scholarly journals THE PROBLEM WITH TAILING DUMPS OF TYRNYAUZ TUNGSTEN-MOLYBDENUM MINING AND PROCESSING COMPLEX AND THEIR POTENTIAL EFFECT ON BIO- AND GEOCHEMICAL CONDITION OF WATER AND SOILS IN ELBRUS REGION

2021 ◽  
Author(s):  
М. Н. Кокоев
Keyword(s):  
Electric Power ◽  
Building Materials ◽  
Fine Particles ◽  
Potential Effect ◽  
Waste Recycling ◽  
Economic Conditions ◽  
Processing Waste ◽  
Waste Dumps ◽  
State Of Water ◽  
Geochemical Condition

Рассмотрен вопрос об утилизации отходов обогащения руд вольфрама и молибдена Тырныаузского вольфрамомолибденого комбината, которые складируются в двух "хвостохранилищах" объемом 120 млн. м3. По оценке автора, в отходах обогащения аккумулировано 7,2 млрд. кВт·ч электроэнергии, затраченной в прежние годы на измельчение руды. Если эти отходы использовать для производства строительных материалов можно сэкономить огромное количество электроэнергии. Ожидание подходящих экономических условий для переработки отходов связано с уносом высокодисперсных частиц ветром и водой из "хвостохранилищ". Это приводит к негативным изменениям в сложившиеся тысячи лет назад био- геохимическое состояние воды и почвы в долине реки Баксан. The issue of recycling tungsten and molybdenum ores from TTMM, which are stored in two waste dumps with a volume of 120 million m3, is discussed. According to the author, 7,2 billion kWh of electric power spent in previous years on ore grinding was accumulated in the processing waste. If that waste is used for the production of building materials, huge amounts of energy can be saved. Waiting for suitable economic conditions for waste recycling results in the dissemination of fine particles by wind and water from the dumps. This leads to negative changes in the biogeochemical state of water and soil in the Baksan river valley, which developed thousands of years ago.

Study of the Effect of PP and LDPE Thermoplastic Binder Addition on the Mechanical Properties and Physical Properties of Particulate Composites for Building Material Application

2019 ◽  
Vol 964 ◽  
pp. 115-123
Author(s):  
Sigit Tri Wicaksono ◽  
Hosta Ardhyananta ◽  
Amaliya Rasyida ◽  
Feisha Fadila Rifki
Keyword(s):  
Mechanical Properties ◽  
Compression Strength ◽  
Building Materials ◽  
Construction Material ◽  
Construction Materials ◽  
Physical And Mechanical Properties ◽  
Waste Recycling ◽  
Plastic Waste ◽  
Particulate Composites ◽  
Water Absorbability

Plastic waste is majority an organic material that cannot easily decomposed by bacteria, so it needs to be recycled. One of the utilization of plastic waste recycling is become a mixture in the manufacture of building materials such as concrete, paving block, tiles, roof. This experiment purpose to find out the effect of addition of variation of LDPE and PP thermoplastic binder to physical and mechanical properties of LDPE/PP/Sand composite for construction material application. In this experiment are using many tests, such are SEM, FTIR, compression strength, density, water absorbability, and hardness. the result after the test are the best composition of composite PP/LDPE/sand is 70/0/30 because its have compression strength 14,2 MPa, while density value was 1.30 g/cm3, for the water absorbability is 0.073%, and for the highest hardness is 62.3 hardness of shore D. From the results obtained, composite material can be classified into construction materials for mortar application S type with average compression strength is 12.4 MPa.

The Application of Industrial Waste in Landscaping

2013 ◽  
Vol 361-363 ◽  
pp. 740-746
Author(s):  
Yi Jie Liu ◽  
Shu Zhang
Keyword(s):  
Solid Waste ◽  
Industrial Waste ◽  
Building Materials ◽  
Waste Recycling ◽  
Environment Protection ◽  
Project Cost ◽  
Landscape Architect ◽  
Main Emphasis ◽  
Modern Landscape

