Metal Ion Adsorption by Soybean Hulls Modified with Citric Acid: A Comparative Study

Marshall, Wayne E.; Wartelle, Lynda H.; Boler, D.E; Toles, Christopher A.

doi:10.1080/09593332108618075

Cited by 53 publications

(34 citation statements)

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“…Agricultural by-products have also offered a potential alternative as biosorbents for heavy metals among the existing techniques and are yet a subject of broad studies. Agricultural biosorbents including soybean hulls, peanut hulls, almond hulls, cottonseed hulls, and corncobs have also been proven to take out heavy metal ions Marshall et al 2000 ). Lignocellulosic materials (e.g., agricultural by-products) are currently used in many different technological applications (Álvarez et al 2007 ).…”

Section: Plant-based Metal Adsorbentsmentioning

confidence: 99%

Phytoremediation Using Algae and Macrophytes: I

2015

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Section: Plant-based Metal Adsorbentsmentioning

confidence: 99%

Phytoremediation Using Algae and Macrophytes: I

2015

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“…at mildly elevated temperatures enhance their sorption capacity for metal ions and basic dyes (Lehrfeld 1997;Wafwoyo et al 1999;Marshall et al 1999Marshall et al , 2000Vaughan et al 2001;Wong et al 2003;Altundogan et al 2007;Gong et al 2006Gong et al , 2007Gong et al , 2008. It has been reported that an estimated production cost for citric acid-modified soybean hull is $1.17/kg versus typical retail costs $4-40/kg for commercial, petroleum-based cation exchange resins when purchased in bulk quantities .…”

Section: Introductionmentioning

confidence: 99%

A study on cations and color removal from thin sugar juice by modified sugar beet pulp

Arslanoğlu

Tümen

2011

J Food Sci Technol

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This article describes the use of citric acid modified sugar beet pulp as new ion-exchanger sorbent for the removal of metal cations and colorants from thin juice. The results of batch adsorption runs concerning the effects of contact time, material dosage, temperature and pH drop were presented and discussed. Experimental data on the removal of metal cations showed that the sorption process was rapid and reached equilibrium in 60 min. Modified material in acidic form caused to a significant pH drop in thin juice, which could result with sucrose inversion. Uptake of metal cations increased with temperature whereas that of color decreased. Neutralised type modified product gave more satisfying results. After six successive contacts, 49.7%, 37.5% and 43.7% removals for Ca-Mg, K and color, respectively, were obtained by using neutralised form of modified sugar beet pulp.

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“…As research conducted by Chakravarty et al [4] used the newspaper that has been modified as adsorbent, capable of reducing the metal content of Zn 9.20 mg / g with initial concentration of Zinc 10.31 mg / lt. Then Chakravarty et al [2] conducted a study with an adsorbent newspaper to absorb Cu (II), obtained a maximum loading capacity of 30 mg / g with initial concentration of Cu (II) 20 mg / l. Dehghani et al [5] using old newspapers that have been modified to absorb chromium of 59.88 mg / g (64%) with a dose of adsorbent 3 g / l and a contact time of 60 minutes. Marshall [6] enhanced the adsorption capacity of soybean hulls for copper uptake by employing base treatment before modification with citric acid (CA). Pitsari et.…”

Section: Introductionmentioning

confidence: 99%

Reuse of Newspaper As An Adsorbent For Cu (II) Removal By Citric Acid Modification

2018

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Abstract. High Consumption of paper, bring the impact of the waste paper itself. And the utilization of the paper is limited to recycled products and crafts, whereas paper such as newspaper still contains cellulose that can be potential to be used as a heavy metal adsorbent. In this study, newspaper was dissolved in sodium bicarbonate to reduce various impurities and then was reacted with citric acid (CA). The modified adsorbent was characterized by FTIR and was tested for adsorb Cu(II) in artificial solution. After adsorption process, the solution was filtered and analysed using Atomic Absorption Spectrophotometer (AAS). The adsorption experimental data was fitted to Langmuir, Freundlich, Tempkin, and Dubinin-Radushkevich for equilibrium model and was fitted to pseudo first order reaction and pseudo second order reaction for kinetic studies. The result showed that CA-modification newspaper able to remove heavy metals Cu(II) in solution.

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Metal Ion Adsorption by Soybean Hulls Modified with Citric Acid: A Comparative Study

Cited by 53 publications

References 0 publications

Phytoremediation Using Algae and Macrophytes: I

Phytoremediation Using Algae and Macrophytes: I

A study on cations and color removal from thin sugar juice by modified sugar beet pulp

Reuse of Newspaper As An Adsorbent For Cu (II) Removal By Citric Acid Modification

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