A state of the art, phosphate functionalized cotton cellulose based green U(VI) adsorbent has been synthesized via single step, ⁶⁰Co gamma radiation mediated simultaneous irradiation grafting process, wherein bis(2-methacryloxyethyl) phosphate (B2MEP) was grafted onto cotton cellulose fabric. Samples were characterized using ¹³C NMR, FTIR, EDXRF, XRD and SEM techniques. Poly(B2MEP)-g-cellulose adsorbent (CellUSorb) was tested for removal of Uranyl (U(VI)) ions from water, adsorption capacities being 79.9 mg.g⁻¹ and 135.9 mg.g⁻¹ in batch and column modes, respectively. The equilibrium adsorption data were analyzed using Langmuir, Freundlich and Redlich-Peterson isotherm models, and kinetic data using pseudo first order, pseudo second order, intra-particle diffusion and Boyd’s models. The adsorbent viability was enhanced through regeneration achieved using ammonium oxalate as eluent, ensuring reusability for five cycles with < 20 % attrition loss/cycle. A standalone, portable water treatment set up, housing a ∼ 100 g CellUSorb cartridge (maximum theoretical U(VI) adsorption capacity ∼ 27,200L for [U(VI)] = 500 µg.L⁻¹), has been conceptualized, fabricated and successfully tested for U(VI) removal to < 30 µg.L⁻¹ (WHO permissible limit) from contaminated water. With potential upscaling for large scale, onsite U(VI) remediation, CellUSorb is a promising prospect that spotlights the role of cellulose in accomplishing UNO’s Sustainable Development Goal of “clean water for all” (SDG6).

最先进的磷酸盐功能化棉纤维素基绿色 U(VI) 吸附剂已通过单步合成，⁶⁰ Co γ 辐射介导的同步辐照接枝工艺，其中双（2-甲基丙烯酰氧乙基）磷酸酯（B2MEP）接枝到棉纤维素上织物。使用¹³ C NMR、FTIR、EDXRF、XRD 和 SEM 技术对样品进行表征。测试了聚 (B2MEP)-g-纤维素吸附剂 ( CellUSorb)从水中去除铀酰 (U(VI)) 离子的能力，吸附容量为 79.9 mg.g ^-1和 135.9 mg.g ^-1分别以批处理和列模式。使用 Langmuir、Freundlich 和 Redlich-Peterson 等温线模型分析平衡吸附数据，使用伪一级、伪二级、粒子内扩散和 Boyd 模型分析动力学数据。通过使用草酸铵作为洗脱液实现再生，吸附剂的活性得到增强，确保了五个循环的可重复使用性，每次循环的损耗损失 < 20%。一个独立的便携式水处理装置，装有一个 ∼ 100 g CellUSorb滤芯（[U(VI)] = 500 µg.L ⁻¹的最大理论 U(VI) 吸附容量 ∼ 27,200L ），已经被概念化、制造和U(VI) 去除率成功测试 < 30 µg.L ⁻¹（世卫组织允许的限度）来自受污染的水。CellUSorb具有大规模现场 U(VI) 修复的潜在升级潜力，前景广阔，它突出了纤维素在实现 UNO 的“人人享有清洁水”（SDG6）可持续发展目标中的作用。