Response characteristic of fenaminosulf and Pb(II) on interactively modified moss peat

IF 4.1 3区地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY

Physics and Chemistry of the Earth Pub Date : 2025-10-01 DOI:10.1016/j.pce.2025.104121

Siyu Ye , Bin Zhu , Hongyan Deng , Abbas Touqeer , Wenbin Li

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引用次数: 0

Abstract

In the present study, extracts (E) from Portulaca oleracea, dimethyl dodecyl betaine (D), and sodium alginate (S) were utilized for single, binary, and ternary modifications on the surface of moss peat (MP). The microscopic morphology of the interactively modified MPs was studied using various testing methods. A batch method was employed to investigate the thermodynamic and kinetic characteristics of fenaminosulf (FMF) and Pb(II) adsorption on the tested materials, and the effects of pH, temperature, and ionic strength on adsorption were compared. The modifications of E, D, and S altered the physicochemical properties and introduced functional groups onto the MP. The adsorption behavior of FMF and Pb(II) was better described by the Henry and Langmuir models, respectively. The adsorption capacities of FMF and Pb(II) were all in the order of ternary > binary > single modification. Raising the pH level was advantageous for Pb(II) adsorption but not favorable for FMF adsorption. The adsorption capacity for both FMF and Pb(II) initially increased and subsequently decreased as ionic strength rose. The adsorption of FMF and Pb(II) onto various modified MPs increased with higher temperatures, and the process was spontaneous, endothermic, and resulted in an increase in entropy, aligning with the pseudo-first-order kinetic model.

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磺胺砜和铅（II）对交互改性苔藓泥炭的响应特性

本研究利用马蹄苋提取物(E)、二甲基十二烷基甜菜碱(D)和海藻酸钠(S)在苔藓泥炭（MP）表面进行单、二、三元改性。采用各种测试方法研究了相互作用改性MPs的微观形貌。采用批处理法研究了FMF和Pb（II）在被试材料上的吸附热力学和动力学特性，并比较了pH、温度和离子强度对吸附的影响。E、D和S的修饰改变了MP的理化性质，并在MP上引入了官能团。Henry和Langmuir模型分别较好地描述了FMF和Pb（II）的吸附行为。FMF和Pb（II）的吸附量均为三元&二元&单改性。提高pH有利于Pb（II）的吸附，但不利于FMF的吸附。随着离子强度的升高，对FMF和Pb（II）的吸附量先增大后减小。不同改性MPs对FMF和Pb（II）的吸附随温度升高而增加，吸附过程为自发的吸热过程，且熵增大，符合准一级动力学模型。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physics and Chemistry of the Earth 地学-地球科学综合

CiteScore

5.40

自引率

2.70%

发文量

176

审稿时长

31.6 weeks

期刊介绍： Physics and Chemistry of the Earth is an international interdisciplinary journal for the rapid publication of collections of refereed communications in separate thematic issues, either stemming from scientific meetings, or, especially compiled for the occasion. There is no restriction on the length of articles published in the journal. Physics and Chemistry of the Earth incorporates the separate Parts A, B and C which existed until the end of 2001. Please note: the Editors are unable to consider submissions that are not invited or linked to a thematic issue. Please do not submit unsolicited papers. The journal covers the following subject areas: -Solid Earth and Geodesy: (geology, geochemistry, tectonophysics, seismology, volcanology, palaeomagnetism and rock magnetism, electromagnetism and potential fields, marine and environmental geosciences as well as geodesy). -Hydrology, Oceans and Atmosphere: (hydrology and water resources research, engineering and management, oceanography and oceanic chemistry, shelf, sea, lake and river sciences, meteorology and atmospheric sciences incl. chemistry as well as climatology and glaciology). -Solar-Terrestrial and Planetary Science: (solar, heliospheric and solar-planetary sciences, geology, geophysics and atmospheric sciences of planets, satellites and small bodies as well as cosmochemistry and exobiology).