Effectiveness of a novel biopolymer-based mulch in reducing particulate emissions from iron ore concentrate piles located in arid lands

نوع مقاله : مقاله پژوهشی

نویسندگان

1 Department of Nature Engineering, Faculty of Agriculture & Natural Resources, Ardakan University, P.O. Box 184, Ardakan, Iran.

2 Department of textile engineering, Yazd University, Yazd, Iran

3 Chadormalu Industrial Complex Research and Development, Chadormalu Mining and Industrial Company, Yazd, Iran

4 Department of Chemistry, Faculty of Science, Payam-e Nour University of Ardakan, Yazd, Iran.

‎10.22052/deej.2026.258005.1128

چکیده

In this study the effectiveness of BDS as a new biopolymer-based mulch was compared with slurry lime and sugarcane molasses as conventional compounds for covering iron concentrate storage piles in controlling wind erosion.The experiments were conducted in a factorial design in a randomized complete block design. BDS at 1% and 2%, slurry lime at 10% and molasses at 20% solutions concentrations were prepared. Each of the treatments was sprayed on three trays filled with concentrate. The prepared sample trays were subjected to wind erosion tests in a wind tunnel after 1 week, 2 weeks and 3 weeks of preparation. Among the selected treatments, the BDS2% showed the highest efficiency, reducing wind erosion 0.34 kg/m²/h compared to 2.1 kg/m²/h in the control and increasing the erosion threshold speed to 54 km/h, whereas the control had a threshold of only 26 km/h. Slurry Lime offered less resistance to wind erosion with an erosion rate of 1.8 kg/m²/h and a threshold velocity of 39.6 km/h. The effectiveness of molasses and BDS1% was similar with erosion rates of 1.1 and 1.2 kg/m²/h, and threshold velocities of 47.5 and 48.2 km/h, respectively. Moreover, the mulches effectiveness reduced over time and erosion rates increasing by an average of 35–50% from week 1 to week 3. Considering the advantages of the new material, including environmental compatibility, no negative effects on the pellet and favorable efficiency in protecting against wind erosion, it can replace conventional compounds as a mulch for iron concentrate piles.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Effectiveness of a novel biopolymer-based mulch in reducing particulate emissions from iron ore concentrate piles located in arid lands

نویسندگان [English]

  • Fatemeh Roustaei 1
  • Mohammad Khajeh Mehrizi 2
  • Hasan Akhiri 3
  • Jafar Mahmudi 4
1 Department of Nature Engineering, Faculty of Agriculture & Natural Resources, Ardakan University, P.O. Box 184, Ardakan, Iran.
2 Department of textile engineering, Yazd University, Yazd, Iran
3 Chadormalu Industrial Complex Research and Development, Chadormalu Mining and Industrial Company, Yazd, Iran
4 Department of Chemistry, Faculty of Science, Payam-e Nour University of Ardakan, Yazd, Iran.
چکیده [English]

In this study, the effectiveness of BDS mulches as a new biopolymer-based mulch was compared with slurry lime and sugarcane molasses as conventional compounds for covering iron concentrate storage piles in controlling wind erosion. The experiments were conducted in a factorial design in a randomized complete block design. BDS at 1% and 2%, slurry lime at 10% and molasses at 20% solutions concentrations were prepared. Each of the treatments was sprayed on three trays filled with concentrate. The prepared sample trays were subjected to wind erosion tests in a wind tunnel after 1 week, 2 weeks and 3 weeks of preparation. Among the selected treatments, the BDS2% showed the highest efficiency, reducing wind erosion 0.34 kg/m²/h compared to 2.1 kg/m²/h in the control and increasing the erosion threshold speed to 54 km/h, whereas the control had a threshold of only 26 km/h. Slurry Lime offered less resistance to wind erosion with an erosion rate of 1.8 kg/m²/h and a threshold velocity of 39.6 km/h. The effectiveness of molasses and BDS1% was similar with erosion rates of 1.1 and 1.2 kg/m²/h, and threshold velocities of 47.5 and 48.2 km/h, respectively. Moreover, the mulches effectiveness reduced over time and erosion rates increasing by an average of 35–50% from week 1 to week 3. Considering the advantages of the new material, including environmental compatibility, no negative effects on the pellet and favorable efficiency in protecting against wind erosion, it can replace conventional compounds as a mulch for iron concentrate piles.

کلیدواژه‌ها [English]

  • Mulch
  • BDS
  • Wind erosion
  • Threshold velocity

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