scholarly journals Preparation and Properties of a Sulphoaluminate Magnesium-Potassium Phosphate Green Cementitious Composite Material from Industrial Solid Wastes

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7340
Author(s):  
Changzai Ren ◽  
Wenlong Wang ◽  
Dongliang Hua ◽  
Shuang Wu ◽  
Yonggang Yao
Keyword(s):  
Composite Material ◽  
Solid Waste ◽  
Calcination Temperature ◽  
Large Scale ◽  
Potassium Phosphate ◽  
Cementitious Material ◽  
Solid Wastes ◽  
Scanning Electron Micrographs ◽  
Cementitious Composite ◽  
Industrial Solid Waste

The preparation of high-performance green cementitious material from industrial solid waste is a feasible large-scale utilization approach for industrial solid waste. This work investigates the feasibility of using industrial solid wastes in a sulphoaluminate–magnesium–potassium–phosphate cementitious composite material (SAC-MKPC) clinker preparation and the influence of the calcination temperature and clinker ingredients on the hydration behavior and mechanisms of the SAC-MKPC with a Mg/P ratio of 5. The results show that the novel SAC-MKPC that was prepared from aluminum slag, carbide slag, coal gangue, and magnesium desulfurization slag was composed mainly of mineral MgO, C4A3S¯, and C2S and the calcination temperature of the main mineral phases was 1250–1350 °C. The solid-waste-based SAC-MKPC had better mechanical properties and excellent water resistance compared with the MKPC. The optimal compressive strength reached 35.2, 70.9, 84.1, 87.7, and 101.6 MPa at 2 h, 1 d, 3 d, 7 d, and 28 d of hydration, respectively. The X-ray diffraction spectra and scanning electron micrographs of the hydration products of the SAC-MKPC clinker showed that AFt and K-struvite crystals coexisted and adhered to form a dense structure. This work provides an innovative idea to produce green cementitious material using industrial solid wastes and may promote the sustainable development of the power and mining industries.

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 Shear Testing of the Interfacial Friction Between an HDPE Geomembrane and Solid Waste

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1672
Author(s):  
Luming Zhou ◽  
Zhende Zhu ◽  
Zhenpeng Yu ◽  
Cong Zhang
Keyword(s):  
Shear Stress ◽  
Shear Strength ◽  
Solid Waste ◽  
Rough Surface ◽  
Interfacial Shear Strength ◽  
Friction Angle ◽  
Interfacial Shear ◽  
Solid Wastes ◽  
Interfacial Friction ◽  
Industrial Solid Waste

High-density polyethylene (HDPE) geomembrane is often used as an anti-seepage material in domestic and industrial solid waste landfills. To study the interfacial shear strength between the HDPE anti-seepage geomembrane and various solid wastes, we performed direct shear tests on the contact interface between nine types of industrial solid waste or soil (desulfurization gypsum, fly ash, red mud, mercury slag, lead-zinc slag, manganese slag, silica fume, clay and sand) and a geomembrane with a smooth or rough surface in Guizhou Province, China. Friction strength parameters like the interfacial friction angle and the apparent cohesion between the HDPE geomembrane and various solid wastes were measured to analyze the shear strength of the interface between a geomembrane with either a smooth or a rough surface and various solid wastes. The interfacial shear stress between the HDPE geomembrane and the industrial solid waste increased with shear displacement and the slope of the stress-displacement curve decreased gradually. When shear displacement increased to a certain range, the shear stress at the interface remained unchanged. The interfacial shear strength between the geomembrane with a rough surface and the solid waste was higher than for the geomembrane with a smooth surface. Consequentially, the interfacial friction angle for the geomembrane with a rough surface was larger. The geomembrane with a rough surface had a better shear resistance and the shear characteristics fully developed when it was in full contact with the solid waste.

scholarly journals Composting – A Solution to the Industrial Solid Waste Management

2020 ◽  
pp. 82-89
Author(s):  
C. Malarvizhi ◽  
P. Doraisamy ◽  
M. Maheswari
Keyword(s):  
Organic Matter ◽  
Solid Waste ◽  
Solid Waste Management ◽  
Value Added ◽  
Solid Wastes ◽  
Cow Dung ◽  
Poultry Waste ◽  
Nutrient Contents ◽  
Industrial Solid Waste ◽  
Coir Pith

Environmental pollution is the major problems associated with rapid industrialization, urbanization and rise in living standards for people. Gelatin industry solid waste contains plant nutrients and organic matter, which could enhance the availability of nutrients, enrich the soil organic matter and ultimately increase the crop growth. Hence, the study was conducted to convert gelatin industry solid waste with nutrient-rich materials such as cow dung, poultry waste and coir pith with microbial cultures for the production of nutrient-rich value-added manure. Composting of GISW along with coir pith, cow dung and poultry waste recorded the desirable C/N ratio of 12.4:1 and highest nutrient contents (1.85, 3.85 and 1.24% of N, P and K, respectively). Also, the composted gelatin industry solid waste (CGISW) was subjected to various maturity tests and phytotoxicity assay.  The indiscriminate disposal and accumulation of solid wastes generated by gelatin manufacturing industries are the cause for concern. Hence an attempt has been made to convert these gelatin industry solid wastes (GISW) into bio-manure by blending with other organic wastes such as poultry waste, coir pith and cow dung with suitable microorganisms.

