Atmospheric Particulate Emissions from Dry Abrasive Blasting Using Coal Slag

Kura, Bhaskar; Kambham, Kalpalatha; Sangameswaran, Sivaramakrishnan; Potana, Sandhya

doi:10.1080/10473289.2006.10464533

Cited by 9 publications

(5 citation statements)

References 4 publications

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“…Among all sampling sites most all measured heavy metal concentrations were found higher which is situated near a shipyard. High concentration of heavy metals release from base material (e.g., steel, stainless steel, galvanized steel, aluminum, copper-nickel and other copper alloys), abrasive blasting materials (e.g., coal slag, copper slag, nickel slag, glass, steel grit, garnet, silica sand), surface coatings (e.g., preconstruction primers, anticorrosive and antifouling paints) and welding materials in shipyard (Kura et al, 2006;OSHA, 2006) and deposited in river sediment. The mean concentrations of Cd, Pb and Zn in the Meghna river sediments were found lower but Ni was found higher than WHO (2004), USEPA (1999) and CCME (1999) Sediment Quality Guidelines (SQG).…”

Section: Heavy Metals In Sedimentsmentioning

confidence: 99%

Status of Heavy Metals in Water and Sediment of the Meghna River, Bangladesh

Hassan¹,

Rahman²,

Saha³

et al. 2015

American Journal of Environmental Sciences

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Abstract:The pollution of river water and sediments by heavy metals has assumed serious problems due to their toxicity and accumulative behavior. The present study has been undertaken to assess the levels of heavy metals and the extent of pollution in the surface water and sediments from the Meghna river. Water and sediment samples were collected by the Standard Methods and, processed and analyzed for heavy metals using Flame Atomic Absorption Spectrophotometer (FAAS). The mean concentrations of heavy metal found in the river water were in the order of: ). Pb and Ni were found below detection limit in river water. Based on the findings, the Meghna river water can be considered as unpolluted with respect to Cd, Cr, Mn and Zn, whereas concentration of Fe was above the standard value according to recommended standard guidelines. According to Sediment Quality Guideline (USEPA, 1989), sediments were not polluted for Cd, Pb and Zn; moderately polluted for Cr and Mn and heavily polluted for Ni. The sediment geo-accumulation index (I geo ) values showed no pollution for most of sampling sites for all studied heavy metals. Pollution Load Index (PLI) values showed that all the studied sampling sites were not polluted and on the other hand mean Contamination Factor (CF) values showed low pollution for all measured heavy metals except Ni which indicated moderate pollution. This study can be used as reference to monitor the quality of water and sediments of the Meghna river.

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Section: Heavy Metals In Sedimentsmentioning

confidence: 99%

Status of Heavy Metals in Water and Sediment of the Meghna River, Bangladesh

Hassan¹,

Rahman²,

Saha³

et al. 2015

American Journal of Environmental Sciences

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“…In a study examining the environmental eff ects of blasting applied for the preparation of the ship surface for the painting process, the emission factors in the case of separate blasting for rusty and painted surfaces were calculated and it was seen that a much larger amount of blasting should be used for the preparation of rusty surfaces [33]. In a study on the welding process, in the measurements made for diff erent electrode types (rutile, basic, and cellulosic), C, Mn, Si, P, and S elements were found intensely in the welding fume [34].…”

Section: Shipyard-environment Interaction / Interakcija Brodogradiliš...mentioning

confidence: 99%

A Literature Analysis on Environmental Impacts and Relevant International Legislation of Shipyards

Şahin,

Bilgili

2024

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Shipyards are the place where the life cycle of a ship begins and ends. The life cycle of a ship, which starts with painting, blasting, and welding processes during the construction, is completed with the recycling of the steel parts and other equipment after the ship is scrapped. In this study, the harmful waste generated during the construction and recycling of ships in the shipyard and the environmental damage caused by this waste were investigated through a literature analysis. The content, implementation procedures and development processes of the relevant regulations are also examined. To fully evaluate the cumulative and holistic environmental impacts of shipyard processes, it is recommended to make greater use of the life cycle assessment approach. In this way, it will be possible to determine which process is more environmentally harmful during the shipbuilding, operation, and recycling phases, and to accurately determine the overall impact.

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“…The matter could cause respiratory problems, decreased lung functions, and aesthetic and ecological problems. The operation decreases visibility at the workplace and may cause unwanted noise [51,52]. This operation is important for production in this enterprise and is also used several times in the production process.…”

Section: Analysis Of the Production Enterprisementioning

confidence: 99%

Redesigning the Production Process Using Simulation for Sustainable Development of the Enterprise

et al. 2022

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In this case study, the medium-sized enterprise is looking for ways to achieve sustainable development. Following the Industry 4.0 trend could get the enterprise closer. The rate of information technology usage is very low in the enterprise. The enterprise’s problem is the long production of orders. The orders had to be rejected many times because the customer’s time limit could not be met. The major cause seems to be two environmentally insufficient and obsolete machines in the blast cleaning operation. These machines are replaced in the production by one new wheel blast machine. However, the production process must be redesigned and the layout changed to use this machine effectively. This redesign is difficult to verify and evaluate in the pilot plant experiment. Simulation is the most suitable tool to do it quickly and relatively easily. The ExtendSim simulation program creates a real production process model and then applies the redesign of this process in the model. The model must be thoroughly verified concerning the real production process to not distort the results. The result of the redesign of the production process is the reduction of the production duration by almost 50% and elimination of two environmentally insufficient and obsolete machines. Improved machine blast cleaning has also significantly reduced the utilization of blast cleaning. Spared capacities can be used for pre-production or otherwise for the profit-making of the enterprise. However, a new bottleneck appeared elsewhere in the production process by removing the previous one. The innovation passed through barriers, and Slovak small and medium enterprises started building sustainable development. The enterprise still must focus on further innovation, and more investment will be needed to achieve the final sustainable development goal.

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Atmospheric Particulate Emissions from Dry Abrasive Blasting Using Coal Slag

Cited by 9 publications

References 4 publications

Status of Heavy Metals in Water and Sediment of the Meghna River, Bangladesh

Status of Heavy Metals in Water and Sediment of the Meghna River, Bangladesh

A Literature Analysis on Environmental Impacts and Relevant International Legislation of Shipyards

Redesigning the Production Process Using Simulation for Sustainable Development of the Enterprise

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