Theoretical Potential Of Salinity Gradient Energy

The driving force for transport of a component in salinity gradient power is a gradient in Gibbs energy or a potential difference between the two salt solutions. The Gibbs energy of a system reflects that part of the energy of the system that is available for work. The total amount of energy available from mixing 1m of a concentrated and 1m of a diluted salt solution can be determined from the chemical potential difference of the system after mixing, subtracted by the chemical potential of the system before mixing (Fig. 1):

where AGmix is the change in Gibbs energy (J/mol) and Gb, Gc, and Gd are the Gibbs energies of the brackish, the concentrated, and the diluted solution, respectively (J/mol). The Gibbs energy of an ideal solution is equal to g = mn (2)

where G is the Gibbs energy of the system (J/mol), m the chemical potential of component i in the solution (J/mol), and ni the number of moles of component i in the solution.

The chemical potential of a component i (m) in an ideal solution can be written as (e.g., [5])

Was this article helpful?

0 0
Trash To Cash

Trash To Cash

This book will surely change your life due to the fact that after reading this book and following through with the steps that are laid out for you in a clear and concise form you will be earning as much as several thousand extra dollars a month,  as you can see by the cover of the book we will be discussing how you can make cash for what is considered trash by many people, these are items that have value to many people that can be sold and help people who need these items most.

Get My Free Ebook

Post a comment