Design of mesoporous ZnO @ silica fume-derived SiO2 nanocomposite as photocatalyst for efficient crystal violet removal: Effective route to recycle industrial waste

In the exploratory study presented in this paper, an attempt was made to develop different mixtures of ultrahigh performance concrete (UHPC) using various locally available natural and industrial waste materials as partial replacements of silica fume and sand. Materials such as natural pozzolana (NP), fly ash (FA), limestone powder (LSP), cement kiln dust (CKD), and pulverized steel slag (PSS), all of which are abundantly available in Saudi Arabia at little or no cost, were employed in the development of the UHPC mixtures. A base mixture of UHPC without replacement of silica fume or sand was selected and a total of 24 trial mixtures of UHPC were prepared using different percentages of NP, FA, LSP, CKD, and PSS, partially replacing the silica fume and sand. Flow and 28-d compressive strength of each UHPC mixture were determined to finally select those mixtures, which satisfied the minimum flow and strength criteria of UHPC. The test results showed that the utilization of NP, FA, LSP, CKD, and PSS in production of UHPC is possible with acceptable flow and strength. A total of 10 UHPC mixtures were identified with flow and strength equal to or more than the minimum required.

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Crystal violet adsorption on industrial waste (hog fuel ash): equilibrium kinetics with process optimization by response surface modeling

Clean Technologies and Environmental Policy ◽

10.1007/s10098-017-1471-5 ◽

2017 ◽

Vol 20 (2) ◽

pp. 291-308 ◽

Cited By ~ 2

Author(s):

Amitava Bandyopadhyay ◽

Chandrima Choudhury

Keyword(s):

Response Surface ◽

Process Optimization ◽

Crystal Violet ◽

Industrial Waste ◽

Surface Modeling ◽

Response Surface Modeling ◽

Fuel Ash

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Utilization of Industrial Waste in Cement in a Marine Environment with a Tropical Climate

Journal of Marine Science and Engineering ◽

10.3390/jmse7080245 ◽

2019 ◽

Vol 7 (8) ◽

pp. 245 ◽

Cited By ~ 1

Author(s):

Thi Chu ◽

Jinhai Zheng ◽

Da Chen ◽

Thi Nguyen ◽

Elsafi Elbashiry ◽

...

Keyword(s):

Fly Ash ◽

Silica Fume ◽

Cement Paste ◽

Marine Environment ◽

Industrial Waste ◽

Building Materials ◽

Rapid Development ◽

Chloride Ion ◽

Tropical Climate ◽

Test Results

This novel study on cement paste material was conducted with the aim of keeping up with the rapid development of urban construction and contributing to the continuous improvement of building materials to overcome environmental issues. In this study, several kinds of industrial waste were used to enhance the properties of cement paste for application in a marine environment with a tropical climate, such as in Vietnam. This study focuses on evaluating the properties of cement paste containing cement replacement combining 0–30% fly ash, 0–10% silica fume, and plasticizer accounting for 0.3% and 0.4% of the binder by mass. Water demand, chloride ion and sulfate ion permeability, and microstructural properties of the cement paste were determined by thermogravimetric analysis (TGA), X-ray diffraction (XRD), and scanning electron microscope (SEM) and they were investigated after 28 and 56 days. The test results show that an optimum mixture could be obtained with the use of 20% fly ash, 10% silica fume (replacing Portland cement), and 0.4% plasticizer. The application of such materials to sea dikes affected by a tropical climate (characterized by heat, humidity, salty seawater, many big storms, large waves, and strong tides) was investigated for four years on the Vietnamese coast. The test results indicate that fly ash and silica fume can improve the corrosion and abrasion resistance of concrete in coastal areas with a tropical climate, such as in Vietnam.

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An Experimental Study on the Compressive Strength of Alccofine with Silica Fume Based Concrete

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.857.36 ◽

2016 ◽

Vol 857 ◽

pp. 36-40 ◽

Cited By ~ 1

Author(s):

Kumar S. Rajesh ◽

Amiya K. Samanta ◽

Dilip K. Singha Roy

Keyword(s):

Compressive Strength ◽

Silica Fume ◽

Industrial Waste ◽

Physical And Mechanical Properties ◽

The Other ◽

Industrial Wastes ◽

Cement Replacement ◽

Cement Manufacture ◽

Good Improvement ◽

Compressive Strength Of Concrete

This investigation is focused on the physical and mechanical properties of Alccofine (AF) incorporating silica fume (SF) on M20 grade concrete. Normally, these industrial wastes (SF) are disposed off in landfill. The use of these industrial waste in concrete could reduce waste in the environment as well helps the environment against pollution as it is known that one ton of cement manufacture released one ton of carbon dioxide to the environment .Alccofine is a new replacement material on which very limited research has been done, its effect with flyash has been studied. The current study is a new experimental research undertaken to study the effect of alccofine on SF based concrete. Alccofine was varied in percentages of 0, 5, 10 and 15%, Silica fume was varied in percentages of 0, 5, 10, 15 % The aim of the investigation was to see the effect of alccofine on compressive strength of concrete and do a comparison on 7, and 28 days strength.The results showed that the cement replacement by 10% of alccofine gives higher values when compared with all other mix. The cement replacement by 10% alccofine gave a good improvement in compressive strength. Alccofine has the better performance when compare to the other slag material. It is helpful to make concrete workable

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Enhanced photocatalytic performance of CeO2–TiO2 nanocomposite for degradation of crystal violet dye and industrial waste effluent

Applied Nanoscience ◽

10.1007/s13204-018-0730-z ◽

2018 ◽

Vol 8 (5) ◽

pp. 1091-1099 ◽

Cited By ~ 10

Author(s):

Mehvish Zahoor ◽

Amara Arshad ◽

Yaqoob Khan ◽

Mazhar Iqbal ◽

Sadia Zafar Bajwa ◽

...

