Nigeria is rich is solid mineral resources, such as: Kaolin, gypsum, mica, clay, tantalite, iron ore, gemstone, silica sand.
Read More
Recycling concrete &building rubble is not only able to bring profit to investors, but also good for environment protection.
Read More
By absorbing the advanced technology from the world, we researched and designed PF series impact crusher.…
Read More
Base on the plentiful experience of producing and marketing of impact crusher, Sofol R&D institution…
Read More
Adopting technology from the world, PY Series spring cone crusher has an excellent performance in secondary…
Read More
The vibrating screen is a kind of sieving equipment of international advanced level, developed by our…
Read More
Sofol VSI Series vertical shaft impact crusher is designed by reputed German expert of Sofol and every…
Read More
Municipal solid waste (MSW) generation has been rising as urbanization has speeded up and people's quality of life has improved. About 2.01 billion tons of MSW are produced globally each year, and by 2050 that number is projected to increase to 3.40 billion tons (Kaza et al., 2018).The domestic trash generation in China is growing annually and has …
Details
More than 5,300,000 liters (1,400,000 gal) of phosphate/sulfate waste (PSW) grout were produced and placed in vault 101 at the Hanford Site. This waste was generated during decontamination ...
Details
1–15 MPa with OPC cement content 25% in the solidification / stabilization process was good enough to comply with the limited value set by the (US EPA). In addition, the concentration of zinc ...
Details
Mineral carbonation (MC) represents a promising alternative for sequestering CO2. In this work, the CO2 sequestration capacity of the available calcium-bearing materials waste concrete and anorthosite tailings is assessed in gas-solid-liquid and gas-solid routes using 18.2% flue CO2 gas. The objecti …
Details
To investigate the characteristics and health risks of heavy metals in dust in urban and rural areas during heating and non-heating period in 2016–2017, 762 dust samples and 381 ...
Details
mercury in the final effluent * 0.01 Mercury bearing waste-water generation (flow) 10 kilolitres/ tonne of caustic soda produced. pH 5.5 to 9.0 ... Liquid 1700 850 Oxides of Nitrogen (NOx) Gas 350 250 Liquid 450 350 Particulate Matter (PM) Gas 10 5 Liquid 100 50. 404 The Environment (Protection) Rules, 1986 Sr.
Details
Keywords MSWIflyash .Heavymetals .Cement-solidified .Leaching .pHdependent .Stability ... 2017;Shaoetal.2014). As a consequence, municipal solid waste incineration (MSWI) fly ash categorized as a hazardous material must be managed and regulated more scientifically and effectively.In China, appropriately treat- ... the ratio of liquid to solid ...
Details
Ordinary Portland cement (OPC)-based S/S is a prevalent and robust technique for the treatment of MSWI fly ash (Chen et al., 2022). ... CG is a solid waste generated in coal mine industries, which has been estimated 4.5–5.0 billion t in China (Deng et al., 2017). ... risk of MSWI FA after treatment is becoming a cause of concern. This paper ...
Details
2 2.1 Material and Methods Concrete materials The following materials were used to prepare samples of cement composites for the experimental study of heavy metal leachability: …
Details
During the incineration of MSW, the generation of secondary pollutants, such as fly ash, containing trace amounts of leachable heavy metals, chlorides, sulphates, and organic substances poses a significant risk to the environment [9], [10].Accordingly, MSWI fly ash is classified as hazardous waste on the global scale [11], [12], [13]positional analysis of …
Details
As a byproduct of municipal solid waste incineration (MSWI) plant, fly ash is becoming a challenge for waste management in recent years. In this study, MSWI fly ash (FA) was evaluated for the potential capacity of odorous gas H 2 S removal. Results showed that fly ash demonstrated longer breakthrough time and higher H 2 S capacities than coal fly ash and …
Details
For instance, E. Tugrul et al. studied waste marble as an ingredient in concrete, and indicated that the concrete which consists of waste marble instead of the coarse/fine aggregate, cement, ... The TCLP is a batch leaching test conducted at a "liquid to solid (L/S)" ratio of 20:1 (L/kg) with sample size reduced to pass a 9.5 mm sieve prior ...
Details
In 2022 alone, more than 120 million metric tons of cement were used across the U.S., most of which was necessary for construction projects. Over the past decade, concrete usage has increased nearly every year. Whether you use a ready-mix solution or traditional concrete, construction crews are tasked with mixing concrete with water to create a ...
Details
Cement, crucial for construction, poses significant environmental risks due to heavy metal contamination, including lead, cadmium, chromium, nickel, etc. These metals, released during cement production, endanger both human health and ecosystems. ... Study On Bioremediation Of Heavymetals Present In Cement - Vaishnavi V, Dr.R.Manju - IJFMR ...
Details
preventingthe hazardous waste from reaching receptors. S/S is conducted by mixingvarious types of binders, additives, and chemicals into the ... Fixation (i.e., Contaminatedmedia mixed with portland cement, or an agent addedto create an insoluble salt of the contaminant(e.g., trisodium phosphate ... heavymetals. It is easily melted (127° to ...
Details
In a homogeneous process, waste, cement and water (& additives) are mixed together to produce grouts. As a result, the mixing equipment becomes contaminated – which is the reason why this technology has ... Liquid waste is indeed continuously fed to the mixer (Fig. 4) where cement is added. After a brief residence time in the mixing zone (2-3 ...
