scholarly journals Utilization of Palm-Fruit Bunch Particles for the Adsorption of Dyestuff Wastes

1996 ◽  
Vol 13 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Mamdouh M. Nassar ◽  
Mohamed F. Hamoda ◽  
Gamil H. Radwan
Keyword(s):  
Adsorption Isotherm ◽  
Particle System ◽  
Low Cost ◽  
Particle Sizes ◽  
Palm Fruit ◽  
Basic Dye ◽  
Batch Tests ◽  
Langmuir And Freundlich Models ◽  
Adsorbent Particle ◽  
Palm Bunch

Particles prepared from palm-fruit bunches have been used in batch tests for the adsorption of a basic dye (BR 18) over a range of initial dye concentrations with adsorbent particle sizes varying in the range 106–300 μm. The results revealed the potential of palm-bunch particles as low-cost adsorbents. The uptake of the basic dye was higher at smaller adsorbent particle sizes. The adsorption isotherm followed both the Langmuir and Freundlich models. Values of the separation factor, R, indicate favourable adsorption for the basic dye/palm-fruit bunch particle system, i.e., 0 < R < 1 and n > 1.

Adsorption equilibria of basic dyestuff onto palm-fruit bunch particles

1995 ◽  
Vol 32 (11) ◽  
pp. 27-32 ◽  
Author(s):  
M. M. Nassar ◽  
M. F. Hamoda ◽  
G. H. Radwan
Keyword(s):  
Particle Size ◽  
Adsorption Isotherm ◽  
Low Cost ◽  
Palm Fruit ◽  
Basic Dye ◽  
Batch Tests ◽  
Adsorption Equilibria ◽  
Langmuir And Freundlich Models ◽  
Adsorbent Particle ◽  
Palm Bunch

Particles prepared from palm-fruit bunch have been used for the adsorption of a basic dye (BR 18) over range of initial dye concentrations and varying adsorbent particle size in the range of 106 to 300 m, using batch tests. The results revealed the potential for palm-bunch particles as low cost adsorbents. Uptake of the basic dye was higher at smaller adsorbent particle size. The adsorption isotherm follows both the Langmuir and Freundlich models. Values of the separation factor, R, indicate favourable for the basic dye - palm fruit bunch particles system, that is, 0&lt; R &lt;1 and Freundlich constant n &gt;1.

scholarly journals Desulphurization of Um Al Nar Refinery Straight-Run Kerosene and Gas Oil Using Palm Fruit Kernel Activated Charcoal: A Locally-Made Adsorbent

1997 ◽  
Vol 15 (4) ◽  
pp. 311-321 ◽  
Author(s):  
Gamil M.H. Radwan ◽  
Mamdouh M. Nassar
Keyword(s):  
Experimental Data ◽  
Activated Charcoal ◽  
Low Cost ◽  
Langmuir Model ◽  
Gas Oil ◽  
Sulphur Compounds ◽  
Palm Fruit ◽  
Freundlich Model ◽  
Batch Tests ◽  
Adsorbent Particle

Desulphurization of Um Al Nar Refinery straight-run kerosene and gas oil has been investigated using adsorption techniques. Palm fruit kernel activated charcoal (PFKAC), a locally-made adsorbent, has been used for the adsorption of sulphur compounds in batch tests over a range of initial sulphur concentrations at 25°C and adsorbent particle size ≤ 75 μm. The results revealed the potential of PFKAC as a low-cost adsorbent. PFKAC showed a higher capacity for sulphur at gas oil concentrations than in the case of kerosene. The experimental isothermal data were correlated to the Freundlich model. Values of the Freundlich exponent, n, were > 1 indicating that sulphur compounds are favourably adsorbed on PFKAC. The Langmuir model also fitted the experimental data. A correlation has been developed for fitting the experimental data and has been found to be reasonably good.

The Adsorption Isotherm Studies of Orange Peel on Pesticide Furadan

2013 ◽  
Vol 477-478 ◽  
pp. 1331-1335
Author(s):  
Guang Fu Xu ◽  
Hui Min Jing ◽  
Rui Xin Guo
Keyword(s):  
Aqueous Solution ◽  
Adsorption Isotherm ◽  
Adsorption Capacity ◽  
Low Cost ◽  
Agricultural Waste ◽  
Orange Peel ◽  
Maximum Adsorption Capacity ◽  
Attractive Candidate ◽  
Adsorption Data ◽  
Langmuir And Freundlich Models

Orange peel, an agricultural waste available in large quantity in China, was utilized as low-cost adsorbent to remove furadan from aqueous solution by adsorption. Adsorption isotherms were calculated and discussed. Both Langmuir and Freundlich models fitted the adsorption data quite reasonably (R2> 0.98) and the maximum adsorption capacity was 161.29 mg.g-1. The results in this study indicated that orange peel was an attractive candidate for removing furadan from the aqueous solution.

