کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7084107 1460007 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A comparative study of aerobically digested and undigested sludge in preparation of magnetic chars and their application in 1-diazo-2-naphthol-4-sulfonic acid adsorption
ترجمه فارسی عنوان
یک مطالعه تطبیقی ​​لجن هیدروژنی هضم شده و ناپایدار در تهیه عناصر مغناطیسی و کاربرد آنها در جذب اسید 1-دیازو-2-نفتل-4-سولفونیک
کلمات کلیدی
لجن فاضلاب، 1،2،4-اسید، کاراکتر مغناطیسی، جذب،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
In this work, two types of sewage-sludges, aerobically digested and undigested sewage sludge, were used as precursors in the preparation of chars with magnetic property. The two solids were characterized to establish their textural and chemical properties. Due to different elemental composition, chars from the digested sludge were found to contain zeolite-like minerals such as NaP1 zeolite, which enables its abilities of anion exchange, while chars from undigested sewage sludge exhibited a well-degreed graphite structure. 1-Diazo-2-naphthol-4-sulfonic acid (1,2,4-Acid) was used as a model pollutant to investigate its adsorption on prepared chars. The adsorption kinetics of 1,2,4-Acid onto both chars followed pseudo-second-order kinetics. The simulated Langmuir-Freundlich model illustrated that the equilibrium adsorption amount of 1,2,4-Acid was 102.8 and 105.3 mg/g, respectively, at 303 K. The adsorption amount declined on digested chars, whereas kept stable on the other in the presence of sodium chloride, suggesting the diversity in adsorption behavior.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 136, May 2013, Pages 719-724
نویسندگان
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