scholarly journals Synthesis Of Mg/Al Hydrotalsite-Magnetite As CN- Ion Adsorbent On Wastewater Tapioca Industry

2021 ◽  
Vol 3 (2) ◽  
pp. 69-75
Author(s):  
Maudi Aulia
Keyword(s):  
Industrial Wastewater ◽  
Liquid Waste ◽  
Wave Number ◽  
X Ray Diffraction ◽  
Adsorption Method ◽  
Waste Solution ◽  
Composite Formation ◽  
Wave Numbers ◽  
Magnetite Phase

Cyanide compounds contained in tapioca industrial wastewater are relatively high, so it is necessary to reduce cyanide levels. This study utilizes the hydrotalcite-magnetite ability to adsorption of CN- ions. The composite formation process is carried out by mixing the magnetite phase at the stage of hydrotalcite-magnetite synthesis. The characterization of X-Ray Diffraction (XRD) shows reflection of the magnetite peak of 2θ 21.42°; 30,28°; 33.40°;35.65° and 37°. While the peak of hydrotalocites at an angle of 11.66° ; 23,33° ; 34,80° ; 60,92° ; and 62.21°. This result is supported by ir spectra on hydrotalocytes shown by O-H group at wave number 3441 cm-1, O=C-O at wave numbers 1359 cm-1, M-O and M-OH at wave numbers 964 cm-1, 797 cm-1 and 673 cm-1. Fe-O and Fe-OH absorption from magnetites at wave numbers 892 cm-1, 798 cm-1 and 629 cm-1. 0.4 grams of hydrotalcite-magnetite at 30 minutes of stirring absorbed 0.0490 mg/L of cyanide from tapioca liquid waste solution. The value of adsorption capacity is 0.022 mg/g and the adsorption efficiency is 87.96%. The hydrotalcite-magnetite adsorption method is superior to aerob and anaerobic methods using bacteria in the tapioca industry.

Analysis of Genotoxicity and Characterization of Dissolved Organic Matter in the Aniline Industrial Wastewater

2014 ◽  
Vol 1010-1012 ◽  
pp. 472-477 ◽  
Author(s):  
Zhe Wang ◽  
Wen Yu Zhao ◽  
Li Wei Xu ◽  
Qi Mu
Keyword(s):  
Organic Matter ◽  
Wastewater Treatment ◽  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Industrial Wastewater ◽  
Adsorption Method ◽  
Resin Adsorption ◽  
Hydrophobic Acids ◽  
A Company

Effluent of aniline wastewater treatment from a company was isolated and fractionated by resin adsorption method into six different fractions. These fractions are operationally categorized as hydrophobic acids (HOA), hydrophobic bases (HOB), hydrophobic neutrals (HON), hydrophilic acids (HIA), hydrophilic bases (HIB) and hydrophilic neutrals (HIN). The dissolved organic carbon (DOC), ultraviolet-visible (UV) and genotoxicity of each fractions were determined. The results showed that hydrophobic matter is the main fractions of DOC and makes the main contributions to the genotoxicity of effluent of aniline wastewater treatment.

scholarly journals CALCIUM OXIDE CHARACTERISTICS PREPARED FROM AMBUNTEN’S CALCINED LIMESTONE

2018 ◽  
Vol 5 (1) ◽  
pp. 65 ◽  
Author(s):  
Fatimatul Munawaroh ◽  
Laila Khamsatul Muharrami ◽  
Triwikantoro Triwikantoro ◽  
Zaenal Arifin
Keyword(s):  
Calcium Carbonate ◽  
Chemical Composition ◽  
Calcium Oxide ◽  
Crystalline Phase ◽  
Wave Number ◽  
Test Results ◽  
X Ray Diffraction ◽  
X Ray ◽  
Oxide Characteristics

<pre>Calcium oxide (CaO) and calcium carbonate (CaCO3) are widely used in industry. CaO and CaCO3 can be synthesized or derived from limestone. The purpose of this study to determine the characteristics of CaO calcined limestone from Ambunten Sumenep. Lime in calcined at 850 ° C for 6 hours. Characterization of X-ray fluorescence (XRF) was conducted to determine the chemical composition of limestone, X-ray diffraction test (XRD) to find the lime crystalline phase and FTIR test to determine the absorption of wave number. XRF test results showed that the limestone chemical composition consisted of Ca of 95.37% as the dominant element, Mg of 4.1%, Fe 0.17% and Y by 0.39%. The XRD test results showed that the limestone crystal phase is ankerite (Ca [Fe, Mg] [CO3] 2) and after the calcined phase calcination is vaterite (Ca [OH] 2), calcite (CaO) and calcite (CaCO3). While the FTIR test results show that the CaO spectra are seen at 3741.24, 1417.12 and 874.14 cm</pre><sup>-1</sup><pre>.</pre>

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 Synthesis and Characterization of Magnetite-Alginate Nanoparticles for Enhancement of Nickel and Cobalt Ion Adsorption from Wastewater

