scholarly journals Application of Waste Polymers as a Raw Material for Ultrafiltration Membrane Preparation

Proceedings ◽  
2019 ◽  
Vol 16 (1) ◽  
pp. 14 ◽  
Author(s):  
Michał Adamczak ◽  
Gabriela Kamińska ◽  
Jolanta Bohdziewicz
Keyword(s):  
Water Treatment ◽  
Surface Properties ◽  
Raw Materials ◽  
Polymer Membranes ◽  
Ultrafiltration Membrane ◽  
Raw Material ◽  
Membrane Preparation ◽  
Treatment Processes ◽  
Waste Polystyrene ◽  
Retention Testing

Currently, polymer membranes are widely used in water treatment processes. The polymers commonly used for their production are polysulphone, polyacrylonitrile, or polyethersulphone. However, there are many other raw materials from which membranes can be prepared. In this work, polystyrene membranes were obtained by dissolving Styrofoam in dimethyleformamide. The surface properties of the obtained membranes differed slightly from those obtained for polymer membranes prepared from typical granulates. Retention testing in ultrafiltration conditions showed that membranes made form waste polystyrene have similar parameters to membranes made from pure polymers.

scholarly journals Pengendalian Persediaan Bahan Baku Nalco Water Treatment Dengan Menggunakan Metode Lot Sizing

2019 ◽  
Vol 2 (2) ◽  
pp. 80
Author(s):  
Masad Hariyadi ◽  
Boy Isma Putra
Keyword(s):  
Water Treatment ◽  
Raw Materials ◽  
Unit Cost ◽  
Exponential Smoothing ◽  
Raw Material ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Order Quantity ◽  
Double Exponential ◽  
Double Exponential Smoothing

The limited supply of Nalco raw materials from producers has become a problem for PT ABC, this has led to the control of raw material inventory at PT ABC not including good management, because in the management of raw materials the company still records inventory with manual systems and in ordering raw materials only based on estimates. From the results of the study, the forecasting method used is the Double Exponential Smoothing Holt's, Brown, and Holt Winters Additive Algorithm methods, from the three methods that are most suitable is the Double Exponential Smoothing Brown method with the smallest Mean Square Error of 256.2. Calculation of Sizing Lot by using Economic Order Quantity method, Least Unit Cost method, and Silver Meal method, of the three methods the most optimal is the Economic Order Quantity method because it has the lowest cost of Rp. 12,651,145. The calculation of Safety Stock gets 17 Pail results. and for Reorder Points for Nalco Water Treatment raw material, which is 29 Pail.

scholarly journals Analisis dan Strategi Mitigasi Risiko Produksi Teh Botol Sosro di PT. Sinar Sosro Pabrik Bali

2020 ◽  
Vol 8 (2) ◽  
pp. 257
Author(s):  
Ni Made Dwi Astiti Sari ◽  
I Ketut Satriawan ◽  
Cokorda Anom Bayu Sadyasmara
Keyword(s):  
Risk Factors ◽  
Risk Factor ◽  
Water Treatment ◽  
Raw Materials ◽  
Risk Mitigation ◽  
Raw Material ◽  
Effect Analysis ◽  
Water Pumping ◽  
Periodic Maintenance ◽  
Fmea Method

This study aims to identify risks, analyze the level of risk priority, and formulate alternative strategies and determine priority risk factors to minimize the risk of Sosro Teh Botol production. This study uses two methods, the Failure Mode and Effect Analysis (FMEA) method used to assess and determine risk priorities, and the Analytical Hierarchy Process (AHP) method is used to determine priority risk factors. At PT Sinar Sosro Bali Factory there are 18 risks of Teh Botol Sosro production, which are divided into 5 risk factors, namely: raw materials, water treatment, kitchen, bottling, and finished products. Risk assessment and determination of risk priorities results in a number of risks that have the highest Risk Priority Number (RPN) for each risk factor, namely delays in raw materials for tea and sugar (14.1), damage to water pumping machines (15.8), sugar weighing errors by employees (19.5), broken bottles in the washing machine (18.7), and collisions between products during distribution (17.1). The mitigation strategy is chosen for the raw material risk factor to improve the raw material ordering schedule, the water treatment risk factor to carry out periodic maintenance of the pump engine, the kitchen risk factor to increase the control of the weighing operator, the risk factor for bottling to improve the setting of the bottle washer machine, and the risk factor for the finished product to increase control over the application of the distribution SOP. Keywords: Risk, risk mitigation, FMEA, Teh Botol Sosro

