Welcome to LDAT!
LDAT is a free advanced modelling tool for complex porous materials that simulates the landfill processes involved in the degradation of waste into leachate and gas. Uniquely, LDAT couples the key landfill processes and calculates their interactions and effects simultaneously. The landfill processes represented include: waste degradation through bio-chemical reactions; gas solubility; gas and liquid diffusion; dissolution; chemical equilibrium; unsaturated gas and liquid flow; waste settlement; heat generation and transfer.
Click to see a demonstration of LDAT modelling. Select, edit and run an LDAT model without saving.
Please register, if you wish to save the model data and results..
Explore the LDAT Help and Model Documention.
How to start using LDAT
Register
Click on this link: Register and set up a password. The form as shown in the screen shot will appear for you to fill in your name and e-mail address. The e-mail address is your unique user name for logging in and is confirmed by sending you the following message after you have clicked the Register Now button -
(An email to setup your account password has been sent. Check SPAM if you can't find the e-mail in your inbox. Please follow the link in the email to get started.)
Clicking the link in the e-mail will first take you to a form which you use to select and confirm a password.
Password
The password must be at least 10 characters long and contain one numeric character, one uppercase character, one lowercase character and a special character. At any time in the future you will be able to change this password or, if you forget it, set another password.
After you have set your password you will be re-directed to the login page. Entering your e-mail and password will get you into the site and you can start using the LDAT dashboard.
LDAT Dashboard
A screen shot of the LDAT Dashboard is shown below. Note the dropdown with your user-name (e-mail address), Change password, and Logout options, in the top right hand corner.
The main component in the Dashboard page is a table that lists Cases (or instances of Ldat models). The Cases are grouped under the headings User Cases, Default Cases and Running Cases.
To start with you will have no User Cases, so you will need to create one by copying one of the Default Cases into your User Cases list. Full instructions for doing this, and running a model can be found in the Help and Information section of the site. This is accessed by clicking on the Help button in the main Navigation Bar at the top of the dashboard.
How is LDAT delivered?
The delivery of LDAT to the Waste Management Community uses a web based platform so that users can run the LDAT model using Cloud based processing power and storage simply by using their Internet browser.
The content of the LDAT website is founded on research carried out by the University of Southampton, UK. The website is now developed and maintained by Jim White and LDAT Online Ltd, james.white@ldat.online. Any difficulties or enquiries you have in using the site may be addressed to Jim.
The business of LDAT Online Ltd is to manage the delivery of LDAT to the Waste Management Teaching, Research, and Industrial Community.
How much does LDAT cost?
LDAT Online Ltd bears the cost of developing, delivering and maintaining the LDAT modelling system. It provides free access to individual students, and access for individuals and organisations developing resource intensive models is charged at cost. Once you have tried and tested LDAT for yourself, please contact Professor Jim White if you wish to run resource intensive models.
Whilst it is expected that this approach to costs will be maintained for the foreseeable future, please note that it is covered by the Terms and Conditions of use of the LDAT modelling system which allows it to be modified if necessary.
The full Terms and Conditions of use may be downloaded here.