Deep dewatering of sludge and resource recovery of hydroxyapatite: A recyclable approach via ionic liquid biphasic system and hydrogen bonds reformation - Fang Luo; Zhuo Liu; Siqi Wang; Jia Wang; Lingzhi He; Zhuwei Liao; Huijie Hou; Xiangrui Liu; Xinxin Wang; Zhuqi Chen (Science of The Total Environment, 2024)