Studies on the Performance of Ethylamine-Modified Chitosan Carbonized Rice Husk Composite Beads for Adsorption of Metal Ion

2013 ◽  
Vol 17 (2) ◽  
pp. 97-106 ◽  
Author(s):  
Sivaraju Sugashini ◽  
Khadhar Mohamed Meera Sheriffa Begum
Keyword(s):  
Rice Husk ◽  
Metal Ion ◽  
Modified Chitosan ◽  
Composite Beads

scholarly journals Column Adsorption Studies for the Removal of Cr(VI) Ions by Ethylamine Modified Chitosan Carbonized Rice Husk Composite Beads with Modelling and Optimization

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
S. Sugashini ◽  
K. M. Meera Sheriffa Begum
Keyword(s):  
Experimental Data ◽  
Adsorption Capacity ◽  
Rice Husk ◽  
Metal Ion ◽  
Ion Concentration ◽  
Adsorbent Dosage ◽  
Adsorption Studies ◽  
Continuous Adsorption ◽  
Modified Chitosan ◽  
Composite Beads

The objective of this present study is the optimization of process parameters in adsorption of Cr(VI) ions by ethylamine modified chitosan carbonized rice husk composite beads (EAM-CCRCBs) using response surface methodology (RSM) and continuous adsorption studies of Cr(VI) ions by ethylamine modified chitosan carbonized rice husk composite beads (EAM-CCRCBs). The effect of process variables such as initial metal ion concentration, adsorbent dosage and pH were optimized using RSM in order to ensure high adsorption capacity at low adsorbent dosage and high initial metal ion concentration of Cr(VI) in batch process. The optimum condition suggested by the model for the process variable such as adsorbent dosage, pH and initial metal ion concentration was 0.14 g, 300 mg/L and pH2 with maximum removal of 99.8% and adsorption capacity of 52.7 mg/g respectively. Continuous adsorption studies were conducted under optimized initial metal ion concentration and pH for the removal of Cr(VI) ions using EAM-CCRCBs. The breakthrough curve analysis was determined using the experimental data obtained from the continuous adsorption. Continuous adsorption modelling such as bed depth service model and Thomson model were established by fitting it with experimental data.

Removal of Telon blue AFN in solution with the crosslinked hitosan-rice husk ash composite beads using batch reactor

2019 ◽  
Vol 17 ◽  
pp. 1472-1478
Author(s):  
Wipharat Chuachuad Chaiyasith ◽  
Watchaleepron Kaewjit ◽  
Ratana Sananmuang
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Batch Reactor ◽  
Composite Beads

scholarly journals The Analysis of Low-Cost Pb(II) Adsorbents using Batch Method of Solid-Phase Spectrophotometry

2021 ◽  
Vol 1 (1) ◽  
pp. 38-45
Author(s):  
Sulistyo Saputro ◽  
Ashadi Ashadi ◽  
Lina Mahardiani ◽  
Nurma Yunita Indriyanti ◽  
Maria Ciptaning Sabdo Kawedhar ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Rice Husk ◽  
Natural Zeolite ◽  
Metal Ion ◽  
Solid Phase ◽  
Health Problems ◽  
Single Beam ◽  
Adsorption Processes ◽  
Simulated Wastewater ◽  
Solid Phase Spectrophotometry

Heavy metal pollutants contained in wastewater can cause health problems for living things around. Minor to fatal health problems can occur due to heavy metal poisoning, mainly caused by Pb(II) metal.. This study aimed to determine the optimum mass combination of rice husk and zeolite to adsorb Pb(II) metal ions in simulated wastewater, and to determine the sensitivity of the analysis method. This study used Solid Phase Spectrophotometry (SPS) to determine the decrease in Pb(II) metal ion levels after being adsorbed by activated carbon from rice husks and zeolites. This study used an experimental method with simulated wastewater samples containing Pb(II) at several concentrations. Pb(II) adsorption processes by rice husk and natural zeolite used various adsorbents' mass ratios. The adsorbents were characterized by using Fourier-Transform Infra-Red (FTIR) Spectrophotometry. Pb(II) analysis during adsorption processes used a single beam UV-visible Spectrophotometer for Solid-Phase Spectrophotometry. This study indicates that the combination of adsorbent from rice husk and natural zeolite can properly adsorb Pb(II) ions with an adsorption capacity of 0.75 μg g-1 and 0.025 μg L-1 for the LoD of the instrument.

The Analysis of Low-Cost Pb(II) Adsorbents using Batch Method of Solid-Phase Spectrophotometry

2021 ◽  
Vol 7 (1) ◽  
pp. 38-45
Author(s):  
Sulistyo Saputro ◽  
Ashadi Ashadi ◽  
Lina Mahardiani ◽  
Nurma Yunita Indriyanti ◽  
Maria Ciptaning Sabdo Kawedhar ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Rice Husk ◽  
Natural Zeolite ◽  
Metal Ion ◽  
Solid Phase ◽  
Health Problems ◽  
Single Beam ◽  
Adsorption Processes ◽  
Simulated Wastewater ◽  
Solid Phase Spectrophotometry

