TY - JOUR
T1 - Copper bioaccumulation in an upflow anaerobic sludge blanket reactor
AU - Certucha-Barragán, María Teresa
AU - Acedo-Félix, Evelia
AU - Monge-Amaya, Onofre
AU - Valenzuela-García, Jesús Leobardo
AU - Almendariz-Tapia, Francisco Javier
AU - Leal-Cruz, Ana Lilia
N1 - Funding Information:
We are grateful to the Center for Research and Advanced Studies (CINVESTAV - Saltillo) for the characterization of sludge. We also thank the Department of Chemical Engineering and Metallurgy of the University of Sonora for support in the realization of this research. This research was supported by the Consejo Nacional de Ciencia y Tecnología (CONACYT-ID project 82561).
PY - 2009/8
Y1 - 2009/8
N2 - The main objective of this work was to study the capacity of bioaccumulation of copper in an upflow anaerobic sludge blanket (UASB) reactor, for the treatment of acid mine drainages (AMD). UASB reactor of 0.8 L was fed with sodium acetate, the organic loading rate (OLR) was set at 2.0gCOD/L d, and experiments were performed in the reactor during 115 days. After 30 days, the COD removal efficiency was 90%. In the stationary stage, the higher production methane was 0.253 L/L d. The reactor was added with 20mgCu(II)/L during 30 days. The copper bioaccumulation was 98% and it was accumulated gradually in sludge until reaching a 61.6mgCu(II)ygTS. The toxicity study demonstrated that the copper concentration at which the level of specific methanogenic activity (SMA) of the biogranules was reduced to 50% of the control (IC50), was 280 mgCu(II)/L.
AB - The main objective of this work was to study the capacity of bioaccumulation of copper in an upflow anaerobic sludge blanket (UASB) reactor, for the treatment of acid mine drainages (AMD). UASB reactor of 0.8 L was fed with sodium acetate, the organic loading rate (OLR) was set at 2.0gCOD/L d, and experiments were performed in the reactor during 115 days. After 30 days, the COD removal efficiency was 90%. In the stationary stage, the higher production methane was 0.253 L/L d. The reactor was added with 20mgCu(II)/L during 30 days. The copper bioaccumulation was 98% and it was accumulated gradually in sludge until reaching a 61.6mgCu(II)ygTS. The toxicity study demonstrated that the copper concentration at which the level of specific methanogenic activity (SMA) of the biogranules was reduced to 50% of the control (IC50), was 280 mgCu(II)/L.
KW - Acid mine drainages
KW - Bioaccumulation
KW - Copper
KW - UASB reactor
UR - http://www.scopus.com/inward/record.url?scp=77949292478&partnerID=8YFLogxK
U2 - 10.3184/095422909X12470568098587
DO - 10.3184/095422909X12470568098587
M3 - Artículo
SN - 0954-2299
VL - 21
SP - 161
EP - 164
JO - Chemical Speciation and Bioavailability
JF - Chemical Speciation and Bioavailability
IS - 3
ER -