Acidic polysaccharide gels for selective adsorption of lead (II) ion

Dhakal, Rabindra Prasad; Ghimire, Kedar Nath; Inoue, Katsutoshi; Yano, Masayuki; Makino, Kenjiro

doi:10.1016/j.seppur.2004.07.016

Cited by 72 publications

(42 citation statements)

References 7 publications

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“…For the design purpose, isotherm models were analyzed and suitable model that can fit the data were obtained 14 . Biosorption isotherm is mostly essential to find the interactions of solutes with biosorbents and optimize an effective biosorbent.…”

Section: Equilibrium Isotherm Studymentioning

confidence: 99%

"Use of Plant Biomass for Removal of Malachite Green From Aqueous Solution and Optimization Using Central Composite Design (Ccd) "

2018

RJC

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Biosorption is the attractive technique of wastewater treatment to retain the dyes. Biosorption of Malachite Green (MG) using leaf biomass Plumbago Zeylanica (PZ) from an aqueous solution was studied using the batch technique. The batch analysis was accessed by altering the variables like time, pH, dye concentration, biosorbent dosage, average biosorbent size and temperature. The % removal of 93% was attained at 25mg/L of concentration for 50ml of an aqueous solution with a time of 45min, pH 9, the dosage of 0.1g and average biosorbent size of 63 µm having 303 K as temperature. By utilizing four models the equilibrium data were reviewed. The Langmuir model was the best fit with an R 2 value of 0.998. The kinetics data were evaluated by three models. The data was suitable to Pseudo-second order kinetics. Thermodynamic parameters evaluated are enthalpy change (∆H o ), entropy change (∆S o ) and free energy (∆G o ). The negative value of (∆H o ) represents an exothermic reaction. The operating conditions are optimized using Response Surface Methodology (RSM)

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Section: Equilibrium Isotherm Studymentioning

confidence: 99%

"Use of Plant Biomass for Removal of Malachite Green From Aqueous Solution and Optimization Using Central Composite Design (Ccd) "

2018

RJC

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“…Among these methods, adsorption is by far the most versatile and widely used method because of its low cost and ease of operation. A number of agricultural waste and by-products of cellulosic origin have been studied for their capacity to remove dyes from aqueous solutions, such as peanut hulls [4], maize bran [5], sawdust [6], sugar beet pulp [7], crab shell [8], cornstarch [9], rice husk [10], chitin [11], orange waste [12], lemon peel [13], granular kohlrabi peel [14],raw barley straw [15] and eggshell [16].…”

Section: Introductionmentioning

confidence: 99%

Removal of Methylene blue from aqueous solution by bioadsorption onto <i>Ricinus communis </i> epicarp Activated Carbon

Santhi

Manonmani²

2009

Chem. Eng. Res. Bull.

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Carbon prepared from the epicarp of Ricinus communis was used to remove a textile dye (methylene blue (MB)) from an aqueous solution by adsorption technique under varying conditions of agitation time, dye concentration, adsorbent dose and pH. Adsorption depended on solution pH, dye concentration, carbon concentration and contact time. Adsorption followed both Langmuir and Freundlich isotherm models. The adsorption capacity was found to be 62.5 mg/g at a neutral pH of 7 for the adsorbent size of 125-250 µm at room temperature (32±2• C). The kinetics of adsorption of MB obeys Pseudo-first order. The results in this study indicated that activated carbon from Ricinus communis was an attractive candidate for removing cationic dyes from the dye wastewater.

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“…There are a variety of natural organic polymeric materials with functionalities for adsorbing cationic metal ions in nature: acidic polysaccharides such as alginic acid and pectic acid [9], basic polysaccharides such as chitosan [10] and various proteins [11]. Furthermore, adsorption using various biomass wastes has attracted great attention in recent years [12].…”

mentioning

confidence: 99%

Environmentally Benign Adsorption Materials for Removing Arsenic from Aquatic Environment

Inoue¹,

Harada²,

Ghimire³

et al. 2018

AMPC

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Adsorptive removal of arsenic using adsorption gels prepared from orange and apple juice residues was reviewed by summarizing the authors' previous papers. Orange and apple juice residues contain a large amount of pectin, partly methyl-esterified pectic acid, which exhibits high affinity for high-valent metal ions such as iron(III), rare earths(III) and zirconium(IV). Anionic species of arsenic(III, V) are effectively and selectively adsorbed on pectic acid gel via loading these high-valent metal ions. Raw orange juice residue was saponified using calcium hydroxide to improve the loading capacity for these metal ions. It was found that zirconium(IV) exhibits the most suitable adsorption behaviors for arsenic(III, V). Similar result was obtained also for apple juice residue. An actual sample of acid mine drainage from the Horobetsu mine which contained a high concentration of iron and low concentration of arsenic, was tested using the adsorption gel prepared from orange juice residue and the results were compared with those from the current treatment process based on coprecipitation with iron hydroxide. The new process using the abovementioned adsorption gel was proposed for treatment of such acid mine drainage.

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Acidic polysaccharide gels for selective adsorption of lead (II) ion

Cited by 72 publications

References 7 publications

"Use of Plant Biomass for Removal of Malachite Green From Aqueous Solution and Optimization Using Central Composite Design (Ccd) "

"Use of Plant Biomass for Removal of Malachite Green From Aqueous Solution and Optimization Using Central Composite Design (Ccd) "

Removal of Methylene blue from aqueous solution by bioadsorption onto <i>Ricinus communis </i> epicarp Activated Carbon

Environmentally Benign Adsorption Materials for Removing Arsenic from Aquatic Environment

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