scholarly journals A New Purification Process of Solanesol Based on Chemically Modified Diatomite

2022 ◽  
Vol 2160 (1) ◽  
pp. 012021
Author(s):  
Jing Liu ◽  
Xiaobin Han ◽  
Yulong Peng ◽  
Xiaoyan Wang ◽  
Runmeng Qiao ◽  
...  
Keyword(s):  
Hydrochloric Acid ◽  
Treatment Time ◽  
Separation Efficiency ◽  
Natural Material ◽  
Hydrochloric Acid Concentration ◽  
Separation And Purification ◽  
Modified Method ◽  
Modification Effect ◽  
Development And Utilization

Abstract Diatomite is a kind of natural material with adsorption capacity and it’s widely used in industry. The main purpose of this paper is to study the influence of hydrochloric acid concentration and modification time on the modification effect of diatomite. This article describes a modified method of diatomite, which can not only reduce the purification cost, but also improve the separation efficiency of solanesol. The results show that when the concentration of hydrochloric acid is 3mol/L and the treatment time is 50 minutes, the modification effect of diatomite is the best. The determination of the optimum technological conditions is conducive to the separation and purification of Solanesol by diatomite, and lays a foundation for the further development and utilization of diatomite.

Separation of Lead, Cadmium, and Iron in Analyses of Soil Samples

1995 ◽  
Vol 60 (6) ◽  
pp. 938-949 ◽  
Author(s):  
Ladislav Svoboda ◽  
Tomáš Šafařík ◽  
Uwe Schmidt
Keyword(s):  
Hydrochloric Acid ◽  
Soil Extract ◽  
Soil Samples ◽  
Hydrochloric Acid Concentration ◽  
Chloride Complexes ◽  
Lead And Cadmium ◽  
Selective Detector ◽  
Aas Method ◽  
Basic Anion

The conditions of sorption of chloride complexes of Pb2+, Cd2+, Fe2+, and Fe3+ ions from media of hydrochloric acid have been studied with a strongly basic anion exchanger - Ostion LG AT. The experiments used an exchanger microcolumn connected with atomic absorption spectrometer as a selective detector of metal ions. From the relation found between retention of the ions studied and hydrochloric acid concentration, conditions of separation have been suggested and used for separations of small amounts of lead and cadmium from many times higher amounts of iron and aluminium in soil extract before determination of both the foreign metals by means of AAS method. The yield of separation exceeded 95%.

Improved Selenium Recovery from Tissue with Modified Sample Decomposition

1991 ◽  
Vol 74 (3) ◽  
pp. 570-571
Author(s):  
William G Brumbaugh ◽  
Michael J Walther
Keyword(s):  
Hydrochloric Acid ◽  
Biological Tissue ◽  
Decomposition Method ◽  
Small Volume ◽  
Hydride Generation ◽  
Fish Tissue ◽  
Simple Modification ◽  
Modified Method ◽  
Sample Decomposition

Abstract The present paper describes a simple modification of a recently reported decomposition method for determination of selenium In biological tissue by hydride generation atomic absorption. The modified method yielded slightly higher selenium recoveries (3-4%) for selected reference tissues and fish tissue spiked with selenomethionine. Radiotracer experiments indicated that the addition of a small volume of hydrochloric acid to the wet digestate mixture reduced slight losses of selenium as the sample initially went to dryness before ashing. With the modified method, selenium spiked as selenomethionine behaved more like the selenium in reference tissues than did the inorganic spike forms when this digestion modification was used

Conductometric titration of hydrochloric acid in gastric juice.

1980 ◽  
Vol 26 (13) ◽  
pp. 1895-1897
Author(s):  
A P van Zanten ◽  
A van den Ende
Keyword(s):  
Hydrochloric Acid ◽  
Gastric Juice ◽  
Gastric Acidity ◽  
Aqueous Ammonia ◽  
Conductometric Titration ◽  
Ammonia Solution ◽  
Hydrochloric Acid Concentration ◽  
Aqueous Ammonia Solution ◽  
Equivalence Point

Abstract We describe a procedure for the determination of hydrochloric acid concentration in gastric juice by means of a conductometric titration of the 50-fold diluted sample with an aqueous ammonia solution. The conductometric method of endpoint indication leads to a definite location of the equivalence point in the titration of hydrochloric acid. The proposed method is simple and accurate and shows a good correlation with an accepted method for the measurement of gastric acidity.

