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Journal ArticleDOI

Removal of heavy metals from emerging cellulosic low-cost adsorbents: a review

01 Sep 2017-Applied Water Science (Springer Berlin Heidelberg)-Vol. 7, Iss: 5, pp 2113-2136
TL;DR: In this article, the most common and recent materials are reviewed as cellulosic low-cost adsorbents, along with their elemental properties of cellulose, hemicelluloses and lignin contents.
Abstract: Heavy metal pollution is a major problems in the environment. The impact of toxic metal ions can be minimized by different technologies, viz., chemical precipitation, membrane filtration, oxidation, reverse osmosis, flotation and adsorption. But among them, adsorption was found to be very efficient and common due to the low concentration of metal uptake and economically feasible properties. Cellulosic materials are of low cost and widely used, and very promising for the future. These are available in abundant quantity, are cheap and have low or little economic value. Different forms of cellulosic materials are used as adsorbents such as fibers, leaves, roots, shells, barks, husks, stems and seed as well as other parts also. Natural and modified types of cellulosic materials are used in different metal detoxifications in water and wastewater. In this review paper, the most common and recent materials are reviewed as cellulosic low-cost adsorbents. The elemental properties of cellulosic materials are also discussed along with their cellulose, hemicelluloses and lignin contents.

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Citations
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Journal ArticleDOI
TL;DR: The current state-of-the-art of available technologies for water purification are reviewed and their field of application for heavy metal ion removal is discussed, as heavy metal ions are the most harmful and widespread contaminants.
Abstract: Water pollution is a global problem threatening the entire biosphere and affecting the life of many millions of people around the world. Not only is water pollution one of the foremost global risk factors for illness, diseases and death, but it also contributes to the continuous reduction of the available drinkable water worldwide. Delivering valuable solutions, which are easy to implement and affordable, often remains a challenge. Here we review the current state-of-the-art of available technologies for water purification and discuss their field of application for heavy metal ion removal, as heavy metal ions are the most harmful and widespread contaminants. We consider each technology in the context of sustainability, a largely neglected key factor, which may actually play a pivotal role in the implementation of each technology in real applications, and we introduce a compact index, the Ranking Efficiency Product (REP), to evaluate the efficiency and ease of implementation of the various technologies in this broader perspective. Emerging technologies, for which a detailed quantitative analysis and assessment is not yet possible according to this methodology, either due to scarcity or inhomogeneity of data, are discussed in the final part of the manuscript.

838 citations

Journal ArticleDOI
TL;DR: Results of ingestion and dermal pathways for adults and children in the current analyzed review showed that As is the major contaminant, and remediation techniques such as the introduction of aquatic phytoremediation plant species and adsorbents should be included in land management plans in order to reduce human risks.

414 citations

Journal ArticleDOI
TL;DR: In this paper, the authors surveyed the recent progress in the development of polymeric membranes for membrane adsorption (MA) and showed that nanoparticles are potentially useful as fillers in the host membrane to enhance its performance.
Abstract: Application of polymeric membranes for the adsorption of hazardous pollutants may lead to the development of next-generation reusable and portable water purification appliances. Membranes for membrane adsorption (MA) have the dual function of membrane filtration and adsorption to be very effective to remove trace amounts of pollutants such as cationic heavy metals, anionic phosphates and nitrates. In this review article, recent progresses in the development of MA membranes are surveyed. In addition, recent progresses in the development of advanced adsorbents such as nanoparticles are summarized, since they are potentially useful as fillers in the host membrane to enhance its performance. The future directions of R&D in this field are also shown in the conclusion section.

309 citations

Journal ArticleDOI
TL;DR: Chitosan-based adsorbents have attracted increasing attention in water and wastewater treatment in recent years due to its abundance and low price, as well as rich amino and hydroxyl groups.
Abstract: Chitosan-based adsorbents have attracted increasing attention in water and wastewater treatment in recent years due to its abundance and low price, as well as rich amino and hydroxyl groups. Howeve...

262 citations


Cites background from "Removal of heavy metals from emergi..."

  • ...58 mg/g for Cd2C) (Malik et al., 2016) and activated carbon (3....

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  • ...The grafted chitosan possessed a lower degree of swelling with a higher adsorption capacity for Cd2C and Pb2C than raw chitosan....

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  • ...And the new material exhibited selectivity for metal ions in the order of Cu2C >> Ni2C > Cd2C, Pb2C, Ca2C....

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  • ...However, HSAB theory can’t be used to explain the report from Rangel-Mendez et al. (2009) that chitosan selectivity for the removal of heavy metals decreased in the following order: Cu2C > Cd2C > Figure 5....

