scholarly journals Karakterisasi dan Efektifitas Cangkang Bekicot (Achatina fulica) Sebagai Biosorben dalam Menyerap Logam Berat Fe pada Air Limbah Sintetik

2021 ◽  
Vol 6 (4) ◽  
Author(s):  
Deasy Amanda Valentine ◽  
Azhar Azhar ◽  
Mitha Putri Paradila
Keyword(s):  
Wave Number ◽  
Achatina Fulica ◽  
Snail Shell ◽  
Metal Retention ◽  
Shell Powder

The metal remittance in this review is Fe metal, since Fe is one of the metals that is generally contained in water. Whenever devoured water containing Fe that surpasses the limit, it will be awful for wellbeing. The purpose for this research was to portray the biosorbent of snail shell powder and to test the presentation of the biosorbent in the retention of substantial metal iron (Fe). From the aftereffects of the FTIR test, it is assessed that there has been an adjustment of chitin to chitosan. The chitosan spectra acquired showed the presence of a retention band at a wave number of 3066 cm-1 because of the extending vibration of the - Goodness bunch. while for the portrayal utilizing SEM, the molecule size of the biosorbent has different sizes, to be specific with a size scope of 2.16 - 3.44 m to 2.54 - 12.12µm. The development of a coral-like surface is the most definitive factor in the partition of the weighty metal retention interaction of Fe. The computation of the viability esteem showed that the adequacy of snail shell powder in engrossing 10 ppm Fe metal was at a mass of 20 g with a mixing season of 30 minutes, which was 99.2%.

scholarly journals Analysis of tensile strength, microstructure, and fractograph of Al-Si with snail shell powder as reinforce agent

2021 ◽  
Vol 1034 (1) ◽  
pp. 012131
Author(s):  
Poppy Puspitasari ◽  
Galy Dwi Susilo ◽  
Aminnudin ◽  
Yanuar Rohmat Aji Pradana ◽  
Andika Bagus Nur Rahma Putra ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Snail Shell ◽  
Shell Powder

Characterization of Chitosan Obtained from Snail Shell (Achatina fulica) and its Excipient Potentials in Metronidazole Tablet Formulation

2021 ◽  
Vol 20 (1) ◽  
pp. 31-39
Author(s):  
Oluyemisi Adebowale Bamiro ◽  
Aishat Oyinkansola Salisu ◽  
Ese Mary Iyere ◽  
Olatundun Atoyegbe ◽  
Olutayo Ademola Adeleye ◽  
...  
Keyword(s):  
Tablet Formulation ◽  
Achatina Fulica ◽  
Flow Properties ◽  
Crushing Strength ◽  
Snail Shell ◽  
Significant Difference ◽  
Swelling Capacity ◽  
Tablet Formulations ◽  
Scanning Electron

The aim of the work was to characterize chitosan extracted from snail shell and evaluate its use as a disintegrant and binder in metronidazole tablet formulation in comparison with standard chitosan (SC). The mechanical properties were assessed using crushing strength and friability, while the release properties were assessed using disintegration and dissolution times. The extracted chitosan (EC) was crystalline in nature and the scanning electron microscopy (SEM) showed polygonal particles with rough surface. The moisture and swelling capacity was 1.80% and 15.00%, respectively. The densities and flow properties were significantly (p<0.05) higher than those of the SC. As a binder, the crushing strength of formulations containing EC was higher than SC, but both formulation failed friability test. There was significant difference between the disintegration times of the metronidazole formulations containing EC and SC as a disintegrant. The result showed that EC is more effective as a binder in tablet formulations. Dhaka Univ. J. Pharm. Sci. 20(1): 31-39, 2021 (June)

scholarly journals PEMANFAATAN KITOSAN DARI LIMBAH CANGKANG BEKICOT (Achatina fulica) SEBAGAI ADSORBEN LOGAM BERAT SENG (Zn)

Konversi ◽  
2018 ◽  
Vol 5 (1) ◽  
pp. 22
Author(s):  
Stevano Victor M. ◽  
Bayu Andhika ◽  
Isna Syauqiah
Keyword(s):  
Heavy Metals ◽  
Atomic Absorption ◽  
Water Samples ◽  
Size Variation ◽  
Second Phase ◽  
Achatina Fulica ◽  
Snail Shell ◽  
Production Stage ◽  
Two Phases ◽  
Chitosan Powder

