Adsorbents Made of Inorganic Industrial Waste

2021 ◽  
Vol 25 (12) ◽  
pp. 15-23
Author(s):  
V.V. Samonin ◽  
E.A. Spiridonova ◽  
A.S. Zotov ◽  
M.L. Podvyaznikov ◽  
A.V. Garabajiu
Keyword(s):  
Industrial Waste ◽  
Raw Materials ◽  
Combustion Products ◽  
Raw Material ◽  
Production Methods ◽  
Metal Finishing ◽  
Ferrous Metals ◽  
Solid Fuel Combustion ◽  
Inorganic Waste ◽  
Parameters Of Porous Structure

Data demonstrate the possibility of manufacturing adsorbents by using inorganic industrial waste and provide raw material list for this purpose. Inorganic waste coming from water treatment, mining and construction industries, solid fuel combustion products, spent inorganic sorbents, catalysts and chemical absorbers, chemical, metallurgical and metal finishing industries waste are used as raw materials. Adsorbents production methods by using inorganic industrial waste have been analysed, and parameters of porous structure and adsorbents sorption activity in terms of organic compounds and cations of non-ferrous metals resulting from aqueous medium are listed.

scholarly journals Assessing possibility of technogenic raw material processing using ultra-low concentrations of sodium cyanide

2020 ◽  
Vol 24 (5) ◽  
pp. 1105-1112
Author(s):  
Anastasia Vasilkova ◽  
◽  
Alexander Byvaltsev ◽  
Olga Khmelnitskaya ◽  
Grigory Voiloshnikov ◽  
...  
Keyword(s):  
Raw Materials ◽  
Sodium Cyanide ◽  
Gold Recovery ◽  
Raw Material ◽  
Ferrous Metals ◽  
Low Concentrations ◽  
Reagent Consumption ◽  
Copper Zinc ◽  
Non Ferrous Metals ◽  
Technogenic Raw Materials

The purpose of the study is to conduct experiments in order to determine the possibility of technogenic gold-bearing raw material cyanidation using ultra-low concentrations of NaCN. Experiments are carried out on the cyanidation of three samples of technogenic raw materials of different composition. The first sample consists of pyrite cinders (Au - 1.8-2.3 g/t, Ag - 13-22 g/t, Fe - 48.52%, Cu - 0.15-0.30%, Zn - 0.3-0.6%). The second sample is represented by the aged tailings of copper-zinc flotation (sample I) with the content of Au - 0.8 g/t, Ag - 7.0 g/t, Fe - 17.2%, Cu - 0.212%, Zn - 0.207%. The next object is the copper-zinc flotation tailings of a concentration plant (sample II), with the following content of Au - 1.22 g/t, Ag - 15.2 g/t, Cu - 0.13%, Zn - 0.23%. It is recommended to use an aqueous wash from non-ferrous metals with subsequent lime treatment as a preliminary processing of pyrite cinders. Cyanidation is carried out at different consumptions of reagent: from 0.075 to 3 kg/t. The experiments have shown that gold recovery in this range of NaCN consumption varies from 42.9 to 44.2%; moreover, a decrease in the reagent consumption allows to reduce the concentration of non-ferrous metal ions in cyanidation solutions. Before cyanidation sample I has also been subjected to aqueous wash to remove acid and non-ferrous metals. NaCN consumption varies from 0.25 to 2.2 kg/t. In this case the extraction of gold amounts to 36.6-46.4%. Cyanidation of tailings (sample II) is carried out in the range of 0.15-1.2 kg/t of NaCN. Gold recovery varies from 24.1 to 30.9%. The cyanidation technology of technogenic raw materials in the field of ultra-low concentrations of sodium cyanide is promising, since it provides acceptable gold recovery under low reagent consumption. For further research in the field of development of an extraction technology of valuable components, the flotation tailings of copper-zinc production (sample II) are chosen as a promising object. It is planned to carry out semi-industrial tests, calculate technical and economic indicators and develop process regulations.

scholarly journals Briquettes Production as an Alternative Fuel

2021 ◽  
Vol 20 (4) ◽  
Author(s):  
U.S.P.R. Arachchige
Keyword(s):  
Industrial Waste ◽  
Crop Residue ◽  
Raw Materials ◽  
Raw Material ◽  
Alternative Methods ◽  
Agricultural Crop ◽  
Waste Generation ◽  
Binding Agent ◽  
Binding Agents ◽  
Waste Sewage Sludge

