Documents

ali2017.pdf

Description
Description:
Categories
Published
of 30
All materials on our website are shared by users. If you have any questions about copyright issues, please report us to resolve them. We are always happy to assist you.
Share
Transcript
  Accepted Manuscript Title: Removal of Mn(II) from water using chemicallymodi fi ed banana peels as ef  fi cient adsorbentAuthor: Ashraf AliPII: S2215-1532(16)30087-3DOI: http://dx.doi.org/doi:10.1016/j.enmm.2016.12.004Reference: ENMM 76To appear in:Received date: 25-11-2016Revised date: 21-12-2016Accepted date: 23-12-2016Please cite this article as:  { http://dx.doi.org/ This is a PDF  fi le of an unedited manuscript that has been accepted for publication.As a service to our customers we are providing this early version of the manuscript.Themanuscriptwillundergocopyediting,typesetting,andreviewoftheresultingproof before it is published in its  fi nal form. Please note that during the production processerrors may be discovered which could affect the content, and all legal disclaimers thatapply to the journal pertain.  1 Removal of Mn(II) from water using chemically modified banana peels as efficient adsorbent Ashraf Ali Department of Chemistry & Chemical Engineering, Inha University, Incheon 402-751, South Korea *Corresponding Author ashrafaliswati@gmail.com or ashrafchemist12@gmail.com or ashraf@inha.edu Graphical abstract A EDCB F    2 Highlights    The grafting co-polymerization of acrylonitrile onto the bleached pulp was carried out using Fenton’s reagent (Fe + /H 2 O 2 ) as initiator.    Acrylonotrile grafted banana peels are used as adsorbent for the removal of Mn(II) ion from aqueous solution.      The effect of pH, adsorbent dose, concentration and contact time were studied on adsorption of Mn(II) onto grafted banana peels.    The adsorption of Mn(II) onto grafted banana peels (GBPs) was recorded to be 94% at optimized conditions.  3 ABSTRACT In this study a novel acrylonitrile grafted cellulosic adsorbent is prepared from bleached banana  pulp. Banana peels were hydrolyzed with alkali followed by bleaching with sodium chlorate (NaClO 3 ). The grafting co-polymerization of acrylonitrile onto the bleached pulp was carried out using Fenton’s reagent (Fe + /H 2 O 2 ) as initiator. The acrylonitrile grafted cellulosic adsorbent was used for Mn(II) removal from aqueous solution. The adsorption of Mn(II) onto grafted banana  peels was recorded to be 94 %. The adsorption equilibrium is fitted well by Langmuir isotherm model. Owing to high efficiency and low cost, grafted banana peels (GBPs) can be used as effective adsorbent for Mn(II) removal from aqueous solution and industrial waste water. Key words: Banana peel, Adsorbent, Acrylonitrile, Grafting co-polymerization. Introduction Heavy metals are introduced into the environment through natural phenomena and human activities, resulting in the contamination of environment. The discharge of industrial effluents into water bodies is a major environmental problem worldwide, because it contains toxic heavy metals and other organic and inorganic pollutants. Industrial wastewater often contains heavy metal ions which are non-biodegradable and many of them are soluble in aqueous media and easily available to living organisms. Heavy metals removal from aqueous media is an important and challenging task (Jiwan and Kalamdhad 2011; Barkat 2011). Manganese exists in water as a Mn 2+ (divalent ion) and due to its organoleptic properties it is considered a pollutant. Manganese contamination affect the appearance, color, taste and odor of water. The recommended limit of manganese in drinking water is 0.05 mg/L. It causes neurological disorder when inhaled at a rate of about 10 mgday- 1 (Adeogun et al. 2011). The chronic exposure to manganese produces lethargy, tremors, psychological disturbances and respiratory infections (Abdeen et al. 2015). The removal of Mn(II) from water is still a serious problem in various countries and it is a challenging task. Numerous methods and techniques have been utilized for the removal of heavy metals from solution such as chemical precipitation, ion exchange,    phytoextraction, ultra-filtration, reverse osmosis, and adsorption (Bailey et al. 1999; Sud et al. 2008; Demirbas 2008; Chiban et al. 2012; Choi et al. 2007; Badmus et al. 2007). However, most of these methods have some limitations, such as high operational cost, complicated design, ineffective at low metal

SPGT lab

Sep 22, 2019
We Need Your Support
Thank you for visiting our website and your interest in our free products and services. We are nonprofit website to share and download documents. To the running of this website, we need your help to support us.

Thanks to everyone for your continued support.

No, Thanks
SAVE OUR EARTH

We need your sign to support Project to invent "SMART AND CONTROLLABLE REFLECTIVE BALLOONS" to cover the Sun and Save Our Earth.

More details...

Sign Now!

We are very appreciated for your Prompt Action!

x