Characterization of red sand dust pollution control performance via static and dynamic laboratorial experiments when applying polymer stabilizers

Ding, Xuhan; Luo, Zhenmin; Xu, Guang; Chang, Ping

doi:10.1007/s11356-021-13169-1

Cited by 8 publications

(5 citation statements)

References 30 publications

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“…Several laboratory studies have used penetrometer tests to investigate the penetration resistance of biopolymer-treated soils [19][20][21]24,25,27,30,38,63], and some have additionally found that the penetration resistance correlates with the wind erosion resistance of the soil [19,21,24,38]. Thus, in the context of laboratory studies, penetrometer tests provide a valuable qualitative indicator for evaluating the potential of a substance to enhance soil wind erosion resistance.…”

Section: Penetration Resistancementioning

confidence: 99%

“…Dissolved in water, they can be sprayed on or mixed into the soil and act by agglomerating the soil particles, thereby increasing the wind erosion resistance of the soil. Recent laboratory studies have primarily analysed indicative parameters such as the penetration resistance [18][19][20][21]24,25], crust thickness [19,20,26,27], and moisture retention [21,[27][28][29][30][31] of biopolymer-treated soil samples or measured the wind erosion resistance in wind tunnel studies [18,19,21,28,30,[32][33][34]. While these laboratory studies have demonstrated the potential of biopolymers to act as dust suppressants, field trials are needed to investigate the effectiveness, durability, and scalability of their applications under actual field conditions.…”

Section: Introductionmentioning

confidence: 99%

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Effectiveness of Protein and Polysaccharide Biopolymers as Dust Suppressants on Mine Soils: Large-Scale Field Trials

Sieger

Lottermoser

Freer

2023

Mining

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Recent laboratory studies have shown that biopolymers have the potential to act as dust suppressants on barren mine soils. However, there is a lack of field trials investigating the effectiveness of biopolymer treatments under real field conditions on a large scale. This study performed field trials to examine the potential of three biopolymers—corn starch (CS), xanthan gum (XG), and fava bean protein concentrate (FBPC)—as dust suppressants. The field trials started in August 2022 with spraying of low doses of the selected biopolymers on trial areas of an overburden dump at the Inden open-cast lignite mine, Germany. The field trials were conducted over 45 days. They included repeated measurements of dust emissions from soil plots exposed to different airflows generated by an electric blower, visual inspections, and penetrometer tests. The results showed that all biopolymer treatments effectively suppressed dust emissions in the short term up to 8 days after application. Total suspended particle emissions measured on the biopolymer-treated trial plots were significantly reduced and ranged from 0.05 to 0.27 mg/m3 compared to the untreated control (4.5 to 39.2 mg/m3). The visual inspections and penetrometer tests supported these results. After day 8, rainfall-induced leaching of the biopolymers resulted in the rapid degradation of the treatments’ effectiveness. The results suggest that the treatments would have lasted longer under dry conditions. Thus, the field trials provide practical evidence that biopolymers can effectively mitigate dust emissions on exposed, undisturbed mine soils in the short term, making them a bio-based alternative to traditional dust suppressants, such as chloride salts or petroleum-based products.

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Section: Penetration Resistancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effectiveness of Protein and Polysaccharide Biopolymers as Dust Suppressants on Mine Soils: Large-Scale Field Trials

Sieger

Lottermoser

Freer

2023

Mining

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“…However, if left untreated, the weak surface of red sand will be subjected to fugitive dust emission [ 13 , 14 ]. Previous research already indicated the potential of polymer colloids in treating red sand dust erosion by constructing surface crusts with certain thickness and stiffness [ 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

“…Thus, this paper investigates the effect of synergistic aging on the dynamic viscosity and the dust control performance of red sand when applying unitary and binary colloids, to analyze whether the dynamic viscosity can still effectively predict the penetration resistance and dust control performance of red sand. The penetration resistance of formed crust is setup as the main mechanical properties to reflect the dust control performance for their stable consistency [ 14 , 20 , 28 ]. As shown in Figure 2 , both unitary colloid and binary colloids were investigated.…”

Section: Introductionmentioning

confidence: 99%

Effect of Synergistic Aging on Bauxite Residue Dust Reduction Performance via the Application of Colloids, an Orthogonal Design-Based Study