This thesis put the main emphasis on how to utilize the solid waste, that is the offscum, to apply into landscaping after reprocessing. This thesis starts form discussing the building materials in landscaping and the specialness of construction, then tries to analyze the structure of every element in landscape construction, tries to select the industrial waste that can be applied into landscape construction from numerous industrial waste recycling products, and give a brief introduction of its mechanism and method. Besides, this thesis calls on modern landscape architect to actively utilize the waste to construct landscape, for not only lower project cost, but also more environment protection. Keywords: industrial waste; landscape; utilize, environment

scholarly journals Revised Finnish classification of indoor climate 2018

2019 ◽  
Vol 111 ◽  
pp. 02017 ◽  
Author(s):  
Mervi Ahola ◽  
Jorma Säteri ◽  
Laura Sariola
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Indoor Environment ◽  
Building Materials ◽  
Fine Particles ◽  
Indoor Climate ◽  
Environmental Classification ◽  
Target Values

The Finnish Society of Indoor Air Quality and Climate (FiSIAQ) introduced a Classification of Indoor Climate, Construction Cleanliness, and Finishing Materials in 1995. The Classification of Indoor Climate has been revised to meet the new Decree on indoor air quality and ventilation, European standards and experience from users of the classification. The most significant change is that target values for concentration and the in/out ratio of fine particles have been added. Other adjustments have been made to ensure good indoor environment and energy efficiency, but with reasonable investments. The criteria for emissions from building material and furniture were also updated. The Building Information Foundation RTS sr has run the M1-labelling of building products since 1996. The voluntary approach has been proven to improve the IAQ in new buildings and to reduce emissions from building materials. The Classification of Indoor Environment 2018 is integrated part of the new RTS Environmental Classification system.

scholarly journals Radioactivity of Five Typical General Industrial Solid Wastes and its Influence in Solid Waste Recycling

Minerals ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 168 ◽  
Author(s):  
Zhihui Shen ◽  
Qin Zhang ◽  
Wei Cheng ◽  
Qianlin Chen
Keyword(s):  
Solid Waste ◽  
Building Materials ◽  
Absorbed Dose ◽  
Waste Recycling ◽  
Solid Wastes ◽  
Radium Equivalent Activity ◽  
Limit Values ◽  
Industrial Solid Waste ◽  
Electrolytic Manganese ◽  
Electrolytic Manganese Residue

The level of radionuclides is an important index for the preparation of building materials from industrial solid waste. In order to investigate the radiological hazard of five kinds of typical general industrial solid wastes in Guizhou, China, including fly ash (FA), red mud (RM), phosphorus slag (PS), phosphogypsum (PG), and electrolytic manganese residue (EMR), the radiation intensity and associated radiological impact were studied. The results show that concentrations of 238U, 235U, 232Th, 226Ra, 210Pb, and 40K for different samples vary widely. The concentration of 238U was both positively correlated with 235U and 226Ra, and the uranium contents in the measured samples were all of natural origin. The radiation levels of PG, EMR, EMR-Na (EMR activated by NaOH), and EMR-Ca (EMR activated by Ca(OH)2) were all lower than the Chinese and the world’s recommended highest levels for materials allowed to be directly used as building materials. The values of the internal and external illumination index (IRa and Iγ, respectively) for FA and RM were higher (IRa > 1.0 and Iγ > 1.3 for FA, IRa > 2.0 and Iγ > 2.0 for RM). The radium equivalent activity (Raeq), indoor and outdoor absorbed dose (Din and Dout, respectively), and corresponding annual effective dose rate (Ein and Eout) of RM, PS, and FA were higher than the recommended limit values (i.e., 370 Bq/kg, 84 nGy/h, 59 nGy/h, 0.4 mSv/y, and 0.07 mSv/y, respectively), resulting from the higher relative contribution of 226Ra and 232Th. The portion of RM, FA, and PS in building materials should be less than 75.44%, 29.72%, and 66.01%, respectively. This study provides quantitative analysis for the safe utilization of FA, RM, PS, PG, and EMR in Guizhou building materials.

scholarly journals The electronic structure of the atom as a classification criterion of mineral technogenic waste

2021 ◽  
Vol 2131 (4) ◽  
pp. 042095
Author(s):  
A Sakharova ◽  
L Maslennikova
Keyword(s):  
Electronic Structure ◽  
Building Materials ◽  
Energy Gap ◽  
Chemical Elements ◽  
Raw Materials ◽  
Waste Recycling ◽  
Model Systems ◽  
Technogenic Waste ◽  
The Impact ◽  
Gap Width

