Economic study on biohydrogen production from liquid pineapple waste - Syaza I. Ahmad; Roslina Rashid; Zanariah Hashim; Chew Chee Meng; Chong Kar Lun; Den Muhammad Hamdi Jumaatuden; Norhidayah Ahmad Yasin; Ashella Jati; Mimi H. Hassim (Clean Technologies and Environmental Policy, 2022)