TY - JOUR
T1 - A two-stage ultrafiltration and nanofiltration process for recycling dairy wastewater
AU - Luo, Jianquan
AU - Ding, Luhui
AU - Qi, Benkun
AU - Jaffrin, Michel Y.
AU - Wan, Yinhua
PY - 2011
Y1 - 2011
N2 - A two-stage ultrafiltration and nanofiltration (UF/NF) process for the treatment of model dairy wastewater was investigated to recycle nutrients and water from the wastewater. Ultracel PLGC and NF270 membranes were found to be the most suitable for this purpose. In the first stage, protein and lipid were concentrated by the Ultracel PLGC UF membrane and could be used for algae cultivation to produce biodiesel and biofuel, and the permeate from UF was concentrated by the NF270 membrane in the second stage to obtain lactose in retentate and reusable water in permeate, while the NF retentate could be recycled for anaerobic digestion to produce biogas. With this approach, most of dairy wastewater could be recycled to produce reusable water and substrates for bioenergy production. Compared with the single NF process, this two-stage UF/NF process had a higher efficiency and less membrane fouling.
AB - A two-stage ultrafiltration and nanofiltration (UF/NF) process for the treatment of model dairy wastewater was investigated to recycle nutrients and water from the wastewater. Ultracel PLGC and NF270 membranes were found to be the most suitable for this purpose. In the first stage, protein and lipid were concentrated by the Ultracel PLGC UF membrane and could be used for algae cultivation to produce biodiesel and biofuel, and the permeate from UF was concentrated by the NF270 membrane in the second stage to obtain lactose in retentate and reusable water in permeate, while the NF retentate could be recycled for anaerobic digestion to produce biogas. With this approach, most of dairy wastewater could be recycled to produce reusable water and substrates for bioenergy production. Compared with the single NF process, this two-stage UF/NF process had a higher efficiency and less membrane fouling.
U2 - 10.1016/j.biortech.2011.05.012
DO - 10.1016/j.biortech.2011.05.012
M3 - Journal article
C2 - 21624829
SN - 0960-8524
VL - 102
SP - 7437
EP - 7442
JO - Bioresource Technology
JF - Bioresource Technology
IS - 16
ER -