Elessawy Noha A, Alhamzani Abdulrahman G, Abou-Krisha Mortaga M, Aljlil Saad
Computer Based Engineering Applications Department, Inform Research Institute Alexandria Egypt
Chemistry Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU) Riyadh 11623 Saudi Arabia.
RSC Adv. 2024 Aug 5;14(34):24373-24383. doi: 10.1039/d4ra02111h.
Although climate change poses a threat to the future of the world, we still have time to adapt and lessen its effects. However, the incineration of polymeric waste materials has increased the release of carbon-containing gases called greenhouse gases (GHGs) and tiny particles called 'black carbon', leading to global warming, which is the cause of the worst environmental crisis in history. Flexography is an advanced printing technique and is widely used in the packaging industry as well as in the printing of various functional films and coatings. In general, the polymeric waste produced from this industry poses a grave environmentally sustainable problem; thus, due to the fact that this waste's primary component is carbon, it has attracted our attention towards converting it into carbon-based value-added products such as graphene, which can be used in water treatment processes. The prepared material was tested as a potential coated film in a batch adsorption system for the removal of lead (Pb) and methylene blue (MB) after being supported on poly(vinyl alcohol) (PVA) film. Furthermore, contact time, solution pH, and starting pollutant concentrations were studied and used in the response surface methodology (RSM) model for optimization. The adsorption kinetics were more clearly depicted by the pseudo-second-order kinetic model. To meet the objectives of waste management and water treatment, waste-derived materials can be used in wastewater treatment, based on the "wastes-treat-wastes" approach.
尽管气候变化对世界的未来构成威胁，但我们仍有时间去适应并减轻其影响。然而，聚合物废料的焚烧增加了被称为温室气体（GHGs）的含碳气体以及被称为“黑碳”的微小颗粒的排放，导致了全球变暖，而全球变暖正是历史上最严重环境危机的成因。苯胺印刷术是一种先进的印刷技术，广泛应用于包装行业以及各种功能薄膜和涂层的印刷。一般来说，该行业产生的聚合物废料带来了严重的环境可持续性问题；因此，鉴于这种废料的主要成分是碳，它引发了我们将其转化为石墨烯等碳基增值产品的关注，这些产品可用于水处理过程。所制备的材料在负载于聚乙烯醇（PVA）薄膜上后，作为一种潜在的涂膜在间歇吸附系统中用于去除铅（Pb）和亚甲基蓝（MB）进行了测试。此外，研究了接触时间、溶液pH值和初始污染物浓度，并将其用于响应面法（RSM）模型进行优化。吸附动力学由准二级动力学模型能更清晰地描述。为实现废物管理和水处理的目标，基于“以废治废”的方法，废料衍生材料可用于废水处理。