Bioenergy, which originated from agricultural crop residue and industrial waste, has been studied for sustainable energy generation. As a raw material for briquettes production, agricultural-crop residue, industrial waste, sewage, sludge, or other plants can be used. Briquettes have numerous advantages as they directly help to reduce waste generation and handling. The possibilities of the briquetting, qualities, and other essential factors for briquette production have been discussed. The alternative methods of Briquetting have been addressed with the comparison. The characteristics of the raw materials for briquettes production have been discussed to identify the best agricultural crop residue for briquettes. The properties of binding agents for the briquetting process have been discussed to identify the most practically available binding agent.

scholarly journals ECO-BALANCE FEATURES AND SIGNIFICANCE OF HEMIHYDRATE PHOSPHOGYPSUM REPROCESSING INTO GYPSUM BINDING MATERIALS

2009 ◽  
Vol 15 (2) ◽  
pp. 205-213 ◽  
Author(s):  
Sergejus Gaidučis ◽  
Romualdas Mačiulaitis ◽  
Antanas Kaminskas
Keyword(s):  
Raw Materials ◽  
Point Of View ◽  
Raw Material ◽  
Pollutant Emissions ◽  
Energy Expenditures ◽  
Technological Production ◽  
Energy Needs ◽  
Energy Consuming ◽  
Inorganic Waste ◽  
Pollution Emissions

The classification and grouping of materials investigation according to raw material's nature and product purpose (use) was conducted by using comparative material energetic usefulness and its production ecobalance analytical methods. Energy expenditures and pollution emissions into the environment were studied and compared to analogical purpose materials. One of the most economically perspective technogenic waste ‐ extractive hemihydrate phosphogypsum was investigated. Two technological production streams of phosphogypsum were studied. It was found, that the energy needs for production of analogical purpose materials (wall partitions) differ significantly. The nature of raw materials has an influence on energetic usefulness. The most effective materials according to their nature, energetic usefulness and environmental protection are mineral ones, especially if they are made with technogenic inorganic waste materials. The best results, from the energetic and ecological point of view, are obtained by using the waste raw material ‐ extractive hemihydrate phosphogypsum. Its reprocessing energy expenditures and pollutant emissions into the environment are several times less, than for other analogical purpose and properties wall materials, also with less environmental pollution. Products made from reprocessing extractive hemihydrate phosphogypsum can replace other energy consuming articles for wall partitions. Santrauka Klasifikuojant ir grupuojant medžiagas pagal žaliavų kilmę ir gaminių paskirtį atlikti lyginamieji medžiagų energinio naudingumo ir jų gamybos ekobalanso analitiniai tyrimai. Nagrinėtos ir lygintos energijos sąnaudos ir teršalų patekimas į aplinką analogiškos paskirties medžiagoms gauti. Tirtos vienos iš perspektyviausių ekonomoniu ir ekologiniu požiūriu technogeninės atliekos – ekstrakcinio pushidračio fosfogipso (E-PG) savybės. Nustatyta, kad energijos poreikis gaminant analogiškos paskirties medžiagas iš esmės skiriasi. Žaliavos kilmė turi įtaką produkcijos energiniam naudingumui. Efektyviausios pagal kilmę energinio naudingumo ir aplinkosaugos požiūriu yra mineralinės medžiagos, ypač jeigu jos pagamintos iš technogeninių neorganinių atliekų. Geriausi rezultatai energiniu ir ekologiniu požiūriu gauti naudojant atliekų žaliavą – E-PG. Jo perdirbimo energijos sąnaudos ir teršalų emisija į aplinką yra kelis kartus mažesnės, negu gaminant kitas analogiškos paskirties ir savybių sienines medžiagas, be to, mažėja aplinkos tarša. Ateityje gaminiai iš perdirbto E-PG galėtų pakeisti pastatų atitvaroms naudojamus keraminius, silikatinius ir kitus energijai imlius dirbinius.