Abstract Today, the total scientific classification of solid industrial waste is absent because of their diversity. The task of universal of mineral technogenic waste recycling is complicated by the difference in their composition. The nature of the chemical elements that make up building materials is always taken into account to predict their properties. In this regard, the purpose of the study was to determine the classification characteristics of mineral technogenic waste recycling on the basis of natural-scientific ideas about the electronic structure of the atom. Studies were conducted on model systems with ceramic oxides entering s-, p-, d- elements in ceramic matrix to test the impact of the electronic structure of the mineral waste cation on operational characteristics of building materials. The experimental results showed that the strength of the samples changes in the series s → p → d of the belonging of the introduced oxide cation to the electronic family. Additionally, such an indicator as the energy-gap width was used to study the nature of the contacting solid phases. It is possible to identify which substances in technogenic raw materials have the greatest effect on the performance of the material in value of the energy-gap width.

scholarly journals Community Empowerment Through PKW Handicraft Recycling of Waste Becomes A Souvenir in Kampung KB Bangau Putih

2020 ◽  
Vol 8 (4) ◽  
pp. 468
Author(s):  
Debbi Eka Putri ◽  
Wirdatul Aini
Keyword(s):  
Waste Recycling ◽  
Community Empowerment ◽  
Research Approach ◽  
Processing Waste ◽  
Research Subjects ◽  
Mental Attitude ◽  
Family Economy ◽  
Analysis Technique ◽  
Data Validity

This research is motivated by the success of the community in the KB village in making recycled waste handicrafts into souvenirs so that these handicrafts can support the family economy and improve the community's economy. The success of this activity is the ability of the instructor and manager of PKBM Farilla Ilmi in empowering the community. In this activity, the residents of KB village can to get the proceeds from the sale of waste recycling crafts of approximately Rp. 500,000 a month. This study aims to describe community empowerment through PKW crafts to recycle waste into souvenirs seen from the aspects of knowledge, aspects of skills, and aspects of mental attitudes. The research approach is qualitative, with the type of research is a case study. Sources of data in this study consisted of mothers from the KB Bangau Putih village as research subjects and instructors and managers as research informants. The data collection techniques used were interviews, observation, and documentation. The data analysis technique used was data reduction, data presentation, and concluding. The data validity technique used source triangulation. The results of this study indicate that community empowerment through PKW crafts for recycling waste into souvenirs is very good, this can be seen from: (1) Aspects of knowledge obtained from the results that community empowerment through PKW recycled crafts into souvenirs can be seen increasing public knowledge about processing waste into useful items. (2) In the aspect of skills, the results show that community empowerment through PKW crafts to recycle waste into souvenirs shows that people's skills in processing waste have increased. (3) the mental attitude aspect obtained from community empowerment through PKW handicraft recycling of waste into souvenirs can be seen from forming a mental attitude of people who care and are confident about what they do.Keywords: Empowerment, Waste Recycling Crafts, Kampung KB Bangau Putih

scholarly journals The technology of producing sorbents from linseed flax shive

2019 ◽  
Vol 20 (5) ◽  
pp. 517-525
Author(s):  
E. M. Puchkov ◽  
A. V. Galkin ◽  
I. V. Ushchapovsky
Keyword(s):  
Heavy Metals ◽  
Sorption Capacity ◽  
Raw Materials ◽  
Waste Recycling ◽  
Processing Waste ◽  
Bast Fiber ◽  
Federal Research ◽  
Rostov Region ◽  
Udmurt Republic ◽  
Disposal Problem

Flax processing waste, flax shive is of great importance for producing sorbents from non-wooden materials in Russia. There are more than 700 thousand hectares of linseed flax crops in the country. Linseed flax shive had been burned everywhere until recently as there was no technology of its processing. The waste disposal problem in the linseed flax cultivation regions could be solved by introducing new flax waste recycling and linen producing technologies developed by scientists of the Federal Research Center for Bast Fiber Crops. In 2015-2018 some studies were carried out in research laboratories and on the experi-mental plant of the center as well as on flax-sowing farms of the Udmurt Republic, Rostov region and Krasnodar territory. The research has shown that linseed shive contains 49-51% of cellulose and 23-27% of lignin, on which the sorption capacity of the material depends. The values of flax waste sorbent sorption capacity by the effective sorption of ions in relation to heavy metals are 85-91 %, to oil products - from 3.9 to 17.3 mg/g, to iodine and methylene blue - 222 and 220 mg/g, respectively. These values don’t concede the sorbents from wood and can replace the use of the latter. The developed technology of obtaining sorbent from flax allows to organize the production directly on flax-sowing farms and flax factories applying raw materials ready to use.

