RT journal article
T1 PID control system for biogas desulfurization under anoxic conditions
A1 Brito, Javier
A1 Almengló Cordero, Fernando
A1 Ramírez Muñoz, Martín
A1 Gómez Montes de Oca, José Manuel
A1 Cantero Moreno, Domingo
A2 Ingeniería Química y Tecnología de Alimentos
K1 biofiltration of waste gases
K1 biogas
K1 energy
K1 process control
K1 removal
K1 environmental biotechnology
AB BACKGROUNDA high H2S elimination capacity has been achieved by anoxic biotrickling filters but accurate control of the nitrate dosage is required. Different control strategies have been used in biotrickling filters but proportional-integral-derivative (PID) control studies have not been reported to date. The aim of this study was to demonstrate the stability and robustness of PID control in an anoxic biotrickling filter.RESULTSThree PID tuning methods were tested: Ziegler–Nichols, Approximate M-constrained integral gain optimization (AMIGO), and maintained oscillation. The best results were obtained using PID control by the maintained oscillation method, where the system reached stabilization 0.41 h after the H2S inlet step. Moreover, the nitrate consumption was 15.4% lower than that without control.CONCLUSIONThe biotrickling filter operated with a PID control strategy proved to be highly stable and robust against the perturbations and disturbances evaluated. The control system was able to operate satisfactorily to a change in the set-point of the outlet H2S concentrations from 25 to 200 ppmV. The desulfurized biogas could be fed directly to an internal combustion engine or solid oxide fuel cell (SOFC) equipped with a zeolite clean unit. © 2017 Society of Chemical Industry
PB Wiley
SN 0268-2575
YR 2017
FD 2017-09
LK http://hdl.handle.net/10498/29997
UL http://hdl.handle.net/10498/29997
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 07-nov-2026