Mahmood Hina, Mahmood Farzana
Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, 60000, Pakistan.
Heliyon. 2023 Mar 10;9(3):e14295. doi: 10.1016/j.heliyon.2023.e14295. eCollection 2023 Mar.
Due to the use of non-recyclable materials and the high costs of the technologies, removal of dyes from wastewater is becoming more and more pricey. This paper presents the capacity of (FB) leaf powder to eradicate methyl violet dye 10 B (MV) in an aqueous fluid. The surface characteristics and presence of various functional groups on the surface of sorbent were revealed by SEM and FTIR studies. Diverse constraints on the elimination of methyl violet 10 B in an aqueous environment were also studied, including starting dye concentration, temperature, and contact duration. The Elovich & liquid film diffusion models, along with Lagergren first-order, pseudo-second-order, Bangham, and modified Freundlich modeling operated to assess kinetics. Experiments confirmed the pseudo-second-order concept. To investigate tentative data, multiple linear Langmuir, Freundlich, Temkin, as well as two parameters nonlinear isotherm models were applied, with findings indicating that sorption data were like both linear and non-linear isotherms. Sorption data were found to be in excellent agreement with the Freundlich isotherm with R value (0.99). The sorption capacity of the sorbent was computed i.e. 312.2 mg/g. Thermodynamic characteristics were also computed. It was concluded that the sorption of methyl violet 10 B sorption on FB leaf powder is exothermic. Hence, it is a potentially cost-effective bio sorbent for exclusion of dye from wastewater.
由于使用不可回收材料以及技术成本高昂，从废水中去除染料的成本越来越高。本文介绍了（FB）叶粉在水性流体中去除甲基紫染料10 B（MV）的能力。通过扫描电子显微镜（SEM）和傅里叶变换红外光谱（FTIR）研究揭示了吸附剂表面的特征和各种官能团的存在。还研究了在水环境中去除甲基紫10 B的各种限制因素，包括起始染料浓度、温度和接触时间。采用埃洛维奇模型和液膜扩散模型，以及 Lagergren一级、伪二级、班汉姆和修正弗伦德利希模型来评估动力学。实验证实了伪二级概念。为了研究试验数据，应用了多重线性朗缪尔、弗伦德利希、坦金以及双参数非线性等温线模型，结果表明吸附数据既符合线性等温线也符合非线性等温线。发现吸附数据与弗伦德利希等温线高度吻合，R值为0.99。计算了吸附剂的吸附容量，即312.2 mg/g。还计算了热力学特征。得出结论，FB叶粉对甲基紫10 B的吸附是放热的。因此，它是一种从废水中去除染料的潜在经济高效的生物吸附剂。
