In this research experiment, the potential of chitosan nanowires for the removal of cationic dyes which were Methylene Blue (MB) and Reactive Red l41 (RR-141) from wastewater was investigated. Chitosan powder was prepared from shrimp shells, then, chitosan nanowires were synthesized with the ionic gelation method, using sodium tripolyphosphate as a crosslinking agent under mild conditions. The appearance of functional groups of pure chitosan nanowires, together with 81% degree of acetylation and 110.2 m² g⁻¹, were achieved. TEM image revealed the incorporation of dye within the chitosan structures. The adsorption capacity was affected significantly by the amount of chitosan present, contact time, pH and dye concentration. The highest removal rates of MB and RR-141 were 91.5% and 82.74% respectively, within 60 min with dye solution of 75 mg L⁻¹ at pH 4 and 10 g chitosan, and the uptake capacity remained around 82.3–91.5% for 3 regeneration cycles. The adsorption isotherm correlated well with Langmuir and the Freundlich isotherms. Therefore, eco-friendly bio-chitosan could be applied successfully for dye contaminated wastewater remediation. Rather than a lab scale, further commercial process should be applied for higher effective performances.

在这项研究实验中，研究了壳聚糖纳米线清除废水中亚甲基蓝（MB）和活性红41（RR-141）等阳离子染料的潜力。由虾壳制备壳聚糖粉，然后在温和条件下，以三聚磷酸钠为交联剂，通过离子凝胶法合成壳聚糖纳米线。纯壳聚糖纳米线的官能团的出现，以及81％的乙酰化程度和110.2 m ²  g ^{- 1}，实现了。TEM图像揭示了在壳聚糖结构内染料的掺入。吸附能力受到壳聚糖存在量，接触时间，pH和染料浓度的显着影响。MB和RR-141的最高去除率分别为91.5％和82.74分别％，在60分钟内用75毫克的L染料溶液^{- 1}，在pH 4和10克脱乙酰壳多糖，并且吸收能力保持在约82.3-91.5％，持续3再生周期。吸附等温线与Langmuir和Freundlich等温线密切相关。因此，生态友好型生物壳聚糖可成功应用于染料污染的废水修复。而不是实验室规模，应采用进一步的商业流程以获得更高的有效性能。