Removal of Cu(II) Ions by <i>Leucaena Leucocephala</i> (Subabul) Seed Pods from Aqueous Solutions

Patil, A. K.; Shrivastava, V. S.

doi:10.1155/2010/314961

Cited by 11 publications

(5 citation statements)

References 8 publications

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“…Although a few successful experiments have been conducted using adsorbents derived from L. leucocephala seed pods to remove heavy metals from an aqueous environment (Patil & Shrivastava, 2010), a sufficient amount of experimental data has not been really provided. In addition, there has been no comparative study on the adsorption behaviour of L. leucocephala based activated carbon and commercially available activated carbon (CAC).…”

Section: Introductionmentioning

confidence: 99%

Adsorption of hexavalent chromium from aqueous solution byLeucaena leucocephalaseed pod activated carbon: equilibrium, kinetic and thermodynamic studies

Yusuff

2019

Arab Journal of Basic and Applied Sciences

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This study is initiated to launch an activated carbon derived from Leucaena leucocephala seed pod as an adsorbent for the removal of hexavalent chromium from aqueous solution. The prepared activated carbon was characterized by proximate analysis, Brunauer-Emmett-Teller (BET) surface area measurement, scanning electron microscopic-energy dispersive Xray (SEM-EDX) spectroscopy and Fourier transform infrared (FTIR) spectroscopy. The effects of various variables, initial Cr(VI) concentration, contact time, adsorbent dosage, temperature and pH, which influence the adsorption process, were investigated. Equilibrium adsorption isotherms, kinetic and thermodynamic behaviour of the process were studied. The pH at point of zero charge (pH pzc) of 5.20 suggested that surface of the activated carbon was positively charged for pH below the pH pzc , attracting anions. The obtained results showed that 100 min contact time, 1.0 g adsorbent dose, 45 C temperature and solution pH of 6.0 resulted in maximum Cr(VI) uptake. The experimental data better fitted to the Langmuir isotherm with monolayer adsorption capacity of 26.94 mg/g. The kinetic analysis revealed that pseudo-second-order model fitted well to the acquired experimental data. The thermodynamic behaviour of Cr(VI) adsorption onto activated carbon was found to be spontaneous and endothermic in nature.

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Section: Introductionmentioning

confidence: 99%

Adsorption of hexavalent chromium from aqueous solution byLeucaena leucocephalaseed pod activated carbon: equilibrium, kinetic and thermodynamic studies

Yusuff

2019

Arab Journal of Basic and Applied Sciences

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“…Then, the small slices of L.leucocephala pods are dried in a universal oven model CSC91000 at 40 o C for 7 hours to remove moisture content up to 90% [8]. The dried pods were ground using laboratory blender to obtain the powder sample and then were sieved using Endecotts Octagon 2000 Digital Sieve Shaker to get desire particle size of 125 µm [9]. Lastly, the sample powder of L.leucocephala pods were stored at 2 to 4 o C until further use [10].…”

Section: A Materialsmentioning

confidence: 99%

“…Initially, the weight of the empty glass dish and the glass dish with 1.41 g of pods were measured before undergo the drying process. The pods was placed in the oven at the temperature of 40 o C for 7 hours [9]. The weight of the pods sample was measured until the constant of moisture content was achieved.…”

Section: B Moisture Content Determinationmentioning

confidence: 99%

Rapid Expansion Supercritical Solution (RESS) of Carbon Dioxide as a Green Technology Method for Leucaena Leucocephala Solid Oil Particle Formation

Zainuddin*,

Sulong,

Mohamad

2019

IJRTE

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Rapid expansion supercritical solution (RESS) is a technology introduced that produces a small solid oil particle with organic solvent free particle. RESS method is a better method compared to the traditional method due to many advantages such are produce clean extraction yields, obtain free solvent traces, environmental friendly and short processing time can be used in various industries such as cosmetic and pharmaceutical. Therefore, RESS technique is applied in order to produce direct solid oil particle from Luecaena leucocephala (L.leucocephala) pods instead of oil. In this study, the operating condition that applied during the RESS process in order to obtain the highest solid oil particle from the L.leucocephala pods sample are extraction temperature of 40 ºC, 45 ºC, 50 ºC, 55 ºC and 60 ºC and extraction pressure of 3000 psi, 4000 psi, 5000 psi, 6000 psi and 7000 psi at the constant extraction time of 40 minutes. The highest yield of L.leucocephala solid oil particles that obtained is about 0.65% at 60 oC and 7000 psi. The major components that obtained from the highest yield are 2,2,3-trimethyldecane, Cyclopentanone, propanoic acid and Cyclobutane, 1,2-diphenyl- by as identified by using Gas Chromatography Mass Spectrometry (GCMS).

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“…Therefore, it has potential to be a cheap and readily available material for a biosorbent. A previous study has shown that modi ed LLP is a capable sorbent for the sorption of Cu(II) ions from aqueous solution 29 . The maximum removal percentage of Cu(II) by using modi ed LLP was obtained at pH 4.94, sorbent dosage of 1.99 g/L, agitation speed of 119.59 rpm, and contact time of 59.55 min.…”

Section: Introductionmentioning

confidence: 99%

Characterized raw Leucaena leucocephala pod (LLP) as biosorbent produced high adsorption of Pb(II) ions in a synthetic aqueous solution

Razak

Idris

Musa

et al. 2022

Preprint

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Biosorbent from a plant-based material with characterized properties is important to remove heavy metals hence reduce the impact on humans and aquatic life. This study proposes to remove Pb(II) in a synthetic aqueous solution using characterized plant-based raw Leucaena leucocephala pod (LLP) via adsorption experiment. The effects of pH synthetic aqueous solution and raw LLP dosage on Pb(II) adsorption were investigated. The characteristics of raw LLP before and after adsorption of Pb (II) were also studied. It was found that the highest adsorption capacity of Pb(II) was obtained at pH 5 of synthetic solution with 1.1 mg/g adsorption capacity. Meanwhile, the optimum dosage of raw LLP was 40 g/L at 30 min retention time, resulting in 93% of Pb(II) removal. Optimum removal of Pb(II) using raw LLP in this study was obtained under low retention time of adsorption process compared to other studies using others plant based biosorbent but comparable in terms of heavy metal removal. Raw LLP can be effectively used directly without modification as a biosorbent in removing Pb(II) in industrial waste, hence provides an alternative method for pollutants removal which is safe for the environment and abundantly available.

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Removal of Cu(II) Ions by Leucaena Leucocephala (Subabul) Seed Pods from Aqueous Solutions

Cited by 11 publications

References 8 publications

Adsorption of hexavalent chromium from aqueous solution byLeucaena leucocephalaseed pod activated carbon: equilibrium, kinetic and thermodynamic studies

Adsorption of hexavalent chromium from aqueous solution byLeucaena leucocephalaseed pod activated carbon: equilibrium, kinetic and thermodynamic studies

Rapid Expansion Supercritical Solution (RESS) of Carbon Dioxide as a Green Technology Method for Leucaena Leucocephala Solid Oil Particle Formation

Characterized raw Leucaena leucocephala pod (LLP) as biosorbent produced high adsorption of Pb(II) ions in a synthetic aqueous solution

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