Effect of sulfide on morphology and particle size of biologically produced elemental sulfur from industrial desulfurization reactors

Mol, Annemerel R.; Langeveld, Lourens. J. van; Weijden, Renata D. van der; Klok, Johannes B.M.; Buisman, Cees J.N.

doi:10.1016/j.jhazmat.2021.127696

Cited by 10 publications

(4 citation statements)

References 30 publications

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“…Moreover, the size distribution of bio-S 0 particles was relatively centralized with Dv (25), Dv (50), and Dv (75) values of 6.390, 10.392, and 14.996 μm, respectively (Figure E). The dominant particle size was approximately 10 μm, which was basically consistent with that of bio-S 0 in other biological desulfurization systems under haloalkaline conditions. , …”

Section: Resultssupporting

confidence: 82%

“…An appropriate amount of sulfur suspension was taken from the bioreactor to separate the S 0 particle from the microbial cells and soluble salts. 14 The suspension was first sonicated at 1.0 W/cm 2 for 2 s every 5 s 6 times and then centrifuged at 1500 rpm for 30 s. The solid part at the bottom was collected and resuspended in deionized water. The procedures were repeated 5 times to obtain the bio-S 0 samples.…”

Section: Separation Of Bio-smentioning

confidence: 99%

“…Biogenic sulfur (bio-S 0 ) refers to the S 0 produced by microbial metabolism, which is often observed in the biological desulfurization of H 2 S-rich biogas, natural gas, and sulfide-containing wastewater. , Bio-S 0 is usually presented as a micron-sized particle and can be easily separated by gravity settling. , Therefore, it is possible to be recycled as a valuable resource. Lots of research studies have reported that bio-S 0 could lead to better pollutant removal performance.…”

Section: Introductionmentioning

confidence: 99%

“…11,12 Bio-S 0 is usually presented as a micron-sized particle and can be easily separated by gravity settling. 13,14 Therefore, it is possible to be recycled as a valuable resource. Lots of research studies have reported that bio-S 0 could lead to better pollutant removal performance.…”

Section: Introductionmentioning

confidence: 99%

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Insights into the Superior Bioavailability of Biogenic Sulfur from the View of Its Unique Properties: The Key Role of Trace Organic Substances

Zhu

Pan

et al. 2023

Environ. Sci. Technol.

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Elemental sulfur (S0) is widely utilized in environmental pollution control, while its low bioavailability has become a bottleneck for S0-based biotechnologies. Biogenic sulfur (bio-S0) has been demonstrated to have superior bioavailability, while little is known about its mechanisms thus far. This study investigated the bioavailability and relevant properties of bio-S0 based on the denitrifying activity of Thiobacillus denitrificans with chemical sulfur (chem-S0) as the control. It was found that the conversion rate and removal efficiency of nitrate in the bio-S0 system were 2.23 and 2.04 times those of the chem-S0 system. Bio-S0 was not pure orthorhombic sulfur [S: 96.88 ± 0.25% (w/w)]. Trace organic substances detected on the bio-S0 surface were revealed to contribute to its hydrophilicity, resulting in better dispersibility in the aqueous liquid. In addition, the adhesion force of T. denitrificans on bio-S0 was 1.54 times that of chem-S0, endowing a higher bacterial adhesion efficiency on the sulfur particle. The weaker intermolecular binding force due to the low crystallinity of bio-S0 led to enhanced cellular uptake by attached bacteria. The mechanisms for the superior bioavailability of bio-S0 were further proposed. This study provides a comprehensive view of the superior bioavailability of bio-S0 and is beneficial to developing high-quality sulfur resources.

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Section: Resultssupporting

confidence: 82%

Section: Separation Of Bio-smentioning

confidence: 99%