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  • ...At the same time, with the modification of chelating agents, their adsorption capacities are more than just higher than raw chitosan, but even higher than both that of rice husk (7.1–30.0 mg/g for Cu2C; 33.1–45.6 mg/g for Cr6C; 8.58 mg/g for Cd2C) (Malik et al., 2016) and activated carbon (3.88–46.3 mg/g for Cu2C; 9.1 mg/g for Ni2C; 40.3–64.1 mg/g for Pb2C) (Hadi et al., 2015)....

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Journal ArticleDOI
TL;DR: It is evident from the literature survey that polyaniline provides a better opportunity for scientists for the effective removal of various dye, and their adsorption capacities with their experimental conditions have been compiled.
Abstract: Several industries release varying concentration of dye-laden effluent with substantial negative consequences for any receiving environmental compartment. The control of water pollution and tighter restriction on wastewater discharge directly into the environment to reduce the potential ecotoxicological effect of dyes is forcing processors to retreat and reuse process water and chemicals. Among the different available technologies, the adsorption process has been recognized to be one of the finest and cost-effective wastewater treatment technologies. Various adsorbents have been utilized to remove toxic dyes from water and wastewater. Here, we review the application of polyaniline-based polymeric adsorbent for the adsorption of dyes which have been received considerable attention. To date, various modifications of polyaniline have been explored to improve the adsorption properties. Review on the application of polyaniline for adsorption of dyes has not been present till date. This article provides relevant literature on the application of various polyaniline composites for removing dyes, and their adsorption capacities with their experimental conditions have been compiled. It is evident from the literature survey that polyaniline provides a better opportunity for scientists for the effective removal of various dye.

197 citations


Cites background from "Removal of heavy metals from emergi..."

  • ...…al. 2017), polystyrene (Pan et al. 2009), polyurethane (Sultan 2017) starch (de Azevedo et al. 2017), alginate (Pettignano et al. 2017), cellulose (Malik et al. 2017), and acrylamide (Didehban et al. 2017) in their pure orTa bl e 2 (c on tin ue d) A ds or be nt D ye E xp er im en ta lc on di…...

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References
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Journal ArticleDOI
TL;DR: The number and variety of known compounrjs between proteins and small molecules are increasing rapidly and make a fascinating story as discussed by the authors, and there are many compounds of serum albumin, which was used during the war by many chemists, most of whom found at least one 6ew compound.
Abstract: The number and variety of known compounrjs between proteins and small molecules are increasing rapidly and make a fascinating story. For instance, there are the compounds of iron, which is carried in our blood plasma by a globulin, two atoms of iron to each molecule of globulin held in a rather tight salt-lie binding? which is stored as ferric hydroxide by ferritin much as water is held by a sponge? and which functions in hemoglobin, four iron atoms in tight porphyrin complexes in each protein molecule. Or, there are many compounds of serum albumin, which was used during the war by many chemists, most of whom found at least one 6ew compound. This molecule, which has about a hundred carboxyl radicals, each of which can take on a proton, and about the same number of ammonium radicals, each of which can dissociate a proton, has one single radical which combines with mercuric ion so firmly that two albumin molecules will share one mercury atom if there are not enough to go a r ~ u n d . ~ At the present stage of rapid growth of known compounds, it seems more profitable for me to make no attempt to catalogue the various classes of compounds, but to discuss the general principles involved, in the hope that this will make more useful the information which is accumulating so rapidy from so many laboratories. We want to know of each molecule or ion whicb can combine with a protein molecule, /‘How many? How tightly? Where? Why?” The answer to the first two questions, and sometimes to the third, can be furnished by the physical chemist, but he will often need to team with an organic chemist to determine the effect of altering specified groups to find if they are reactive. The determination of function iç a complicated problem which may be the business of the physiologist or physiological chemist. But the answers to both of the more complicated problems will depend on the answers to the simpler questions, “HOW many?” and “How tightly bound?” If the various groups on a protein molecule act independently, we can apply the law of mass action as though each group were on a separate molecule,4 and the strength of binding can be expressed as the constant for each group. Often, a single constant will express the behavior of severa1 groups. If the constants are widely spread, as those for the reaction of hydrogen ion with carboxylate ions, with imidazoles and with amines, the interpretation is simple. If the separation is less, it is very difficult to distinguish the case of different intrinsic affinities from the case of interaction among the groups. We know that such interaction occurs in simple moleculeç in which a reac-

