Mineral Pumice Efficiency in Wastewater Treatment in Dairy Industries

• Autorzy: Vanani Hamid Raeisi , Ostad-Ali-Askari Kaveh

Identyfikatory

DOI

10.2478/heem-2023-0009

• Języki publikacji: EN

Abstrakty

EN

In this study, the effectiveness of mineral pumice application in sewage treatment in the dairy industries was investigated, with various factors such as adsorbent dose, mixing speed, pH and contact time being studied in detail. The results obtained showed that mineral pumice in a granular form, with a contact time of 20 hours and a volume fraction of one third and pH of 8 has the ability to COD (Chemical Oxygen Demand) decreasing up to 56.9%. However, by using mineral pumice in powder form, in three cases considered, higher efficiency than for pumice granules has been observed. It seems that acidity conditions do not have a positive effect on this efficiency. As the contact time increased, the adsorption rate increased, mostly due to increased probability of collision with the adsorbent surface. With an increasing adsorbent dose, the absorption rate also increased, especially in the range of 15 g/l. Regarding the mixing speed, no definite conclusion can be drawn, because in some cases, with increasing mixing speed, the COD reduction efficiency decreased. Considering the use of mineral pumice in reducing COD, in accordance with to the obtained results, it is better to use mineral pumice in granular, rather than in powder, form.

Słowa kluczowe

EN

Mineral pumice; Sewage of the dairy industries; COD; Sewage treatment

• Wydawca: Institute of Hydro-Engineering of Polish Academy of Sciences
• Czasopismo: Archives of Hydro-Engineering and Environmental Mechanics
• Rocznik: 2023
• Tom: Vol. 70, nr 1
• Strony: 129--139
• Opis fizyczny: Bibliogr. 13 poz., rys., tab., wykr.

Twórcy

autor

Vanani Hamid Raeisi

• student, Water Engineering Department, College of Agriculture, Shahrekord University, Shahrekord, 8818634141, Iran

autor

Ostad-Ali-Askari Kaveh

• Visiting Researcher, Department of Natural Sciences, Manchester Metropolitan University, Manchester, M1 5GD, United Kingdom
• World Top 2-Percent Researcher, Standford University, USA, 2022
• Research Associate at the Department of Civil Engineering, School of Engineering, American University in Dubai, Dubai, Sheikh Zayed Road, P. O. Box: 28282, United Arab Emirates

• https://orcid.org/0000-0001-5637-1124

Bibliografia

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