枣壳活性炭对亚甲基蓝的高效间歇吸附:表征及响应面法优化

IF 3 4区 环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES
Mosaab A. Elbager, Hamza. A. Asmaly, Mohammad Al-Suwaiyan, Ahmed I. Ibrahim, Hatim Dafallah
{"title":"枣壳活性炭对亚甲基蓝的高效间歇吸附:表征及响应面法优化","authors":"Mosaab A. Elbager,&nbsp;Hamza. A. Asmaly,&nbsp;Mohammad Al-Suwaiyan,&nbsp;Ahmed I. Ibrahim,&nbsp;Hatim Dafallah","doi":"10.1007/s11270-025-07880-9","DOIUrl":null,"url":null,"abstract":"<div><p>This study explores the development of activated carbon from Desert Date Seed Shells (DDSSAC) for methylene blue removal. The activated carbon was synthesized using an innovative preparation method involving chemical activation with potassium hydroxide (KOH), carbonization at an unprecedented high temperature of 850 °C, and a controlled argon atmosphere. This method resulted in a remarkable BET surface area of 2768 m<sup>2</sup>/g, the highest reported for biomass-derived activated carbon. The TGA, XRD, SEM, and FTIR analyses demonstrated that the activated carbon exhibits high thermal stability, an amorphous carbon structure, a complex porous texture, and the presence of oxygenated functional groups and aromatic structures, respectively. The adsorption process was optimized using response surface methodology coupled with central composite design by studying the effect of adsorbent weight (3, 5, 7) mg, pH of the solution (4, 7, 10), and initial methylene blue concentration (100, 200, 300) mg/L. The fitted model, an inverse square root transformed reduced quadratic model, exhibited excellent predictive accuracy, as indicated by a high R<sup>2</sup> value of 0.9932. The RSM study showed that the adsorption capacity increased with the decrease in adsorbent weight and the increase in the pH of the solution and methylene blue (MB) concentration. The maximum adsorption capacity was 1684 mg/g, which was achieved at an adsorbent weight of 3 mg, pH of 10, and MB concentration of 300 mg/L due to enhanced electrostatic attraction at high pH, efficient utilization of active sites with low adsorbent weight, and a strong mass transfer driving force at higher dye concentration. The kinetic analysis showed that the Elovich model (R<sup>2</sup> = 0.9946) best described the adsorption process, indicating a rapid initial adsorption phase followed by gradual site saturation. The isotherm study revealed that the Temkin model provided the best fit (R<sup>2</sup> = 0.8994), highlighting uniform heat distribution and consistent interactions between the adsorbent and methylene blue molecules. The maximum Langmuir adsorption capacity of DDSSAC was 716 mg/g, outperforming other activated carbons derived from agricultural waste referring to hydrogen bonding, π–π stacking, hydrophobic interactions, and electrostatic attraction between MB and the carbon surface. These findings establish desert date seed shells activated carbon as a highly effective and eco-friendly adsorbent for methylene blue removal.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 4","pages":""},"PeriodicalIF":3.0000,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"High Performance Batch Adsorption of Methylene Blue Using Desert Date Seed Shell Activated Carbon: Characterization and Response Surface Methodology Optimization\",\"authors\":\"Mosaab A. Elbager,&nbsp;Hamza. A. Asmaly,&nbsp;Mohammad Al-Suwaiyan,&nbsp;Ahmed I. Ibrahim,&nbsp;Hatim Dafallah\",\"doi\":\"10.1007/s11270-025-07880-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This study explores the development of activated carbon from Desert Date Seed Shells (DDSSAC) for methylene blue removal. The activated carbon was synthesized using an innovative preparation method involving chemical activation with potassium hydroxide (KOH), carbonization at an unprecedented high temperature of 850 °C, and a controlled argon atmosphere. This method resulted in a remarkable BET surface area of 2768 m<sup>2</sup>/g, the highest reported for biomass-derived activated carbon. The TGA, XRD, SEM, and FTIR analyses demonstrated that the activated carbon exhibits high thermal stability, an amorphous carbon structure, a complex porous texture, and the presence of oxygenated functional groups and aromatic structures, respectively. The adsorption process was optimized using response surface methodology coupled with central composite design by studying the effect of adsorbent weight (3, 5, 7) mg, pH of the solution (4, 7, 10), and initial methylene blue concentration (100, 200, 300) mg/L. The fitted model, an inverse square root transformed reduced quadratic model, exhibited excellent predictive accuracy, as indicated by a high R<sup>2</sup> value of 0.9932. The RSM study showed that the adsorption capacity increased with the decrease in adsorbent weight and the increase in the pH of the solution and methylene blue (MB) concentration. The maximum adsorption capacity was 1684 mg/g, which was achieved at an adsorbent weight of 3 mg, pH of 10, and MB concentration of 300 mg/L due to enhanced electrostatic attraction at high pH, efficient utilization of active sites with low adsorbent weight, and a strong mass transfer driving force at higher dye concentration. The kinetic analysis showed that the Elovich model (R<sup>2</sup> = 0.9946) best described the adsorption process, indicating a rapid initial adsorption phase followed by gradual site saturation. The isotherm study revealed that the Temkin model provided the best fit (R<sup>2</sup> = 0.8994), highlighting uniform heat distribution and consistent interactions between the adsorbent and methylene blue molecules. The maximum Langmuir adsorption capacity of DDSSAC was 716 mg/g, outperforming other activated carbons derived from agricultural waste referring to hydrogen bonding, π–π stacking, hydrophobic interactions, and electrostatic attraction between MB and the carbon surface. These findings establish desert date seed shells activated carbon as a highly effective and eco-friendly adsorbent for methylene blue removal.</p></div>\",\"PeriodicalId\":808,\"journal\":{\"name\":\"Water, Air, & Soil Pollution\",\"volume\":\"236 4\",\"pages\":\"\"},\"PeriodicalIF\":3.0000,\"publicationDate\":\"2025-03-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Water, Air, & Soil Pollution\",\"FirstCategoryId\":\"6\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11270-025-07880-9\",\"RegionNum\":4,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Water, Air, & Soil Pollution","FirstCategoryId":"6","ListUrlMain":"https://link.springer.com/article/10.1007/s11270-025-07880-9","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0

