Emissions Control of Hydrochloric and Fluorhydric Acid in cement Factories from Romania

Voicu, Gheorghe; Ciobanu, Cristian; Istrate, Irina Aura; Tudor, Paula

doi:10.3390/ijerph17031019

Cited by 9 publications

(5 citation statements)

References 27 publications

(31 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The aim was to determine the average monthly concentration (mg/Nm 3 ) from the two points concerning the maximum limit of the integrated environmental permit; the AIM of the cement plant. The measurements were performed under reference conditions for atmospheric emissions: 273 K, p = 101.3 kPa, dry gas, 10% O 2 concentration [43].…”

Section: Resultsmentioning

confidence: 99%

Dust Emission Monitoring in Cement Plant Mills: A Case Study in Romania

Ciobanu

Istrate

Tudor

et al. 2021

IJERPH

Self Cite

View full text Add to dashboard Cite

This paper presents aspects of monitoring material dust emissions from stationary emission sources (monthly dust measurements performed on cement mill stacks—mill outlet and separator outlet). Additionally, the Portland cement mill technological process (its component parts), as well as the solutions regarding the reduction of the air emissions level, following the emission limit values (VLE), established in the integrated environmental authorization (AIM) from a cement factory in Romania, were analyzed. The paper focused on analyzing the data obtained in three different years for PM10 and dust concentrations (2018–2020). For each year, the measurements have been done in 3 months, each in a different season. The average values for each year for working conditions were: 30.22 mg/m3 (2018), 27.38 mg/m3 (2019), and 27.51 mg/m3 (2020) for working conditions and for normal conditions: 34.22 mg/m3 (2018), 30.49 mg/m3 (2019), and 30.16 mg/m3 (2020). For all 3 years, the values measured in spring were higher than the other two, both for work and normal conditions.

show abstract

Section: Resultsmentioning

confidence: 99%

Dust Emission Monitoring in Cement Plant Mills: A Case Study in Romania

Ciobanu

Istrate

Tudor

et al. 2021

IJERPH

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, the AP of using mining residues still have lower proportions than REF (1.87 × 10 −1 kg SO 2 eq.). The emissions from the combustion processes of the kilns in a cement industry may release HCl and HF [46], with repercussions in the AP.…”

Section: Impacts Of Raw Materials In Mortar Manufacturementioning

confidence: 99%

Life Cycle Assessment of Mortars Produced Partially Replacing Cement by Treated Mining Residues

et al. 2021

View full text Add to dashboard Cite

The use of secondary mining resources to replace conventional constituents in mortars production has proved the effectiveness to preserve the quality of mechanical, physical, and chemical properties. However, minimal research has been performed to quantify the environmental impacts of mortars with mining residues. In the present work, a life cycle assessment of 10 mortars was carried out. A reference mortar (100% of cement binder) and mortars with cement substitutions in 10, 25, and 50% by raw, electrodialytic treated, and electrodialytic plus thermal treated mining residues were analysed. The impacts were studied in six environmental categories: (1) abiotic depletion; (2) global warming; (3) ozone depletion; (4) photochemical ozone creation; (5) acidification; and (6) eutrophication potentials. The results demonstrated that mortars formulated with raw mining residues may decrease the environmental impacts, namely in global warming potential (55.1 kg CO2 eq./t modified mortar). Considering the treatments applied to mining residues, the major mitigations were reported in photochemical ozone creation (−99%), ozone depletion (−76 to −98%), and acidification potential (−90 to −94%), mainly due to the disposal impacts avoided in comparison to the reference mortar. Analysing all mortars’ constituents and their management options, products with electrodialytic treated mining residues showed higher influence in ozone depletion (18 to 52%). Coupling a thermal procedure, mining residues contributed for 99% of the abiotic depletion potential of mortars.

show abstract

“…The development of urbanization implies an increased demand for cement, and implicitly, an increase in carbon dioxide emissions [4][5][6]. This paper highlights the positive impact of ash from sewage sludge in the construction industry.…”

Section: Introductionmentioning

confidence: 99%

Recovery of Sewage Sludge in the Cement Industry

et al. 2022

Self Cite

View full text Add to dashboard Cite

This paper presents an analysis of the literature that studies the possibility of sewage sludge being used in the cement industry to reduce carbon dioxide emissions from cement production and thus solve the problem of disposing of sewage sludge so that it is no longer stored, avoiding soil pollution with heavy metals, and reducing pressure on the environment. The ash of sewage sludge is a good pozzolanic material, because when it is finely ground, it can be used as a partial substitute for Portland cement. This reduces waste storage costs. Sewage sludge ash was mixed with cement, and it was analyzed to determine whether the paste obtained could be used as a raw material in the cement industry. The presented results are on the hydration characteristics of the sewage sludge ash, the compressive strength of the cement determined after different days, the workability of the cement, and the porosity of the cement paste and the ash.

show abstract

Emissions Control of Hydrochloric and Fluorhydric Acid in cement Factories from Romania

Cited by 9 publications

References 27 publications

Dust Emission Monitoring in Cement Plant Mills: A Case Study in Romania

Dust Emission Monitoring in Cement Plant Mills: A Case Study in Romania

Life Cycle Assessment of Mortars Produced Partially Replacing Cement by Treated Mining Residues

Recovery of Sewage Sludge in the Cement Industry

Contact Info

Product

Resources

About