Ding

Wang

et al. 2021

Polymers

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The application of polymer colloids is a promising approach for bauxite residue dust pollution control. However, due to the existence of synergistic aging, the efficiency of colloid dynamic viscosity to predict the dust control performance of bauxite residue is unclear. Previous studies were also rarely performed under synergistic aging conditions. Thus, this paper investigates the relationship between colloids’ viscosity and dust control performance under synergistic aging modes. Results illustrated that the binary colloid achieved better dust control performance than unitary colloid for their higher viscosity and penetration resistance. For both unitary and binary colloid, higher viscosity results in better crust strength. A logarithmic relationship was found for viscosity and dust erosion resistance under unitary aging. However, Only the dynamic viscosity of colloids in solid-liquid two-phase conditions, rather than dissolved in deionized water, can effectively predict the dust control performance under synergistic aging conditions.

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“…Because of the adverse effects, appropriate treatment strategies for stabilizing mine tailings against erosion have received special attention in recent years. To date, a number of stabilization approaches have been tested in an effort to mitigate wind erosion, including the creation of a crust on the soil surface by adding chemical materials, the installation of wind barriers to minimize wind ow over the surface, and the establishment of a vegetative cover (Ding et al 2021, Tordoff et al 2000, Ye et al 2002). The e ciency and success of these strategies have been limited due to their temporary effectiveness, instability, time-consuming application, high cost, and adverse environmental impacts onsite/off-site throughout their life cycle.…”

Section: Introductionmentioning

confidence: 99%

Biostabilization of Gold Mine Tailings: Co-Inoculation of Cyanobacteria Under Sterile and Non-Sterile Conditions

Rezasoltani

Champagne

Mann

2021

Preprint

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Cyanobacterial crust formation has attracted attention for stabilizing erosion-susceptible soils in desert regions. However, limited information exists on its application in waste impoundments such as mine tailings. Identifying suitable inoculants with the ability to develop biocrusts in the more toxic conditions of mine tailings represents a challenge for exploiting this biotechnology for such applications. In this study, the performance of two nitrogen-fixing cyanobacteria (Anabaena sp. and Nostoc muscorum), individually and as a consortium, in creating biocrusts over gold mine tailings were investigated under sterile and non-sterile conditions. The results showed that Anabaena sp. and the co-inoculation of the species promoted higher synthesis of chlorophyll-a and total EPS compared to N. muscorum. The inoculated strains also exhibited different responses in the amount of the EPS fractions. The less soluble and more condensed tightly bound EPS represented a higher fraction of total EPS with co-inoculation and N. muscorum. With respect to wind erosion resistance and compressive strength of the biocrusts generated, co-inoculation showed better performance, followed by N. muscorum, while Anabaena sp. appeared to be less effective. The presence of indigenous microbial community within the tailings influenced the biostabilization performance of Anabaena sp., while the influence was insignificant under co-inoculation and N. muscorum. Overall, inoculating the cyanobacteria in a mixture with complementary traits (higher chlorophyll-a synthesis and total EPS secretion of Anabaena sp. vs. higher TB-EPS fraction and filamentous growth of N. muscorum) presented an effective strategy in the development of a resistant biocrust against wind erosion. With this inoculation strategy, the beneficial effects of the individual strains on biocrust formation could be combined, thus a comparatively stronger structure could be formed. Besides chlorophyll-a content, factors such as cyanobacteria morphology and EPS fractions would contribute to the biostabilization process. The results also suggested that sterilization of the tailings would influence the performance of cyanobacteria depending on the inoculant. Thus, the response of inoculants to other microbial communities should be considered prior to field-scale application.

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Characterization of red sand dust pollution control performance via static and dynamic laboratorial experiments when applying polymer stabilizers

Cited by 8 publications

References 30 publications

Effectiveness of Protein and Polysaccharide Biopolymers as Dust Suppressants on Mine Soils: Large-Scale Field Trials

Effectiveness of Protein and Polysaccharide Biopolymers as Dust Suppressants on Mine Soils: Large-Scale Field Trials

Effect of Synergistic Aging on Bauxite Residue Dust Reduction Performance via the Application of Colloids, an Orthogonal Design-Based Study

Biostabilization of Gold Mine Tailings: Co-Inoculation of Cyanobacteria Under Sterile and Non-Sterile Conditions

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