scholarly journals Production of Bio-Calcium Oxide Derived from Hatchery Eggshell Waste Using an Industrial-Scale Car Bottom Furnace

2022 ◽  
Vol 10 (4) ◽  
pp. 1137-1151
Author(s):  
Ajchara Imkum Putkham ◽  
Suwanan Chuakham ◽  
Yuwadee Chaiyachet ◽  
Tanapon Suwansopa ◽  
Apipong Putkham
Keyword(s):  
Calcium Oxide ◽  
Industrial Scale ◽  
Eggshell Waste

Effect of calcium oxide in the zinc-boro-soda-lime-silica glass matrix by using eggshell waste as calcium source

2022 ◽  
Vol 128 (1) ◽  
Author(s):  
Nurul Afiqah Mohamad Yamin ◽  
Mohd Hafiz Mohd Zaid ◽  
Khamirul Amin Matori ◽  
Josephine Liew Ying Chyi ◽  
Siti Norul Fadhilah Zalamin ◽  
...  
Keyword(s):  
Calcium Oxide ◽  
Silica Glass ◽  
Glass Matrix ◽  
Soda Lime ◽  
Calcium Source ◽  
Soda Lime Silica Glass ◽  
Eggshell Waste

Properties of Waste Eggshell as Calcium Oxide Catalyst

2015 ◽  
Vol 754-755 ◽  
pp. 171-175 ◽  
Author(s):  
Razi Ahmad ◽  
Rohazriny Rohim ◽  
Naimah Ibrahim
Keyword(s):  
Calcium Oxide ◽  
Renewable Resources ◽  
Oxide Catalyst ◽  
Functional Group ◽  
X Ray ◽  
Thermal Gravimetric Analyzer ◽  
Regular Shape ◽  
Suitable Temperature ◽  
Eggshell Waste ◽  
Group Distribution

The widespread usage of commercial calcium oxide (CaO) may lead to the depletion due to its non-renewable resources. CaO from eggshell waste has been studied to replace commercial CaO as it is cheaper and reduce cost of production. The objective of this study was to characterize CaO from waste eggshell. Raw eggshell was analyzed by thermal gravimetric analyzer (TGA) to obtain calcination temperature. The raw eggshell and calcined eggshell were characterized by x-ray fluorescence (XRF) and Fourier transform infrared (FTIR) spectroscopy to obtain elemental composition and functional group distribution. The morphologies of eggshell structures were determined by scanning electron microscope (SEM). TGA showed that the suitable temperature for calcination was 900oC. XRF and FTIR results showed that calcium carbonate (CaCO3) in the raw eggshell had been transformed to CaO. The irregular shape of raw eggshell also had been changed to regular shape for calcined eggshell.

Synthesis of Sustainable and High Purity of Quicklime Derived from Calcination of Eggshell Waste in a Laboratory-Scale Rotary Furnace

2021 ◽  
Vol 904 ◽  
pp. 419-426
Author(s):  
Suwanan Chuakham ◽  
Apipong Putkham ◽  
Ajchara Imkum Putkham ◽  
Sukaranan Kanokwan
Keyword(s):  
Calcium Oxide ◽  
Chemical Properties ◽  
Rotary Furnace ◽  
Laboratory Scale ◽  
X Ray Diffraction ◽  
Quick Lime ◽  
X Ray ◽  
Physical And Chemical ◽  
Eggshell Waste ◽  
Degree Slope

Quick lime or calcium oxide has attracted significant attention as a sustainable material to be used as fillers and catalysts in a broad range of industries. The quick lime derived from calcination of eggshell waste in a laboratory-scale rotary furnace is reported in this study. The eggshell waste was prepared by washing several times, drying in the sun, grinding and sieving through a 250 micrometers sieve size. Calcination of the sieved eggshells waste was conducted in a single zone rotary tube furnace at 800 °C with 5 degree slope and at 1 rpm. Both physical and chemical properties of the calcium oxide derived from the calcination of eggshell waste were systematically investigated by various scientific instruments. The results from powder X-Ray Diffraction (PXRD) and X-Ray Fluorescence: (XRF) showed that most of the calcium carbonate in the eggshell waste was thermally transformed to nano-calcium oxide with mean crystallite size of 47.5 nm and with a purity of 97.8%. The results from this study indicated the optimum conditions and the possibility for mass production of nano-calcium oxide via rotary furnace and have shown that the obtained nano-calcium oxide is comparable to the commercial chemical.

