{"id":"W4387302682","doi":"10.2175/193864718825159181","title":"Digester Gas to Biomethane: Design, Construction, and Operation Lessons Learned","year":2023,"lang":"en","type":"article","venue":"Proceedings of the Water Environment Federation","topic":"Oil, Gas, and Environmental Issues","field":"Energy","cited_by":0,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"","keywords":"Biogas; Renewable natural gas; Greenhouse gas; Natural gas; Payback period; Renewable energy; Waste management; Methane; Engineering; Environmental science; Fuel gas; Production (economics); Economics","routes":{"ca_aff":false,"ca_fund":false,"ca_venue":false,"about_ca":true,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0002802556,0.0001559731,0.0001425053,0.00009412754,0.0003132395,0.0001120833,0.0001117145,0.00007504329,0.0001014421],"category_scores_gemma":[0.00001603229,0.00009498272,0.00003662447,0.00008182092,0.0001138712,0.0003176084,0.0001756333,0.000064186,0.0002455217],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00006321217,"about_ca_system_score_gemma":0.000002103103,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.00004419927,"about_ca_topic_score_gemma":0.000005589944,"domain_scores_codex":[0.9989716,0.00002074798,0.0002331118,0.000302544,0.0002527946,0.0002191647],"domain_scores_gemma":[0.9997577,0.00001411327,0.00006279667,0.00009489874,0.00001025697,0.000060237],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.0000431269,0.00003054231,0.002270729,0.00002374291,0.00002360287,1.950479e-7,0.002830107,0.003710354,0.9810925,0.0006870222,0.0003250653,0.008962999],"study_design_scores_gemma":[0.0002994857,0.00009837811,0.004718482,0.00001983306,0.00002840476,0.000005939478,0.0006761529,0.0004964658,0.9791064,0.002917743,0.01146922,0.0001634445],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9867598,0.00001164184,0.000507821,0.0116189,0.0001203504,0.0003507885,0.000002544471,0.00006192789,0.0005662334],"genre_scores_gemma":[0.9941878,0.000208902,0.002350511,0.0001385942,0.00007838698,0.00006894732,0.00001880529,0.00002756908,0.002920489],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.01148031,"threshold_uncertainty_score":0.3873283,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.03755743433225511,"score_gpt":0.2450824710801814,"score_spread":0.2075250367479263,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}