scholarly journals DIMINUTION OF HEAVY METALS IN INDUSTRIAL SOLID WASTE BY AN AMALGAMATION OF MYCO AND VERMI REMEDIATION

2017 ◽  
Vol 13 (11) ◽  
pp. 6018-6037
Author(s):  
Gowthami S ◽  
Thirumarimurugan M ◽  
Sivakumar V. M
Keyword(s):  
Heavy Metals ◽  
Solid Waste ◽  
Rapid Development ◽  
Consumer Products ◽  
Solid Wastes ◽  
Hazardous Substance ◽  
Industrial Solid Waste ◽  
Biological Remediation ◽  
Toxic Pollutant ◽  
By Products

Due to the development of Industrialization and urbanization, a wide variety of industrial and consumer products, by products and solid waste has been produced. The solid waste generated constitutes the hazardous substance which possesses certain impacts on humans and their environment. In that heavy metal pollution from industries are the serious environmental problems. Rapid development in industries in the last few decades resulted in the strenuous task for finding to manage the waste generated. These hazardous solid wastes have been formulated into reusable end product by the process of bioremediation. Bioremediation is a natural process, which involves the use of organism to remove or neutralize the toxic pollutant from the contamination site. This review focus on the toxic effects of heavy metals on the environment and on the human health as well as the possible bioremediation method of these metals using fungus and earthworm. In order to conserve the environment and resources, the biological remediation by both fungus and earthworm for heavy metals and their efficiency have been summarised in detail.

scholarly journals Influence of industrial solid waste addition on properties of soil-cement bricks

Cerâmica ◽  
2016 ◽  
Vol 62 (363) ◽  
pp. 237-241 ◽  
Author(s):  
F. B. Siqueira ◽  
M. C. Amaral ◽  
R. A. Bou-Issa ◽  
J. N. F. Holanda
Keyword(s):  
Solid Waste ◽  
Charge Material ◽  
Solid Wastes ◽  
Raw Material ◽  
Industrial Solid Waste ◽  
Welding Flux ◽  
Soil Cement ◽  
Technical Properties ◽  
Eggshell Waste ◽  
Slag Waste

Abstract The reuse of pollutant solid wastes produced in distinct industrial activities (avian eggshell waste and welding flux slag waste) as a source of alternative raw material for producing soil-cement bricks for civil construction was investigated. Soil-cement bricks containing up to 30 wt% of industrial solid waste were uniaxially pressed and cured for 28 days. Special emphasis is given on the influence of solid waste addition on the technical properties (as such volumetric shrinkage, water absorption, bulk density, durability, and compressive strength), microstructure and mineral phases of soil-cement bricks. Microstructural evolution was evaluated via confocal microscopy. The experimental results showed that the solid wastes behave as charge material and influenced both technical properties and microstructure of the soil-cement bricks. It was found that up to 15 wt% of welding flux slag waste and up to 30 wt% of avian eggshell waste could be added into the soil-cement bricks for use as building material.

scholarly journals SATUAN TIMBULAN DAN KOMPOSISI SAMPAH INDUSTRI KOTA PADANG

Jurnal Dampak ◽  
2013 ◽  
Vol 10 (1) ◽  
pp. 20
Author(s):  
Yenni Ruslinda
Keyword(s):  
Solid Waste ◽  
Industrial Waste ◽  
Large Scale ◽  
Solid Waste Management ◽  
Industrial Wastes ◽  
Small Scale ◽  
Waste Generation ◽  
Glass Waste ◽  
Industrial Solid Waste ◽  
Inorganic Waste

