Simultaneous removal of lead and selenium through biomineralization as lead selenide by anaerobic granular sludge

2021 ◽  
pp. 126663
Author(s):  
Joyabrata Mal ◽  
Arindam Sinha Roy ◽  
Piet N.L. Lens
Keyword(s):  
Granular Sludge ◽  
Lead Selenide ◽  
Anaerobic Granular Sludge ◽  
Simultaneous Removal

Biosynthesis of CdSe nanoparticles by anaerobic granular sludge

2017 ◽  
Vol 4 (4) ◽  
pp. 824-833 ◽  
Author(s):  
Joyabrata Mal ◽  
Yarlagadda V. Nancharaiah ◽  
Santanu Bera ◽  
Neeraj Maheshwari ◽  
Eric D. van Hullebusch ◽  
...  
Keyword(s):  
Granular Sludge ◽  
Cdse Nanoparticles ◽  
Anaerobic Granular Sludge ◽  
Simultaneous Removal

Simultaneous removal of selenite and cadmium by combining bioremediation of environmentally toxic selenium-rich wastewater with biorecovery of Se as CdSe nanoparticles.

Toxicity of Sulfite and Cadmium to Anaerobic Granular Sludge

1994 ◽  
Vol 29 (4) ◽  
pp. 581-598
Author(s):  
C.F. Shew ◽  
N. Kosaric
Keyword(s):  
Granular Sludge ◽  
Upflow Anaerobic Sludge Blanket ◽  
Shock Load ◽  
Anaerobic Sludge ◽  
Anaerobic Granular Sludge ◽  
Scanning Electron Micrographs ◽  
Bacterial Growth Rate ◽  
Digestion Rate ◽  
Sulfate Reducing ◽  
Load Conditions

Abstract Toxicity of sulfite (Na2SO3) and cadmium (CdCl2) ions to anaerobic granular sludge was investigated in 1.2 litre bench-scale upflow anaerobic sludge blanket (UASB) reactors during process acclimation and shock load conditions. Minimal sulfite toxicity was observed under gradual and shock load conditions at sulfite concentrations of up to 1000 mg S/L if proper acclimation was allowed to occur. No long-term toxic effects were observed although the COD digestion rate was temporarily inhibited by shock load of sulfite. Scanning electron micrographs indicated that more sulfate-reducing bacteria were present in the granules developed in the reactors with sulfite supplement although rod-shaped Methanosaeta-like bacteria were still dominant. High bacterial growth rate was observed in the reactors which were supplied with the feed containing sulfite. The COD digestion rate was inhibited at a cadmium loading rate of 2.4 g Cd per day under both acclimation and shock load conditions. Acclimation did not seem to improve the bacteria to tolerate the toxicity of cadmium. The concentration of free cadmium was very low in the reactors under normal conditions, but increased rapidly when the COD digestion in the reactors ceased. The bacteria could not be reactivated after inhibited by cadmium. When reactors were operated at low specific COD loading rates, more inorganic precipitates were formed inside the granules which consequently settled faster.

scholarly journals Screening for electrical conductivity in anaerobic granular sludge from full-scale wastewater treatment reactors

2020 ◽  
Vol 159 ◽  
pp. 107575
Author(s):  
Leire Caizán-Juanarena ◽  
Annemiek ter Heijne ◽  
Jan Weijma ◽  
Doekle Yntema ◽  
Diego A. Suárez-Zuluaga ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Wastewater Treatment ◽  
Granular Sludge ◽  
Full Scale ◽  
Anaerobic Granular Sludge

Bioremediation of wastewaters with decabromodiphenyl ether by anaerobic granular sludge

2015 ◽  
Vol 128 ◽  
pp. 522-527 ◽  
Author(s):  
Shou-Qing Ni ◽  
Zhibin Wang ◽  
Lu Lv ◽  
Xueyou Liang ◽  
Longfei Ren ◽  
...  
Keyword(s):  
Granular Sludge ◽  
Anaerobic Granular Sludge ◽  
Decabromodiphenyl Ether
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