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Omnia A. A. El-Shamy ◽  
Ragaa E. El-Azabawy ◽  
Olfat. E. El-Azabawy
Keyword(s):  
Metal Ions ◽  
Adsorption Process ◽  
Ion Adsorption ◽  
X Ray Diffraction ◽  
Adsorption Method ◽  
Freundlich Model ◽  
X Ray ◽  
Transmission Electron ◽  
Absorption Measurements

Superparamagnetic magnetite-alginate nanoparticles (M-AlgNPs) were synthesized utilizing a coprecipitation method. Then, the prepared M-AlgNPs were characterized via Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction spectroscopy (XRD) to affirm the formation and the crystallinity of this composite. In addition, the surface morphology of the prepared nanoparticles was inspected by transmission electron microscopy (TEM) which revealed well-dispersed nanoparticles of Fe3O4 into alginate. The adsorption characteristics of the synthesized nanoparticles for removing Ni+2 and Co+2 from wastewater were evaluated via atomic absorption measurements (AAS). The elimination efficiency of the M-AlgNPs was detected at pH=7 in 100 ppm (initial concentration) of Ni+2 and Co+2, separately. The M-AlgNPs provided the maximum equilibrium uptake percentage for Ni+2 and Co+2 of 97.88 and 95.01%, respectively. The adsorption of Ni+2 and Co+2 onto the M-AlgNP surface was found to fit the Langmuir model with R2 values higher than that obtained from the Freundlich model for both metal ions. Moreover, RL “separating factor” for the adsorption process was assessed and found to be less than unity; this expresses the higher ability of the investigated metal ions to be adsorbed onto the M-AlgNP surface. The adsorption method was discovered to be pH-dependent and well-suited to the isothermal equations of Langmuir and Freundlich. For regeneration studies, M-AlgNPs have been investigated and results confirmed that it could be reused with effective sorption capacity over three cycles.

scholarly journals Preparation and characterization of magnetite-based silica nanocomposite

2004 ◽  
pp. 121-129 ◽  
Author(s):  
Mihaela Popovici ◽  
Cecilia Savii ◽  
Daniel Niznanský ◽  
Jan Subrt ◽  
Eva Vecernikova ◽  
...  
Keyword(s):  
Thermal Analyses ◽  
Sol Gel ◽  
Nitrogen Atmosphere ◽  
Thermal Treatments ◽  
Vibrating Sample Magnetometry ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Magnetite Phase

Sol-gel method and successive thermal treatments in vacuum and nitrogen atmosphere were employed to synthesize magnetite nanoparticles isolate them with the aid of amorphous silica. Thermogravimetric and differential thermal analyses coupled with mass spectrometry, X-ray diffraction, transmission electron microscopy, M?ssbauer spectroscopy and vibrating sample magnetometry measurements were performed on the obtained nanocomposites. The effect of atmosphere on the formation of magnetite phase was remarkable.

Synthesis of Reduced Graphene Oxide (rGO)/Ni Composite by a Combination of Marcano’s and Microwave Assisted Reduction Methods

2015 ◽  
Vol 1112 ◽  
pp. 290-293 ◽  
Author(s):  
Ferry Iskandar ◽  
Yahdi bin Rus
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Wave Number ◽  
X Ray Diffraction ◽  
Graphene Layers ◽  
Microwave Assisted ◽  
Reduced Graphene ◽  
Reduction Methods ◽  
Microscope Photograph

A reduced graphene oxide/nickel (rGO/Ni) composite has been succesfully synthesized using a combination of Marcano’s method for synthesizing graphene oxide (GO), subsequently followed by a facile microwave assisted reduction method. X-ray diffraction results show the presence of graphene and nickel on the prepared samples. In addition, the Fourier Tansform Infrared Spectroscopy measurement showed that the absorption peaks of O-H, C=O, C-OH, and C-O only appear in the GO sample. A Scanning Electron Microscope photograph shows that the morphology of the rGO samples contain nano-layered forms. A Raman spectroscopy characterization of the prepared rGO samples show a peak of G band’s wave number at 1586.5 cm-1. From the calculation of the G band’s wave number, the average number of graphene layers is 1.15.

Development and characterization of polymer-based composites filled with micro-sized waste marble dust

2020 ◽  
pp. 096739112092606
Author(s):  
Sandip Kumar Nayak ◽  
Alok Satapathy
Keyword(s):  
Impact Strength ◽  
X Ray Diffraction ◽  
Construction Sites ◽  
New Class ◽  
Composite Formation ◽  
Marble Dust ◽  
Local Construction ◽  
Polyester Composites ◽  
Experimental Findings

