scholarly journals STUDI SERAPAN ION SENG(II) OLEH BIOMASSA MIKROALGA (Tetraselmis chuii)

2015 ◽  
Vol 2 (2) ◽  
pp. 107
Author(s):  
Bahrizal ◽  
Rahadian Z
Keyword(s):  
Metal Ion ◽  
Absorption Spectrometry ◽  
Zinc Ion ◽  
Ion Concentration ◽  
Ion Adsorption ◽  
Metal Ion Adsorption ◽  
Tetraselmis Chuii ◽  
Optimum Ph ◽  
The Difference ◽  
Varied Concentration

ABSTRACT In the present work, the process of zinc-ion adsorption by T. chuii biomass have been investigated. This investigation intend to determinate capacity of adsorption the biomass for zinc-ion in water. A weight of 100 mg biomass was put into 6 ppm of the metal-ion solution whose pH varied from 5.0 to 7.0. Then, these solutions were stirred for 30 minutes. After filtering, the metal-ion concentration in the filtrate was determined by atomic absorption spectrometry. The amount of ion adsorbed by the biomass was taken as the difference between the initial and final concentration of the solution. Further, the same method was carried out to the varied concentration. The result showed, the optimum pH for metal-ion adsorption by the biomass is 5.5, having adsorption value 1.106 mg/g. Capacity of zinc-ion adsorption was obtained by varied concentration, yielded value of 3.557 mg/g.   Keywords : T. chuii, biomass, adsorption, spectrometry   

scholarly journals STUDI KESEIMBANGAN ADSORPSI MERKURI(II) PADA BIOMASSA DAUN ENCENG GONDOK (Eichhornia crassipes)

ALCHEMY ◽  
2012 ◽  
Author(s):  
Muhammad Chalid Al-ayubi ◽  
Himmatul Barroroh ◽  
Diana Candra Dewi
Keyword(s):  
Adsorption Capacity ◽  
Adsorption Energy ◽  
Langmuir Isotherm ◽  
Metal Ion ◽  
Eichhornia Crassipes ◽  
Leaf Biomass ◽  
Ion Adsorption ◽  
Mercury Adsorption ◽  
Metal Ion Adsorption ◽  
Optimum Ph

Metal ion adsorption research with utilizing Eichhornia crassipes leaf biomass has been done. Metal ions which are ever researched are Cr, Cd, Pb and Ni, but research with utilizing Hg metal ion is never done, so need to be implemented a mercury adsorption research to eichhornia crassipes leaf biomass. Because pH solution is very influential to metal ion adsorption by biomass, so in this research is inspected determining of optimum pH to mercury adsorption. This research is experimental research which is started with determining of optimum pH, this determining of optimum pH is implemented with way of interacting 60 mmg/L mercury metal ion with 0,1 gr eichhornia crassipes leaf biomass for 60 minutes at range of pH 2, 3, 4, 5, 6, 6, 4, 6, 7, 7 and 8, then continued with control solution production to know the solubility of mercury in every pH. The determination of adsorption capacity, adsorption constanta and adsorption energy are implemented with way of interacting eichhornia crassipes leaf biomass with mercury metal ion by 20, 30, 40, 50, 60, 70, 80, 90, 100 and 150 mmg/L variation of concentration for 60 minutes in pH optimum. Data the result of experiment then processed using the similarity of Langmuir isotherm and Freunlich.. The result of the research indicates that pH 6 is mercury adsorption optimum pH in eichhornia crassipes leaf biomass. The mercury isotherm adsorption in eichhornia crassipes leaf biomass takes a part of the similarity of langmuir isotherm with point R2 = 0,982, from the similarity of langmuir isotherm gotten adsorption capacity (Xm) in the mount of 4, 806 x 10-5 mol/gr with adsorption constanta (K) 27130,85 mol/L and adsorption energy (E) in the mount of 25,46079 kJ/mol.<br /><br />

Investigation of Interaction Effects of Environmental Conditions on Improvement of Zn Heavy Metal Adsorption Mechanism by Na-Nano Bentonite