Advanced Treatment of Drinking Water by Ultrafiltration Membrane

2013 ◽  
Vol 647 ◽  
pp. 543-547 ◽  
Author(s):  
Yi Xin Yang ◽  
Jie Chen
Keyword(s):  
Molecular Weight ◽  
Drinking Water ◽  
Organic Matter ◽  
Water Treatment ◽  
Ultrafiltration Membrane ◽  
Advanced Treatment ◽  
Treatment Processes ◽  
Large Molecular Weight ◽  
Algae And Bacteria ◽  
Ultrafiltration Process

Advanced treatment of drinking water was performed by ultrafiltration process (UF) in this study. Experimental results showed that UF is a perfect physical sieving barrier to remove turbidity, algae and bacteria from water, which is far superior to conventional water treatment processes. But the ultrafiltration membrane is not very effective for the removal of dissolved organic matter because of the large molecular weight cut-off. And the backwashing per 30min can totally renew the ultrafiltration membrane.

Surface hydrophilisation and antibacterial functionalisation for microporous polypropylene membranes

2010 ◽  
Vol 61 (8) ◽  
pp. 2053-2060 ◽  
Author(s):  
Y. F. Yang ◽  
L. S. Wan ◽  
Z. K. Xu
Keyword(s):  
Surface Modification ◽  
Water Treatment ◽  
Protein Adsorption ◽  
Surface Properties ◽  
Biofilm Formation ◽  
Polymer Membranes ◽  
Separation Performances ◽  
Limited Surface ◽  
Biomedical Fields

The surface properties of polymer membranes are crucial to their separation performances. For the microporous polypropylene membranes, the high hydrophobicity and lack of functionality easily cause protein adsorption and subsequent microorganism attachment and biofilm formation, i.e. biofouling. Thus, their applications in water treatment, bioseparation and biomedical fields are largely limited. Surface hydrophilisation and antibacterial functionalisation are, therefore, reasonably necessary. This review provides a concise summarisation of related studies according to the surface modification strategies. Especially, the interfacial crosslinking approach developed in our previous studies is presented in detail.

RHEOLOGICAL PROPERTIES OF CERAMIC MASSES: IMPROVEMENT BY COMPLEX MATERIAL ACTIVATION

2019 ◽  
Vol 16 (3) ◽  
pp. 334-351
Author(s):  
A. S. Mavlyanov ◽  
E. K. Sardarbekova
Keyword(s):  
Rheological Properties ◽  
Raw Materials ◽  
Sensitivity Coefficient ◽  
Raw Material ◽  
Clay Material ◽  
Fibrous Materials ◽  
Chemical Production ◽  
Production Wastes ◽  
Pass Through ◽  
The Masses

Introduction. The objective of the research is to study the effect of the complex activation of the alumina raw material on the rheological properties of the ceramic mass. In addition, the authors investigate solutions for the application of optimal coagulation structures based on loams and ash together with plastic certificates.Materials and methods. The authors used the local forest like reserves of clay loams at the BashKarasu, ash fields of the Bishkek Central Heating Centre (BTEC) and plasticizer (sodium naphthenate obtained from alkaline chemical production wastes) as fibrous materials. Moreover, the authors defined technological properties of raw materials within standard laboratory methodology in accordance with current GOSTs.Results. The researchers tested plastic durability on variously prepared masses for the choice of optimal structures. The paper demonstrated the plastic durability of complexly activated compounds comparing with non-activated and mechanically activated compounds. The sensitivity coefficient increased the amount of clay loams by mechanically and complexly activated, which predetermined the possibility of intensifying the process of drying samples based on complexly activated masses.Discussion and conclusions. However, mechanical activation of clay material reduces the period of relaxation and increases the elasticity coefficient of ceramic masses by 1.8–3.4 times, meanwhile decreases elasticity, viscosity and the conventional power during molding, which generally worsens the molding properties of the masses. Сomplex activation of ash-clay material decreases the period of relaxation and provides an increase in elasticity, plasticity of ceramic masses by 46–47%, reduction in viscosity by 1.5–2 times, conventional power on molding by 37–122% in comparison with MA clay loams. Ceramic masses based on spacecraft alumina raw materials belong to the SMT with improved rheological properties; products based on them pass through the mouthpiece for 5–7 seconds.

