حذف آنيون کروم شش ظرفيتي از محلول‌هاي آبي با استفاده از ماده نانو حفره MCM-41 عامل‌دار شده با گروه آميني
Journal Title: آب و فاضلاب - Year 2016, Vol 27, Issue 4
Abstract
Removal of Cr(VI) from Aqueous Solutions Using Amino-functionalized Nanoporous MCM-41 Abstract An amino-functionalized nanoporous material was prepared by grafting 3-aminopropyl trimethoxysilane (APTMS) group onto MCM-41. The as-synthesized material was characterized by X-ray diffraction (XRD) analysis, nitrogen adsorption-desorption measurements (BET), thermogravimetric analysis (TGA), and Fourier transform infrared spectrometry (FTIR) to confirm the ordered mesoporous structure and the functionalization of the amino group. The NH2-MCM-41 thus obtained was employed as the sorbent to remove Cr(VI) ions from aqueous solutions. The batch adsorption process was carried out to evaluate the effects of solution pH, adsorbent dosage, metal ion concentration, and temperature. Results revealed that removal efficiency increased to a maximum of 124 mg.g‒1 and metal uptake decreased (0.1 g.l‒1) with increasing sorbent dosage from 0.1 to 3.5 g.l‒1. A reverse trend was, however, observed with increasing Cr(VI) concentration. It was also found that a pH equal to 3 was the optimum level for the removal of Cr(VI) ions from aqueous solutions. Thermodynamic examinations revealed the strong dependence of the adsorption process on temperature such that adsorption capacity increased with increasing temperature, indicating the endothermic and spontaneous nature of the adsorption process.
Authors and Affiliations
Farshid Ghorbani, Habibollah Younesi, zahra Mehraban, Mehmet Sabri Celik, Ali Asghar Ghoreishi, Mansour Anbia
Keywords
Related Articles
- EP ID EP179811
- DOI -
- Views 105
- Downloads 0
سازه‌هاي تئوري رفتار برنامه‌ريزي شده و صرفه‌جويي در مصرف آب Applicability of Theory of Planned Behavior for Predicting Water Conservation Behaviors among College Students
Applicability of Theory of Planned Behavior for Predicting Water Conservation Behaviors among College Students Abstract Noticing drought crisis in Iran and importance of water conservation and recognizing its determin...
Effect of Household Water Tanks on Leakage Reduction for Distribution Networks under Operation تأثير استفاده از مخازن آب داخل ساختمان بر کاهش نشت شبکه‌هاي توزيع در حال بهره‌برداري
Abstract Control and reduction of leakage in water distribution networks are very important due to limitation of drinking water resources. Water distribution networks are currently designed based on hourly peak consumpt...
مقايسه فرايندهاي کمپوست و ورمي کمپوست براي پالايش کنده حفاري ميدان نفتي اهواز در حضور لجن بيولوژيکي Comparison of Composting and Vermicomposting Processes in Refining Drill Cutting Mud from Ahvaz Oil Field in the Presence of Biosolids
Comparison of Composting and Vermicomposting Processes in Refining Drill Cutting Mud from Ahvaz Oil Field in the Presence of Biosolids Cutting and drilling mud contains significant amounts of petroleum hydrocarbons that...
استفاده از گونه‌هاي درختي رطوبت‌پسند در جذب زيستي کادميم در محيط‌هاي آلوده Using Hydrophilic Tree Species for the Biological Removal of Cadmium in Contaminated Environments
Using Hydrophilic Tree Species for the Biological Removal of Cadmium in Contaminated Environments M. Jokar1, T. Rostami Shahraji2, M. Mohammadi3, A. Goleij1 1. PhD Student, Faculty of Natural Resources, University of G...
ارائه يک مدل خودشويي براي کانال‌ها با مقطع ذوزنقه A Self-Cleansing Model for Trapezoidal Channels
A Self-Cleansing Model for Trapezoidal Channels Investigation of channel capability for sediment transport is an important factor in sanitary sewer and urban runoff drainage system design. This is because of the undesir...