Gasoline Desulphurization by Reactive Adsorption on ZnO /Bentonite

2019 ◽  
Vol 70 (1) ◽  
pp. 50-53
Author(s):  
Constantin Sorin Ion ◽  
Mihaela Bombos ◽  
Gabriel Vasilievici ◽  
Vasile Matei
Keyword(s):  
Zinc Oxide ◽  
Adsorption Isotherm ◽  
Operating Temperature ◽  
Continuous System ◽  
Particle Sizes ◽  
Textural Characteristics ◽  
Reactive Adsorption ◽  
Atmospheric Distillation ◽  
Increased Pressure

Desulfurization of atmospheric distillation (DA) gasoline was performed by reactive adsorption on ZnO/ bentonite. The adsorbent was characterized by determining the distribution of particle sizes of zinc oxide powdered, adsorption isotherm and textural characteristics of granulated adsorbent. Adsorption experiments of atmospheric distillation gasoline were performed in continuous system at 280-320oC, 5-25 bar and volume hourly space velocities of 1-1.5 h-1. The adsorption on ZnO/ bentonite has been favored by increased pressure and operating temperature.

scholarly journals Engineering of Calcium Alginate- PANI@Sawdust Wood hydrogel Bio-beads for the Removal of the Sulfonate Groups-Containing Orange G dye from Aqueous Solution

2021 ◽  
Author(s):  
ABDELAZIZ IMGHARN ◽  
Nouh Aarab ◽  
Abdelghani Hsini ◽  
Yassine Naciri ◽  
Mohammed Elhoudi ◽  
...  
Keyword(s):  
Calcium Alginate ◽  
Fourier Transforms ◽  
Low Cost ◽  
Aqueous Media ◽  
Freundlich Isotherm ◽  
Batch Tests ◽  
Orange G ◽  
Ft Ir ◽  
Interfering Ions ◽  
Ft Ir Spectroscopy

Abstract The aim of this work is to investigate the adsorption performance of orange G (OG) dye from aqueous solutions employing PANI@sawdust biocomposite enrobed by calcium-alginate biobeads (Alg-PANI@SD). The as-prepared adsorbent was characterized by scanning-electron-microscopy (SEM), X-ray energy dispersive spectroscopy (EDS) and Fourier transforms infrared (FT-IR) spectroscopy, and used to remove Orange G dye from water. batch tests were performed as a function of adsorbent dosage, pH, contact time, interfering ions and initial OG dye concentration. Experimental results show that the kinetic model of pseudo-first-order (PFO) and Freundlich isotherm provided a good fitting of the whole experimental data. The results revealed that the as-prepared tricomposite Alg-PANI@SD, has the potential to be applied as a low-cost adsorbent for the adsorption of OG dye from aqueous media.

Performance Evaluation of Palm Waste Screw Press Briquette Moulding Machine

2009 ◽  
Vol 62-64 ◽  
pp. 723-727
Author(s):  
C.O. Ilechie ◽  
G.F. Aibangbee ◽  
S.R. Ogblechi ◽  
P.E. Amiolemhen
Keyword(s):  
Performance Evaluation ◽  
Low Cost ◽  
Low Carbon Steel ◽  
Medium Size ◽  
Screw Thread ◽  
Low Carbon ◽  
Alternative Source ◽  
Palm Fruit ◽  
Moulding Machine ◽  
Palm Waste

An alternative source of heat energy to firewood called, palm waste briquette, has been developed from oil palm fruit process wastes. These wastes (sludge, shell, fibre) are compounded in a volumetric ratio of 1:2:3 and moulded into briquettes. The performance evaluation of a low cost women friendly palm waste briquette moulding machine was carried out. The evaluation showed that the machine designed and fabricated using readily available low carbon steel (mild steel) and employing the vertical screw thread mechanism in its operation, produces three different sizes of briquette (industrial sizes, medium sizes and domestic sizes). It requires only two unskilled operators and has a daily throughput of about 1,300kg briquettes (i.e. 400 pieces-industrial size or 800 pieces-medium size or 1,600 pieces-domestic size) unlike a modified brick moulding machine which has a daily throughput of 120 pieces industrial size

scholarly journals Biophysical Characterization of (Silica-coated) Cobalt Ferrite Nanoparticles for Hyperthermia Treatment

