RT journal article
T1 Metals removal from acid mine drainage (Tinto River, SW Spain) by water gap and air gap membrane distillation
A1 Amaya Vias, David
A1 Tataru, Laurentiu
A1 Herce Sesa, Belén
A1 López López, José Antonio
A1 López Ramírez, Juan Antonio
A2 Anatomía PatológicaBiología Celular, Histología, Historia de la Ciencia, Medicina Legal y Forense y Toxicología
A2 Química Analítica
A2 Tecnologías del Medio Ambiente
K1 Water gap membrane distillation
K1 Air gap membrane distillation
K1 Acid mine drainage
K1 Metals
K1 Tinto river
AB Water pollution by metals and, in particular, acid mine drainage (AMD) is one of the most severe environmental problems to be faced by society. In this sense, treatment by membrane processes is a promising alternative, highlighting membrane distillation (MD) features to overcome the limitations of conventional processes. In this work, water gap MD (WGMD) and air gap MD (AGMD) were tested under different feed temperatures and organic matter concentrations, using 0.45 μm polytetrafluoroethylene (PTFE) membranes and real AMD from Tinto River, which is located in SW Spain. For both MD modes, high permeate fluxes (up to 16.80 L h−1 m−2 for WGMD and 10.16 L h−1 m−2 for AGMD) were reached and over 99% rejection was obtained for electrical conductivity, ions and metals (Na+, K+, Ca2+, Mg2+, F−, Cl−, NO3−, SO42−, Cu, Fe, Zn, Cd, Co, Mn, Ni). In addition, specific thermal energyconsumption (STEC) per unit of permeate water was calculated to obtain MD heat requirements. Furthermore, MD efficiency in terms of heat recovery was estimated by gained output ratio (GOR) between useful and total heat of the system. On that basis, MD and specifically the WGMD mode, showed great potential for the sustainable treatment of AMD.
PB Elsevier
SN 1873-3123
YR 2019
FD 2019-07-15
LK http://hdl.handle.net/10498/30479
UL http://hdl.handle.net/10498/30479
LA eng
NO Universidad de Cádiz, contrato predoctoral de formación (ref. 2015-036/PU/EPIF-FPI-CT/CP)
DS Repositorio Institucional de la Universidad de Cádiz
RD 08-nov-2026