Heavy metal pollutants contained in wastewater can cause health problems for living things around. Minor to fatal health problems can occur due to heavy metal poisoning, mainly caused by Pb(II) metal.. This study aimed to determine the optimum mass combination of rice husk and zeolite to adsorb Pb(II) metal ions in simulated wastewater, and to determine the sensitivity of the analysis method. This study used Solid Phase Spectrophotometry (SPS) to determine the decrease in Pb(II) metal ion levels after being adsorbed by activated carbon from rice husks and zeolites. This study used an experimental method with simulated wastewater samples containing Pb(II) at several concentrations. Pb(II) adsorption processes by rice husk and natural zeolite used various adsorbents' mass ratios. The adsorbents were characterized by using Fourier-Transform Infra-Red (FTIR) Spectrophotometry. Pb(II) analysis during adsorption processes used a single beam UV-visible Spectrophotometer for Solid-Phase Spectrophotometry. This study indicates that the combination of adsorbent from rice husk and natural zeolite can properly adsorb Pb(II) ions with an adsorption capacity of 0.75 μg g-1 and 0.025 μg L-1 for the LoD of the instrument.

Study on the Application of Modified Chitosan in Cherry Preservation

2012 ◽  
Vol 479-481 ◽  
pp. 124-128
Author(s):  
Yu Feng Li ◽  
Shi Fu Zhu ◽  
Xue Jun Zhu
Keyword(s):  
Acetic Acid ◽  
Metal Ion ◽  
Optimal Concentration ◽  
Soluble Solids ◽  
Metal Ion Complexes ◽  
Modified Chitosan ◽  
Titratable Acid ◽  
Liquid Reaction ◽  
Vitamine C ◽  
Solid Liquid

To obtain a good Cherry preservative, the author prepared acetic acid Chitosan and metal ion complexes with solid-liquid reaction. Besides, the Cherry preservative was prepared by modified Chitosan materials. It was obtained that the optimal concentration of chitosen acetate for fresh cherries is 20g/l by studying effect of different concentrations of preservative on the storage of Cherry and its preservation time was 24 days. It also found that it owned better preservation effect with adding metal ion and Zn compound preservative had the best preservation performance among all experimental ion compound preservation. The experiment results showed that the preservative which prepared by Chitosan had excellence properties of extending Cherries storage periods、lowing the loss of Cherry fruit during storage、slowing the forming of Cherry soluble solids and the decreasing of titratable acid and vitamine C, but also reducing Cherry metabolism.

scholarly journals Preparation and Antimicrobial Properties of Alginate and Serum Albumin/Glutaraldehyde Hydrogels Impregnated with Silver(I) Ions

Chemistry ◽  
2021 ◽  
Vol 3 (2) ◽  
pp. 672-686
Author(s):  
Louise Gallagher ◽  
Alanna Smith ◽  
Kevin Kavanagh ◽  
Michael Devereux ◽  
John Colleran ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Serum Albumin ◽  
Calcium Alginate ◽  
Metal Ion ◽  
Antimicrobial Properties ◽  
Hydrogel Beads ◽  
Composite Beads ◽  
Antifungal Effects ◽  
Propylene Glycol Alginate ◽  
Antibacterial And Antifungal

Calcium alginate (CaALG) hydrogel beads and two sets of composite beads, formed from a combination of calcium alginate/propylene glycol alginate/human serum albumin (CaALG/PGA/HSA) and from calcium alginate with the quaternary ammonium salt, (3-(trimethoxysilyl)propyl)-octadecyldimethylammonium chloride (QA), (CaALG/QA), were prepared. Bovine serum albumin (BSA) was condensed with glutaraldehyde (GLA) to form a BSA/GLA hydrogel. The corresponding Ag+-containing gels of all of the above hydrogels were also formed, and slow leaching of the biocidal transition metal ion from the gels bestowed broad spectrum antimicrobial activity. In the absence of added Ag+, CaALG/QA was the only material to deliver marginal to moderate antibacterial and antifungal effects. The Ag+ impregnated hydrogel systems have the potential to maintain the antimicrobial properties of silver, minimising the risk of toxicity, and act as reservoirs to afford ongoing sterility.

scholarly journals A Study on Heavy Metal Ion Adsorption, Antibacterial and Anticancer Activities of Sawdust Chitosan Activated Carbon

2020 ◽  
pp. 56-69
Author(s):  
K. Kayalvizhi ◽  
N. M. I. Alhaji ◽  
D. Saravanakkumar ◽  
A. Ayeshamariam
Keyword(s):  
Activated Carbon ◽  
Metal Ion ◽  
Low Cost ◽  
Activation Parameters ◽  
Diffusion Method ◽  
Maximum Adsorption Capacity ◽  
Anticancer Activities ◽  
Disk Diffusion Method ◽  
Composite Beads ◽  
Surface Modified

Sawdust-Chitosan Composite beads (SDCCB), a low-cost non-conventional surface modified activated carbon, has been used for the efficient removal of Cu(II) ions from aqueous solutions. Surface morphology of the sample has been characterized by XRD, SEM, EDAX and FTIR analyses. Batch experiments have been conducted spectrophotometrically in order to determine the maximum adsorption capacity and influence of physicochemical parameters. The experimental data has been fitted with various isotherm and kinetic models to predict the conditions for maximum adsorption. The activation parameters evaluated for this adsorption process propose the adsorption mechanism as feasible, spontaneous, endothermic and increased randomness. Also, the antimicrobial and anticancer activities of SDCCB have been screened by disk diffusion method and MTT assay, respectively.

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