فهرست مقالات Adsorption capacity

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  1 - Removal of Bismarck Brown and Disulfine Blue from Aqueous Solutions Using MWCNTs Functionalized by N-(3-nitrobenzylidene)-N'-trimethoxysilylpropyl-ethane-1,2-diamine
  Alireza Geramizadegan
  10.30495/jptc.2023.72910.1259
  The applicability of N-(3-nitro-benzylidene)-N-trimethoxysilylpropyl-ethane-1,2-diamine onto multi walled carbon nanotubes(NBATSPED-MWCNTs) for removing Bismarck Brown and Disulfine Blue from aqueous solutions has been reported. This novel material was characterized by چکیده کامل

  The applicability of N-(3-nitro-benzylidene)-N-trimethoxysilylpropyl-ethane-1,2-diamine onto multi walled carbon nanotubes(NBATSPED-MWCNTs) for removing Bismarck Brown and Disulfine Blue from aqueous solutions has been reported. This novel material was characterized by different techniques such as XRD, SEM and FT-IR. The influence of nanoparticle dosage, pH of the sample solution, individual dyes concentration, contact time between the sample and the adsorbent, temperature, and ionic strength of the sample solution were studied by performing a batch adsorption technique. The maximum removal of 15 mg L-1 of individual dyes from an aqueous sample solution at pH 8.0 for Bismarck Brown (BB) and at pH 6.0 for Disulfine Blue (DSB) was achieved within 65 min when an adsorbent amount of 50 mg was used. It was shown that adsorption of the Bismarck Brown (BB) and Disulfine Blue (DSB) follows the pseudo-second-order rate equation, while the Langmuir model explains equilibrium data. Isotherms had also been used to obtain the thermodynamic parameters such as free energy (ΔG0), enthalpy (ΔH0) and entropy (ΔS0) of adsorption. The negative value of (ΔGo, ΔHo and ΔSo) confirmed the sorption process was endothermic reflects the affinity of multi walled carbon nanotubes functionalized towards Bismarck Brown (BB) and Disulfine Blue (DSB). A maximum adsorption capacity in binary-component system (6.67 mg/g for Bismarck Brown (BB), and 9.36 mg/g for Disulfine Blue (DSB)). پرونده مقاله
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  2 - Application of CM-β-CD-Fe3O4NPs: As an Adsorbent for the Removal of Aluminum ion from Wastewater
  Amir Abbas Ghazali Farzaneh Marahel Bijan Mombeni Goodajdar
  The applicability of CM-β-CD-Fe3O4NPs synthesis for the removal of Aluminum ion from wastewater was studied. The active sites and morphology structure of CM-β-CD-Fe3O4NPs synthesis were analyzed using BET, FT-IR, XRD, SEM, and XPS respectively. The effect of i چکیده کامل

  The applicability of CM-β-CD-Fe3O4NPs synthesis for the removal of Aluminum ion from wastewater was studied. The active sites and morphology structure of CM-β-CD-Fe3O4NPs synthesis were analyzed using BET, FT-IR, XRD, SEM, and XPS respectively. The effect of independent variables namely pH, adsorbent dosage, contact time, Al (III) ion concentration in solution, were investigated through batch experiments, and to be 7, 50 mg L-1, 0.1 g and 90 min for the adsorption of Al (III) ion onto CM-β-CD-Fe3O4NPs sorbent were found respectively. The adsorbed Al (III) ion onto the CM-β-CD-Fe3O4NPs showed excellent fitting to the pseudo-first-order adsorption kinetic with a correlation coefficient value of 0.999.Meanwhile, the experimental equilibrium data were fitted to the conventional isotherm models accordingly. Freundlich isotherm has good applicability for the experimental data with a maximum adsorption capacity (qmax) of 35.88 mgg-1 for Al (III) ion onto CM-β-CDFe3O4NPs. The overall results confirmed that CM-β-CD-Fe3O4NPs could be a promising adsorbent material for Al (III) ion removal from wastewater treatment. پرونده مقاله
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  3 - بررسی جذب یون سرب (II) از محلول‌های آبی با زئولیت اصلاح‌شده با (3-‌آمینو‌پروپیل)‌تری‌اتوکسی سیلان
  حسین شهریاری فر ترگل رحیمی مسئله نژاد مهدی حسن زاده محبوبه ربانی
  10.30495/jacr.2021.686429
  در این پژوهش از زئولیت عامل‌دارشده (Zeolite-APTES) برای حذف یون‌های سرب در محیط آبی استفاده شده است. زئولیت‌ها به دلیل داشتن ظرفیت تبادل یونی و پایداری شیمیایی و مکانیکی، بسیار موردتوجه هستند. عوامل موثر بر فرایند جذب یون سرب از جمله مقدار جاذب (mg)، غلظت اولیه (ppm)، چکیده کامل

  در این پژوهش از زئولیت عامل‌دارشده (Zeolite-APTES) برای حذف یون‌های سرب در محیط آبی استفاده شده است. زئولیت‌ها به دلیل داشتن ظرفیت تبادل یونی و پایداری شیمیایی و مکانیکی، بسیار موردتوجه هستند. عوامل موثر بر فرایند جذب یون سرب از جمله مقدار جاذب (mg)، غلظت اولیه (ppm)، pH و زمان (min) با استفاده از طراحی آزمایش به روش سطح پاسخ (RSM) بررسی و بهینه‌سازی شد. نتیجه ها نشان داد که بازده جذب سرب از محیط آبی با افزایش زمان و مقدار جاذب افزایش می یابد و به تدریج به مقدار ثابتی می‌رسد. همچنین، با افزایش غلظت اولیه یون سرب، مقدار درصد حذف یون سرب کاهش می‌یابد. زئولیت عامل‌دارشده، ظرفیت جذب خوبی را برای سرب نشان داد. بیشینه ظرفیت جذب جاذب برای یون سرب، mg/g 89/28 به دست آمد. افزو ن براین، فرایند جذب با هم‌دمای لانگمویر همخوانی داشت و از سینتیک شبه مرتبه اول پیروی می کرد. پرونده مقاله
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  4 - Removal of Chromium (VI) from Wastewater by Palm Kernel Shell-based on a Green Method
  Maryam Razavi Mehr Mohammad Hossein Fekri Faezeh Omidali Noushin Eftekhari Behrouz Akbari-adergani
  10.22034/jchr.2019.664165
  The potential of palm kernel shell, as agricultural waste, to remove Cr (VI) from aqueous solution was evaluated. Effective parameters such as pH (2–8), temperature (20–80 °C), contact time (10-120 min), adsorbent concentration (0.1–1 g/L), and ini چکیده کامل

  The potential of palm kernel shell, as agricultural waste, to remove Cr (VI) from aqueous solution was evaluated. Effective parameters such as pH (2–8), temperature (20–80 °C), contact time (10-120 min), adsorbent concentration (0.1–1 g/L), and initial Cr (VI) concentration (10-100 mg/L) were all studied to attain the maximum removal efficiency. Results show the adsorption capacity increases as pH value decreases and the optimum pH value is pH= 2.0. The other optimal conditions are temperature 40 °C, contact time 45 min, adsorbent concentration 0.5 g/L and initial Cr (VI) concentration 10 mg/L. The equilibrium data for chromate adsorption well fitted to Freundlich equation, with maximum adsorption capacity of 125 mg/g. This novel activated carbon derived from palm shell powder has been found to be effective for the removal of Cr (VI) and not noxious to the ecosystem. پرونده مقاله