2014 ◽  
Vol 1025-1026 ◽  
pp. 824-830 ◽  
Author(s):  
Shima Barakan ◽  
Gholamreza Karimi
Keyword(s):  
Metal Ion ◽  
Adsorption Mechanism ◽  
Ion Concentration ◽  
Ion Adsorption ◽  
Heavy Metal Adsorption ◽  
Stirrer Speed ◽  
Effective Parameters ◽  
Metal Ion Adsorption ◽  
Design Software ◽  
Central Composite

To improve adsorption mechanism and to increase adsorption capability for Na-bentonite rather than Ca-bentonite origin, Nano-bentonite sample with Na activation was used. Also for investigation of environmental effect, some parameters such as pH, adsorbent concentration, metal ion concentration and stirrer speed on the adsorption rate of Zn used Experimental Design software and Central Composite Design (CCD) model. CCD is a powerful model that based on minimization of errors and exprement repeat. This model usually was used when there aren’t suitable knowledge about investigating factors or their borderline. In this research 30 experiments were designed for Na-Bentonite samples and the effective parameters on Zn adsoption rate were denoted by CCD model analysis results. Based on obtained results, pH and adsorbent concentration introduced as the most effective parameters. The pH and metal ion concentration is only valid interaction effect on recovery of metal ion adsorption. Finally, the optimized condition of each parameter for effective adsoption process was determined and possible conditions for access to adsorption recovery up to 99 percent was prepared.

scholarly journals Preparation, characterization and application of CS@PDA@Fe3O4 nanocomposite as a new magnetic nano-adsorber for the removal of metals and dyes in wastewater

RSC Advances ◽  
2021 ◽  
Vol 11 (38) ◽  
pp. 23679-23685
Author(s):  
Xingjing Zhang ◽  
Baohe Li ◽  
Xiaoqian Han ◽  
Nong Wang
Keyword(s):  
Heavy Metal ◽  
Metal Ion ◽  
Heavy Metal Ion ◽  
Ion Adsorption ◽  
Metal Ion Adsorption

Synthesis of CS@PDA@Fe3O4 nanocomposite and heavy metal ion adsorption.

Centrifugal Spinning of Lignin Amine/Cellulose Acetate Nanofiber for Heavy Metal Ion Adsorption

2021 ◽  
Author(s):  
Lei Xia ◽  
Hui Feng ◽  
Quping Zhang ◽  
Xiaohui Luo ◽  
Pengfei Fei ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Cellulose Acetate ◽  
Metal Ion ◽  
Heavy Metal Ion ◽  
Ion Adsorption ◽  
Metal Ion Adsorption ◽  
Centrifugal Spinning ◽  
Lignin Amine

Impact of the degree of functionalization of graphene oxide on the electrochemical charge storage property and metal ion adsorption

RSC Advances ◽  
2014 ◽  
Vol 4 (107) ◽  
pp. 62737-62745 ◽  
Author(s):  
Mahesh M. Kadam ◽  
Omkar R. Lokare ◽  
Kota V. M. K. Kireeti ◽  
Vilas G. Gaikar ◽  
Neetu Jha
Keyword(s):  
Graphene Oxide ◽  
Metal Ion ◽  
Charge Storage ◽  
Ion Adsorption ◽  
Oxidizing Agent ◽  
Metal Ion Adsorption ◽  
Storage Property

The increase in oxygen functionalities on GO with increasing use of oxidizing agent results in (i) amplification of redox pseudocapacitive current and (ii) improves metal ion adsorption.

scholarly journals Cadmium Ion Biosorption by the Thermophilic Bacteria Geobacillus stearothermophilus and G. thermocatenulatus

2006 ◽  
Vol 72 (6) ◽  
pp. 4020-4027 ◽  
Author(s):  
Adrian Hetzer ◽  
Christopher J. Daughney ◽  
Hugh W. Morgan
Keyword(s):  
Metal Ion ◽  
Functional Group ◽  
Thermophilic Bacteria ◽  
Toxicity Tests ◽  
Ion Adsorption ◽  
Geobacillus Stearothermophilus ◽  
Cadmium Ion ◽  
Thermophilic Microorganisms ◽  
Gram Positive Bacteria ◽  
Metal Ion Adsorption

