Results 251 to 260 of about 77,020 (294)
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Enhancing biohydrogen production from waste activated sludge disintegrated by sodium citrate
Fuel, 2019Abstract This study adopted sodium citrate, a cation-binding agent, to disintegrate the complex matrix of waste activated sludge, which aimed to improve hydrogen fermentation efficiency of the sludge. Results showed that the sodium citrate treatment effectively disintegrated the sludge flocs through removing bridging multivalent cations, which led to
Jianlong Wang
exaly +2 more sources
Multi‐Criteria Analysis for Optimization of Sodium Chromate Production from Chromic Waste
Clean - Soil, Air, Water, 2011AbstractThe proposal of application of multi‐criteria analysis and technological quality method for optimization of technological processes on the case study of sodium chromate production variants from waste was presented. The research on the use of chromic waste for the production of sodium chromate made it possible to determine the optimal process ...
Agnieszka Makara +2 more
exaly +3 more sources
Journal of Hazardous Materials, 2020
The reaction of aluminium dust and water generated in the production of aluminium products generates hydrogen, which poses a risk to wet collection systems for hydrogen explosions. In this paper, non-toxic and environmentally friendly sodium D-gluconate is used to suppress the hydrogen production reaction of aluminium waste dust and water.
Kaili Xu
exaly +3 more sources
The reaction of aluminium dust and water generated in the production of aluminium products generates hydrogen, which poses a risk to wet collection systems for hydrogen explosions. In this paper, non-toxic and environmentally friendly sodium D-gluconate is used to suppress the hydrogen production reaction of aluminium waste dust and water.
Kaili Xu
exaly +3 more sources
Use of Waste Sodium Sulfate from Battery Chemical Production in the Preparation of Alkali-Activated Materials [PDF]
ACS Sustainable Resource ManagementLarge amounts of metal sulfates are formed annually in industrial activities. Until now, there has been no cost-efficient technical method for the treatment of sulfate wastes. In this article, we present a study on the reuse of waste sodium sulfate solution from battery chemical production in the synthesis of alkali-activated materials (AAMs).
Anne Heponiemi +3 more
openaire +4 more sources
Utilization of Tannery Wastes for the Production of Sodium Chromate(VI)
Industrial & Engineering Chemistry Research, 2001This paper presents results of research on utilizing chromic waste, such as chromic mud from the current production and chromic tannery waste in the sodium chromate production process, in the area determined by the range of variation of selected process parameters. It was established that it was possible to substitute chromic ore used as a raw material
Zygmunt Kowalski, Barbara Walawska
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Minimisation and utilisation of waste mineral sludge from sodium perborate production
Waste Management & Research: The Journal for a Sustainable Circular Economy, 2002Various approaches to waste minimisation, waste treatment and recycling or safe disposal of the waste mineral sludge from sodium perborate production are presented and critically discussed. Some most promising actions for waste (or its harmful potential) reduction on the production level are identified.
Viktor, Grilc, Rok, Jersan
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Utilisation of chromic waste in the sodium chromate (VI) production process
Journal of Loss Prevention in the Process Industries, 2002This work presents research results on the utilisation of chromic waste in the production of sodium chromate (VI). The optimal parameters of the sodium chromate (VI) process which make it possible to select the best technological solution were determined.
Zygmunt Kowalski, Zbigniew Wzorek
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Waste Management, 2021
Large amounts of by-products, including glauber's salt (GS) and microsilica (MS), are accumulated from chlor-alkali industry and ferrosilicon industry development, which not only wastes precious resources, but also causes serious environmental problems.
Yongtao, Fan +5 more
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Large amounts of by-products, including glauber's salt (GS) and microsilica (MS), are accumulated from chlor-alkali industry and ferrosilicon industry development, which not only wastes precious resources, but also causes serious environmental problems.
Yongtao, Fan +5 more
openaire +2 more sources
Bioresource Technology, 2023
This study aimed to pretreat the waste activated sludge (WAS) by ultrasonication in an energy efficient way by combining sodium citrate with ultrasonic pretreatment at 0.03 g/g suspended solids (SS) of dosage. The ultrasonic pretreatment was done at various (20-200 W) power levels, sludge concentration (7 to 30 g/L), sodium citrate dosages (0.01 to 0.2
J. Rajesh Banu +4 more
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This study aimed to pretreat the waste activated sludge (WAS) by ultrasonication in an energy efficient way by combining sodium citrate with ultrasonic pretreatment at 0.03 g/g suspended solids (SS) of dosage. The ultrasonic pretreatment was done at various (20-200 W) power levels, sludge concentration (7 to 30 g/L), sodium citrate dosages (0.01 to 0.2
J. Rajesh Banu +4 more
openaire +2 more sources
An analysis of the sodium chromate production process with chromic waste recycling
Management of Environmental Quality: An International Journal, 2005PurposeThis work seeks to present results of research which allowed the development of a technological system for the sodium chromate production process on the basis of a semi‐empirical equation.Design/methodology/approachThe proposed technological method is based on determining the defined process parameters (independent variables) which allow the ...
Zygmunt Kowalski +2 more
openaire +1 more source