TECHNOLOGY FOCUS - BIOTECHNOLOGY - Preferred Method: The microorganism consortium contains one or more additional enzymes to convert the activated aromatic hydrocarbon into benzoyl-CoA. The microorganism consortium contains one or more additional enzymes to convert benzoyl-CoA into pimelyl-CoA or convert pimelyl-CoA into 3-hydroxypimelyl-CoA. The microorganism consortium contains dearomatizing benzoyl-CoA reductase enzyme to convert the benzoyl-CoA into cyclohexa-1,5-diene-1-carbonyl-CoA, and hydratase enzyme to convert the cyclohexa-1,5-diene-1-carbonyl-CoA into 6-oxocyclohex-1-ene-1-carbonyl-CoA, and hydrogenase enzyme to convert the 6-oxocyclohex-1-ene-1-carbonyl-CoA into 3-hydroxypimelyl-CoA. The microorganism consortium contains one or more additional enzymes to convert 3-hydroxypimelyl-CoA into acetyl-CoA and carbon dioxide. The microorganism consortium contains a short chain alcohol dehydrogenase enzyme to convert the 3-hydroxypimelyl-CoA into 3-ketopimelyl-CoA. The microorganism consortium contains acyl-CoA acetyltransferase enzyme to convert the 3-ketopimelyl-CoA into glutaryl-CoA. The microorganism consortium contains glutaryl-CoA dehydrogenase and glutaconyl-CoA decarboxylase enzymes to convert the glutaryl-CoA into crotonyl-CoA. The microorganism consortium contains a 3-hydroxybutyryl-CoA dehydratase enzyme to convert the crotonyl-CoA into 3-hydroxybutyryl-CoA or 3-hydroxybutyryl-CoA into acetoacetyl-CoA. The microorganism consortium contains acetoacetyl-CoA thiolase to convert the acetoacetyl-CoA into acetyl-CoA. The microorganism consortium contains one or more additional enzymes to convert acetyl-CoA into acetate or convert acetate into methane and carbon dioxide. The microorganism consortium contains one or more additional enzymes to convert the activated hydrocarbon into a fatty acid. The microorganism consortium contains one or more additional enzymes to convert the fatty acid into acetate.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: The starting aromatic hydrocarbon is activated by fumarate addition, hydroxylation reaction or methylation reaction, and the chemical group is fumarate or hydroxyl group or carboxyl group. The hydrogen-carbon containing fluid comprises alkane having 1-5C, preferably alcohol or organic acid. The starting alkane is activated by fumarate addition, and the chemical group is fumarate. The starting activated hydrocarbon is substituted succinate. The starting alkane is 6-40C alkane. The hydrogen-carbon containing fluid comprises methane.