本研究旨在使用环保型海藻Corallina officinalis作为吸附剂，从工业废水中去除有害的孔雀石绿染料，推动可持续发展和有效抑制微生物生长。对Corallina officinalis生物量进行了纺织染料生物吸附、抗菌、抗氧化和细胞毒性性质的测试。研究了一定参数（溶液pH值、初始染料浓度、藻类剂量和接触时间）对染料吸附的影响。同时采用傅里叶变换红外光谱和扫描电子显微镜进行了研究，结果显示藻类表面功能团在生物吸附过程中起重要作用。动力学数据表明，拟二阶模型与相关系数[Formula: see text]值显著，平均为0.95232。生物吸附与Freundlich（R2 = 0.9843）和Langmuir（R2 = 0.9653）等温线符合良好，染料的最大去除效率在2小时、27摄氏度、搅拌速度120转/分、pH值6、初始染料浓度20毫克/升和生物质剂量0.03克/升时可达到99.9%。Corallina officinalis具有较高的抗菌活性，最低抑菌浓度范围从0.156到5毫克/毫升。Corallina officinalis对测试的自由基表现出显著的自由基清除活性。用九种癌细胞株检测了提取物的细胞毒性活性，对结肠腺癌表现出高毒性，IC50值为25.895微克/毫升。© 2023. Springer Nature Limited.

This research aims to use eco-friendly Corallina officinalis as an adsorbent for removing harmful malachite green dye streams from industrial effluent, promoting sustainable living and effective microbial growth inhibition. Corallina officinalis biomass was tested for textile dye biosorption, as well as its antibacterial, antioxidant, and cytotoxic properties. The effects of certain parameters, involving pH solution, initial dye concentration, algae dose, and contact time, were investigated on the sorption of dye. Fourier transform infrared spectroscopy and scanning electron microscopy were also used and, the results showed that the functional groups on the surface of algae played an important part in the biosorption process. It was noted that the kinetic data were significantly prominent by the Pseudo-second-order model with regression correlation coefficient [Formula: see text] values with an average of 0.95232. The biosorption was compatible with both the Freundlich (R2 = 0.9843), and Langmuir (R2 = 0.9653) isotherms, and the maximum removal efficiency for dye reached up to 99.9% in 2 h, 27 °C, stirring speed 120 rpm, pH 6, initial dye concentration 20 mg L-1, and biomass dose 0.03 g L-1. Corallina officinalis had higher antimicrobial activity, with values of minimum inhibitory concentrations ranging from 0.156 to 5 mg mL-1. Corallina officinalis exerted significant radical scavenging activity against tested free radicals. The extract was examined for cytotoxic activity using nine cancer cell lines, which exhibited high cytotoxicity for colon adenocarcinoma with an IC50 value of 25.895 µg mL-1.© 2023. Springer Nature Limited.