In this work, simultaneous biosorption of As(III) and As(V) by Sargassum glaucescens was optimized using multiple response optimizations and Doehlert experimental design. The optimum condition for simultaneous biosorption of As(III) and As(V) were: biosorbent dosage 0.47 g L⁻¹, pH 5.9 and initial concentration 120.34 mg L⁻¹ with maximum overall desirability of 0.94. Different isotherms were fitted to biosorption equilibrium data and the Freundlich isotherm was the most suitable model. Based on thermodynamic study, the biosorption of arsenic species onto alga was endothermic and spontaneous. Kinetic results indicated that intraparticle diffusion model was the best kinetic model. Biosorption capacity of S. glaucescens and other biosorbents were also compared.

在这项工作中，利用多重响应优化和 Doehlert 实验设计，优化了马尾藻对 As(III) 和 As(V) 的同时生物吸附。同时生物吸附As(III)和As(V)的最佳条件为：生物吸附剂用量0.47 g L ^-1 ，pH 5.9，初始浓度120.34 mg L ^-1 ，最大总体期望值为0.94。不同的等温线适合生物吸附平衡数据，Freundlich 等温线是最合适的模型。根据热力学研究，藻类对砷的生物吸附是吸热且自发的。动力学结果表明颗粒内扩散模型是最好的动力学模型。还比较了青霞草和其他生物吸附剂的生物吸附能力。