Keyword(s):

Crystal Violet ◽

Industrial Waste ◽

Photocatalytic Performance ◽

Crystal Violet Dye ◽

Industrial Waste Effluent

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Role of Alkaline Cations on Geomaterial Foams

Advances in Science and Technology ◽

10.4028/www.scientific.net/ast.69.97 ◽

2010 ◽

Vol 69 ◽

pp. 97-106 ◽

Cited By ~ 3

Author(s):

Elodie Prud'Homme ◽

Philippe Michaud ◽

Emmanuel Joussein ◽

Claire Peyratout ◽

Agnes Smith ◽

...

Keyword(s):

Elevated Temperature ◽

Silica Fume ◽

Sodium Silicate ◽

Industrial Waste ◽

Foam Formation ◽

Alkaline Activation ◽

Alkaline Cation ◽

Alkaline Cations

The synthesis of geopolymers based on alkaline polysialate, was achieved at slightly elevated temperature, by alkaline activation of raw minerals and industrial waste. The materials were prepared from a solution containing dehydroxylated kaolinite and alkaline hydroxide pellets dissolved in potassium or sodium silicate. Then the mixture was transferred to a polyethylene mould sealed with a top and placed in an oven at 70°C during 24 hours. The addition of an industrial waste, silica fume, leads to the formation of an in-situ inorganic foam. Whatever the alkaline cation, foam formation occurs. The properties depend on the viscosity of silicate precursors due to the amount of water and to the size of alkaline.

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Spent ground coffee – awaking the sustainability prospects

Environmental and Toxicology Management ◽

10.33086/etm.v1i1.2016 ◽

2021 ◽

Vol 1 (1) ◽

pp. 1-6

Author(s):

Ahmad Beng Hong Kueh

Keyword(s):

Silica Fume ◽

Industrial Waste ◽

Scientific Community ◽

Construction Materials ◽

Value Engineering ◽

Coffee Drinking ◽

Left Behind ◽

Spent Coffee Ground ◽

Coffee Ground ◽

Ground Coffee

This paper outlines the threat of spent coffee ground (SCG) towards environmental health and some promising remedial efforts carried out by the scientific community working against it. To maintain human and earth wellbeing, massive biowastes left behind by the rising popularity of coffee drinking and its processing must be properly addressed. The recent waste to wealth value engineering efforts carried out to repurpose these biowastes are first presented. Some promising applications of SCGs in various prospective civil engineering areas alongside their favorable findings are then summarized. Attributed to beneficial properties as reported in existing studies, silica fume is recommended as the potential constituent to mix with SCG for future construction materials exploration in overcoming both the biowaste and industrial waste issues.

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Application of Automobile Used Engine Oils and Silica Fume to Improve Concrete Properties for Eco-Friendly Construction

Environmental and Climate Technologies ◽

10.2478/rtuect-2020-0008 ◽

2020 ◽

Vol 24 (1) ◽

pp. 123-142 ◽

Cited By ~ 1

Author(s):

Ali Mohammed Okashah ◽

Muyideen Abdulkareem ◽

Ahmad Z. M. Ali ◽

Fadilah Ayeronfe ◽

Muhammad Z. A. Majid

Keyword(s):

Silica Fume ◽

Industrial Waste ◽

The Other ◽

Industrial Wastes ◽

Engine Oil ◽

Engine Oils ◽

Concrete Properties ◽

Hardened State ◽

Compressive Strength Of Concrete ◽

Proper Disposal

AbstractProper disposal of industrial waste can be very burdensome and expensive. On the other hand, improper disposal leads to environmental denigration. A brilliant, safe and cheap means of industrial waste disposal is its addition to concrete. These wastes are added to concrete to modify or improve the properties of the concrete in its fresh and/or hardened state. Used engine oil (UEO) and Silica fume (SF) are industrial wastes that can cause serious environmental pollution. A gallon of UEO is sufficient to pollute a million gallons of water. In this study, two types of UEOs (petrol and diesel engines) and SF are incorporated into concrete to improve the latter’s properties. The two UEOs are applied since they differ in chemical composition and undergo different operations. This study involves obtaining the optimum amounts of UEOs by considering workability and 28-day compressive strengths. Thereafter, SF of 10 % and 15 % replacement of cement was added to concrete with optimum UEOs and the properties were evaluated. The results showed that the UEOs and SF can be disposed of by adding to concrete to modify or improve properties. The results showed that the optimum DUEO and PUEO are 0.8 % and 0.6 % with 32 N/mm2 and 31 N/mm2 compressive strengths. The addition of the SF decreased workability by as much as 17.6 %, while having no significant influence on the compacting factor. In addition, the 10 % and 15 % of SF showed increase in the compressive strength of concrete with optimum UEOs by as much as 37 %.

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