing among climatic parameters and microbial removal in different types of ponds. The existence of significant correlations among these factors and parameters was concluded, as well as the dominance of certain models to quantify these relationships, differing according to the microorganisms considered, the type of lagoon and the climatic factor (θ) studied.

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