Changing of Particle Size and Pore Structures of Calcium Oxide during Calcinations of Industrial Eggshell Waste

2020 ◽  
Vol 998 ◽  
pp. 90-95
Author(s):  
Apipong Putkham ◽  
Somchai Ladhan ◽  
Ajchara Imkum Putkham
Keyword(s):  
Particle Size ◽  
Surface Area ◽  
Calcination Temperature ◽  
Calcium Oxide ◽  
Lower Surface ◽  
Holding Time ◽  
Median Particle Size ◽  
Air Atmosphere ◽  
Median Particle ◽  
Eggshell Waste

Surface area and particle size are significant properties of a catalyst that determine the reaction rate of the heterogeneous catalyst. In this research, calcium oxide derived from industrial eggshell waste was synthesized by thermal decomposition method under air-atmosphere. The obtained eggshell waste was washed, dried, and ground to 420 μm followed by calcination of the ground eggshell in different conditions including calcination temperature (800 to 900 °C) and holding time (1 to 4 hours). Changes of pore structure and the median particle size diameter of the obtained calcium oxides were systematically investigated by various scientific instruments. Results from powder X-ray diffractometer (PXRD) indicated that the calcium oxide can be obtained after calcination at both 800 and at 900°C. Laser diffractometer shows that median particle size diameter of calcium oxide significantly decreased by about 76-95 % with increasing of both calcination temperature and holding time. Additionally, specific surface area of calcium oxides determined by N2 adsorption experiment at-195 °C shows that surface area of calcium oxide dramatically decreased (37-84 %) with increasing both calcination temperature from 800 to 900 °C and calcination time from 1 to 4 hours. These results indicated that both calcination temperature and time play an important role in the shrinkage of pores of calcium oxide. Higher calcination temperature and longer holding time induce more shrinkage of pore leading to smaller particle size diameter and lower surface area of the calcium oxide catalyst.

Eggshell waste to produce building lime: calcium oxide reactivity, industrial, environmental and economic implications

2018 ◽  
Vol 51 (5) ◽  
Author(s):  
Eduardo Ferraz ◽  
José A. F. Gamelas ◽  
João Coroado ◽  
Carlos Monteiro ◽  
Fernando Rocha
Keyword(s):  
Calcium Oxide ◽  
Economic Implications ◽  
Eggshell Waste

Antioxidant activity of three polyphenol-enriched cocoa products obtained on an industrial scale

Planta Medica ◽  
2009 ◽  
Vol 75 (09) ◽  
Author(s):  
JL Ríos ◽  
G Schinella ◽  
S Mosca ◽  
E Cienfuegos-Jovellanos ◽  
MA Pasamar ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Industrial Scale ◽  
Cocoa Products

Application of pure, thermostable, alkali-tolerant xylanase in bleaching of oxygen-delignified pine kraft pulp

TAPPI Journal ◽  
2015 ◽  
Vol 14 (11) ◽  
pp. 689-694
Author(s):  
QINGZHI MA ◽  
QI WANG ◽  
CHU WANG ◽  
NIANJIE FENG ◽  
HUAMIN ZHAI
Keyword(s):  
Intrinsic Viscosity ◽  
Chlorine Dioxide ◽  
High Purity ◽  
Kraft Pulp ◽  
Alkaline Media ◽  
Industrial Scale ◽  
Elemental Chlorine ◽  
Effect Of Oxygen ◽  
Alkaline Tolerant ◽  
Ecf Bleaching

The effect of oxygen (O2)-delignified pine kraft pulp pretreatment by high-purity, thermostable, and alkaline-tolerant xylanases on elemental chlorine free (ECF) bleaching of O2-delignification kraft pulp was studied. The study found that xylanase pretreatment preserved the intrinsic viscosity and yield of O2-delignified pulp while causing about 7% of delignification with high delignification selectivity. The xylanases with high purity, higher thermostability (75°C~80°C) in highly alkaline media (pH 8.0~9.5) could be applied on an industrial scale. Pulp pretreatment by the high-purity, thermostable, and alkaline tolerant xylanases could improve pulp brightness or reduce the chlorine dioxide (ClO2) consumption. In a D0ED1D2 bleaching sequence using the same amount of ClO2, the xylanase-pretreated pulp obtained a higher brightness (88.2% vs. 89.7% ISO) at the enzyme dose of 2 U/g pulp; or for the same brightness as control (88.2% ISO), the ClO2 dosage in the D0 stage was reduced by 27%, which represents a 16% savings in total ClO2 used for bleaching.

How to make Russia a prosperous industrial country (about the role of the oil production and refining complex)

2020 ◽  
pp. 22-28
Author(s):  
Yu. Kanataev
Keyword(s):  
Precious Metals ◽  
Oil Production ◽  
Industrial Country ◽  
Industrial Scale ◽  
Deep Processing ◽  
Domestic Technology ◽  
Petrochemical Complex ◽  
Russian Economy ◽  
Further Development

The author, head of the Association of science-intensive enterprises having great experience in exploration of oil, precious metals, etc. in Russia and abroad (Austria, China, Israel, Ethiopia), first implemented on an industrial scale deep processing of oil using domestic technology, discusses the problems of further development of the Russian economy through the prism of their solutions to the main industries — oil and petrochemical complex.

Recalcification of Carious Lesion with Aids of Calcium Oxide Nanoparticles

2020 ◽  
Vol 23 (12) ◽  
Author(s):  
Bushra Habeeb Al-Maula ◽  
Suhad Jabbar Al-Nasrawi ◽  
Alaa Dakhil Yassir ◽  
Abtesam Imhemed Aljdaimi ◽  
Ruba Mansour Mustafa ◽  
...  
Keyword(s):  
Calcium Oxide ◽  
Oxide Nanoparticles ◽  
Carious Lesion
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