دانلود رایگان مقاله لاتین سلولز اصلاح شده از سایت الزویر
عنوان فارسی مقاله:
جذب سریع و انتخابی به عنوان (V) در سلولز اصلاح شده آماده حاوی بخش مس (II)
عنوان انگلیسی مقاله:
Fast and selective adsorption of As(V) on prepared modified cellulose containing Cu(II) moieties
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
Arsenic is toxic and its presence in drinking water causes toxic and carcinogenic effects on human beings. It is reported that long-term drinking of arsenic contaminated water causes gastrointestinal, skin, liver, and nerve tissue injuries (Saha et al., 1999; ATSDR, 2002). United States Environmental Protection Agency (USEPA) in 2001 reduced the limit of arsenic in drinking water to 10 mg/L from an earlier value of 50 mg/L (Zaspalis et al., 2007; Kundu and Gupta, 2007; Pagana et al., 2008). During the last 20 years, naturally occurring arsenic was found to be widespread in natural water in the USA, Argentina, Taiwan, China, Hungary, Vietnam, Chile, Bangladesh and India. It was estimated that some 35–77 million people were at extreme risk of groundwater arsenic poisoning in Bangladesh (Chakravarty et al., 2002; Souter et al., 2003; Singh et al., 2004; Kundu and Gupta, 2005). Arsenic exists in natural waters in both inorganic as well as organic forms. The inorganic form of arsenic is more toxic than its organic form. Inorganic arsenic exists in natural waters in two oxidation states, As(III) and As(V). As(III) is dominant in more reduced conditions whereas As(V) isdominant in an oxidizing environment (Xu et al., 1991; Anawar et al., 2003; Ng et al., 2003). Several technologies have been employed to remove arsenic from water, including reverse osmosis, electrodialysis, coagulation, ion exchange, adsorption, and chemical precipitation. Adsorption is an economical and a reliable technique which is considered as an efficient alternative for removal of arsenic (Aredes et al., 2012). Different adsorbents such as activated carbons (Lorenzen et al., 1995), biological materials (Oehmen et al., 2006; Halttunen et al., 2007; Devi et al., 2008; Mondal et al., 2008), mineral oxides (Cumbal et al., 2003; Sun et al., 2006) were applied. Metal-loaded resins were also successfully used for arsenic adsorption. Metal-loaded chelating resins have advantages of large binding energy, good stability, high preconcentration factor, mechanical stability and good reproducibility. Iron(III)-containing resins and Zr(IV)- loaded chelating resin were studied for the removal of As(V) and As(III) from aqueous solutions (Matsunga et al., 1996; Haron et al., 1999; Balaji et al., 2005). In our group of research, we earlier reported on synthetic resins containing Cu(II) moieties loaded on GMA/MBA-TEPA resin and discussed its adsorption behavior towards As(V) (Donia et al., 2013). In this study, renewable, inexpensive and eco-friendly copper containing biosorbent (Cell-N-Cu) has been successfully utilized for adsorption of As(V) from aqueous medium, with high adsorption capacity as well as fast uptake. The uptake characteristics have been studied using batch method at different experimental conditions. Kinetic and thermodynamic parameters of the uptake process were also calculated and discussed. The regeneration of the loaded resin for the repeated use was investigated.
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کلمات کلیدی:
Fabrication of Core–Shell CMNP@ PmPD Nanocomposite for Efficient ... pubs.acs.org/doi/full/10.1021/acssuschemeng.7b00468 by J Wu - 2017 Mar 27, 2017 - Preparation of CMNPs and CMNP@PmPD Composites ...... and selective adsorption of As(V) on prepared modified cellulose containing Cu(II) ... Useful Modified Cellulose Polymers as New Emulsifiers of ... pubs.acs.org/doi/full/10.1021/la900386q by M Uyama - 2009 - Cited by 26 - Related articles Mar 18, 2009 - We prepared novel nanoparticles containing cubic-phase-forming lipids using hydroxypropyl methylcellulose acetate succinate (HPMCAS). Useful modified cellulose polymers as new emulsifiers of cubosomes. https://www.ncbi.nlm.nih.gov/pubmed/19296640 by M Uyama - 2009 - Cited by 26 - Related articles Apr 21, 2009 - Useful modified cellulose polymers as new emulsifiers of cubosomes. ... We prepared novel nanoparticles containing cubic-phase-forming ... on prepared modified cellulose containing Cu(II) moieties - INFONA https://www.infona.pl/.../bwmeta1.element.elsevier-f54bb78f-1e63-35dd-804f-42b2799... by AM Yousif - 2016 - Cited by 2 - Related articles The synthesis of copper containing modified cellulose (Cell-N-Cu) adsorbent was achieved. The adsorbent was used to purify different waters from As(V) at ... Preparation of modified cotton cellulose in ionic liquid and its ... pubs.rsc.org/-/content/articlehtml/2015/ra/c5ra08265j by L Xu - 2015 - Cited by 3 - Related articles Sep 7, 2015 - Preparation of modified cotton cellulose in ionic liquid and its adsorption of Cu(II) and Ni(II) from aqueous solutions. Lei Xu, Xiaoqiong Lu and ... Phthalocyanine Research and Applications https://books.google.com/books?isbn=084934624X Arthur L. Thomas - 1990 - Science An Al phthalocyanine (pc) CI photoactivator is prepared as follows. ... the basis of which is a modified cellulose acetate.7 Laundry bars may contain a ... in colored detergent tablets.12 Surfactants containing Cu pc are prepared from poly( 1 ...