Abstrak- Telah dilakukan pemanfaatan cangkang bekicot (Achatina fulica) sebagai adsorben logam berat seng (Zn). Penelitian ini bertujuan untuk mengetahui jumlah kitosan yang didapat dari cangkang bekicot, dan mengetahui kemampuan adsorben kitosan dalam uji adsorpsi yang menggunakan sampel air yang tercemar seng (Zn). Pembuatan kitosan dari cangkang bekicot dilakukan dengan dua tahap yaitu tahap pembuatan kitosan dengan variasi ukuran kitosan 250 micron  dan 355 micron. Tahap pembuatan kitosan terdiri dari pembuatan serbuk cangkang bekicot, deproteinasi, demineralisasi, depigmentasi dan deasetilasi. Tahap  ke dua yaitu uji penyerapan kitosan terhadap logam berat seng (Zn) dengan variasi jumlah massa kitosan yang digunakan yaitu: 1 gram, 3 gram, 6 gram dan 9 gram. Sampel tersebut diuji dengan menggunakan Atomic Absorption Spectrophotometric  (AAS) untuk mengetahui konsentrasi logam berat seng (Zn) yang terkandung di dalamnya. Hasil penelitian menunjukan bahwa kitosan yang didapat dari cangkang bekicot untuk ukuran 250 micron yang sebesar 95,27%, dan untuk ukuran 355 micron yaitu sebesar 96,18%. Daya serap optimum kitosan didapat pada kitosan berukuran 250 micron  dengan massa kitosan 9 gram. Kata kunci: Adsorbsi, mikron, cangkang bekicot dan logam berat seng (Zn) Abstract- The used of snail shell (Achatina fulica) as adsorbent of heavy metals zinc (Zn). This study aims to determine the amount of chitosan derived from snail shells, and knowing the ability of chitosan adsorbent in adsorption tests using water samples were contaminated zinc (Zn). Preparation of chitosan from the shells of snails be done in two phases: the manufacture of chitosan with chitosan size variation of 250 micron and 355 micron. Production stage consists of the manufacture of chitosan powder snail shells, deproteinization, demineralization, depigmentasi and deacetylation. The second phase of the test chitosan absorption of heavy metals zinc (Zn) with a variation of the mass amount of chitosan that is used as follows: 1 gram, 3 grams, 6 grams and 9 grams. The sample is tested by using Atomic Absorption Spectrophotometric (AAS) to determine the concentration of heavy metals zinc (Zn) contained in it. The result showed that chitosan is obtained from the snail shell to the size of 250 microns, which equal to 95.27%, and for the size of 355 microns that is equal to 96.18%. Optimum absorption of chitosan obtained at chitosan measure 250 microns with a mass of 9 grams of chitosan.                                                                                                                                        Keywords: Adsorption, micron, snail shells and heavy metals zinc (Zn).

scholarly journals Studies on the Transport of Aromatic Solvents through Filled Natural Rubber

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Isaac O. Igwe ◽  
Obumneme E. Ezeani
Keyword(s):  
Particle Size ◽  
Weight Gain ◽  
Natural Rubber ◽  
Activation Energies ◽  
Free Energies ◽  
Snail Shell ◽  
Aromatic Solvents ◽  
Benzene Toluene ◽  
Powder Content ◽  
Shell Powder

The transport of three aromatic solvents (benzene, toluene and xylene) through snail shell powder filled natural rubber was studied at 313, 333, and 353 K by conventional weight-gain experiments. The effects of snail shell powder content, particle size, nature of solvent, and temperature on the transport characteristics of natural rubber were determined. The estimated Arrhenius activation energies for the processes of sorption, diffusion, and permeation showed that the activation energies were highest in xylene at all the filler contents investigated. The calculated enthalpies, and entropies of sorption were all positive for the solvents investigated. Similarly, the change in the estimated free energies of sorption were all positive; an indication of the non-spontaneity of the solubility of snail shell powder filled natural rubber in the aromatic solvents at 313 k.

scholarly journals Experimental Investigation of Snail Shell-Based Cement Mortar: Mechanical Strength, Durability and Microstructure

2021 ◽  
Author(s):  
Suseela Alla ◽  
SS. Asadi
Keyword(s):  
Cement Mortar ◽  
Microstructural Analysis ◽  
Strength Test ◽  
X Ray Diffraction ◽  
Chloride Permeability ◽  
Snail Shell ◽  
X Ray ◽  
Compressive Strength Test ◽  
Living Organisms ◽  
Shell Powder

