STUDY ON REMOVAL OF CADMIUM FROM AQUEOUS SOLUTIONS BY ADSORPTION ON BAEL TREE LEAF POWDER

2010 ◽  
Vol 9 (3) ◽  
pp. 429-434 ◽  
Author(s):  
Ponnusamy Senthilkumar ◽  
Rangasamy Gayathri
Keyword(s):  
Aqueous Solutions ◽  
Leaf Powder ◽  
Tree Leaf

Lead adsorption from aqueous solutions by a granular adsorbent prepared from phoenix tree leaves

RSC Advances ◽  
2016 ◽  
Vol 6 (30) ◽  
pp. 25393-25400 ◽  
Author(s):  
Sha Liang ◽  
Nan Ye ◽  
Yuchen Hu ◽  
Yafei Shi ◽  
Wei Zhang ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Adsorption Kinetics ◽  
Tree Leaves ◽  
Lead Adsorption ◽  
Leaf Powder ◽  
Tree Leaf ◽  
Kinetics And Isotherms ◽  
Granular Adsorbent

In this study, a granular adsorbent was prepared from phoenix tree leaf powder with bentonite as the binder. The adsorption kinetics and isotherms of Pb2+ removal by the 500 °C-calcined granular adsorbent were studied by various models.

Kinetic, isotherm and thermodynamic aspects of Cu2+ biosorption onto Rosa damascena leaf as a low-cost biosorbent: Optimization of process variables by Response Surface Methodology

2021 ◽  
Author(s):  
Mustafa A. Fawzy ◽  
Hatim M. Al-Yasi ◽  
Tarek M. Galal ◽  
Reham Z. Hamza ◽  
Esmat F. Ali ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Aqueous Solutions ◽  
Response Surface ◽  
Structural Characteristics ◽  
Low Cost ◽  
High Surface ◽  
Isotherm Models ◽  
Rosa Damascena ◽  
Before And After ◽  
Leaf Powder

Abstract In this study, the Rosa damascena leaf powder was evaluated as a biosorbent for copper removal from aqueous solutions. Optimized conditions of 4.0 g/L biosorbent dosage, pH of 5.5 and initial copper concentration of 55 mg/L obtained by Response Surface Methodology were employed for Cu2+ biosorption by R. damascena leaves and up to 88.7 % Cu2+ was removed. The biosorption data were well fitted to the pseudo-second order and Elovich kinetic models. The Langmuir and Dubinin-Radushkevich isotherm models were also best fit the experimental data showing monolayer isotherm with qmax value of 25.13 mg/g obtained at optimum conditions. Thermodynamic parameters showed the spontaneity, feasibility and exothermic nature of adsorption. Scanning electron microscopy, Energy-Dispersive X-Ray, and Fourier transform infrared spectroscopy were used to characterize the biosorbent before and after Cu2+ biosorption, revealing outstanding structural characteristics and high surface functional groups availability. In addition, immobilized R. damascena leaves adsorbed 90.7 % of copper from aqueous solution, which is greater than free biosorbent (85.3 %). It can be concluded that R. damascena might be employed as a low-cost biosorbent for removing heavy metals from aqueous solutions.

scholarly journals Feasibility Of Metal Biosorption using Gulmohar (Delonix Regia) Tree Leaves Power: Effect of Biosorption Structure on Adsorption Isotherms and Kinetics

2019 ◽  
Vol 8 (4) ◽  
pp. 1527-1531
Keyword(s):  
Tree Leaves ◽  
Sorption Equilibrium ◽  
Efficient Removal ◽  
Biosorption Process ◽  
Metal Biosorption ◽  
Adsorption Isotherms And Kinetics ◽  
Leaf Powder ◽  
Power Effect ◽  
Experimental Values ◽  
Tree Leaf

In this work, biosorption process was commited for expulsion of metals using Gulmohar tree leaf powder since Gulmohar tree leaf powder (GTLP) is a efficient biosorbent for treating Cr(VI) ions. The optimum values observed for efficient removal of Cr(VI) ions were pH-2, concentration for Cr(VI) biosorption by GTLP- 20 ppm and biosorbent dosage-0.1 g. The symmetry was attained at 75 min of acquaintance time. Experimental values were depicted with Freundlich and Langmuir models. Sorption equilibrium exhibited good robust to Langmuir model (R2 = 0.991).

Adsorption of methylene blue by phoenix tree leaf powder in a fixed-bed column: experiments and prediction of breakthrough curves

Desalination ◽  
2009 ◽  
Vol 245 (1-3) ◽  
pp. 284-297 ◽  
Author(s):  
Runping Han ◽  
Yu Wang ◽  
Xin Zhao ◽  
Yuanfeng Wang ◽  
Fuling Xie ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Fixed Bed ◽  
Breakthrough Curves ◽  
Column Experiments ◽  
Fixed Bed Column ◽  
Leaf Powder ◽  
Tree Leaf

Biosorption of lanthanum and cerium from aqueous solutions by Platanus orientalis leaf powder

2008 ◽  
Vol 90 (1) ◽  
pp. 13-18 ◽  
Author(s):  
Şenol Sert ◽  
Ceren Kütahyali ◽  
Süleyman İnan ◽  
Zeynep Talip ◽  
Berkan Çetinkaya ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Platanus Orientalis ◽  
Leaf Powder

scholarly journals Studies on the removal of copper ions from industrial effluent by Azadirachta indica powder

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Suhair Saif Al Moharbi ◽  
M. Geetha Devi ◽  
B. M. Sangeetha ◽  
Shah Jahan
Keyword(s):  
Aqueous Solutions ◽  
Azadirachta Indica ◽  
Copper Ions ◽  
Experimental Studies ◽  
Industrial Effluent ◽  
Experimental Result ◽  
Pollution Level ◽  
Solution Ph ◽  
Stirring Time ◽  
Leaf Powder

AbstractRapid industrialization, urbanization and population growth have resulted in air, water and land pollution. Water pollution is a major concern across the globe. Discharge of huge amount of industrial wastewater adversely affects the human and environment. Heavy metal pollution is considered to be one of the serious environmental problems today. Due to strict environmental regulations in the country, it is required to bring down the pollution level to a permissible limit. The present study assessed the capability of Azadirachta indica (neem leaf) powder as a natural adsorbent in the removal of copper ions from aqueous solutions. The characterization of the adsorbent was performed using X-ray diffraction, scanning electron microscopy and Fourier-transform infrared spectroscopy. Series of batch experimental studies were carried out by changing the solution pH, stirring time, adsorbent dosage and stirring speed in the removal of copper from aqueous solution using A. indica as biosorbent. The experimental result shows that the percentage removal of copper was highest at the following optimized conditions: pH 7.0, stirring time 60 min and biosorbent dosage of 1.0 g and at 125 RPM speed. The studies indicate that A. indica is considered to be a promising type of biomass for the removal of copper ions from aqueous solutions.

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