scholarly journals Synthesis and Certification of Lanthanum Oxide Extracted from Monazite Sand

2020 ◽  
Vol 20 (6) ◽  
pp. 1213
Author(s):  
Samin Samin ◽  
Suyanti Suyanti ◽  
Susanna Tuning Sunanti ◽  
Wisnu Ari Adi
Keyword(s):  
Reference Material ◽  
Chemical Engineering ◽  
Lanthanum Oxide ◽  
Average Concentration ◽  
Added Value ◽  
Pilot Plant Process ◽  
Oxalate Precipitation ◽  
Accredited Laboratories ◽  
Plant Process ◽  
Xrd Method

Synthesis and certification of lanthanum oxide extracted from monazite sand have been carried out. This research aimed to increase the added value of monazite sand and obtain the lanthanum oxide in-house certified reference material (CRM). Synthesis of lanthanum oxide consists of several stages, namely: monazite sand digestion, rare-earth elements hydroxide [REE(OH)3] precipitation, Ce separation, Nd separation, lanthanum oxalate precipitation, and calcination. Certification of lanthanum oxide was carried out by determining the average concentration of the oxides and its uncertainty from the seven accredited laboratories by the ISO 35-2006 statistical method. Two other minerals in the lanthanum oxide analyzed by the XRD method were cerium hydroxide [Ce(OH)3] and neodymium yttrium oxide fluoride (Nd2Y2O3F16). Lanthanum oxide certified contains ten oxides, with the two highest concentrations of La2O3 (91.662 ± 0.007)% and Nd2O3 (3.949 ± 0.002)%. Lanthanum oxide has met the qualification in-house CRM since it contained water less than 1%, was homogeneous, stable, and certified. La2O3 concentration in the lanthanum oxide in-house CRM from CSAT-BATAN, Indonesia was not significantly different in comparison to that from the Department of Chemical Engineering, Srinakharinwirot University, Thailand. Lanthanum oxide extracted from monazite sand can be used as reference material in determining the lanthanum oxide quality from the pilot plant process.

Pilot-plant process for starch xanthide encapsulated pesticides

1979 ◽  
Vol 24 (1) ◽  
pp. 153-159 ◽  
Author(s):  
E. I. Stout ◽  
B. S. Shasha ◽  
W. M. Doane
Keyword(s):  
Pilot Plant ◽  
Pilot Plant Process ◽  
Plant Process

Low Temperature Chemical Rubber by a Continuous Pilot Plant Process

1949 ◽  
Vol 41 (8) ◽  
pp. 1568-1570 ◽  
Author(s):  
Robert W. Laundrie ◽  
Roger F. McCann
Keyword(s):  
Low Temperature ◽  
Pilot Plant ◽  
Pilot Plant Process ◽  
Plant Process

scholarly journals Feed reference materials in the system of metrological support of agro-industrial complex laboratories

2021 ◽  
Vol 17 (1) ◽  
pp. 5-20
Author(s):  
G. A. Stupakova ◽  
S. A. Dengina ◽  
E. E. Ignatyeva ◽  
T. I. Shchipletsova ◽  
D. K. Mitrofanov
Keyword(s):  
Reference Material ◽  
Reference Materials ◽  
Metrological Support ◽  
Plant Protection ◽  
National Standards ◽  
Plant Production ◽  
Industrial Complex ◽  
State Register ◽  
Analytical Work ◽  
Accredited Laboratories

The authors provided information about the developed matrix feed reference materials, certified for quality, nutritional value and toxicological contamination indicators for metrological support of analytical work in the article to confirm the compliance of products with requirements of national standards. Information on the stages of development of feed reference materials (selection and preparation of reference material, studies of heterogeneity and stability of feed reference material) is presented. There are demonstrated the results of reference materials certification according to certified indicators, their correctness confirmed by the results of thirty accredited laboratories.The developed reference material of sunflower meal is registered in the State Register of approved types of reference materials under the number GSO 11612-2020. Reference materials of the composition of toasted soybean feed meal and complete feed for poultry (broilers) are approved as Industry-Specific by the Ministry of Agriculture of the Russian Federation (Department of Plant Production, Mechanization, Chemicalization and Plant Protection).Feed reference materials are intended for metrological support of agro-industrial complex laboratories.

scholarly journals VALORISATION OF HYDROLYSIS LIGNIN REST FROM BIOETHANOL PILOT PLANT: PROCESS DEVELOPMENT AND UPSCALING

2020 ◽  
Vol 156 ◽  
pp. 112869 ◽  
Author(s):  
Ingemar Svensson ◽  
Tomás Roncal ◽  
Karel De Winter ◽  
Anoek Van Canneyt ◽  
Tarja Tamminen ◽  
...  
Keyword(s):  
Pilot Plant ◽  
Process Development ◽  
Hydrolysis Lignin ◽  
Pilot Plant Process ◽  
Plant Process

scholarly journals Available Technologies and Materials for Waste Cooking Oil Recycling

