Alkas Taufiq Rinda, Purnomo Adi Setyo, Ediati Ratna, Ersam Taslim
Departement of Environment Management, Politeknik Pertanian Negeri Samarinda Samarinda 75131 Indonesia.
Department of Chemistry, Institut Teknologi Sepuluh Nopember (ITS) Surabaya 60111 Indonesia
RSC Adv. 2023 Oct 20;13(44):30885-30897. doi: 10.1039/d3ra03804a. eCollection 2023 Oct 18.
This study aimed to investigate immobilized metal-organic framework (MOF) UiO-66 and brown-rot fungus (GT) in PVA-SA matrices for adsorption and decolorization of reactive black 5 (RB5). Furthermore, UiO-66/GT@PVA-SA composite was successfully fabricated and obtained by immobilizing UiO-66 and GT mycelia into a mixture of PVA-SA. This composite demonstrated a decolorization ability of 80.12% for RB5 after 7 days. The composite's reusability was assessed for three cycles; at last, it only achieved 21%. This study reported that adsorption of RB5 by the composite followed a pseudo-second-order kinetic model with a correlation coefficient () of 0.9997. The Freundlich model was found to be suitable for the isotherm adsorption. The process was also spontaneous and feasible, as indicated by the negative Δ value. Subsequently, four metabolite products resulting from decolorization of RB5 by UiO-66/GT@PVA-SA composite were proposed, namely: CHNNaOS ( = 762), CHNOS ( = 353), CHNOS ( = 384), and CHOS ( = 325).
本研究旨在探究固定在聚乙烯醇-海藻酸钠(PVA-SA)基质中的金属有机框架(MOF)UiO-66和褐腐真菌(GT)对活性黑5(RB5)的吸附及脱色性能。此外,通过将UiO-66和GT菌丝体固定于PVA-SA混合物中,成功制备出UiO-66/GT@PVA-SA复合材料。该复合材料在7天后对RB5的脱色能力达80.12%。对该复合材料的可重复使用性进行了三个循环的评估;最终,其仅达到21%。本研究报告称,该复合材料对RB5的吸附遵循伪二级动力学模型,相关系数()为0.9997。发现Freundlich模型适用于等温吸附。如负的Δ值所示,该过程也是自发且可行的。随后,提出了UiO-66/GT@PVA-SA复合材料对RB5脱色产生的四种代谢产物,即:CHNNaOS( = 762)、CHNOS( = 353)、CHNOS( = 384)和CHOS( = 325)。