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Over the last few decades, biosorption has been widely and successfully studied for removal of heavy metals and ionic dyes by using various types of biomasses such as bacteria, fungi, algae, agricultural and industrial byproducts, and other biomaterials (Vijayaraghavan and Yun, 2008; Park et al., 2010a).
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The microbial adsorbents and modified composites of agricultural biomasses show improved performance, stability, reusability, and effectively immobilize heavy metals from soil and water. In the future, researchers may consider the modified composites, encapsulated biosorbents for soil and water remediation. Citing Literature Volume 173, Issue 1
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08/07/2015The mixture of custard apple seeds and Aspergillus nigerwas used as biosorbents for the removal of chromium(VI) and nickel(II) from the contaminated water. The batch biosorption process was carried out and it was influenced by the different operating parameters such as initial metal ion concentration, pH, temperature, and
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11-06-2014The biosorbents were produced from the freshwater macroalga Oedogonium sp. (Chlorophyta) that is native to the industrial site from which the effluent was sourced, and which has been intensively cultivated to provide a feed stock for biosorbents. The effect of pH and exposure time on sorption was also assessed.
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Honeydew rind was used as biosorbent material to remove zinc in the wastewater. Characterization and optimization study were carried out. The optimum condition for pH, biosorbent amount, concentration of wastewater and contact time are at pH 6, 1.5g adsorbent, 400 mg/L zinc and 30 minutes contact time respectively 63% zic removal.
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09/04/2011The amount of used biosorbent was 0.1 g in 30 mL adsorption medium. The amount of adsorbed heavy metal ions per unit biosorbent (mg metal ions/g dry biosorbent) was obtained by using the following expression q = left [ {left ( { {C_ {text {o}}} - C} right) times V} right]/m (2)
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18-07-2018Biosorption capacity (mg/g) of the biosorbent can be defined as the amount of biosorbate (metal ions) biosorbed per unit weight of the biosorbent and can be expressed by using the following mass balance equation: qe = Ci − Ce V m E1 The percent biosorption (R%) known as biosorption efficiency for the metal was evaluated from the following
WhatsApp:+861732942010204-08-1997Metals can be dispersed, both naturally and by man's activities, into any of the Earth's elements - soil, water or air. Biological techniques for removing metal pollutants from soil, air or water are now attracting great interest, both because they are seen as more environmentally friendly than chemical treatments, and because, in some cases at lea
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15-04-2008A comparison of the maximum sorption capacity of several untreated biomaterial-based residues showed that coffee husks are suitable candidates for use as biosorbents in the removal of heavy metals from aqueous solutions. Publication types Research Support, Non-U.S. Gov't MeSH terms Coffee*
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01/01/2020For desorption studies, 0.1 g of biosorbent was loaded with 25 mL of 100 mg L −1 lead (II) solution. Lead (II) loaded biosorbents were collected, and gently washed with distilled water to remove any unadsorbed lead (II) ions. The sorbents were contaminated with 25 mL of 0.01 M EDTA, 0.1 M HCl and 0.1 M HNO 3 solutions at 25 C.
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28-02-2020'Biosorbents' in the context of this paper refers to special type of adsorbents that have not undergone any high temperature process (e.g. carbonisation and pyrolysis) and are simply grinded from the source leaves and chemically modified (in some cases) at ambient or near-ambient conditions. Overview of scanning electron microscopy
WhatsApp:+861732942010201-12-2017moreover, we propose the following important goals for future research: (1) determine the adsorption potential of sugarcane bagasse at pilot and industrial scales, (2) demonstrate the efficacies of
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14-11-2018it can be concluded that: (1) chemical modifications led to a satisfactory improvement of the removal capability of leaf-based adsorbents, (2) the maximum monolayer adsorption, obtained from langmuir isotherm, ranged between 3.9–300 and 7.8–345 mg/g for raw and modified leaf biosorbents, respectively, (3) in most cases the langmuir isotherm and
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biosorbents have been explored for removal of heavy metals. In this study an efficient and low cost biosorbent has been prepared from consumed tealeaves by amination. The biosobent is characterized by its elemental analysis and also analyzed for its major constituents. The introduction of amino group is
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19/12/2019research progress during graduate period fig. 2-3 effect of ph on the qe of biosorbents table 2-1 the adsorption capacity of fluoride q0 of activated alumina was 1.45 mg/g at ph 7 (jagtap, 2012). 2.2 removal of fluoride from drinking water using tea waste loaded with al/fe oxides ph of drinking water: 6.0-8.0 research progress 2.2 removal of
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It is made by carbon sequestration, which uses the opposite technique as for creating activated carbon. It is made by heating biomass in the absence of oxygen. The two filters allow for biosorption of different types of contaminants due to their chemical compositions—one with infused oxygen and the other without. Figure 1.
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27-08-2021This review presents the most recent advances related the main polymers such as polysaccharides and microbial cells used for biosorbents production; a detailed analysis of the biosorption capability of algal, bacterial and fungal biomass; as well as a series of specific applications for retaining metal ions and organic dyes.
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07-07-2014A biosorbent may be considered "low-cost" if it satisfied the following conditions: (i) abundance in nature, (ii) requirement for minor or no treatment, and (iii) being a waste material or a by-product from other industries [ 10 ]. The challenge here is to choose the appropriate biosorbent that suits the target substance.
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07-04-2021Biosorption, as a subset of adsorption, refers to the physicochemical adsorption and ion exchange occurring on the cellular surface of organisms. Because this phenomenon does not involve metabolism, it occurs in all cells, whether living or dead. Biosorption occurs through the binding to materials derived from various biomasses.
