Department of Biology, College of Science and Humanities, Prince Sattam bin Abdul Aziz University, Alkharj, Saudi Arabia.
Department of Zoology, Faculty of Science, Suez Canal University, Ismailia, Egypt.
PLoS One. 2024 Oct 11;19(10):e0309552. doi: 10.1371/journal.pone.0309552. eCollection 2024.
High effective low-cost substance derived from agriculture-based waste towards a circular economy concept showed a significant green approach for pharmaceuticals uptake in aqueous solution. Beachwood sawdust was used as the source of cellulose based adsorbents. Cellulose is isolated from the waste and in parallel magnetite nanoparticles are prepared by the simple co-precipitation technique and the two substances are mixed in various proportions to be acetaminophen adsorbent. Characteristics of the prepared magnetite (M)/sawdust (SD) composite in various proportions (M:SD (1:1), M:SD (1:2), M:SD (1:3), M:SD (1:5) and M:SD (2:1) were assessed using scanning electron microscope (SEM) transmission electron microscope (TEM) and X-ray diffractometer (XRD) which revealed the presence magnetite and cellulose. Also, for the object of recoverable adsorbent, vibrating sample magnetometer (VSM) of the adsorbent is investigated to evaluate its sustainability. The highest removal rate was associated with M:SD (1:2) compared to the other composites and the pristine magnetite or sawdust materials within 2 hours of isotherm time. The adsorption parameters are optimized and the maximal yield is attained at pH (7.0), adsorbent dose of 2.0 g/L at room temperature. The adsorption matrix is following Langmuir model and fitted to the second-order kinetic model. The process is exothermic in nature and highlighted physisorption tendency. The highest monolayer adsorption uptake was investigated at 7.0 mg/g which corresponds to the M:SD (1:2) adsorbent.
从农业废弃物中提取的高效低成本物质,朝着循环经济的概念,为药物在水溶液中的吸收提供了一种显著的绿色方法。山核桃木屑被用作纤维素基吸附剂的来源。纤维素从废物中分离出来,同时通过简单的共沉淀技术制备出磁铁矿纳米粒子,并将这两种物质以不同的比例混合,制成对乙酰氨基酚吸附剂。用扫描电子显微镜 (SEM)、透射电子显微镜 (TEM) 和 X 射线衍射仪 (XRD) 评估了不同比例制备的磁铁矿 (M)/木屑 (SD) 复合材料的特性 (M:SD (1:1)、M:SD (1:2)、M:SD (1:3)、M:SD (1:5) 和 M:SD (2:1)),结果表明存在磁铁矿和纤维素。此外,为了研究可回收吸附剂,对吸附剂的振动样品磁强计 (VSM) 进行了研究,以评估其可持续性。与其他复合材料以及原始的磁铁矿或木屑材料相比,在等温时间为 2 小时内,M:SD (1:2)的去除率最高。优化了吸附参数,在 pH 值为 7.0、吸附剂用量为 2.0 g/L、室温下,达到了最大产率。吸附基质符合朗缪尔模型,并拟合到二级动力学模型。该过程本质上是放热的,并突出了物理吸附的趋势。在 7.0 mg/g 时,研究了最高的单层吸附量,这对应于 M:SD (1:2) 吸附剂。