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Banana peels were employed for the removal of metribuzin from aqueous solution. Sorption in the batch mode was optimized regarding pH, contact time, sorbent dose, initial pesticide concentrations, and temperature. The sorption data were fitted to pseudo-first-order, pseudo-second-order, intraparticle diffusion, Elovich, and liquid film diffusion model, the pseudo-second-order exhibiting best fit (R2 = 0.9803). Of the four most common sorption isotherm models (Langmuir, Freundlich, Tempkin, and Dubinin–Radushkevich), the data followed the Langmuir isotherm with highest correlation. The maximum adsorption capacity was found to be 167 mg g?1. Gibbs free energy, enthalpy, and entropy showed that the sorption was exothermic and spontaneous. 相似文献
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Nguyen Duyen Thi Cam Tran Thuan Van Kumar Ponnusamy Senthil Din Azam Taufik Mohd Jalil Aishah Abdul Vo Dai-Viet N. 《Environmental Chemistry Letters》2022,20(2):1421-1451
Environmental Chemistry Letters - Water contamination is an environmental burden for the next generations, calling for advanced methods such as adsorption to remove pollutants. For instance,... 相似文献
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Wilkins K Nielsen KF Din SU 《Environmental science and pollution research international》2003,10(3):162-166
We reported previously that trichodiene, a volatile trichothecene derivative, was produced by a Stachybotrys isolate, also known to produce highly cytotoxic, non-volatile, macrocyclic trichothecenes (satrotoxins). We investigated the relationship between the production of trichodiene and various non-volatile trichothecenes for several molds. Volatile metabolites were concentrated by adsorption on Tenax TA and analyzed by GC/MS, while non-volatile metabolites were separated by HPLC, derivatized and analyzed by GC/MS. Stachybotrys chartarum isolates producing macrocyclic trichothecenes secreted significantly larger amounts of trichodiene and other sesquiterpenes than isolates which only produced simple trichothecenes. The amounts of secreted trichodiene were relatively small in all cases. With the exception of Memnoniella, which excreted small amounts of sesquiterpenes, the other isolates produced varying amounts of sesquiterpenes, including trichodiene, as well as simple tricothecenes, no detectable trichodiene, but large amounts of griseofulvin derivatives. In Stachybotrys there is apparently a correlation between trichodiene and macrocyclic trichothecene production. In the remaining isolates, there was no simple relationship between trichodiene and non-volatile trichothecene synthesis. Trichodiene is produced in larger amounts by Stachybotrys isolates, which also produce satratoxins, but it will be difficult to utilize this metabolite to detect toxic isolates in buildings due to the relatively small amounts excreted. 相似文献
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环境产业金融支持的框架构建分析 总被引:4,自引:0,他引:4
现阶段我国环境产业面临严峻的资本形成不足、发展资金短缺的困境,对产业发展形成严重制约。环境产业金融支持理应成为推进我国环境产业和经济可持续发展的战略性机制和基本途径。文章从环境产业资本形成、投资效率,金融运行三个角度进行了分析,梳理了环境产业发展进程中金融支持的内生逻辑,为环境产业金融支持的框架构建提供了理论依据。 相似文献
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Khan Muhammad Hafeez Ullah Khattak Jabar Zaman Khan Jamil Muhammad Malook Ijaz Khan Shahid Ullah Jan Mehmood Din Ismail Saud Shah Kamran Muhammad Alharby Hesham Fahad Shah 《Environmental science and pollution research international》2017,24(30):23850-23863
Environmental Science and Pollution Research - Salinity is a worldwide environmental problem of agricultural lands. Smoke and plant growth-promoting bacteria (PGPR) are individually used to improve... 相似文献