The Development of Composite Building Product and its Fire Technical Characteristics

2014 ◽  
Vol 1001 ◽  
pp. 368-372
Author(s):  
Miroslava Netopilová ◽  
Jan Mikulenka ◽  
Anna Benešová
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Industrial Waste ◽  
Raw Materials ◽  
Raw Material ◽  
Waste Materials ◽  
Building Industry ◽  
Building Product ◽  
Material Resources ◽  
Renewable Raw Material

The article focuses on the research and development of a new composite material applicable in building industry, renewable raw material resources and industrial waste materials. The aim of the research is not only the application of concrete secondary raw materials but also the gaining of required safety aspects of these composite materials, i.e. certain fire technical characteristics.

scholarly journals Circular Economy Strategies: Use of Corn Waste to Develop Biomaterials

2021 ◽  
Vol 13 (15) ◽  
pp. 8356
Author(s):  
Hernán Darío Castaño Castrillón ◽  
Carlos Mario Gutiérrez Aguilar ◽  
Beatriz Elena Angel Álvarez
Keyword(s):  
Circular Economy ◽  
Fast Food ◽  
Industrial Waste ◽  
Food Packaging ◽  
Raw Materials ◽  
Raw Material ◽  
Practical Case ◽  
Material Base ◽  
Environmental Component ◽  
Efficient Manufacturing

The circular economy is a process through which elements that have already been used are reincorporated and given a second use so that they can reduce the consumption of virgin raw materials. This article shows how, from the reuse of an agro-industrial waste such as corn husks, a biomaterial can be developed that manages to standardize the properties of materials such as paper and cardboard, thus allowing the development of single-use products that replace the excessive expense of materials such as polymers. In this article, it will be possible to show how from the process of transforming an agro-industrial waste into a raw material base, it is possible not only to reduce the number of raw materials discarded but also to redesign a product that not only contributes to the environmental component but also facilitates the processes of economic sustainability when generating products. As a practical case, a comparison is made between traditional fast-food packaging and how from these, a new packaging proposal can be generated, which starts from the principles of circular economy and complements sustainable design processes to make more efficient manufacturing of the mentioned product.

scholarly journals Construction of affordable housing using local building materials

2020 ◽  
pp. 154-165
Author(s):  
V. V. Tytok
Keyword(s):  
Affordable Housing ◽  
Industrial Waste ◽  
Building Materials ◽  
Raw Materials ◽  
Construction Materials ◽  
Climatic Conditions ◽  
Raw Material ◽  
Material Base ◽  
Long Distance ◽  
The Cost

Trends in housing development should be based on the geographical location and climatic conditions of the region, national characteristics and culture, natural resources, transport links, density and living standards. Construction significantly affects the socio-economic development of the region. In this regard, increasing the sustainability of the regional construction complex, which is based on the building materials industry and the construction industry is a relevant and promising area of research.Demand in the building materials market continues to stimulate increased interest in the development of new types of efficient and inexpensive building materials. Since construction is one of the most material-intensive sectors of the economy, which consumes a large number of construction materials and products, various measures are taken to reduce their cost.In this regard, recently in the construction seek to make greater use of local building materials. This allows you to unload transport from long-distance transportation and significantly reduces the cost of construction. However, the building materials industry cannot develop by focusing only on natural sources of raw materials, as the costs of their extraction and processing are constantly growing. The use of man-made waste provides production with a rich source of cheap and often already prepared raw materials, which reduces the cost of manufacturing building materials.One of the promising areas in the construction of affordable housing is the maximum use of building materials and products that can be obtained from local raw materials and industrial waste. As local building materials are offered: clay, sand, soil, straw, reeds, flax. The use of industrial waste solves both environmental, fuel and energy problems and expands the raw material base of building materials.

scholarly journals Specific utilization methods of high-melting wastes from the enterprises of chemistry and non-ferrous metallurgy

2018 ◽  
Vol 196 ◽  
pp. 04010
Author(s):  
Aleksey Khlystov ◽  
Vladimir Shirokov ◽  
Elena Vlasova
Keyword(s):  
Ferrous Metallurgy ◽  
Industrial Waste ◽  
Raw Materials ◽  
Industrial Wastes ◽  
Raw Material ◽  
Phosphate Binders ◽  
Material Base ◽  
High Melting ◽  
Heat Resistant ◽  
Technogenic Wastes

The article provides information on industrial waste generation at enterprises of the Samara region, suitable for use as raw materials components of such heat-resistant composites as solutions, concretes, gun mixes, coatings. The research indicates rational ways of some heat-resistant binders application for utilization of mineral high-melting and heat-resistant industrial wastes. It proves that the enrichment of certain types of industrial waste, i.e. bringing the chemical composition of their components to the required state, allowed to expand the raw material base for the synthesis of heat-resistant binders and concrete in general. The use of sludge waste in the processes of synthesizing liquid phosphate binders allowed to obtain such effective binders as aluminophosphates and aluminocalciumphosphates. The research proves that application of technogenic wastes of non-ferrous metallurgy enterprises allows to receive heat-resistant materials solutions, concretes, coatings, gun mixes which characteristics are similar to their industrial analogues.