Details
The durability has been evaluated by the changes of the flexural strength of mortar, fabricated with this cement, immersed in a simulated radioactive liquid waste rich in sulfate (0.5 M), chloride (0.5 M) and sodium (1.5 M) ions – catalogued like severely aggressive for the traditional Portland cement – and demineralised water, which was ...
Details
The technique is not recommended for dilute solutions but is effective for a high concentration of heavy metals in waste liquids. Increasing the distance between electrodes from 5 to 12 cm resulted in a decrease in the % recovery from 20.9% to 15.7%, at a linear flow rate …
Details
Basically, the cement solidification technique involves mixing prepared waste with cement to produce slurry, which sets in about three days and attains its maximum strength in about six months. ... Polymer additives can be classified into three groups: latices, liquid res- ins, and water soluble polymers. Of these, the latex polymers have been ...
Details
World health organization (WHO) has set guidelines for the maximum permissible limits on these toxic heavy metals and their consequences to human health when those limits are surpassed in drinking water and industrial waste water, as listed in Table 2 [10], [11].Contamination of agricultural soils and crops by heavy metals produced from industries …
Details
MSWI FA used in this experiment was obtained by the waste incineration power plant in Shaoxing, Zhejiang province, China. In the experiment, the CDW, primarily waste concrete products (), was provided from demolition waste at Zhejiang University. The programs of preparing CDW precursors were shown in Fig. S1. Initially, the CDW was …
Details
A real industrial electroplating rinsing wastewater was collected and subjected to physical and chemical examination. The study showed that it can be categorized as high strength wastewater, at pH- 2, COD 1430 mg/l, and high level of metals above permissible limits, namely: 150, 30, 25, and 2.9 for Ni, Cu, Zn, and Fe mg/l respectively.
Details
The environmental risk of heavy metals in hazardous municipal solid waste incineration fly ash (FA) is one of the most important concerns for its safely treating and disposing. ... Pb and Zn) (>91.5 %) were stabilized in the hydrothermal product, rather than transferred to liquid phase. Tobermorite can be synthesized by adjusting Ca/Si ratio ...
Details
As waste liquid becomes concentrated, the copper ion concentration in the liquid can become 10-fold higher than the initial concentration, and this liquid could be used to rinse plating parts to achieve the recycling of copper metal and save resources and expenses. However, after a long operation time, the foulants deposited on the membrane ...
Details
The M-PW test was applied to leaching of lead and zinc ions from ground Portland cement mortar incorporating Municipal Solid Waste Incinerator (MSWI) fly ash. Correlation of …
Details
Furthermore, the adsorbate characteristics and adsorbent surfaces can be studied in detail using liquid–solid isotherms. Table 4, Table 5, ... Immobilization and stabilization immobilization are two possible ways of securely disposing of the final effluent; for example, utilizing in concrete technology as a binder material [265,266].
Details
Tradition Portland cement (PC) is the main binder used due to its inexpensive and efficient heavy metal stabilization (Batchelor, 2006, Du et al., 2018, Paria and Yuet, 2006).During the …
Details
Characteristics of municipal solid waste incineration fly ash with cement solidification treatment. J Energy Inst (2016) T. Fruergaard et al. Optimal utilization of waste-to-energy in an LCA perspective. Waste Manag (2011) ... Through examining the impact of liquid/solid ratio and pH levels on the chemical composition of MSWI FA during the ...
Details
To evaluate the optimum solid to liquid ratio for step 2, S/S waste samples were first extracted for 5 ... X.D. Li, C.S. Poon, The solubility and chemical forms of heavy metals in …
Details
It provides a clarification of heavy metal effects on cement hydration and the fundamental chemical mechanisms by which the inhibition of cement takes place. Hence; it is possible to reach some conclusions about the potential effects of most waste constituents even in the absence of particular studies on specific compounds.
Details
Mineral carbonation (MC) represents a promising alternative for sequestering CO 2.In this work, the CO 2 sequestration capacity of the available calcium-bearing materials waste concrete and anorthosite tailings is assessed in gas–solid–liquid and gas–solid routes using 18.2% flue CO 2 gas. The objective is to screen for a better potential residue and phase route …
Details
Water is also used as a transport medium to carry away waste products. As awareness of the importance of improved standards of water treatment grows, process requirements become increasingly exacting. ... (Doedens) that the …
Details
Download Intermediate and Low Level Nuclear Waste Stabilisation [electronic Resource] : Carbonation of Cement-based Wasteforms PDF full book. Access full book title Intermediate and Low Level Nuclear Waste Stabilisation [electronic Resource] : Carbonation of Cement-based Wasteforms by Sean A. Andreou. Download full books in PDF and EPUB format.
Details
According to the current regulations, MSW incineration fly ash could be disposed of in sanitary landfills after stabilization if the leachate could meet the requirements outlined in the Standard for Pollution Control on the Landfill Site of Municipal Solid Waste" (GB 16889-2008) (MEP, 2008b), or reused in cement kilns based on the Standard ...
Details
Sofol is a well-known crusher and grinding mill manufacturer that offers equipment and solutions for customers from aggregates, mining and mineral grinding industry.
You can leave your message here, we'll send you an Email immediately.
Online ChatCopyright ©2000- 2024 Shanghai Sofol CompanySitemap
PE series jaw crusher is usually used as primary crusher in quarry production lines, mineral ore crushing plants and powder making plants.
GET QUOTE