Hi David, Margaret from School of Mines here. Thanks so much for your help on the transport problem. I'm stuck again and was wondering if you had any advice. My thesis involves modeling the sorption, gas phase partitioning, and biodegradation of organics in a column. I'm starting with benzene to make it simple. Instead of calling benzene C6H6, I am calling it "benzene." I have created something called "benzdp" which is the benzene daughter product, the product of a first-order biodegradation decay. The database accepts the entry of the two under solution species. However, whenever I try to connect the two in the database (Benzene = Benzdp, log_k -20 or with an equation Benzene + H2O = Benzdp + H2O), the error says the elements aren't balanced. Do you have any advice on this? My second question involves the gas phase partitioning. I want the solution to move from cell to cell, each time encountering a new surface and gas bubble to which it will partition (sorption is working fine this way). Attached are my database and two input decks. I apologize for taking up your time but I'm at a place where I don't knkow what else to try. I'd appreciate any help that you can give me. Sincerely, Margaret Dodds
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