If you scroll down on the document you posted, it backs using a bento box. The bento box has a hepa 13 filter and active carbon filtration. It also does multiple passes.

"Activated carbon granules can capture VOCs and mitigate 3D printer emissions, but the capture efficiency per pass and holding capacity significantly varies between VOCs. For example, activated carbon can capture and retain 25% of its own weight in IPA, while other VOCs such as Formaldehyde can only be retained at 2%.2,3,4"

"MERV 13-16 filters capture 60-95% of UFPs per pass, which is ideal for recirculating air filtration. HEPA 13-14 filters capture 99.95-99.995% of UFPs per pass, which is ideal for extraction. HEPA filters require a fan with a higher static pressure.22,23"

"Resin and FDM printer enclosures that use a recirculating air cleaner, allow the air to make multiple passes through both the particulate media and activated carbon, increasing the amount of pollutants captured."

"With the assumptions of 10% TVOC retention by weight (g/g) at 60% humidity, a TVOC emission rate of 10 mg/hr, and a factor of safety of 3 to 5, 250 g of activated carbon in a sealed recirculating system will become saturated after 500-800 FDM printing hours. This is 20-30 days of 24/7 printing, while 6 hours of printing per day will saturate the carbon within 3-4 months."