ORGANIC REAGENTS FOR PLATINUM METALS: I. THE DETERMINATION OF PALLADIUM WITH 1,10-PHENANTHROLINE

1949 ◽  
Vol 27b (2) ◽  
pp. 67-71 ◽  
Author(s):  
D. E. Ryan ◽  
P. Fainer
Keyword(s):  
Hydrochloric Acid ◽  
Acid Concentration ◽  
Volumetric Method ◽  
Hydrochloric Acid Concentration ◽  
Platinum Metals ◽  
Chloride Solutions ◽  
Organic Reagents

Palladium may be precipitated quantitatively with 1,10-phenanthroline from palladous chloride solutions; variations in the hydrochloric acid concentration from 1 to 20% had no effect on the precipitation. The reagent yields no precipitates with other platinum metals under similar conditions; slightly high results, however, were obtained when palladium was precipitated from solutions containing these metals. The precipitate has the composition C12H8N2PdCl2 and may be used as a weighing form for palladium. A micro-volumetric method for palladium using 1,10-phenanthroline is described. Small amounts of platinum (as Pt+4) do not interfere.

Precious Nickel Recovery from Palm Oil Mill Fuel Ash Waste (Ni-POMFAW) Using Acidic Leaching Extraction (ALE)

2016 ◽  
Vol 705 ◽  
pp. 374-379
Author(s):  
Nurdin Said ◽  
Shahroom M. Shah Ahmad ◽  
V. Sivaguru Malar ◽  
A. Khairuddin Syafiqah ◽  
Athirah M. Sukri Hajar ◽  
...  
Keyword(s):  
Hydrochloric Acid ◽  
Acid Concentration ◽  
Palm Oil ◽  
Nickel Complex ◽  
Treatment Time ◽  
Hydrochloric Acid Concentration ◽  
Solution Ph ◽  
Nickel Recovery ◽  
Fuel Ash ◽  
Palm Oil Mill

This paper demonstrates precious recovery of nickel from physical pre-treated raw palm oil mill fuel ash waste (POMFAW). The acidic leaching extraction (ALE) using sulphuric and hydrochloric acids agents were carried out in a bath stirrer flask. Process parameter effects of acid concentration, solution pH and treatment time were investigated in the nickel recuperation. The highest nickel recovery (96.83%) was found by treatment time of 1 h, pH of 2.5 and hydrochloric acid concentration of 2.0 M. At the acids leaching higher than 2 M, the nickel recovery decreased. Results from acids leaching imply that nickel complex can be formed at substantial percentages within the acid concentration higher than 1 M. The hydrochloric acid provides impressive nickel compared sulphuric acid, and the POMFAW can be proposed as a substitute of non-renewable sources derived nickel for a promising material and the used ALE can be considered as a beneficial technique.

Determination of Ni(II) in Water Using Nanometer Attapulgite Adsorption via FAAS

2012 ◽  
Vol 599 ◽  
pp. 96-99
Author(s):  
Yan Min Hou ◽  
Xiao Jun Zhao ◽  
Ji Min Xie
Keyword(s):  
Detection Limit ◽  
Hydrochloric Acid ◽  
Acid Concentration ◽  
Environmental Water ◽  
Regression Equation ◽  
Experimental Results ◽  
Hydrochloric Acid Concentration ◽  
Elution Volume ◽  
Adsorbent Dosage

nanometer attapulgite is a fine adsorptive reagent to Ni(II) in specific pH,adsorbent dosage , surging and depositing time, hydrochloric acid concentration, elution volume , surging and depositing time for the recovery and static adsorptive capability. The experimental results show that Zn(II)、Co(II)、K+、Cu(II)、Na+、Mn(II)、Pb(II)、Hg(II) 、SiO32- 、WO42- 、MoO42- 、HPO42-、VO3- didn’t interfere the adsorption to Ni(Ⅱ). the linear range is 0.10~1.5ug/mL, the regression equation is A=0.0476C+0.0084 r=0.9996 .the detection limit is 0.190μg/mL for Ni(II),recovery is 86.7.5%-102.5%. This method can be used to the determination of Ni(II) in environmental water.

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