The effect of temperature and leaching time of sulfuric acid on increasing nickel and iron content from ferronickel slag waste after alkaline fusion using sodium carbonate

2020 ◽  
Author(s):  
Prinanda Doni Santoso ◽  
Arryan Jibril R. ◽  
Agus Budi Prasetyo ◽  
Ahmad Maksum ◽  
Reza Miftahul Ulum ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Sodium Carbonate ◽  
Iron Content ◽  
Effect Of Temperature ◽  
Alkaline Fusion ◽  
Ferronickel Slag ◽  
Slag Waste

Effect of sodium carbonate (Na2CO3) additives and palm kernel shell charcoal to increase nickel and iron content from ferronickel slag using the pyrometallurgical method

2020 ◽  
Author(s):  
Muhammad Darryl Alfariz ◽  
Wahyu Mayangsari ◽  
Agus Budi Prasetyo ◽  
Ahmad Maksum ◽  
Totok Prasetyo ◽  
...  
Keyword(s):  
Sodium Carbonate ◽  
Iron Content ◽  
Palm Kernel ◽  
Palm Kernel Shell ◽  
Ferronickel Slag

The effect of temperature on the iron content of banana suckers.

1984 ◽  
Vol 7 (1-5) ◽  
pp. 725-731 ◽  
Author(s):  
E. Lahav ◽  
D.W. Turner
Keyword(s):  
Iron Content ◽  
Effect Of Temperature

scholarly journals Effect of High Temperature on the Electrochemical and Optical Properties of Emeraldine Salt Doped with DBSA and Sulfuric Acid

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Salma Gul ◽  
Anwar-ul-Haq Ali Shah ◽  
Salma Bilal
Keyword(s):  
Thermal Stability ◽  
Cyclic Voltammetry ◽  
Sulfuric Acid ◽  
Effect Of Temperature ◽  
Visible Spectroscopy ◽  
Emeraldine Salt ◽  
Higher Temperature ◽  
Stability Effect ◽  
Thermal Stability Of ◽  
Comprehensive Study

A comprehensive study of thermally treated polyaniline in its emeraldine salt form is presented here. It offers an understanding of the thermal stability of the polymer. Emeraldine salt was prepared by a novel emulsion polymerization pathway using dodecylbenzene sulfonic acid and sulfuric acid together as dopants. The effect of temperature and heating rate on the degradation of this emeraldine salt was studied via thermogravimetric analysis. The thermally analyzed sample was collected at various temperatures, that is, 250, 490, 500, and 1000°C. The gradual changes in the structure of the emeraldine salt were followed through cyclic voltammetry, Fourier transform infrared spectroscopy, and ultraviolet-visible spectroscopy. Results demonstrate that emeraldine salt shows high thermal stability up to 500°C. This is much higher working temperature for the use of emeraldine salt in higher temperature applications. Further heat treatment seems to induce deprotonation in emeraldine salt. Cyclic voltammetry and ultraviolet-visible spectroscopy revealed that complete deprotonation takes place at 1000°C where it loses its electrical conductivity. It is interesting to note that after the elimination of the dopants, the basic backbone of emeraldine salt was not destroyed. The results reveal that the dopants employed have a stability effect on the skeleton of emeraldine salt.

scholarly journals Study on the Improvement of Essential Oil Quality and Its Repellent Activity of Betel Leaves Oil (Piper betle l.) from Indonesia

2018 ◽  
Vol 34 (6) ◽  
pp. 2913-2926 ◽  
Author(s):  
Dante Alighiri ◽  
Edy Cahyono ◽  
Willy Tirza Eden ◽  
Ersanghono Kusuma ◽  
Kasmadi Imam Supardi
Keyword(s):  
Citric Acid ◽  
Essential Oil ◽  
Sodium Carbonate ◽  
Iron Content ◽  
Oil Quality ◽  
Acid Value ◽  
Piper Betle ◽  
Significant Difference ◽  
Main Component

