Both ciprofloxacin (CIP) and sugarcane bagasse have brought enormous pressure on environmental safety. Here, an innovative technique combining Fe-Mg-layered double oxides and ball milling was presented for the first time to convert bagasse-waste into a new biochar adsorbent (BM-LDOs-BC) for aqueous CIP removal. The maximum theoretical adsorption capacity of BM-LDOs-BC reached up to 213.1 mg g⁻¹ due to abundant adsorption sites provided by well-developed pores characteristics and enhanced functional groups. The results of characterization, data fitting and environmental parameter revealed that pore filling, electrostatic interactions, H-bonding, complexation and π-π conjugation were the key mechanisms for CIP adsorptive removal. BM-LDOs-BC exhibited satisfactory environmental safety and outstanding adsorption capacity under various environmental situations (pH, inorganic salts, humic acid). Moreover, BM-LDOs-BC possessed excellent reusability. These superiorities illustrated that BM-LDOs-BC was a promising adsorbent and created a new avenue for rational placement of biowaste and high-efficiency synthesis of biochar for antibiotic removal.

环丙沙星（CIP）和甘蔗渣都给环境安全带来了巨大压力。在这里，首次提出了一种将 Fe-Mg 层状双氧化物和球磨相结合的创新技术，将甘蔗渣废物转化为用于水 CIP 去除的新型生物炭吸附剂 (BM-LDOs-BC)。BM-LDOs-BC的最大理论吸附量达到213.1 mg g ^-1由于发达的孔隙特征和增强的官能团提供了丰富的吸附位点。表征、数据拟合和环境参数的结果表明，孔填充、静电相互作用、氢键、络合和π-π共轭是CIP吸附去除的关键机制。BM-LDOs-BC 在各种环境条件（pH、无机盐、腐植酸）下均表现出令人满意的环境安全性和出色的吸附能力。此外，BM-LDOs-BC 具有出色的可重用性。这些优势表明BM-LDOs-BC是一种很有前途的吸附剂，为生物废物的合理放置和生物炭的高效合成去除抗生素开辟了一条新途径。