Singh, VirendraGoswami, Rabina2024-11-292024-11-292023-08-01Academic Researchhttps://krishikosh.egranth.ac.in/handle/1/5810216740The growing human meddling in the environment and biodiversity is a major concern nowadays. Inconsiderate exploitation of water and other fundamental natural resources has led to widespread problems with water pollution and contamination. Numerous water contaminants, such as undesired metal and organic component particles such as dyes, are harmful to human health. As a result, a wastewater treatment process is required which must be efficient and cost effective. In the present research work, the effectiveness of functionalized zero-valent iron biochar composite (FZVIBC) and functionalized magnetic biochar composite (FMBC) were investigated as adsorbent materials for the removal of Methylene blue (MB) dye from its synthetic solution. The prepared nanoparticles, nanocomposites and synthetic solution of MB have been characterized using UV-Vis, XRD, Zeta sizer, FTIR probes. XRD analysis confirmed the proper synthesis of zero-valent iron and magnetite nanoparticles. The bonding nature of NPs, raw BC, FMBC, FZVIBC, and dye loaded FZVIBC, FMBC are determined by FTIR spectra. The intensity of characteristics peak of the carboxylic group was reduced in the dye loaded FZVIBC and FMBC compared to the IR peak in FZVIBC and FMBC sample. This is due to the interaction of carboxylate anion (-COO-) of carboxylic acid with the positively charged nitrogen atoms of MB dye. This IR study confirms the adsorption of MB dye onto the surface of FZVIBC and FMBC. The concentration of MB dye after the treatment and the maximum adsorption capacity (Qm) for FZVIBC and FMBC were calculated by UV-Vis spectra using Beer-Lamberts Law. adsorbent was able to remove Methylene Blue dye from water with an efficiency of almost 99% at 75 min of contact time with the maximum adsorption capacity of 151.97 mg/g. After studying adsorption isotherms, Langmuir adsorption isotherm suggested that the adsorption of MB dye onto the adsorbent materials through chemisorption. Pseudo Second Order Kinetic Model was also verified that the chemical reaction involving π-π interaction in removal of MB dye from wastewater. The results obtained from prepared samples showed that the FZVIBC is better adsorbent material over FMBC for removal of MB dye. (EnglishThesis