Research Abstracts

The concentration of bergamot peel oils by pervaporation, with and without enzymatic pre-treatment, is studied. The influence of different PV membranes, industrial enzymes and operational parameters on the PV process are also investigated. GC-MS analyses are carried out to evaluate the recovery of t

The anion exchange membranes had high rejection of the gold sols with flux three times greater than those of GVWP, whereas the cation exchange membranes and GVWP showed little capture as expected. The increase in pressure decreased the rejection rate of the gold sols indicating that residence time a

An innovative membrane module concept using honeycomb like-structured homogeneous flat sheet membranes has been developed. Within the membrane structure, hexagonal fluid channels are formed, stabilizing the packing without any mechanical support. With specially potted ports, addressing each channel,

By using SILMs in a nanofiltration ceramic module we increased the separation factor of the solute from 0.4 up to 177. On the other hand, the average permeating flux of the solute decreased from 34.3 g/(m2h) to 3.86 g/(m2h). Although the separation process with SILM was in one order of magnitude slo

UF carried out at pressures up to 4 bar and NF operated in all the range of pressures present a good performance in terms of permeation fluxes. The UF and NF permeation fluxes decrease slightly with WRR and they are 15– 19% lower than pure water fluxes indicating a low degree of membrane fouling for

An exposure to sodium hypochlorite produces chain breaking in the PSf molecules, which leads to changes to the membrane texture on the microscopic scale, and which is closely related to changes in the membrane mechanical properties. It has been shown that the mechanism

Electromembrane process yields can be enhanced by using pulsed electric field. Electrodialysis experiments carried out on brackish water solutions show that the same level of desalination can be reached faster under pulsed field conditions. A model based on the Nernst–Planck equations is developed t