摘要

研究了以大枣壳为原料制备去除亚甲基蓝的活性炭。采用氢氧化钾(KOH)化学活化、850℃高温碳化和可控氩气气氛合成活性炭。该方法获得了2768 m2/g的BET表面积,这是报道的生物质衍生活性炭的最高BET表面积。TGA、XRD、SEM和FTIR分析表明,该活性炭具有较高的热稳定性、无定形碳结构、复杂的多孔结构以及含氧官能团和芳香结构。通过研究吸附剂质量(3、5、7)mg、溶液pH(4、7、10)和亚甲基蓝初始浓度(100、200、300)mg/L对吸附工艺的影响,采用响应面法结合中心复合设计优化吸附工艺。拟合模型为平方根反比变换后的简化二次元模型,其预测精度较高,R2值为0.9932。RSM研究表明,吸附量随吸附剂重量的减小、溶液pH和亚甲基蓝浓度的增大而增大。在吸附剂质量为3 mg、pH为10、MB浓度为300 mg/L的条件下,由于高pH条件下静电吸引力增强,低吸附剂质量下活性位点利用率高,高染料浓度条件下传质驱动力强,吸附量最大可达1684 mg/g。动力学分析表明,Elovich模型(R2 = 0.9946)最能描述吸附过程,表明初始吸附阶段快速,随后逐渐饱和。等温线研究表明,Temkin模型拟合最佳(R2 = 0.8994),表明吸附剂与亚甲基蓝分子之间的热分布均匀,相互作用一致。DDSSAC的最大Langmuir吸附容量为716 mg/g,在氢键、π -π堆积、疏水相互作用和MB与碳表面的静电吸引等方面优于其他农业废弃物活性炭。这些研究结果表明,枣壳活性炭是一种高效、环保的亚甲基蓝吸附剂。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

High Performance Batch Adsorption of Methylene Blue Using Desert Date Seed Shell Activated Carbon: Characterization and Response Surface Methodology Optimization

High Performance Batch Adsorption of Methylene Blue Using Desert Date Seed Shell Activated Carbon: Characterization and Response Surface Methodology Optimization

This study explores the development of activated carbon from Desert Date Seed Shells (DDSSAC) for methylene blue removal. The activated carbon was synthesized using an innovative preparation method involving chemical activation with potassium hydroxide (KOH), carbonization at an unprecedented high temperature of 850 °C, and a controlled argon atmosphere. This method resulted in a remarkable BET surface area of 2768 m2/g, the highest reported for biomass-derived activated carbon. The TGA, XRD, SEM, and FTIR analyses demonstrated that the activated carbon exhibits high thermal stability, an amorphous carbon structure, a complex porous texture, and the presence of oxygenated functional groups and aromatic structures, respectively. The adsorption process was optimized using response surface methodology coupled with central composite design by studying the effect of adsorbent weight (3, 5, 7) mg, pH of the solution (4, 7, 10), and initial methylene blue concentration (100, 200, 300) mg/L. The fitted model, an inverse square root transformed reduced quadratic model, exhibited excellent predictive accuracy, as indicated by a high R2 value of 0.9932. The RSM study showed that the adsorption capacity increased with the decrease in adsorbent weight and the increase in the pH of the solution and methylene blue (MB) concentration. The maximum adsorption capacity was 1684 mg/g, which was achieved at an adsorbent weight of 3 mg, pH of 10, and MB concentration of 300 mg/L due to enhanced electrostatic attraction at high pH, efficient utilization of active sites with low adsorbent weight, and a strong mass transfer driving force at higher dye concentration. The kinetic analysis showed that the Elovich model (R2 = 0.9946) best described the adsorption process, indicating a rapid initial adsorption phase followed by gradual site saturation. The isotherm study revealed that the Temkin model provided the best fit (R2 = 0.8994), highlighting uniform heat distribution and consistent interactions between the adsorbent and methylene blue molecules. The maximum Langmuir adsorption capacity of DDSSAC was 716 mg/g, outperforming other activated carbons derived from agricultural waste referring to hydrogen bonding, π–π stacking, hydrophobic interactions, and electrostatic attraction between MB and the carbon surface. These findings establish desert date seed shells activated carbon as a highly effective and eco-friendly adsorbent for methylene blue removal.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Water, Air, & Soil Pollution
Water, Air, & Soil Pollution 环境科学-环境科学
CiteScore
4.50
自引率
6.90%
发文量
448
审稿时长
2.6 months
期刊介绍: Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments. Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation. Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信