RT journal article
T1 Optimization of biogenic sulfur flocculation from an anoxic desulfurization bioreactor using response surface methodology
A1 Torres Herrera, Sandra
A1 González Cortés, José Joaquín
A1 Almengló Cordero, Fernando
A1 Yeste Siguenza, María del Pilar
A1 Ramírez Muñoz, Martín
A1 Cantero Moreno, Domingo
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
A2 Ingeniería Química y Tecnología de Alimentos
K1 Biogenic sulfur
K1 Flocculation
K1 Optimization
K1 Response surface methodology
K1 Turbidity
AB Elemental sulfur is an interesting byproduct obtained in the anoxic biodesulfurization of biogas. However, the colloidal properties of this biogenic elemental sulfur (S0) make its efficient recovery difficult. The present study investigated the flocculation of S0 produced in an anoxic bioreactor for biogas desulfurization using cationic (Sedifloc 40L4 C, Lizaflock 853 M), anionic (Innoflock 201) and non-ionic flocculants (NI-1009) and a coagulant (polyaluminum chloride). Cationic-type flocculants showed the highest flocculation efficiency, which led to its selection for further evaluation using the response surface methodology of the effects and interactions of its dose, stirring speed and pH on the biogenic sulfur flocculation rate. Optimum S0 flocculation conditions were observed using Lizaflock 853 M at a dose of 0.82 mg L−1, a stirring speed of 30 rpm and a pH of 8.0. A S0 flocculation rate of 97.05% was achieved for an initial concentration of 1730 mg S0 L−1. The Zeta potential of the settled sulfur particles increased after the flocculation process. © 2022 The Author(s)
PB ELSEVIER
SN 10.1016/j.fuel.2022.124367
SN 0016-2361
YR 2022
FD 2022-09
LK http://hdl.handle.net/10498/26923
UL http://hdl.handle.net/10498/26923
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 07-nov-2026