Research of Properties of Modern Construction Materials Based on Industrial Waste, Waste Wood and Metallurgical Industries

2019 ◽  
Vol 802 ◽  
pp. 113-124
Author(s):  
Ruslan Aharonovich Abramov ◽  
Maksim Sergeevich Sokolov ◽  
Svetlana Vyacheslavovna Derevianko
Keyword(s):  
Industrial Waste ◽  
Building Materials ◽  
Raw Materials ◽  
Construction Materials ◽  
Raw Material ◽  
Total Output ◽  
Material Consumption ◽  
Waste Wood ◽  
New Construction ◽  
Materials Used

Material consumption of production of building materials is determined by the amount of raw materials used for their production, to the total output. One of the ways to reduce material consumption is the use of industrial waste as the main raw material for the production of new construction products. Most of the waste generated as a result of the activities of enterprises are man-made raw materials for the production of products such as brick, lime, cement, etc.Given that man-made raw materials are similar to the natural composition and physical properties and even has a number of advantages (heat treatment, increased dispersion, etc.), the manufacture of building materials from it is usually profitable and justified [4, 5].

Dynamics of Biogas Fermentation for Industrial Waste and Hydrolysate of Corn Stover

2012 ◽  
Vol 531 ◽  
pp. 268-271
Author(s):  
Xin Jiong Guo ◽  
Ping Wang ◽  
Hua Ya Chen ◽  
Jing Pan ◽  
Ying Long He ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Corn Stover ◽  
Industrial Waste ◽  
Raw Materials ◽  
Raw Material ◽  
Methane Fermentation ◽  
Waste Liquor ◽  
Biogas Yield ◽  
High Level ◽  
Acid Waste

In order to fully utilize industrial waste and corn stover, the experiments were conducted using gulonic acid waste liquor and hydrolysate of corn stover as the methane fermentation raw materials. Real time CH4 and CO2 monitors were used to analyze the anaerobic digestion process. Different temperatures, nutrition and the rates of raw material supply were adopted to investigate the optimal methane fermentation condition. Experiment results showed that both gulonic acid waste liquor and hydrolysate of corn stover were easy to produce methane with as high as 800mL biogas per gram COD biogas yield and 77% methane content under an optimum condition. The potential inhibitor, Sulfate, in the hydrolysate corn stover showed no obvious inhibition at 0.3% level. The investigation also showed that high level of substrate would cause acid production and pH diminishing and finally result in CO2 increase and CH4 decrease. These phenomena indicate that methane production bacteria are the weak portion of the anaerobic digestion system.

scholarly journals PREPARING SOLUTIONS BASED ON INDUSTRIAL WASTE FOR FRACTURED SURFACE STRENGTHENING

2020 ◽  
Vol 5 (443) ◽  
pp. 13-20
Author(s):  
Aitkazinova Sh.A., ◽  
◽  
Bek А.А., ◽  
Derbisov K.T., ◽  
Donenbayeva N.S., ◽  
...  
Keyword(s):  
Fractured Rocks ◽  
Industrial Waste ◽  
Building Materials ◽  
Underground Mining ◽  
Raw Materials ◽  
Raw Material ◽  
Practical Significance ◽  
Material Base ◽  
Industrial Processing ◽  
Technogenic Raw Materials

Results of longstanding researches of Satbayev University scientists on the development of modified building materials to strengthen cracked mountain structures based on industrial waste are considered. Industrial processing of technogenic raw materials (enrichment and processing waste, overburden and enclosing rocks), which is similar in composition to natural and used in conventional trend, scarcely different from industrial processing of mineral raw materials. Creation of effective technologies for the processing of technogenic raw materials is an urgent task, which make it possible to obtain competitive products from it for various industries. Various methods of preparing solutions for strengthening of fractured rocks and building structures are analyzed. Research results of tailings of the Balkhash Mining and Metallurgical Combine and preparing solutions for strengthening fractured rocks and underground mining structures are presented. Rock mass strengthening in cracked areas is achieved by adding substances into the cracks, which after hardening and solidification with rocks, increase its shearing resistance characteristics. The most widespread hardening methods were cementation during mine workings (underground structures) in fractured rocks. Significance of obtained results for construction industry is in expansion and reproduction of raw material base of building materials industry through the use of Mining and metallurgical complex waste (tailings) and development of resource-saving technologies. Practical significance of work is in the detailed development of modified method for the production of building materials and products.

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