| dc.description.abstract |
<p>Roughly 40% of the world does not have access to appropriate sanitation of human
generated waste water. Lack of infrastructure and poverty in developing nations has
stymied the deployment of conventional sewage treatment practices. In helping to solve
this global issue requires the development of an energy efficient, cost-effective,
low-maintenance, and decentralized toilet system that can remediate human liquid waste,
or, blackwater. Herein, electrochemical disinfection as a means of treating blackwater
is investigated using degenerately boron-doped diamond and Magnéli-phase titanium
sub-oxide electrodes. It is found that both can be operated in potentiodynamic modes
to control surface chemistry and improve generation of biocidal oxidants such as hydrogen
peroxide and chlorine</p><p>in blackwater containing solutions. Use of a packed-bed
electrochemical reactor is also studied in the treatment of blackwater using Magnéli-phase
titanium sub-oxide granular electrodes. It is found that bed-height, flow-rate, and
blackwater chemistry</p><p>can greatly affect the effectiveness of electrochemical
disinfection and stability of a packed-bed electrochemical reactor. Overall, these
results highlight how existing electrode materials can be modified or controlled in-situ
to inhibit fouling, generate</p><p>oxidants using less energy, and therefore disinfect
blackwater pathogens more effectively.</p>
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