Abstract

Experiments with a small-scale hollow fiber ultrafiltration system (50,000 MWCO) was used to characterize the filtration process and identify conditions that optimize the recovery of Cryptosporidium parvum oocysts from 2 L samples of water. Seeded experiments were conducted using deionized water as well as four environmental water sources (tap, ground, Arkansas river, and Rio Grande river; 0–30.9 NTU). Optimal and consistent recovery of spiked oocysts was observed (68–81%), when the membrane was sanitized with a 10% sodium dodecyl sulfate (SDS) solution and then blocked with 5% fetal bovine serum (FBS).

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