ABSTRACT This study reports surface complexation models (SCMs) for quantifying metal ion adsorption by thermophilic microorganisms. In initial cadmium ion toxicity tests, members of the genus Geobacillus displayed the highest tolerance to CdCl2 (as high as 400 to 3,200 μM). The thermophilic, gram-positive bacteria Geobacillus stearothermophilus and G. thermocatenulatus were selected for further electrophoretic mobility, potentiometric titration, and Cd2+ adsorption experiments to characterize Cd2+ complexation by functional groups within and on the cell wall. Distinct one-site SCMs described the extent of cadmium ion adsorption by both studied Geobacillus sp. strains over a range of pH values and metal/bacteria concentration ratios. The results indicate that a functional group with a deprotonation constant pK value of approximately 3.8 accounts for 66% and 80% of all titratable sites for G. thermocatenulatus and G. stearothermophilus, respectively, and is dominant in Cd2+ adsorption reactions. The results suggest a different type of functional group may be involved in cadmium biosorption for both thermophilic strains investigated here, compared to previous reports for mesophilic bacteria.

scholarly journals Removal of Zinc ions from industrial wastewater with wool fibers

2010 ◽  
Vol 7 (3) ◽  
pp. 1193-1201
Author(s):  
Baghdad Science Journal
Keyword(s):  
Acid Concentration ◽  
Contact Time ◽  
Industrial Wastewater ◽  
Metal Ion ◽  
Low Cost ◽  
Zinc Ion ◽  
Ion Concentration ◽  
Natural Material ◽  
Zinc Ions ◽  
Wool Fibers

In this research, the efficiency of low-cost unmodified wool fibers were used to remove zinc ion from industrial wastewater. Removal of zinc ion was achieved at 99.52% by using simple wool column. The experiment was carried out under varying conditions of (2h) contact time, metal ion concentration (50mg/l), wool fibers quantity to treated water (70g/l), pH(7) & acid concentration (0.05M). The aim of this method is to use a high sensitive, available & cheep natural material which applied successfully for industrial wastewater& synthetic water, where zinc ion concentration was reduced from (14.6mg/l) to (0.07mg/l) & consequently the hazardous effect of contamination was minimized.

scholarly journals Highly Productive Synthesis, Characterization, and Fluorescence and Heavy Metal Ion Adsorption Properties of Poly(2,5-dimercapto-1,3,4-thiadiazole) Nanosheets

Polymers ◽  
2017 ◽  
Vol 10 (1) ◽  
pp. 24 ◽  
Author(s):  
Chao Li ◽  
Shaojun Huang ◽  
Chungang Min ◽  
Ping Du ◽  
Yi Xia ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ion ◽  
Adsorption Properties ◽  
Heavy Metal Ion ◽  
Ion Adsorption ◽  
Metal Ion Adsorption

Functional group effect of isoreticular metal–organic frameworks on heavy metal ion adsorption

2018 ◽  
Vol 42 (11) ◽  
pp. 8864-8873 ◽  
Author(s):  
Leili Esrafili ◽  
Vahid Safarifard ◽  
Elham Tahmasebi ◽  
M. D. Esrafili ◽  
Ali Morsali
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Metal Ion ◽  
Heavy Metal Ions ◽  
Functional Group ◽  
Metal Organic Frameworks ◽  
Ion Adsorption ◽  
Group Effect ◽  
Metal Ion Adsorption ◽  
Metal Organic

We examined adsorption behavior of some MOFs having different functional groups in their pillar structures for adsorption of some heavy metal ions.

Magnetically separable h-Fe3O4@Au/polydopamine nanosphere with a hollow interior: A versatile candidate for nanocatalysis and metal ion adsorption

2020 ◽  
Vol 398 ◽  
pp. 125571 ◽  
Author(s):  
Kezhu Xu ◽  
Jin Wu ◽  
Qunling Fang ◽  
Linfeng Bai ◽  
Jinyu Duan ◽  
...  
Keyword(s):  
Metal Ion ◽  
Ion Adsorption ◽  
Metal Ion Adsorption ◽  
Hollow Interior ◽  
Magnetically Separable
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