The use of biodegradable biopolymers such as cellulose as a suitable adsorbent, is a sustainable solution for the treatment of heavy metal contaminated waters. In this study, treated biomass (relatively pure cellulose) was obtained from agricultural wastes in a completely new and applicable method using ultrasonic. Then, the treated biomass was incorporated in alginate matrix and alginate/treated biomass bead was successfully fabricated via a facile glutaraldehyde cross-linking reaction and coagulation-solidification method. The prepared bead was characterized and used as an efficient biosorbent for lead removal from aqueous solutions. The maximum experimental adsorption capacity of the adsorbent was obtained 206.75 mg/g at C₀ = 210 mg/L, T =328 K, and pH = 5. The experimental kinetic and equilibrium data were well adjusted with pseudo-second-order kinetic and Freundlich isotherm models, respectively. The adsorption mechanism investigations illustrated that electrostatic interactions are responsible for metal ion adsorption and the rate-limiting step of the adsorption in the early stages was film diffusion.

使用可生物降解的生物聚合物（例如纤维素）作为合适的吸附剂，是用于处理重金属污染水的可持续解决方案。在这项研究中，处理后的生物质（相对较纯的纤维素）是使用超声波从农业废弃物中获得的一种全新且适用的方法。然后，将处理后的生物质掺入藻酸盐基质中，并且通过简便的戊二醛交联反应和凝结-凝固方法成功地制备了藻酸盐/处理过的生物质珠。表征所制备的珠粒，并将其用作从水溶液中去除铅的有效生物吸附剂。吸附剂在C _0时的最大实验吸附容量为206.75 mg / g = 210 mg / L，T = 328 K，pH =5。分别用伪二级动力学模型和Freundlich等温模型对实验动力学和平衡数据进行了很好的调整。吸附机理研究表明，静电相互作用是金属离子吸附的原因，早期吸附的限速步骤是膜扩散。