The study to improve the quality of Indonesia betel leaves oil is done by treatment of citric acid and sodium carbonate. The treatment showed that the iron content and acid value were reduced optimally in the addition of 5% (w/w) citric acid (12 hours, 50oC) and 5% (w/w) sodium carbonate (9 hours, 50oC) yielded 0.45 mg/L of iron content and 1.00 mg/g of acid value, respectively. The main component of Indonesia betel leaves oil are 4-allyl phenylacetate. The descriptive sensory analysis showed that there were differences between betel leaves oil from Bogor compared with Boyolali and Makassar. There is a significant difference that the content of betel leaves oil from Bogor contains an isoeugenol compound of 20.71% while, Boyolali and Makassar contain eugenol of 17.02 and 19.21%, respectively. The study of the insect repellency indicated that Indonesia betel leaves oil potentially used as mosquito of Aedes aegypti repellent.

Kinetics of sulfuric acid breakdown of beryl raw material activated by fusion with sodium carbonate

2015 ◽  
Vol 88 (9) ◽  
pp. 1555-1558
Author(s):  
V. I. Samoilov ◽  
G. S. Bekimbaeva ◽  
Zh. S. Onalbayeva ◽  
N. A. Kulenova
Keyword(s):  
Sulfuric Acid ◽  
Sodium Carbonate ◽  
Raw Material ◽  
Kinetics Of

Effect of temperature and state of hydration on rate of imbibition in soft seeds of yellow serradella

2004 ◽  
Vol 55 (1) ◽  
pp. 39 ◽  
Author(s):  
G. B. Taylor
Keyword(s):  
Sulfuric Acid ◽  
Free Water ◽  
Negligible Effect ◽  
Moisture Loss ◽  
Effect Of Temperature ◽  
Moisture Uptake ◽  
Constant Weight ◽  
Moist Atmosphere ◽  
Ornithopus Compressus ◽  
Hydration And Dehydration

Seeds were removed by hand from pods of yellow serradella (Ornithopus compressus L.) cvv. Santorini and Charano and accession GRC5045-2-2 that were taken from the field on 26 March after burial treatment to initiate seed softening. Times taken for soft seeds to imbibe were determined at constant temperatures of 8�, 20�, and 30�C. Rates of moisture uptake and loss were measured in seeds held in a moist (76% RH) or dry (over sulfuric acid) atmosphere and the effects of hydration and dehydration on subsequent imbibition times determined at 20�C.Temperature had negligible effect on imbibition times in GRC5045-2-2, in which nearly all soft seeds imbibed within 24 h of wetting. Imbibition times in individual seeds of both Charano and Santorini varied from a few days to more than 200 days and were markedly reduced by increasing temperatures. Times taken to approach constant weight in the moist atmosphere were approximately 75, 165, and 430 days in GRC5045-2-2, Charano, and Santorini, respectively. By contrast the rate of moisture loss in the dry atmosphere was similar in all lines. Imbibition times in GRC5045-2-2 were little affected by state of hydration, but in both Santorini and Charano, imbibition was delayed by dehydration and accelerated by hydration.It is proposed that slow imbibition is attributable to the presence of a minute opening in the seed at an as yet unidentified site (possibly the micropyle or hilum) that restricts moisture uptake until a threshold is reached when seeds in contact with water imbibe rapidly. It is hypothesised that the moisture threshold coincides with the build up of sufficient moisture in tissues associated with the underside of the lens, to cause its rupture, thereby allowing rapid uptake of free water.

Effect of temperature upon the dissolution of molybdenum-coated steels in sulfuric acid

1975 ◽  
Vol 14 (3) ◽  
pp. 223-225 ◽  
Author(s):  
V. M. Sharov ◽  
E. I. Kozlov ◽  
D. M. Karpinos ◽  
V. G. Zil'berberg ◽  
N. I. Biryukov
Keyword(s):  
Sulfuric Acid ◽  
Effect Of Temperature
Sign in / Sign up

Export Citation Format

Share Document