Christian-Robinson Sachel, Kerton Francesca M
Department of Chemistry, Core Science Facility, Memorial University of Newfoundland, 45 Arctic Ave, A1C 5S7 St. John's, NL, Canada.
Pure Appl Chem. 2024 Apr 30;96(9):1247-1255. doi: 10.1515/pac-2024-0209. eCollection 2024 Sep.
Many of the United Nations' Sustainable Development Goals (SDGs) can be addressed through chemistry. Researchers at Memorial University of Newfoundland, Canada, have been sharing their stories on September 25 for the past two years through the Global Conversation on Sustainability. This article describes the details of one of these stories. As the global population increases, food production including aquaculture is increasing to provide for this. At the same time, this means more waste is produced. Waste from aquaculture is often overlooked as a source of valuable chemicals. By-products from farming blue mussels () is dominated by shells rich in calcite. A 'soft' calcite material prepared from waste mussels, via a combination of heat and acetic acid treatment, was investigated for its adsorptive properties and its possible use in wastewater remediation. The adsorption of two cationic dyes, methylene blue and safranin-O, on this material were evaluated through isothermal and kinetic modelling. The adsorption systems for both methylene blue and safranin-O can best be described using Langmuir isotherms and the respective adsorption capacities were 1.81 and 1.51 mg/g. The adsorption process was dominated by pseudo-second order rate kinetics. Comparisons are made with other mollusc-derived materials reported to date.
联合国的许多可持续发展目标都可以通过化学来实现。在过去两年里，加拿大纽芬兰纪念大学的研究人员一直在9月25日通过全球可持续发展对话分享他们的故事。本文描述了其中一个故事的细节。随着全球人口的增加，包括水产养殖在内的粮食产量也在增加以满足需求。与此同时，这意味着产生了更多的废物。水产养殖产生的废物常常被忽视，而实际上它是有价值化学品的来源。养殖蓝贻贝产生的副产品主要是富含方解石的贝壳。通过热和醋酸处理相结合的方法，由废弃贻贝制备了一种“软质”方解石材料，并对其吸附性能及其在废水处理中的可能用途进行了研究。通过等温线和动力学模型评估了两种阳离子染料亚甲基蓝和番红O在该材料上的吸附情况。亚甲基蓝和番红O的吸附系统用朗缪尔等温线能得到最佳描述，各自的吸附容量分别为1.81和1.51毫克/克。吸附过程以伪二级速率动力学为主。文中还与迄今为止报道的其他软体动物衍生材料进行了比较。