scholarly journals Utilization of Pet Wastes Aggregate in Building Construction - A Review

2020 ◽  
Vol 9 (3) ◽  
pp. 656-663
Keyword(s):  
Building Materials ◽  
Construction Materials ◽  
Chemical Properties ◽  
Waste Recycling ◽  
Building Construction ◽  
Recycled Pet ◽  
Pet Waste ◽  
Physical And Chemical ◽  
Plastic Containers ◽  
And Chemical Properties

The rapid increase of plastics waste produced worldwide today poses a danger to human health because of the pollution caused by the unsafe disposal and non-biodegradability of this waste combined with toxic gas emissions during incineration. Globally, PET (polyethylene terephalate) is commonly used for bottling water and other plastic containers. Recycling the waste would be an additional benefit. This study focuses some researchers on the forms, methods of recycling and various literature applications of PET wastes. Recycled PET can of course be used when combined with the sand aggregate to manufacture of various construction materials, such as tiles, bricks, paving stones etc. This research focuses on its application as it attracts substantial building materials such as the manufacture of various PET waste tiles and their unique mechanical , physical and chemical properties; There are some important studies discussed in relation to PET waste, recycling methods , and results from the study. Even various applications are described here. Its usefulness is further defined as roofing Composite concrete, floor tiling and other applications

scholarly journals Методика организации переработки отходов строительных материалов при ликвидации последствий чрезвычайных ситуаций техногенного характера

2020 ◽  
Vol 44 (3) ◽  
pp. 159-166
Author(s):  
Yu. Biryukov
Keyword(s):  
Building Materials ◽  
Waste Processing ◽  
Processing Waste ◽  
Recycled Materials ◽  
Secondary Use

Рассмотрена методика организации переработки отходов строительных материалов после демонтажа и сноса восстанавливаемых объектов при ликвидации последствий чрезвычайных ситуаций техногенного характера. Представлен алгоритм методики. Приведено моделирование требующихся затрат на возведение и эксплуатацию необходимой для этого инфраструктуры стационарных и мобильных комплексов переработки отходов (вместо захоронения) с целью обеспечения вторичного использования материалов на поврежденных объектах. Ключевые слова: чрезвычайная ситуация, демонтаж, переработка отходов, комплексы переработки, вторичные материалы, утилизация, восстановление объектов.The methodology of arrangement of processing waste building materials after dismantling and demolition of engineering facilities during liquidation of consequences of a technological emergency is considered herein. The algorithm of the technique is presented. Appropriate modeling of the required costs for construction and operation of the necessary infrastructure for stationary and mobile waste processing facilities (instead of disposal) in order to ensure secondary use of materials at damaged facilities is also given. Keywords: emergency, dismantling, waste processing, mobile processing complex, recycled materials, disposal.

scholarly journals Indoor Nanoparticle Characterization in Construction Waste Recycling Companies over Time

2021 ◽  
Vol 13 (24) ◽  
pp. 14071
Author(s):  
Diana Pinto ◽  
Alcindo Neckel ◽  
Guilherme L. Dotto ◽  
Bashir Adelodun
Keyword(s):  
Fine Particles ◽  
Morphological Changes ◽  
Construction Materials ◽  
Waste Recycling ◽  
Particulate Material ◽  
Future Research ◽  
Material Recycling ◽  
Four Seasons ◽  
Electron Microscopes ◽  
Ultra Fine Particles

Building activity is a significant source of atmospheric contamination by ultrafine dust. Cognizant of this fact, those active in the use and recycling of construction materials must be aware of the risks associated with exposure to nanoparticles (NPs) and ultra-fine particles (UFPs), as well as the associated health impacts. This work analyzed NPs and UFPs generated in a small building-material recycling company using high-resolution electron microscopes and X-ray Diffraction. A self-made passive sampler (LSPS) that can obtain particulate samples without physical and morphological changes, especially where there is a suspension of particulate material, was used in this study. A total of 96 particulate samples, using the LSPS for three months in four seasons, were collected during the study. Thus, the dry deposition of the particles, which are considered highly harmful to human health, was found in each of the four seasons of the year. It is suggested that for future research, the toxicological evaluations of the particulates in the construction industry should be investigated through the consideration of measures to control and mitigate the health risks of workers regarding exposure to NPs and UFPs.

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