ANALYSIS FOR POTENCY AND PRODUCTION OF GRANULE ORGANIC FERTILIZER BASED ON MANURE

2018 ◽  
Vol 7 (2) ◽  
Author(s):  
Firman L. Sahwan
Keyword(s):  
Organic Material ◽  
Organic Materials ◽  
Raw Materials ◽  
Organic Fertilizer ◽  
Raw Material ◽  
Cow Manure ◽  
Production Potential ◽  
Natural Organic Material ◽  
Very High

Organic materials that are generally used as raw material for organic fertilizer granules (POG) is a natural organic material that has been degrade, smooth and dry. One of the main raw materials are always used with a very high percentage of usage, is manure. Manure potential in Indonesia is very high, amounting to 113.6 million tons per year, or 64.7 million tons per year to the island of Java. From this amount, it will be generated numbers POG production potential of 17.5 million tons per year (total Indonesia) or 9.9 million tons per year for the island of Java. While the realistic POG production predictions figures made from raw manure is 2.5 million tons annually, a figure that has been unable to meet the number requirement of POG greater than 4 million tons per year. Therefore, in producing POG, it should be to maximize the using of the potential of other organic materials so that the use of manure can be saved. With the use of a small amount of manure (maximum 30% for cow manure), it would be useful also to avoid the production of POG with high Fe content.keywods: organic material, manure, granule organic fertilizer

Nutritional Value Research of Spelt Pasta with Vegetable Additives

Food Industry ◽  
2020 ◽  
Vol 5 (2) ◽  
pp. 61-70
Author(s):  
Oliya Fazullina ◽  
Stanislav Smirnov
Keyword(s):  
Dietary Fiber ◽  
Nutritional Value ◽  
Raw Materials ◽  
Health Indicators ◽  
Dietary Treatment ◽  
Raw Material ◽  
Whole Wheat ◽  
Healthy Nutrition ◽  
Physiologically Active Substances ◽  
Simple Carbohydrates

Health indicators of the population depend significantly on the food quality and nutritional value. Simple carbohydrates excess of and lack of protein, dietary fiber, vitamins, minerals, antioxidants and other physiologically active substances increase the risk of socially significant disease progress. The development and production of mass-consumed products with high nutritional and biological value, including affordable non-traditional raw materials use, are promising areas of the food industry development aimed at improving the nutritional status of the population. The article presents the research results on the developed Noodle products recipes from non-traditional raw materials that meet modern healthy nutrition requirements, intended for dietary treatment and dietary prevention of people with overweight / obesity. The research aimed at expanding the range of macaroni products with these characteristics. As the main raw material, a man selected whole-wheat flour – new spelt flour, and as additional raw materials – buckwheat flour, broccoli and celery powders. The researchers found that the introduction of macaroni products from buckwheat spelt, broccoli and celery powders into the recipe had a multidirectional effect, reducing or increasing various indicators of its nutritional value. The changes range did not affect the overall characteristics. The satisfaction degree of the average daily need for food substances and energy when consuming a portion of 100 g for each sample of developed Noodle products allows them to be classified as functional products that are protein and dietary fiber sources, according to the requirements of the TR CU 022/2011.

UNIDO, Industrial Processing of Natural Resources. New York: United Nations. 1981. viii + 78pp.US $ 5.00. [United Nations Publication Sales No. E. 81. 11 . B.1]

1982 ◽  
Vol 21 (4) ◽  
pp. 329-333
Author(s):  
Rashid Aziz
Keyword(s):  
New York ◽  
United Nations ◽  
Industrial Development ◽  
Raw Materials ◽  
Developed Countries ◽  
Raw Material ◽  
Industrial Processing ◽  
Depth Study ◽  
Manufactured Exports ◽  
Year 2000