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15-04-2008Untreated coffee husks as biosorbents for the removal of heavy metals from aqueous solutions The objective of this work was to propose an alternative use for coffee husks (CH), a coffee processing residue, as untreated sorbents for the removal of heavy metal ions from aqueous solutions.
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02/09/2015Abstract In this study, we report three novel low-cost biosorbents based on modified peanut shells (TEPA-PS, TETA-PS and DETA-PS) prepared by epichlorohydrin and tetraethylenepentamine (TEPA), triethylenetetramine (TETA), or diethylenetriamine (DETA) as the etherifying and crosslinking agents, respectively.
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For treatment purpose, 200 g of powdered biosorbent was soaked in solution containing 1000 ml ethanol, 500 mL NaOH (0.5 mol/L), and 500 mL CaCl 2 (1.5 mol/L) for 24 hours [ 1, 11 – 14 ]. After repeated filtration and decantation of biosorbent, it was first dried in open air and then oven dried to get its constant mass.
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13/01/2022According to breakthrough curves, under best conditions (the seventh mode), nano-biosorbents could remove 98.05% and 97.92% of iron and manganese ions, respectively. The maximum equilibrium capacity of the adsorption column (mg/g) was 256.56 for iron and 244.79 for manganese. Graphical abstract Introduction
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The best adsorption parameters found in the experimental tests are as follows: pH 4, temperature 35C, initial concentration of AF solution of 40 mg L − 1, and modified biosorbents of 400 mg L − 1. In practical application, pH 5 and a temperature of 25C could hold promise to
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01/02/2015Traditionally, three representative methods are used to remove polymer pollutants from wastewater: (a) adsorption using solid adsorbents such as activated carbon, (b) detoxication treatments such
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The best adsorption parameters found in the experimental tests are as follows: pH 4, temperature 35C, initial concentration of AF solution of 40 mg L − 1, and modified biosorbents of 400 mg L − 1. In practical application, pH 5 and a temperature of 25C could hold promise to adsorb the dye.
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11/06/2014The biosorbents were produced from the freshwater macroalga Oedogonium sp. (Chlorophyta) that is native to the industrial site from which the effluent was sourced, and which has been intensively cultivated to provide a feed stock for biosorbents. The effect of pH and exposure time on sorption was also assessed.
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18-07-2018Biosorption can be defined as a simple metabolically passive physicochemical process involved in the binding of metals ions (biosorbate) to the surface of the biosorbent which is of biological origin [ 25 ]. Biological removal includes the use of microorganisms, plant-derived materials, agriculture or industrial wastes, biopolymers, and so on.
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1 Typical low cost biosorbents for adsorptive removal of specific organic pollutants from water Van Son Trana, Huu Hao Ngoa*, Wenshan Guoa, Jian Zhang b, Shuang Liangb, Cuong Ton- Thatc, Xinbo Zhangd aCentre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Broadway, NSW 2007
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maban modern mining jeddah - massage-bebe92.fr. Aug 23 2019 The kaolinite dry mining process is a simple and economical process The ore is crushed to 254mm by a hammer crusher and fed into the cage mill to reduce the particle size to 635mm The hot air in the cage mill reduces the moisture of the kaolin from about 20 to 10 Beneficiation Process of
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02-09-2015In this study, we report three novel low-cost biosorbents based on modified peanut shells (TEPA-PS, TETA-PS and DETA-PS) prepared by epichlorohydrin and tetraethylenepentamine (TEPA), triethylenetetramine (TETA), or diethylenetriamine (DETA) as the etherifying and crosslinking agents, respectively.
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19-12-2019research progress during graduate period fig. 2-3 effect of ph on the qe of biosorbents table 2-1 the adsorption capacity of fluoride q0 of activated alumina was 1.45 mg/g at ph 7 (jagtap, 2012). 2.2 removal of fluoride from drinking water using tea waste loaded with al/fe oxides ph of drinking water: 6.0-8.0 research progress 2.2 removal of
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02-03-2019Additionally, the chitin/lignin materials were studied from the perspective of waste water treatment. The synthetic method presented in this work shows an attractive and facile route for producing low-cost chitin/lignin biosorbents with high efficiency of nickel and cadmium adsorption (88.0% and 98.4%, respectively).
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01-06-2006PDF | On Jun 1, 2006, Kanamadi R D and others published Low cost biosorbents for dye removal | Find, read and cite all the research you need on ResearchGate
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Biosorption-based processes offer a number of advantages including low production cost of adsorbents, simple operation, high efficiency, improved selectivity for specific metals of interest, short operation time, no generation of secondary refractory wastes, easy treatment of spent adsorbents by incineration and so forth.
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In this review, based on the literature and our research results, we highlight three types of novel methods for biosorbents removal of heavy metals: chemical modification of biosorbents; biomass and chemical materials combination; multiple biomass complex systems.
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Chemical, Structural and Elemental Characterization of Biosorbents
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The biosorbent includes bacterial aggregates of Bacillus sp. VCHB-10, deposited as NRRL-B-30881, and treated with polyethyleneimine and glutaraldehyde. Among the metals in their cationic form, the
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07/04/2021Biosorption, as a subset of adsorption, refers to the physicochemical adsorption and ion exchange occurring on the cellular surface of organisms. Because this phenomenon does not involve metabolism, it occurs in all cells, whether living or dead. Biosorption occurs through the binding to materials derived from various biomasses.
WhatsApp:+861732942010202-09-2015Abstract In this study, we report three novel low-cost biosorbents based on modified peanut shells (TEPA-PS, TETA-PS and DETA-PS) prepared by epichlorohydrin and tetraethylenepentamine (TEPA), triethylenetetramine (TETA), or diethylenetriamine (DETA) as the etherifying and crosslinking agents, respectively.
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