Wood-based sorbents chemically modified by Al₂O₃ (WB–Al₂O₃) were synthesized via solvo-reaction method. The wood residue, a waste material with lignocellulosic structure, was obtained from Quercus robur (oak tree). WB–Al₂O₃ sorbents were tested for removal of Reactive Blue 19 (RB19) dye. The influence of solvents with different polarity and protic/aprotic nature used in the sorbent synthesis, such as acetone, ethanol, ether, hexane, and methanol, were investigated and the best sorbent capable to remove the highest percentage of dye was determined. To investigate the reason for difference between dye removal efficiency of the synthesized sorbents, the appropriate characterization of the sorbents was done. The highest dye removal efficiency (100%) and the shortest equilibrium time (less than 10 min) were achieved for the WB–Al₂O₃ sorbent synthesized in less polar solvent — hexane. The sorption kinetics can be described by the pseudo-second-order model. The equilibrium examination showed that the Langmuir model better explained sorption process and the maximal capacity of the WB–Al₂O₃ was 441.90 mg/g. The present research shows that usage of nature lignocellulosic polymers in the synthesis of the low economically cost sorbents can effectively decrease the water pollution and increase the reusability of wood biowaste.

通过溶剂反应法合成了由 Al ₂ O ₃ (WB–Al ₂ O ₃ )化学改性的木基吸附剂。木材残留物是一种具有木质纤维素结构的废料，来自Quercus robur（橡树）。WB-Al ₂ O ₃测试吸附剂去除活性蓝 19 (RB19) 染料。研究了在吸附剂合成中使用的具有不同极性和质子/非质子性质的溶剂，如丙酮、乙醇、乙醚、己烷和甲醇的影响，并确定了能够去除最高百分比染料的最佳吸附剂。为了研究合成吸附剂的染料去除效率差异的原因，对吸附剂进行了适当的表征。WB–Al ₂ O ₃实现了最高的染料去除效率（100%）和最短的平衡时间（小于 10 分钟）在极性较小的溶剂 - 己烷中合成的吸附剂。吸附动力学可以用拟二级模型来描述。平衡检验表明朗缪尔模型更好地解释了吸附过程，WB-Al ₂ O ₃的最大容量为441.90 mg/g。目前的研究表明，使用天然木质纤维素聚合物合成经济成本低的吸附剂，可以有效减少水污染，提高木材生物废物的可再利用性。