Abstract Snail shells are the discarded bio-shell waste from restaurants, and oceans creating huge environmental problems for society. Living organisms are harmed when these shells are released. As previously stated, the work focuses primarily on the utilisation of snail shell powder as a raw ingredient in cement mortar. The mechanical and durability features of snail shell-based cement mortar were compared to the nominal mortar in this study. Snail shell powder, ranging from 0% to 35%, was used to partially substitute cement in mortar, with a variation of 5%. XRD (X-Ray Diffraction) was used to determine the chemical composition of both mixes. The mechanical properties of mortar for both mixes were determined using a compressive strength test. The tests on cement mortar viz., Water Absorption, Sorptivity, Acid Durability, and Rapid Chloride Permeability Test (RCP Test) were compared with nominal mortar mix. According to the results of the investigation, the optimum use of snail shell powder is 30%. The durability of both mixes increased by the increase of the snail shell powder. To detect the C-S-H gel formations, microstructural analysis was performed for both mixes.

scholarly journals SYNTHESIS AND CHARACTERIZATION OF CALCIUM SILICATE FROM RICE HUSK ASH AND SNAIL SHELL

2019 ◽  
Vol 11 (2) ◽  
pp. 45
Author(s):  
Sadang Husain ◽  
Ninis Hadi Haryanti ◽  
Suryajaya Suryajaya ◽  
Antung Permitaria
Keyword(s):  
Rice Husk ◽  
Calcium Silicate ◽  
Rice Husk Ash ◽  
Wave Number ◽  
X Ray Diffraction ◽  
Solid Reaction ◽  
Snail Shell ◽  
X Ray ◽  
Infra Red

<p class="abstrak">Calcium silicate ceramics have been made using natural ingredients such as rice husk and snail shell with solid reaction techniques. The aim of this study to determine the characteristics of calcium silicate that have been sintered at a temperature of 900 <sup>°</sup>C, 1000 <sup>°</sup>C, and 1100 <sup>°</sup>C. Samples were characterized by X-Ray Diffraction (XRD), optical microscopy, and Fourier Transform Infra-Red (FTIR). The results of XRD characterization showed that CaSiO<sub>3</sub> (calcium silicate) along with the increase in calcination temperature and quantity was increased due to the increase of temperature of calcination. FTIR analysis showed that the Ca-Si-O bond was formed at wave number ranging from 848 cm<sup>-1</sup> and 999 – 1001 cm<sup>-1</sup>.</p>

scholarly journals Silicosis Caused by Chronic Inhalation of Snail Shell Powder

2012 ◽  
Vol 27 (1) ◽  
pp. 93
Author(s):  
Jae Woo Jung ◽  
Byung Ook Lee ◽  
Jae Hee Lee ◽  
Sung Woon Park ◽  
Bo Min Kim ◽  
...  
Keyword(s):  
Snail Shell ◽  
Shell Powder

scholarly journals PENGGUNAAN BERBAGAI TEKANAN DAN WAKTU HIDROLISIS PADA PRODUKSI GLUKOSAMIN HIDROKLORIDA DARI KITOSAN CANGKANG BEKICOT (Achatina fulica)

KOVALEN ◽  
2016 ◽  
Vol 2 (1) ◽  
Author(s):  
Noviana Linawati Dewi ◽  
Syaiful Bahri ◽  
Jaya Hardi
Keyword(s):  
Factorial Design ◽  
Time Pressure ◽  
Distilled Water ◽  
Achatina Fulica ◽  
Hydrolysis Time ◽  
Glucosamine Hydrochloride ◽  
Snail Shell ◽  
Randomized Design ◽  
Completely Randomized Design

ABSTRACT This study aims to determine the effect of pressure and time hydrolysis to produce glucosamine hydrochloride with the highest yield and the best quality of the chitosan of a snail shell. The study used a completely randomized design (CRD) factorial design consisting of 2 factors with 5 variations of hydrolysis time (40; 50; 60; 70 and 80) minutes and 2 variations of pressure (1 atm and 2 atm). Each treatment is done twice so obtained 20 experimental units. The highest glucosamine hydrochloride was obtained in hydrolysis time of 80 minutes and a pressure of 1 atm. Yield of 7,54%. Test of solubility in distilled water at 20°C was obtained of 3,79. Mol/L, while the maximum absorption of the UV-Vis with the addition of reagent Schales is at a wavelength of 420 nm. Keywords: Snails, Chitosan, Glucosamine, Hydrolysis Time, Pressure

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