Pilot-scale evaluation of ammonia recovery from anaerobic digestion leachate using a membrane contactor: Performance optimization and practical feasibility assessment - Seonkyu Lee; Youngkwon Choi; Songbok Lee; Daeho Lee; Da Yun Kwon; Jieun Kim; Jungeun Park; Joowan Lim; YeonKwon Kim; Sungpyo Kim; Ho Kyong Shon; Youngjin Kim (Journal of Water Process Engineering, 2026)