鱼骨吸附剂去除水中阴离子染料的工艺优化

IF 1.6 Q3 WATER RESOURCES
Md. Arafat Hossain, Plabon Islam Turzo, Md. Saidur Rahman Shakil, Fatema Tuj-Zohra
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引用次数: 0

摘要

摘要:本研究以罗氏Labeo鱼骨为原料制备生物吸附剂,用于去除阴离子染料Melioderm HF (High -牢度)Brown G (MHFB)。采用扫描电镜(SEM)和傅里叶变换红外光谱(FTIR)对鱼骨粉(FBP)吸附MHFB染料前后的形貌和化学成分进行了分析。通过批量实验,分析了初始染料浓度(100 ~ 250 mg/mL)、接触时间(5 ~ 180 min)、溶液pH(2.0 ~ 8.0)、吸附剂用量(1.0 ~ 3.5 g/L)等因素对染料吸附过程的影响。通过批量实验考察了pH、吸附剂用量、接触时间和染料初始浓度等不同操作变量的影响,发现在常温(298 K)下,2、2 g/L、120 min和200 ppm对染料去除率最高(98.33%)。等温线模型表明,染料分子在多层膜中呈非均匀吸附,符合Freundlich等温线(R2 = 0.9300)。数据拟合为准二级动力学。因此,罗氏乳杆菌鱼骨可以作为生物吸附剂,以最低的成本去除制革废水中的阴离子染料。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Process optimization of anionic dye (Melioderm HF Brown G) removal from aqueous solution utilizing adsorbent prepared from Labeo rohita fishbone
Abstract In this study, the prepared bio-adsorbents from Labeo rohita fishbones were used to remove the anionic acid dye Melioderm HF (High Fastness) Brown G (MHFB) from the aqueous solution. Scanning electron microscopy (SEM) and Fourier-transform infrared spectroscopy (FTIR) were used to analyze the morphology and chemical composition of fishbone powder (FBP) before and after MHFB dye adsorption. In a batch experiment, factors such as initial dye concentration (100–250 mg/mL), contact time (5–180 min), pH of the solution (2.0–8.0), and the adsorbent dosage (1.0–3.5 g/L) were analyzed for their impact on the dye adsorption process. The batch experiments were studied to evaluate the influence of different operational variables such as pH, adsorbent dosage, contact time, and initial concentration of dye and were found optimum at 2, 2 g/L, 120 min, and 200 ppm, respectively, for maximum dye removal (98.33%) at ambient temperature (298 K). The isotherm models demonstrated that dye molecules were adsorbed heterogeneously in multilayer following the Freundlich isotherm (R2 = 0.9300). The data were fitted for pseudo-second-order kinetics. Thus, L. rohita fishbone could be used as a bio-adsorbent to remove anionic dye from tannery effluents at a minimal cost.
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来源期刊
CiteScore
2.30
自引率
6.20%
发文量
136
审稿时长
14 weeks
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