The book under review is a concise but fairly in-depth study of the prospects for export diversification from the Less Developed Countries (henceforth labeled as LDCs) particularly to Developed Countries (henceforth labeled as OCs). Given the multiple problems faced by the LOCs in exporting to the OCs - protectionist policies with regards to manufactured exports, volatility of prices obtained for raw material exports, etc. - the study analyses the potential for following an intermediate route. The important issues in the export of semi -processed and wholly processed raw materials are discussed. 111ese issues range from the problems and potentials for the location of processing facilities in the LOCs to the formulation of appropriate policies to encourage an export of processed goods rather than raw materials. Such policies will be useful both in solving the balance of-payments problems of the LDCs and in attaining the goal of the Lima Declaration and Plan of Action on Industrial Development and Co-operation, that called for 2S percent of world industrial production to be located in the LOCs by the year 2000.

PENGARUH HARGA DAN PEMAKAIAN PERSEDIAAN BAHAN BAKU TERHADAP VOLUME PRODUKSI PADA PT. KELOLA MINA LAUT DI GRESIK

MANAJERIAL ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 66
Author(s):  
BAYU YRI WIDHARTO
Keyword(s):  
Linear Regression ◽  
Hypothesis Testing ◽  
Multiple Linear Regression ◽  
Raw Materials ◽  
T Test ◽  
Raw Material ◽  
Analysis Tool ◽  
Production Volume ◽  
F Test ◽  
Material Price

The purpose of the research was to know the affect of many factors which affected to the production volume in PT. Kelola Mina Laut Gresik. What the price of raw materials was and the used of raw materials partially and simultan eously affected on the production volume. The analysis tool which used was a model of multiple linear regression. Hypothesis testing used t test and F test, both at the significant level 5%. Based of the analysis of research on PT Kelola Mina Laut Gresik. Partially, inventory raw material price had not significant effect on the production volume, consumption of raw material inventory affected significantly of the production volume. Inventory of raw material price and the use of raw material simultan eously affect significantly to the production volume.

TECHNOLOGICAL ASPECTS OF HIGH QUALITY RAW MATERIAL OBTAINING FOR PECTIN PRODUCTION

1970 ◽  
pp. 47-50
Author(s):  
I. A. Ilina ◽  
I. A. Machneva ◽  
E. S. Bakun
Keyword(s):  
Raw Materials ◽  
Thermal Characteristics ◽  
Environmental Safety ◽  
Raw Material ◽  
High Quality ◽  
Temperature Conductivity ◽  
Drying Temperature ◽  
Plant Raw Materials ◽  
Gel Forming Ability

  The article is devoted to the study of the chemical composition, physical and thermal-pfysical characteristics of damp apple pomaces and the identifying patterns of influence of drying temperature the functional composition and gel-forming ability of pectin. The research is aimed at obtaining initial data for the subsequent calculation of the main technological, hydro-mechanical, thermal, structural and economic characteristics of devices for drying the plant raw materials, ensuring the environmental safety and high quality of pectin-containing raw materials, the reducing heat and energy costs. As a result of the study of the thermal characteristics of apple pomaces, the critical points (temperature conductivity – 16.5 x 10-8 m2/s, thermal conductivity – 0.28 W/m K, heat capacity – 1627 j/(kg K)) at a humidity of 56 % are determined, which characterizing the transition from the extraction of weakly bound moisture to the extraction of moisture with strong bonds (colloidal, adsorption). It was found that the pomaces obtained from apples of late ripening have a higher content of solids (21-23 %), soluble pectin and protopectin (2.5-4.5 %). Dried pomaces obtained from apple varieties of late ripening contain up to 25 % pectin, which allow us to recommend them as a source of raw materials for the production of pectin. The optimum modes of preliminary washing of raw materials are offered, allowing to the remove the ballast substances as much as possible. It is established that when the drying temperature increases, the destructive processes are catalyzed: the strength of the pectin jelly and the uronide component and the degree of pectin esterification are reduced. The optimum drying temperature of damp apple pomaces is 80 0C, at which the quality of pectin extracted from the dried raw materials is maintained as much as possible. It is shown that the most effective for the pectin production is a fraction with a particle size of 3-5 mm, which allow us to extract up to 71 % of pectin from raw materials.

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