Nitish Venkateswarlu

28 Questions 32 Answers 0 Followers

Questions related from Nitish Venkateswarlu

Does anaerobic acidogenesis of cattle manure produce humic acid? what is maximum amount of humic acid that can be produced from anaerobic digestion?

Information on humic acid from cow dung.

26 March 2019 3,997 4 View

Can I use Ion chromatography for cation analysis of ammonium acetate soil extracts? any methods to reduce NH4OAc background for IC analysis?

any methods to reduce NH4OAc background for IC analysis? or any alternate soil extraction procedures available for cation analysis with IC in order to determine CEC?

25 March 2019 6,852 6 View

Can autotrophic nitrifiers form nitrate despite presence of low levels of alkalinity (3 times lower than conventional requirement)?

In a set of nitrification of black wastewater experiments, nitrate formation took place despite low levels of alkalinity (lower than 7.14 mg alkainity per mg of NH4-N oxidised. what could be the...

07 October 2018 7,262 9 View

What is the effect of evaporation loss on concentrations of COD, ammonium, nitrate and bicarbonate in a batch aerobic reactor (open to air)?

What changes does evaporation losses cause in organic and inorganic concentrations of aerobic reactor?

12 January 2018 540 7 View

What are the all the biomass estimation methods available alternative to VSS measurement for Nitrification and Denitrification kinetics in wastewater?

I need to analyse Monod kinetics for nitrogen removal from wastewater. Can anyone provide me with alternative biomass estimation methods( instead of VSS)?

31 July 2017 9,270 6 View

Can anyone provide me with various micro-organisms assisted reactions producing OH- ions/alkaline pH?

I need information on microbially assisted chemical reactions causing alkaline pH. bacterial urea hydrolysis is one such reaction which produces alkaline pH. Are there any other similar reactions...

27 July 2017 6,755 3 View

What is the impact of thick scum layer on anaerobic treatment of black wastewater?

Does gases trapped by scum layer will reduce organic matter reduction in anaerobic septic tank?

22 February 2017 3,324 8 View

Does organic material leached into water interfere with bicarbonate - alkalinity measurement? how to avoid organic material interference ?

Simple mixing of organic manures with water increases bicarbonate value.

28 July 2016 1,669 4 View

Whether nitrate agar is selective medium for denitrifying bacteria only? If not, which medium is most suitable for denitrifying bacterial counts?

When wastewater sample (mixed culture of bacteria) is plated on nitrate agar medium, do denitrifying bacteria only grow because presence of nitrate in medium composition?

13 July 2016 7,269 1 View

How do I design a soil column which provides low flow rate (such as 70-100ml/hr) using clay-rich soil (40-50%clay) for water filtration purposes?

How do I start and go ahead on above problem for packing soil column? high clay content - swelling issue.

09 July 2015 2,580 4 View

How do I calculate chlorophyll-a concentration for water column using chlorophyll-a value measured at discrete fixed depths in coastal waters?

If trapezoidal integration method is used, it provides value with units of mg/m2 (which is per area) but I need to know is there any way to get chlorophyll value for entire water column in terms...

05 May 2015 3,385 9 View

How can I create an annual trend for chlorophyll a concentration for a coastal location, if availability of data is as stated below?

1. Chlorophyll a concentration at three sampling points of a study coastal location. (The distance between sampling locations from coast varies between 10 - 25 km). 2. Chlorophyll a concentration...

16 April 2015 7,981 5 View

With respect to studies on Marine and Coastal waters, Is there a difference "Water Quality Parameters" and "Environmental Quality parameters"?

With respect to studies on Marine and Coastal waters, Is there a difference between the meaning behind use of words "Water Quality Parameters" and "Environmental Quality parameters"?

15 April 2015 8,710 2 View

How to derive tidal measurments (tidal height etc) using satellite remote sening?

For my study region, I would like to know the tidal height value for each day of sampling during study period for the water sampling locations? As some measurments dated back 3-5 years ago, i do...

03 April 2015 2,972 5 View

Is MODIS/AQUA or MODIS/TERRA best for chlorophyll extimation via ocen color imaging?

I know the orbital difference between both satellites. But for Chlorophyll a estimation, which is best MODIS TERRA AND MODIS AQUA. Because most of research studies i have come across utilizing...

12 December 2014 7,840 6 View

How might one scale down the reflectance values in the range 0.0 - 1.0 from MODIS land reflectance products?

Scale factor of 10000 is know but values are between -100 to 16000 rather than 0 to 10000 because of atmospheric correction applied.

05 November 2014 5,378 3 View

Can anyone provide a list of collection centers in India where marine phytoplankton cultures can be procured?

Specifically, marine phytoplankton.

25 August 2014 1,029 6 View

How to use in-situ time series coastal water quality data in remote sensing & gis for modelling, prediction and visualization of a water quality map?

What are the required steps to generate water quality maps? And, if possible, does anybody have beginner level literature?

25 August 2014 2,403 3 View

What are modelling approaches and software available to predict environmental quality and visualize water quality maps along a coastal stretch?

Environmental data (including biological data) available and how to generate maps of area using the data?(at beginner level)

21 August 2014 5,863 4 View

In a standard false color composite of remote sensing image of an ocean or sea, what does light blue color in offshore regions indicate?

As the images displays offshore region of sea, it may not be fresh water input? what else is the possibility? can anyone tell me what does light blue color signify in offshore waters?

28 May 2014 6,481 3 View

What is criteria to place a phytoplankton species under the list of bloom forming species?

Are there any laboratory experiments performed to ascertain that a particular sp. may cause harmful blooms under climate change?

27 May 2014 6,537 6 View

Can I preserve filters containing biomass in 90% acetone and stored in dark conditions at room temperature for 7 days for a Chl a measurement?

If not, how to preserve marine water samples for Chl a test for longer duration when refrigeration is not possible?

03 February 2014 4,377 4 View

Can sulfuric acid be used to preserve water samples for orthophosphate analysis?

If not, what is best method to preserve water samples for orthophosphate test?

28 January 2014 7,873 5 View

For a beginner using computer modelling in climate science, what are the resources, tools, and languages that need to be learned?

How to start and run a climate model for a beginner?

04 October 2013 1,649 2 View

Which parameters should be taken into account to find the effect of climate change on coastal ecosystem?

Climate change parameters and ecological parameters

12 August 2013 9,528 2 View

Among soil based and gravel based constructed wetland, which is best to use for domestic wastewater treatment?

Does absence of soil layer in gravel based constructed wetland affect the treatment efficiency? if so, how?

17 January 2013 4,903 6 View

Does ammonifying bacteria compete with nitrifying bacteria in wetland environment?

If yes, what are the favorable conditions for this situation ?

23 December 2012 6,431 5 View

In the case of a FWS constructed wetland, does increasing the anaerobic conditions and decreasing the plant density lead to an increase in outlet ammonia concentrations?

What are the reasons for an increase in outlet ammonia concentrations in a constructed wetland?

18 December 2012 696 6 View