ABSTRAKDalam perencanaan dan pengembangan sistem pengelolaan sampah suatu kota, diperlukan data timbulan dan komposisi sampah dari berbagai sumber sampah. Penelitian ini bertujuan untuk menentukan timbulan dan komposisi sampah industri Kota Padang berdasarkan SNI 19-3964-1994. Dari penelitian diperoleh rata-rata sampah industri Kota Padang sebesar 5,057 kg/orang/hari (0,164 kg/m2/hari) dalam satuan berat atau 6,569 liter/orang/hari (0,441 liter/m2/hari) dalam satuan volume. Berdasarkan kategori industri (jumlah karyawan), timbulan sampah industri besar 9,606 liter/orang/hari, timbulan sampah industri sedang 5,644 liter/orang/hari, dan timbulan sampah industri kecil 4,457 liter/orang/hari. Produksi sampah mengalami pengurangan pada akhir minggu yaitu hari Jumat sampai hari Minggu karena waktu kerja lebih singkat dari hari biasanya. Komposisi sampah industri Kota Padang didominasi oleh sampah organik (79,31%) yang terdiri atas sampah makanan (9,90%), kertas (20,06%), plastik (18,86%), tekstil (8,69%), karet (1,62%), sampah halaman (0,54%), kayu (14,18%), dan kulit (5,47%), sedangkan sampah anorganik (20,69%) terdiri dari kaca (0,28%), kaleng (1,36%), logam (0,12%), dan lain-lain (serbuk gergaji, busa) sebesar 18,93%. Kajian awal pengolahan yang diusulkan untuk sampah industri berdasarkan data timbulan dan komposisi adalah daur ulang untuk sampah kertas dan plastik, dan reuse untuk sampah lain-lain (campuran tanah dan serbuk gergaji).Kata kunci: sampah industri, timbulan sampah, komposisi sampah ABSTRACTTo plan and develop a solid waste management system, some data are needed such as generation and composition of solid waste from several sources. The aim of this research was to determine the generated solid wastes and their composition from industrial wastes based on SNI 19-3964-1994. The researchs results shows that average waste generation for industrial solid waste in Padang city was 5,057 kg/person/day (0,164 kg/m2/day) in weight unit, or 6,569 liter/person/day (0,441 liter/m2/day) in volume unit. Based on industry category (number of employees), the generation of solid waste from large scale industries, medium scale industries, and small scale industries were 9,606 liter/person/day, 5,644 liter/person/day, and 4,457 liter/person/day consecutively. Waste productions were decreased at the end of the week (Friday to Sunday) due to shorter working time. The composition of the industrial solid waste was dominated by organic waste (79,31%) which consists of food waste 9,90%, paper waste 20,06%, plastics waste 18,86%, textiles waste 8,69%, rubber waste 1,62%, yard waste 0,54%, wood waste 14,18%, and leather waste 5,47%, while the 20,69% inorganic waste consists of glass waste 0,28%, tin 1,36%, metal 0,12%, and others (mixture of soil, sawdust) 18.93%. Preliminary assessment for the proposed processing industrial waste based on data of solid waste generation and composition were recycling for paper and plastic wastes, and reuse for other wastes (mixture of soil and sawdust).Keywords: industrial waste, waste generation, waste composition

CLEAN UTILIZATION OF MUNICIPAL SOLID WASTES AND ALTERNATIVE FUELS DERIVED FROM IT

2020 ◽  
Vol 5 (4) ◽  
pp. 202-209
Author(s):  
Alexander Topal ◽  
◽  
Iryna Holenko ◽  
Luidmyla Haponych ◽  
◽  
...  
Keyword(s):  
Thermal Treatment ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Alternative Fuels ◽  
Solid Wastes ◽  
Municipal Solid Wastes ◽  
Local Conditions ◽  
Ecological Requirements ◽  
Clean Technologies

For the municipal solid waste (MSW) to be used in a proper way, it is necessary to implement clean technologies capable of thermal treatment of MSW and RDF in order to produce heat and electricity while meeting current ecological requirements. Nowadays, a number of technologies for MSW/RDF thermal treating are being used worldwide. Among them, the most proven technologies, applicable for industrial introduction, have been considered while analyzing their advantages/ disadvantages accounting for local conditions of Ukraine.

Waste minimization program in Shuaiba Industrial Area

1999 ◽  
Vol 39 (10-11) ◽  
pp. 289-295
Author(s):  
Saleh Al-Muzaini
Keyword(s):  
Solid Waste ◽  
Power Plants ◽  
Large Scale ◽  
Industrial Area ◽  
Waste Minimization ◽  
Regulatory Body ◽  
Eastern Sector ◽  
Western Sector ◽  
Petroleum Companies ◽  
The Cost

The Shuaiba Industrial Area (SIA) is located about 50 km south of Kuwait City. It accommodates most of the large-scale industries in Kuwait. The total area of the SIA (both eastern and western sectors) is about 22.98 million m2. Fifteen plants are located in the eastern sector and 23 in the western sector, including two petrochemical companies, three refineries, two power plants, a melamine company, an industrial gas corporation, a paper products company and, two steam electricity generating stations, in addition to several other industries. Therefore, only 30 percent of the land in the SIA's eastern sector and 70 percent of land in the SIA's western sector is available for future expansion. Presently, industries in the SIA generate approximately 204,000 t of solid waste. With future development in the industries in the SIA, the estimated quantities will reach 240,000 t. The Shuaiba Area Authority (SAA), a governmental regulatory body responsible for planning and development in the SIA, has recognized the problem of solid waste and has developed an industrial waste minimization program. This program would help to reduce the quantity of waste generated within the SIA and thereby reduce the cost of waste management. This paper presents a description of the waste minimization program and how it is to be implemented by major petroleum companies. The protocols employed in the waste minimization program are detailed.

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