First we add PPA repository that allows to install the latest version of Enlightenment environment:
sudo add-apt-repository ppa:niko2040/e19
Next we refresh the repos cache and install the new environment:
sudo apt update
sudo apt install enlightenment
In the end we logout from system and in the login screen we choose Enlightnement environment. After that we log in to the system.
To uninstall the Enlightenment we issue following commands:
sudo apt remove enlightenment
sudo apt autoremove