Laboratory scale sorption and desorption experiments were performed to investigate the cesium (Cs) removal efficiency of a bead-shaped polysulfone carrier containing HNO₃-treated bamboo charcoal (BC). The average Cs removal efficiency of BC only and of polysulfone carrier without BC after 1 h sorption reaction was 53 and 18%, respectively. However, the Cs removal efficiency for the polysulfone carrier with 5% HNO₃-treated BC (P-5N-BC) after 1 h and 24 h reaction was 66 and 98%, respectively. The Cs removal efficiency after 24 h reaction remained >85% over a wide range of pH and temperature conditions, suggesting that using P-5N-BC as the Cs adsorbent is feasible in a variety of aquatic environments. The maximum Cs sorption capacity (q_m) of P-5N-BC, as calculated from a Langmuir isotherm model, was 60.9 mg/g, which is much higher than those of other adsorbents from previous studies for 1 h of sorption time. The Cs desorption rate of P-5N-BC for 24 h desorption time was <17%, showing that the Cs was stably enough attached to the HNO₃-treated BC for long-term use. The results of continuous column experiments showed that the total amount of treated water from the column packed with P-5N-BC increased more than nine times when compared with that from the only BC-granule-packed column. The P-5N-BC maintained more than 68% Cs removal efficiency after 90 pore volumes of flushing, suggesting that only 15 g of P-5N-BC (with only 0.75 g of HNO₃-treated BC) could clean 5 L of Cs-contaminated water (initial Cs concentration: 1.0 mg/L; effluent concentration: < 0.09 mg/L). The present results demonstrate that P-5N-BC has remarkable potential for removal of Cs from diverse water systems.

进行实验室规模的吸附和解吸实验，以研究含HNO ₃处理的竹炭（BC）的珠状聚砜载体的铯（Cs）去除效率。吸附反应1 h后，仅BC和不含BC的聚砜载体的平均Cs去除效率分别为53％和18％。但是，在1 h和24 h反应后，含5％HNO ₃处理的BC（P-5N-BC）的聚砜载体的Cs去除效率分别为66％和98％。在宽范围的pH和温度条件下，反应24小时后的Cs去除效率保持> 85％，这表明在许多水生环境中使用P-5N-BC作为Cs吸附剂是可行的。最大Cs吸附量（q _m由Langmuir等温线模型计算得出的P-5N-BC的值为60.9 mg / g，比以前研究中其他吸附剂在1 h的吸附时间要高得多。P-5N-BC在24小时的解吸时间内的Cs解吸率<17％，表明Cs足够稳定地附着在HNO ₃处理的BC上，可长期使用。连续色谱柱实验的结果表明，与仅填充BC颗粒的色谱柱相比，装有P-5N-BC的色谱柱的处理水总量增加了9倍以上。在冲洗90个孔体积后，P-5N-BC的去除率保持在68％以上，这表明P-15N-BC仅15克（HNO ₃仅0.75克）处理过的BC）可以清洗5 L的被Cs污染的水（初始Cs浓度：1.0 mg / L；流出物浓度：<0.09 mg / L）。目前的结果表明，P-5N-BC具有从多种水系统中去除Cs的巨大潜力。