20,127 citations

Journal ArticleDOI
TL;DR: Hydrogen Production by Water−Gas Shift Reaction 4056 4.1.
Abstract: 1.0. Introduction 4044 2.0. Biomass Chemistry and Growth Rates 4047 2.1. Lignocellulose and Starch-Based Plants 4047 2.2. Triglyceride-Producing Plants 4049 2.3. Algae 4050 2.4. Terpenes and Rubber-Producing Plants 4052 3.0. Biomass Gasification 4052 3.1. Gasification Chemistry 4052 3.2. Gasification Reactors 4054 3.3. Supercritical Gasification 4054 3.4. Solar Gasification 4055 3.5. Gas Conditioning 4055 4.0. Syn-Gas Utilization 4056 4.1. Hydrogen Production by Water−Gas Shift Reaction 4056

7,067 citations


Additional excerpts

  • ...…41.7 52.2 6.1 23.3 Demirbas (2009) and Abbasi and Abbasi (2010) Rye grass 49.1 41.4 9.5 Abbasi and Abbasi (2010) Sweet sorghum grass 50.6 24.7 25.0 Huber et al. (2006) Timothy grass 38.0 33.1 28.9 Naik et al. (2010) Stalks Corn stalk 49.0 37.9 13.1 10.5 Raveendran et al. (1995), Kristensen (1996)…...

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  • ...…52.7 15.4 31.9 2.2 Huber et al. (2006) Oak 58.4 31.4 10.2 Shen et al. (2009) Pine 48.1 23.5 28.4 3.9 Kristensen (1996), Tillman and Harding (2004), Huber et al. (2006) and Shen et al. (2009) Softwood 43.3 27.4 29.3 Kristensen (1996), McKendry (2002) and Demirbas (2009) Spruce 43.6 27.4 29.0 1.8…...

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  • ...…Kataki and Konwer (2001) Birch 50.2 32.8 17.0 3.0 Kristensen (1996), Tillman and Harding (2004) and Shen et al. (2009) Eucalyptus 52.7 15.4 31.9 2.2 Huber et al. (2006) Oak 58.4 31.4 10.2 Shen et al. (2009) Pine 48.1 23.5 28.4 3.9 Kristensen (1996), Tillman and Harding (2004), Huber et al.…...

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Journal ArticleDOI
TL;DR: It is evident from the literature survey articles that ion-exchange, adsorption and membrane filtration are the most frequently studied for the treatment of heavy metal wastewater.

6,844 citations


"Removal of heavy metals from emergi..." refers background in this paper

  • ...It is becoming a popular technique, because in this process the adsorbent can be reused and metal recovery is possible (Barakat 2011; Fu and Wang 2011; Zamboulis et al. 2011)....

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  • ...This technique removes oils, suspended solids, heavy metals, and organic and inorganic materials (Barakat 2011; Fu and Wang 2011)....

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Journal ArticleDOI
TL;DR: The potential of a restored landfill site to act as a biomass source, providing fuel to supplement landfill gas-fuelled power stations, is examined, together with a comparison of the economics of power production from purpose-grown biomass versus waste-biomass.

4,162 citations


Additional excerpts

  • ...…29.6 20.5 11.0 Sander (1997) and Abbasi and Abbasi (2010) Wheat straw 44.5 33.2 22.3 12.4 Raveendran et al. (1995), Kristensen (1996), Sander (1997), McKendry (2002), Demirbas (2004), Prasad et al. (2007), Abbasi and Abbasi (2010), Naik et al. (2010) and Tamaki and Mazza (2010) Wheat straw 31.5…...

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  • ...…23.5 28.4 3.9 Kristensen (1996), Tillman and Harding (2004), Huber et al. (2006) and Shen et al. (2009) Softwood 43.3 27.4 29.3 Kristensen (1996), McKendry (2002) and Demirbas (2009) Spruce 43.6 27.4 29.0 1.8 Tillman and Harding (2004) Leaves Albizzia leaves 25.3 44.6 30.1 3.0 Kataki and…...

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Journal ArticleDOI
TL;DR: In this article, the authors reviewed the recent developments and technical applicability of various treatments for the removal of heavy metals from industrial wastewater and evaluated their advantages and limitations in application, including adsorption on new adsorbents, membrane filtration, electrodialysis, and photocatalysis.

2,419 citations


"Removal of heavy metals from emergi..." refers background in this paper

  • ...It is becoming a popular technique, because in this process the adsorbent can be reused and metal recovery is possible (Barakat 2011; Fu and Wang 2011; Zamboulis et al. 2011)....

    [...]

  • ...This technique removes oils, suspended solids, heavy metals, and organic and inorganic materials (Barakat 2011; Fu and Wang 2011)....

    [...]