SYNTHESIS AND STUDY OF EFFECT OF CR3+ CONCENTRATION ON PHYSICAL PROPERTIES AND PYROELECTRIC PROPERTY OF THE PB(ZR0.825TI0.175)O3 CERAMIC SYSTEM
Published In: 6TH INTERNATIONAL CONFERENCE ON ADVANCES IN APPLIED SCIENCE AND ENVIRONMENTAL ENGINEERING
Author(s): TUAN NGUYEN DUY ANH
Abstract: In this paper, the effects of Cr3+concentrations on some physical properties and pyroelectric properties of the ceramic system of (1-x)Pb(Zr0.825Ti0.175)O3– xCr2O3, where x = 0; 0.50; 0.75; 1.00; 1.25; 1.50; 2.00% mol have been presented. Experimental results indicated that Cr3+ concentrations are of great effect on the mentioned above physical properties of the ceramics. X-ray diffraction diagrams indicated that exist pure perovskite phases with rhombohedral structure in all of ceramic compositions of the system. From SEM images we can see that rhombohedral grains of 2 m size closely arranged with small pores. Besides, ceramic densities, dielectric constants, dielectric loss factor are presented with respective values of = 7.48 g/cm3, e/e0 = 343, tan= 0.03 for the optimal Cr2O3 concentration of 1.25% mol. Cr3+ concentrations are of very strong effect on structure, microstructure and electric property of the studied system. The electric conductivity are of very small values = 2.9
- Publication Date: 27-Nov-2016
- DOI: 10.15224/978-1-63248-108-5-03
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BENEFITS OF USING BIOGAS TECHNOLOGY IN AGRICULTURAL AREA IN SUPPORTING ORGANIC FERTILIZER FOR LOCAL FARMERS IN KARO DISTRICT, NORTH SUMATERA PROVINCE, INDONESIA
Published In: 6TH INTERNATIONAL CONFERENCE ON ADVANCES IN APPLIED SCIENCE AND ENVIRONMENTAL ENGINEERING
Author(s): ABDUL RAUF , NURZAINAH GINTING
Abstract: This study has been conducted in an agricultural hilly area of Karo District, in North Sumatera Province, Indonesia. The study was conducted in May until July 2016. The objective of this study is to analyse slurry characteristics as organic fertilizer in which biogas is used to yield better slurries. Five biodigesters were used with 5 differents designs of mix materials: T1) 100% cow feces, T2) 75% cow feces + 25% argicultural waste, T3)50% cow feces + 50% agricultural waste, T4) 25% cowfeces + 75% agricultural waste, and T5)100% agricultural waste. The parameters measured were slurry production and slurry chemical compositions including N,P ,K, pH, and C/N.The result showed that T1 and T2 were better in chemical compositions( N,P,K, pH and C/N) while all treatments produce equal volume of slurry. It is suggested that local farmers use the composition of T1 and T2 when using biogas technology in supporting organic fertilizer. It is noteworthy that this first study is continued with the
- Publication Date: 27-Nov-2016
- DOI: 10.15224/978-1-63248-108-5-35
- Views: 0
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