Amyloid hybrid membranes: Removal of heavy metal contaminants from water and recover gold

S. Bolisetty*, BluAct Technologies GmbH; R. Mezzenga, ETH Zurich, Switzerland

Novel technology in which hybrid membranes made from β-lactoglobulin protein fibrils and porous carbon for the treatment of water contaminated with heavy metals, metal cyanides or radioactive substances. During filtration, the concentration of heavy metal ions drops by three to five orders of magnitude per passage and the process can be repeated numerous times. The protein fibrils in the composite membrane play the main role of sequestering heavy metal pollutants from the liquid. Importantly, these protein fibrils also allow the reduction of membrane-immobilized metal ions into valuable metal nanoparticles or thin films at elevated temperatures or via chemical routes, turning a global risk challenge into a unique opportunity. In a new study, just published in the journal Chemical Communications, these hybrid filter is able to trap both arsenite and arsenate efficiently and remove virtually all traces of it from water....

Figure 1 – Schematic representation of the composite activated carbon–amyloid fibril adsorber membrane and the heavy metal ion purification process for polluted water.

Session: M6 - Process and Waste Water Treatment I
Day: 15 March 2018
Time: 10:45 - 12:00 h

Learn more at FILTECH 2018 - Register Now!