Varsha Jayachandran

10 Questions 3 Answers 0 Followers

Questions related from Varsha Jayachandran

How to determine the constant 'n' in the Tafel equation?

The standard Tafel equation is η = α + β log (i), and β = 2.303RT/nF, where n is the number of electrons transferred in the rate determining step. How to find the value of 'n'? Is it equal to the...

31 May 2025 5,411 0 View

Is coulombic efficiency (CE) same as electron distribution % of current as mg of chemical oxygen demand (COD)?

To determine the % of different electron sinks in MFCs, electron distribution (%) is represented as mg COD (eg: initial sCOD = 100%, current = 34%). Is this value of electron distribution same as...

31 July 2024 5,263 0 View

What are the methods available to test the concentration of potassium ferricyanide during MFC operation?

I am running MFC systems and I see, after long periods of operation, that all the ferricyanide ions have been reduced to ferrocyanide (by color change from yellow to transparent). How can I...

23 April 2024 7,775 0 View

What is the suitable working concentration to which I can dilute DNA probes for FISH? Should I use buffer or DI water for dilution?

I have a set of probes (length: 18 bp each) of concentration 100 pmol/µl targeting bacterial DNA. What is the suitable working concentration to which I can dilute these probes, so that I can use...

06 March 2024 2,225 0 View

Does proton exchange membrane (PEM) require pretreatment before every usage? What is the best way to store PEM after pretreatment?

Does PEM require pretreatment after every run in MFCs, before the next usage? Can PEMs be stored in de-ionized water at room temperature prior to usage? If yes, how long can they be stored?

03 January 2024 2,413 1 View

Does high concentration of suspended biomass impede electrical output in a MFC?

I have been running a MFC, and recently experiencing high biomass concentration in suspension, and simultaneous voltage drop, despite adding substrate to the anode chamber. What could be the...

12 October 2023 686 0 View

What could be the reason for sudden drop of OCV to zero? Does measurement of OCV require biofilm formation on anode?

Recently, I setup an MFC experiment, and the OCV fell to zero after showing a certain value for 8 mins. Is it because of no biofilm formation? Thank you in advance for your answers.

10 August 2023 3,796 6 View

What is a .NHD file type? What is the suitable file type for conversion from .NHD?

The data acquisition system (or collect card) connected to the microbial fuel cells in my experiments records data in .NHD format, and I'm unable to open these files on my laptop. What is the...

10 July 2023 2,639 1 View

What are the experimental prerequisites for starting an MFC operation?

I am a beginner in this field and have read from papers that a stable baseline current has to be obtained, the MFC should start its operation in an open circuit potential (OCP) etc. How do I check...

02 June 2023 223 1 View

In how many significant figures should you represent your p-values?

In order, not to represent the raw data, one has to round off the p-value. Say, your raw p-value is '

13 October 2022 6,968 3 View