Extracting copper and cobalt from non-ferrous residues by iron- and sulfur-oxidizing bacteria

2021 ◽  
Author(s):  
Jianxing Sun ◽  
Wenxian Liu ◽  
Ruichang Tang ◽  
Haina Cheng ◽  
Ronghui Liu ◽  
...  
Keyword(s):  
Sulfur Oxidizing ◽  
Sulfur Oxidizing Bacteria

Effects of activated carbon on treatment of photo-processing waste by sulfur-oxidizing bacteria

1997 ◽  
Vol 35 (7) ◽  
pp. 187-195 ◽  
Author(s):  
Binle Lin ◽  
K. Futono ◽  
A. Yokoi ◽  
M. Hosomi ◽  
A. Murakami
Keyword(s):  
Activated Carbon ◽  
Treatment Effectiveness ◽  
Environmental Concern ◽  
Type Systems ◽  
Continuous Treatment ◽  
Processing Waste ◽  
Treatment Technology ◽  
Adsorption Effect ◽  
Sulfur Oxidizing ◽  
Sulfur Oxidizing Bacteria

Establishing economic treatment technology for safe disposal of photo-processing waste (PW) has most recently become an urgent environmental concern. This paper describes a new biological treatment process for PW using sulfur-oxidizing bacteria (SOB) in conjunction with activated carbon (AC). Batch-type acclimation and adsorption experiments using SOB/PAC, SOB/PNAC, and SOB reactor type systems demonstrated that AC effectively adsorbs the toxic/refractory compounds which inhibit thiosulfate oxidization of SOB in PW. Thus, to further clarify the effect of AC, we performed a long-term (≈ 160 d) continuous-treatment experiment on 4- to 8-times dilution of PW using a SOB/GAC system which simulated a typical wastewater treatment system based on an aerobic activated sludge process that primarily uses acclimated SOB. The thiosulfate load and hydraulic retention time (HRT) were fixed during treatment such that they ranged from 0.8-3.7 kg S2O32-/l/d and 7.7-1.9 d, respectively. As expected, continuous treatment led to breakthrough of the adsorption effect of GAC. Renewing the GAC and continuing treatment for about 10 d demonstrated good treatment effectiveness.

scholarly journals Sulfur bacteria promote dissolution of authigenic carbonates at marine methane seeps

2021 ◽  
Author(s):  
Dalton J. Leprich ◽  
Beverly E. Flood ◽  
Peter R. Schroedl ◽  
Elizabeth Ricci ◽  
Jeffery J. Marlow ◽  
...  
Keyword(s):  
Carbonate Rocks ◽  
Sulfur Oxidation ◽  
Methane Seeps ◽  
Etch Pits ◽  
Active Dissolution ◽  
Authigenic Carbonates ◽  
Sulfur Bacteria ◽  
Sulfur Oxidizing ◽  
Sulfur Oxidizing Bacteria

AbstractCarbonate rocks at marine methane seeps are commonly colonized by sulfur-oxidizing bacteria that co-occur with etch pits that suggest active dissolution. We show that sulfur-oxidizing bacteria are abundant on the surface of an exemplar seep carbonate collected from Del Mar East Methane Seep Field, USA. We then used bioreactors containing aragonite mineral coupons that simulate certain seep conditions to investigate plausible in situ rates of carbonate dissolution associated with sulfur-oxidizing bacteria. Bioreactors inoculated with a sulfur-oxidizing bacterial strain, Celeribacter baekdonensis LH4, growing on aragonite coupons induced dissolution rates in sulfidic, heterotrophic, and abiotic conditions of 1773.97 (±324.35), 152.81 (±123.27), and 272.99 (±249.96) μmol CaCO3 • cm−2 • yr−1, respectively. Steep gradients in pH were also measured within carbonate-attached biofilms using pH-sensitive fluorophores. Together, these results show that the production of acidic microenvironments in biofilms of sulfur-oxidizing bacteria are capable of dissolving carbonate rocks, even under well-buffered marine conditions. Our results support the hypothesis that authigenic carbonate rock dissolution driven by lithotrophic sulfur-oxidation constitutes a previously unknown carbon flux from the rock reservoir to the ocean and atmosphere.

scholarly journals A direct contact bioassay using sulfur-oxidizing bacteria (SOB) for toxicity assessment of contaminated field soils

Chemosphere ◽  
2021 ◽  
pp. 131599
Author(s):  
Ebenezer Ashun ◽  
Umair Ali Toor ◽  
Hyuck Soo Kim ◽  
Kwon-Rae Kim ◽  
Se Jin Park ◽  
...  
Keyword(s):  
Direct Contact ◽  
Toxicity Assessment ◽  
Field Soils ◽  
Sulfur Oxidizing ◽  
Contact Bioassay ◽  
Contaminated Field ◽  
Sulfur Oxidizing Bacteria

Granulation of sulfur-oxidizing bacteria for autotrophic denitrification

2016 ◽  
Vol 104 ◽  
pp. 507-519 ◽  
Author(s):  
Weiming Yang ◽  
Hui Lu ◽  
Samir K. Khanal ◽  
Qing Zhao ◽  
Liao Meng ◽  
...  
Keyword(s):  
Autotrophic Denitrification ◽  
Sulfur Oxidizing ◽  
Sulfur Oxidizing Bacteria

scholarly journals Lipids of sulfate-reducing bacteria and sulfur-oxidizing bacteria found in the Dongsheng uranium deposit

2012 ◽  
Vol 57 (11) ◽  
pp. 1311-1319 ◽  
Author(s):  
Lei Jiang ◽  
ChunFang Cai ◽  
YongDong Zhang ◽  
ShengYi Mao ◽  
YongGe Sun ◽  
...  
Keyword(s):  
Uranium Deposit ◽  
Sulfate Reducing Bacteria ◽  
Sulfate Reducing ◽  
Sulfur Oxidizing ◽  
Reducing Bacteria ◽  
Sulfur Oxidizing Bacteria
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