adsorption of copper(ii) from an wastewater effluent of electroplating industry by poly(ethyleneimine)-functionalized silica

نویسندگان

hongbo xu

dan-dan liu

lu he

na liu

guiling ning

چکیده

the poly(ethyleneimine)-functionalized silica has been developed successfully as an effective adsorbent for the adsorption removal of cu(ii) ions from electroplating wastewater. the influences of ph, contact time and initial concentration of cu(ii) ions on the adsorption capacity and the effect of adsorbent dosage on the removal efficiency of cu(ii) ions from electroplating wastewater were investigated. the adsorption behaviors and mechanisms of cu(ii) ions onto poly(ethyleneimine)-functionalized silica were also studied in details. the uptake of cu(ii) ions on poly(ethyleneimine)-functionalized silica was constant in the range of ph 4-8. the poly(ethyleneimine)-functionalized silica offered a fast rate for the adsorption of cu(ii) ions and reached an equilibrium state within 30 min. the results of static batch experiment indicated that the maximum static adsorption capacity of cu(ii) ions on pei-functionalized silica was 31.8 mg/g. the adsorption process was found to follow a pseudo-second-order rate mechanism. langmuir adsorption isotherms fitted well in the experimental data. the optimum dosage of poly(ethyleneimine)-functionalized silica for the removal cu(ii) ions from electroplating wastewater was 10 g/l. the removal efficiency of cu(ii) ions from electroplating wastewater was 92.6%.some scale-up experiments were also investigated to offer the reference for water treatment. the results showed that poly(ethyleneimine)-functionalized silica could be employed as an effective adsorbent for the removal of cu(ii) ions from electroplating wastewater.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Adsorption of Copper(II) from an Wastewater Effluent of Electroplating Industry by Poly(ethyleneimine)-Functionalized Silica

The poly(ethyleneimine)-functionalized silica has been developed successfully as an effective adsorbent for the adsorption removal of Cu(II) ions from electroplating wastewater. The influences of pH, contact time and initial concentration of Cu(II) ions on the adsorption capacity and the effect of adsorbent dosage on the removal efficiency of Cu(II) ions from electroplatin...

متن کامل

Nickel removal from electroplating industry wastewater: A bamboo activated carbon

Water is prime requirement for surviving of any living beings.  The existence of surface water and groundwater sources are used for domestic, agriculture and industrial purposes in all over the world. Fresh water from both the water sources is highly contaminated in recent years because of rapid population growth, modern agriculture and industrial growth. Among them, contamination of water sour...

متن کامل

Investigation of Carbon Dioxide Adsorption on Amino-Functionalized Mesoporous Silica

Carbon dioxide (CO2) adsorption on unfunctionalized and amino-functionalized SBA-3 materials are investigated and compared in this study. The synthesized materials are characterized by various techniques such as X-ray diffraction (XRD), Brunauer-Emmet-Teller (BET) method, Fourier transform infrared (FT-IR) and Scanning electron microscopy (SEM).The isotherms of these materials have been measure...

متن کامل

The Efficiency of Bio-adsorption of Heavy Metals from Pharmaceutical Effluent by Rumex crispus L. Seed

The programs of managing waste materials in developing countries are often unsatisfactory and the unreasonable disposal of waste is a major issue in the worldwide. The main aim of the current study is to: Assess the applicability of Rumex crispus L. in removing heavy metals from the contaminated wastewater effluent form Pharmaceutical laboratories by bio-adsorption method. The dried R. crispus ...

متن کامل

Enhanced Adsorption of Trivalent Arsenic from Water by Functionalized Diatom Silica Shells

The potential of porous diatom silica shells as a naturally abundant low-cost sorbent for the removal of arsenic in aqueous solutions was investigated in a batch study. The objective of this work was to chemically modify the silica shells of a diatom Melosira sp. with bifunctional (thiol and amino) groups to effectively remove arsenic in its toxic As(III) form (arsenite) predominant in the aqua...

متن کامل

Chemical Industry Wastewater Treatment Using Adsorption

In a typical wastewater treatment fl ow sheet used by several industrial units in Indi a. various stages of treatment include primary treatment. foll owed by secondary treatment . and tertiary treatment. The concentration of total dissolved solids increases during neutrali zation of the wastewater with acid/ alkali during primary treatment. which adversely affects the activity of microorgani sm...

متن کامل

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید


عنوان ژورنال:
iranian journal of chemistry and chemical engineering (ijcce)

ناشر: iranian institute of research and development in chemical industries (irdci)-acecr

ISSN 1021-9986

دوره 34

شماره 2 2015

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023