In this paper, a novel nanocomposite (carbonic salicylate @ aluminum oxide nanocomposite, AC-COO-Sal@Al₂O₃) and modifier carbon biosorbents were synthesized from low-cost raw materials (commercial activated carbon). Infrared spectra demonstrated the presence of several active groups in the material matrixes of nanocomposite and biosorbents. X-ray diffraction analysis showed that the surfaces were in the form of crystals embedded into the amorphous structure. There is good thermal stability up to 800 °C and also in acidic and alkaline mediums. The modifier of the activated carbon (AC), carbonic acid (AC-COOH), carbonic salicylate (MAC-COO-Sal), and the nanocomposite were applied to remove the hazard species from wastewater. The different parameters (pH, time, concentration, and temperature) were applied to explain the removal process. The removal percentages and capacities were 97–100% and 166–266 mg/g with a relative standard deviation of 0.2–0.8% (n = 5). The lower detection limit of the tested dye was 0.6–1.9 μg/L which indicates the higher sensitivity detection of methylene blue in wastewater. Also, the method was successfully applied for the removal of free chlorine and metal ions from the contaminated water samples.

本文提出了一种新型纳米复合材料（碳酸水杨酸盐@氧化铝纳米复合材料，AC-COO-Sal@Al ₂ O ₃）和改性碳生物吸附剂是由低成本原料（商业活性炭）合成的。红外光谱表明纳米复合材料和生物吸附剂的材料基质中存在几个活性基团。X射线衍射分析表明，表面呈嵌入非晶结构的晶体形式。在高达 800 °C 以及在酸性和碱性介质中具有良好的热稳定性。活性炭 (AC)、碳酸 (AC-COOH)、碳酸水杨酸盐 (MAC-COO-Sal) 和纳米复合材料的改性剂用于去除废水中的有害物质。应用不同的参数（pH、时间、浓度和温度）来解释去除过程。去除百分比和容量分别为 97-100% 和 166-266 mg/g，相对标准偏差为 0.2-0。8%（n = 5）。被测染料的检测下限为0.6-1.9 μg/L，表明废水中亚甲基蓝的检测灵敏度较高。此外，该方法成功地应用于去除污染水样中的游离氯和金属离子。