Ngamsurach Pimploy, Praipipat Pornsawai
Department of Environmental Science, Khon Kaen University, Khon Kaen 40002, Thailand.
Environmental Applications of Recycled and Natural Materials (EARN) Laboratory, Khon Kaen University, Khon Kaen 40002, Thailand.
ACS Omega. 2021 Nov 18;6(47):32215-32230. doi: 10.1021/acsomega.1c05056. eCollection 2021 Nov 30.
Bacteria contaminations in water are concerned as environmental effects including human health, so water treatment is required before use. Although using extracted plant is interesting because of their good chemical compounds for bacterial inhibitions, no study has applied the extracted plant in bead materials for disinfection in wastewater. The current research attempted to extract and for the synthesis of beads (CFB) and beads (POB), and their antibacterial efficiencies were investigated by agar diffusion tests, antibacterial batch tests, adsorption isotherm and kinetics, and material reusability. and leaves were ethanol-extracted, and their bead materials (CFB and POB) were synthesized. Furthermore, their characterizations of surface area, chemical compositions, and chemical functional groups were investigated. For field emission scanning electron microscopy and focused ion beam (FESEM-FIB) analysis, CFB and POB had spherical shapes with coarse surfaces. Energy-dispersive X-ray spectrometry (EDX) analysis of CFB and POB illustrated five main chemical compositions, which were carbon (C), oxygen (O), calcium (Ca), chlorine (Cl), and sodium (Na), whereas Fourier transform infrared (FTIR) spectroscopy analysis identified seven main chemical functional groups, which were O-H, C-H, C=O, C=C, N-H, C-O, and C-Cl. Agar diffusion tests confirmed the abilities of CFB and POB to inhibit both and , and batch experiments examined high antibacterial efficiencies of CFB of almost 100% on both bacterial types. The adsorption isotherm of CFB corresponded to the Freundlich model, which is related to the physiochemical adsorption process with multilayer or heterogeneous adsorption, and the adsorption kinetics of CFB was correlated to the pseudo-second-order kinetic model, which involved chemisorption relating to physiochemical interaction. Moreover, the desorption experiment confirmed the reusability of CFB. Therefore, CFB is a potential material to possibly apply for disinfection of wastewater.
水中的细菌污染被视为包括对人类健康在内的环境影响，因此在使用前需要进行水处理。尽管使用提取的植物很有意义，因为它们含有用于抑制细菌的良好化合物，但尚未有研究将提取的植物应用于珠子材料中用于废水消毒。当前的研究试图提取[具体物质1]和[具体物质2]用于合成[珠子类型1]珠子（CFB）和[珠子类型2]珠子（POB），并通过琼脂扩散试验、抗菌批量试验、吸附等温线和动力学以及材料可重复使用性来研究它们的抗菌效率。[植物名称1]和[植物名称2]叶子用乙醇提取，并合成了它们的珠子材料（CFB和POB）。此外，还研究了它们的表面积、化学成分和化学官能团的特性。对于场发射扫描电子显微镜和聚焦离子束（FESEM-FIB）分析，CFB和POB呈球形，表面粗糙。对CFB和POB的能量色散X射线能谱（EDX）分析表明有五种主要化学成分，即碳（C）、氧（O）、钙（Ca）、氯（Cl）和钠（Na），而傅里叶变换红外（FTIR）光谱分析确定了七种主要化学官能团，即O-H、C-H、C=O、C=C、N-H、C-O和C-Cl。琼脂扩散试验证实了CFB和POB抑制[细菌类型1]和[细菌类型2]的能力，批量实验检测到CFB对两种细菌类型的抗菌效率几乎都高达100%。CFB的吸附等温线符合弗伦德利希模型，该模型与多层或非均相吸附的物理化学吸附过程有关，CFB的吸附动力学与准二级动力学模型相关，该模型涉及与物理化学相互作用有关的化学吸附。此外，解吸实验证实了CFB的可重复使用性。因此，CFB是一种有可能用于废水消毒的潜在材料。
