Key Laboratory of Clay Mineral Applied Research of Gansu Province, Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Key Laboratory of Clay Mineral Applied Research of Gansu Province, Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China; Center of Xuyi Palygorskite Applied Technology, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Xuyi 211700, China.
J Environ Sci (China). 2019 Jan;75:346-358. doi: 10.1016/j.jes.2018.05.014. Epub 2018 May 24.
The utilization of waste products as valuable materials was a technical imperative for waste management. In this study, the cost-effective attapulgite/carbon (APT/C) composite was developed for wastewater treatment using waste hot-pot oil as a carbon precursor through a facile one-step calcination process. The APT/C composite prepared at 300°C exhibited the excellent adsorption capacity and rapid equilibrium rate over a broad pH range for the removal of various pollutants. More importantly, the removal ratios of the composites toward Methyl Violet and tetracycline still remained 77.6% and 60.2% of the initial adsorption capacity after ten adsorption-regeneration cycles via a facile thermal regeneration strategy, respectively. Beyond all doubt, this research provided a feasible and economical way for the sustainable utilization of waste hot-pot oil in wastewater treatment, achieving the concept of disposal waste with waste and recycling.
将废物作为有价值的材料加以利用是废物管理的一项技术要求。在这项研究中，以废火锅油为碳前驱体，通过简便的一步煅烧法制备了具有成本效益的凹凸棒土/碳（APT/C）复合材料，用于废水处理。在 300°C 下制备的 APT/C 复合材料在很宽的 pH 范围内对各种污染物具有优异的吸附容量和快速的平衡速率。更重要的是，通过简便的热再生策略，在十个吸附-再生循环后，复合材料对甲基紫和四环素的去除率仍分别保持初始吸附容量的 77.6%和 60.2%。毫无疑问，这项研究为在废水处理中可持续利用废火锅油提供了一种可行且经济的方法，实现了以废治废和循环利用的理念。
