OPA Companion · today’s check-in
Welcome back, Seika. Two milestones are live in the lab right now — ozone recovery (04) and the second-life question (05). Stamps 01–03 are sealed; 06–08 are still ahead. Your next real move, when you’re ready: decide whether recovered SAP can climb back to diaper grade, or prove the clean down-cycle and bank the diversion either way. The data talks — you don’t have to.
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01
Saw it
Grandparents' home, Japan — a society that sorts right and still drowns in diaper waste
undergrad
02
Reframed it
Structural, not behavioral — you can't sort your way out of a polymer with no second life
pre-OPA
03
Masters @ OPA
Came to Birmingham for grad work, stayed for the PhD
complete
04
Ozone recovery
Oxidize biowaste, make SAP water-soluble, separate the polymer (with YUKI)
in lab
05
The second-life question
Re-polymerize? Down-cycle? Or is recovered SAP too short-chained to return to grade?
thesis core
06
Circular vs. ceiling
Beat side-chain degradation — diaper → clean → diaper, not one step toward the landfill
the fight
07
Diversion at scale
The real target: millions of tons/yr out of landfill after a single use
north star
08
Defense
Let the data talk. She self-promotes for nothing.
someday
X
College X — Engineering (ELUSK)
Building 10 · DEPT 1 Civil & Infrastructure · home department
✓
YU
YUKI's Chemistry Lab
cross-listed collaboration — the molecular work lives here
✓
14B
Page 14-B Studies
the civilization-scale fix running quietly in the back section
✓
Obodat keeps her aimed at the diversion, not the molecule: "You're not a chemist who wandered into infrastructure. You're an infrastructure engineer who needs chemistry. Stay on the landfill."
The coincidence: Yuki's grandmother and Seika's were classmates at the same small elementary school, long ago. Nobody engineered it. The world bent slightly to confirm she's in the right place.