Nanomaterials ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1713 ◽  
Author(s):  
Niklas Lucht ◽  
Ralf P. Friedrich ◽  
Sebastian Draack ◽  
Christoph Alexiou ◽  
Thilo Viereck ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Particle System ◽  
Medical Condition ◽  
Low Cost ◽  
Heat Stroke ◽  
Magnetic Hyperthermia ◽  
Modern Medicine ◽  
The Body ◽  
Jurkat Cells ◽  
Hyperthermia Treatment

Magnetic hyperthermia is a technique that describes the heating of material through an external magnetic field. Classic hyperthermia is a medical condition where the human body overheats, being usually triggered by a heat stroke, which can lead to severe damage to organs and tissue due to the denaturation of cells. In modern medicine, hyperthermia can be deliberately induced to specified parts of the body to destroy malignant cells. Magnetic hyperthermia describes the way that this overheating is induced and it has the inherent advantage of being a minimal invasive method when compared to traditional surgery methods. This work presents a particle system that offers huge potential for hyperthermia treatments, given its good loss value, i.e., the particles dissipate a lot of heat to their surroundings when treated with an ac magnetic field. The measurements were performed in a low-cost custom hyperthermia setup. Additional toxicity assessments on Jurkat cells show a very low short-term toxicity on the particles and a moderate low toxicity after two days due to the prevalent health concerns towards nanoparticles in organisms.

scholarly journals Studies on Removal of Cr (VI) from Aqueous Solutions Using Powder of Mosambi Fruit Peelings (PMFP) As a Low Cost Sorbent

2012 ◽  
Vol 9 (3) ◽  
pp. 1389-1399 ◽  
Author(s):  
R. Hema Krishna ◽  
A. V. V. S. Swamy
Keyword(s):  
Particle Size ◽  
Aqueous Solutions ◽  
Metal Ion ◽  
Low Cost ◽  
Ion Concentration ◽  
Isotherm Models ◽  
Batch Tests ◽  
Freundlich Adsorption Isotherm ◽  
Equilibrium Data ◽  
Agitation Time

The powder of mosambi fruit peelings (PMFP) was used as an adsorbent for the removal of heavy metal like Cr (VI) from aqueous solutions was studied using batch tests. The influence of physico-chemical key parameters such as the initial metal ion concentration, pH, agitation time, adsorbent dosage, and the particle size of adsorbent has been considered in batch tests. Sorbent ability to adsorb Cr (VI) ions was examined and the mechanism involved in the process investigated. The optimum results were determined at an initial metal ion concentration was 10 mg/lit, pH=2, agitation time – 60 min, an adsorbent dose (150 mg/50 ml) and the particle size (0.6 mm). The % adsorption, Langmuir constants [Q0=7.51(mg/g) and b=1.69(mg/lit)] Freundlich constant(Kf=2.94), Lagergren rate constants (Kad(min-1)=5.75 x 10-2) for [Cr(VI)] 10 mg/lit were determined for the adsorption system as a function of sorbate concentration. The equilibrium data obtained were tested using Langmuir, Freundlich adsorption isotherm models, and the kinetic data obtained were fitted to pseudo first order model.

scholarly journals Measurement of volume of macaw palm fruit using traditional and the digital Moiré techniques

2016 ◽  
Vol 20 (2) ◽  
pp. 152-157 ◽  
Author(s):  
Anderson G. Costa ◽  
Elisângela Ribeiro ◽  
Roberto A. Braga ◽  
Francisco A. C. Pinto
Keyword(s):  
Low Cost ◽  
Maturation Stage ◽  
Maturity Stage ◽  
Displacement Method ◽  
Water Displacement ◽  
Palm Fruit ◽  
Macaw Palm ◽  
Moiré Techniques ◽  
Palm Fruits ◽  
Digital Moiré

ABSTRACT The macaw palm crop has been studied because of its bioenergy potential due to the high oil yield, which is linked to fruit maturity stage. Digital images have been adopted as a contactless way to obtain information about fruit surface area and volume, acting as a sensor for quality control and the classification of fruits, based on physical aspects during the maturation stage. The aim of this study was to estimate the volume of macaw palm fruits from digital models obtained by the Moiré technique using only one camera, associated with digital image-processing tools to unwarp the images, allowing the comparison with conventional methods. The volumes obtained by the Moiré technique were compared with those obtained by water displacement method (WDM) and millet-seed displacement method (SDM). The results show that the volumes measured by the Moiré technique exhibited a mean error of 13.54% compared with the SDM, and 11.09% when compared to WDM, which indicates that the digital Moiré technique is a robust, low-cost tool to measure the volume of macaw palm fruits.

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