This investigation explores the possibility of developing a new class of particulate-filled polyester composites using waste marble dust as filler. The dusts collected from local construction sites are sieved to three different sizes (58, 110, and 155 μm). Polyester composites are fabricated with filler in different weight proportions (0, 8, 16, 24, 32, and 40 wt%). A Fourier transform infrared spectroscopy study is done to get an insight into the chemistry of composite formation. Scanning electron microscopy reveals the surface features of the filler as well as the composites. X-Ray diffraction tests are carried out on the raw filler and on the composites to ascertain the presence of hard phases. The experimental findings suggest that, while the tensile and flexural strengths of the composites marginally drop with the incorporation of marble dust, there is reasonable improvement in compressive strength, impact strength, and Shore hardness. The density and voids are also affected by the size and content of filler particles in the composite. Armed with lightweight, improved hardness, and impact strength, these polyester–marble composites are expected to find potential use in wear-related engineering applications.

scholarly journals Synthesis and Characterization of Iron Oxide Nanoparticles and Applications in the Removal of Heavy Metals from Industrial Wastewater

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Zuolian Cheng ◽  
Annie Lai Kuan Tan ◽  
Yong Tao ◽  
Dan Shan ◽  
Kok Eng Ting ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Industrial Wastewater ◽  
Maghemite Nanoparticles ◽  
X Ray Diffraction ◽  
Toxic Heavy Metals ◽  
Solution Ph ◽  
X Ray ◽  
Adsorption Data ◽  
Removal Of Heavy Metals

This study investigated the applicability of maghemite (γ-Fe2O3) nanoparticles for the selective removal of toxic heavy metals from electroplating wastewater. The maghemite nanoparticles of 60 nm were synthesized using a coprecipitation method and characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectroscopy (EDX). Batch experiments were carried out for the removal of Pb2+ions from aqueous solutions by maghemite nanoparticles. The effects of contact time, initial concentration of Pb2+ions, solution pH, and salinity on the amount of Pb2+removed were investigated. The adsorption process was found to be highly pH dependent, which made the nanoparticles selectively adsorb this metal from wastewater. The adsorption of Pb2+reached equilibrium rapidly within 15 min and the adsorption data were well fitted with the Langmuir isotherm.

Advanced Materials with Photocatalytic Properties and Magnetic Core for Environmental Applications

2015 ◽  
Vol 1114 ◽  
pp. 81-85 ◽  
Author(s):  
Andra Predescu ◽  
Ecaterina Matei ◽  
Andrei Predescu ◽  
Cristian Predescu ◽  
Cristina Covaliu ◽  
...  
Keyword(s):  
Industrial Wastewater ◽  
High Efficiency ◽  
Sol Gel ◽  
Magnetic Core ◽  
Advanced Materials ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
Ferrous Chloride ◽  
Co Precipitation

The paper had as purpose the fabrication and characterization of magnetic nanoparticles covered with TiO2 for applications in environmental field. The research consisted in investigating the properties of magnetic iron nanooxides, synthesized from ferric and ferrous chloride and then covered with TiO2, with minimum costs and high efficiency in industrial wastewater treatment. The iron nanoparticles were obtained by co-precipitation method and the titan dioxide was obtained by sol-gel method. After covering the nanoparticles with TiO2, the samples were characterized by X-Ray diffraction (XRD) and scanning electron microscopy (SEM).

scholarly journals REMOVAL OF DYES IN SONGKET WASTE WATER BY USING PHOTOCATALYST Chitosan-TiO2

2020 ◽  
Vol 4 (1) ◽  
pp. 1
Author(s):  
Kurniawati - Oktarina
Keyword(s):  
Waste Water ◽  
Absorption Band ◽  
Uv Light ◽  
Liquid Waste ◽  
Water Medium ◽  
Ftir Analysis ◽  
Wave Numbers ◽  
Optimum Wavelength ◽  
Supporting Material

Photocatalyst is one of the catalysts that works when given a certain light and generally is a semiconductor that has a full valence band and an empty conduction band, such as TiO2. Synthesis of chitosan-TiO2 nanocomposite research has been carried out, nanocomposites produced from squid cartilage as chitosan-?. Nanocomposites are synthesized by combining chitosan as a supporting material and TiO2 which has a function as a high photocatalytic. Characterization of chitosan-TiO2 nanocomposites by FTIR and SEM / EDX which shows the functional groups and surface morphology of the nanocomposite. FTIR analysis shows the absorption band of O-Ti-O in the region of 678.98 cm-1 and the typical absorption of chitosan at wave numbers –OH 3425.58 cm 1, 3834.49 cm-1, and 3873.06 cm-1. From SEM / EDX analysis it can be seen that TiO2 is evenly distributed on the surface of chitosan. Then nanocomposite was applied with wrna procion in Palembang songket liquid waste. Chitosan-TiO2 nanocomposites from squid cartilage were able to degrade procion dyes in water medium with the help of UV light at the optimum wavelength of 520 nm, where the percentage of photodegradation was 54.47%. Which nanocomposite is also able to reduce the concentration of procion dyes from 5 mg / L to 1.9 mg / L with an initial acidity (pH) of 10.34 to 7.13. Key words: Photocatalyst, nanocomposites, Procion Red

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