Doubling the space-time yield of a pilot biogas reactor with swine manure and cereal residues by a closed loop feedback control based on an automated fuzzy logic control system

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SUMMARY

    Full-scale biogas plants are generally manually directed or equipped, still with a simple remote system, but without a closed-loop control system or Fuzzy logic control (FLC), which has not yet been established for this purpose. Otherwise, acidification by intermediates such as volatile fatty_acids (VFA) generally leads to severe disturbance of the biogas production process. Three control parameters-pH, the methane content of the biogas, and the specific gas production rate (specific GPR)-were found to be most suitable, which operated as a real feedback control system in a closed loop to sustain . . .

     

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