Processes ◽  
2020 ◽  
Vol 8 (3) ◽  
pp. 366 ◽  
Author(s):  
Alberto Mannu ◽  
Sebastiano Garroni ◽  
Jesus Ibanez Porras ◽  
Andrea Mele
Keyword(s):  
Chemical Engineering ◽  
Raw Materials ◽  
Building Blocks ◽  
Waste Cooking Oil ◽  
Added Value ◽  
Special Focus ◽  
Chemical Transformations ◽  
Oil Processing ◽  
Physical Treatments ◽  
Cooking Oils

Recently, the interest in converting waste cooking oils (WCOs) to raw materials has grown exponentially. The driving force of such a trend is mainly represented by the increasing number of WCO applications, combined with the definition, in many countries, of new regulations on waste management. From an industrial perspective, the simple chemical composition of WCOs make them suitable as valuable chemical building blocks, in fuel, materials, and lubricant productions. The sustainability of such applications is sprightly related to proper recycling procedures. In this context, the development of new recycling processes, as well as the optimization of the existing ones, represents a priority for applied chemistry, chemical engineering, and material science. With the aim of providing useful updates to the scientific community involved in vegetable oil processing, the current available technologies for WCO recycling are herein reported, described, and discussed. In detail, two main types of WCO treatments will be considered: chemical transformations, to exploit the chemical functional groups present in the waste for the synthesis of added value products, and physical treatments as extraction, filtration, and distillation procedures. The first part, regarding chemical synthesis, will be connected mostly to the production of fuels. The second part, concerning physical treatments, will focus on bio-lubricant production. Moreover, during the description of filtering procedures, a special focus will be given to the development and applicability of new materials and technologies for WCO treatments.

scholarly journals Experimental Determinations of Mixing Times in the IronArc Pilot Plant Process

Metals ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 101
Author(s):  
Kristofer Bölke ◽  
Mikael Ersson ◽  
Nils Andersson ◽  
Matej Imris ◽  
Pär Jönsson
Keyword(s):  
Pilot Plant ◽  
Mixing Time ◽  
Optical Microscope ◽  
Iron Production ◽  
Pig Iron ◽  
Mixing Times ◽  
Pilot Plant Process ◽  
Light Optical Microscope ◽  
Plant Process

IronArc is a newly developed technology and an emerging future process for pig iron production. The long-term goal with this technology is to reduce the CO2 emissions and energy consumption compared to existing technologies. The production rate of this process is dependent on the stirring, which was investigated in the pilot plant process by measuring the mixing time in the slag bath. Moreover, slag investigations were done both based on light optical microscope studies as well as by Thermo-Calc calculations in order to determine the phases of the slag during operation. This was done because the viscosity (which is another important parameter) is dependent on the liquid and solid fractions of the slag. The overall results show that it was possible to determine the mixing time by means of the addition of a tracer (MnO2 powder) to the slag. The mixing time for the trials showed that the slag was homogenized after seconds. For two of the trials, homogenization had already been reached in the second sample after tracer addition, which means ≤8 s. The phase analysis from the slag indicated that the slag is in a liquid state during the operation of the process.

scholarly journals Effects of various chemical cleaning conditions for pressured MF process

2016 ◽  
Vol 75 (5) ◽  
pp. 1063-1070
Author(s):  
Chang-Kyu Lee ◽  
Chansoo Park ◽  
June-Seok Choi ◽  
Jong-Oh Kim
Keyword(s):  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Pilot Scale ◽  
Second Step ◽  
Fiber Membrane ◽  
Bag Filter ◽  
Chemical Cleaning ◽  
Pilot Plant Process ◽  
The Impact ◽  
Plant Process

A pilot-scale pressured hollow-fiber microfiltration (MF) process as pretreatment for the reverse osmosis process was studied and operated under various conditions to assess the relative influence of backwashing, chemical enhanced backwashing (CEB), and bag filter application. The pilot plant process consisted of backwashing but without the CEB or the bag filter as the first step of the research. As the second step of the research, the impact of the backwashing on permeability recovery was assessed at different intervals followed by the influence of CEB on flowrate recovery. Results from operating the pilot-scale hollow-fiber membrane modules for more than 1 year have demonstrated that the appropriate pore size of bag filters was 25–50 μm and the optimized backwashing process was every 30 minutes with 25 mg/L of NaOCl, and CEB with an interval of 10 cycles with the use of 100 mg/L NaOCl.

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