Biosorption of a Sulfur Dye from Aqueous Solutions by Dried Acid-Pretreated Activated Sludge

2014 ◽  
Keyword(s):  
Aqueous Solutions ◽  
Activated Sludge ◽  
Sulfur Dye

BIOSORPTION OF ZINC FROM AQUEOUS SOLUTIONS USING DRIED ACTIVATED SLUDGE

2012 ◽  
Vol 11 (4) ◽  
pp. 857-865 ◽  
Author(s):  
Ghasem Najafpour Darzi ◽  
Reza Katal ◽  
Hossein Zare ◽  
Hooman Taher Rahmati
Keyword(s):  
Aqueous Solutions ◽  
Activated Sludge

Biosorption of cadmium(II) and lead(II) ions from aqueous solutions onto dried activated sludge

2006 ◽  
Vol 18 (5) ◽  
pp. 840-844 ◽  
Author(s):  
Xue-jiang WANG ◽  
Si-qing XIA ◽  
Ling CHEN ◽  
Jian-fu ZHAO ◽  
Jean-marc CHOVELON ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Activated Sludge

Biosorption of Cu(II) and Pb(II) from aqueous solutions by dried activated sludge

2006 ◽  
Vol 19 (9) ◽  
pp. 968-971 ◽  
Author(s):  
Xuejiang Wang ◽  
Ling Chen ◽  
Siqing Xia ◽  
Jianfu Zhao ◽  
Jean-Marc Chovelon ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Activated Sludge

scholarly journals Production of a bioflocculant by using activated sludge and its application in Pb(II) removal from aqueous solution

2020 ◽  
Vol 18 (1) ◽  
pp. 333-338 ◽  
Author(s):  
Zibo Yan ◽  
Li Peng ◽  
Miao Deng ◽  
Jinhui Lin
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Activated Sludge ◽  
Raw Materials ◽  
Fermentation Broth ◽  
Optimal Conditions ◽  
Protein Backbone ◽  
Pre Treatment

AbstractIn this study, the characteristics of a bioflocculant produced by using activated sludge as raw materials were investigated. The performance of this bioflocculant in the removal of Pb(II) from aqueous solution and the corresponding mechanisms were determined as well. After cultivating a bioflocculant-producing strain in an alkaline thermal pre-treatment sludge for 60 h, approximately 4.45 g of bioflocculant containing a protein backbone was harvested from 1 L of fermentation broth. This bioflocculant can remove 98.5% of Pb(II) from aqueous solutions under optimal conditions, which include a bioflocculant dosage of 6 mg/L and a CaCl2 concentration of 70 mg/L at a pH of 6.5.

Effect of Photodegradated Quinoline Aqueous Solutions on Enzyme Activities in Activated Sludge

2011 ◽  
Vol 374-377 ◽  
pp. 1025-1030
Author(s):  
Sui Yi Zhu ◽  
Ming Xin Huo ◽  
Kang Zhou ◽  
Jian Wang ◽  
Xia Yang
Keyword(s):  
Aqueous Solution ◽  
Enzyme Activity ◽  
Reaction Time ◽  
Aqueous Solutions ◽  
Activated Sludge ◽  
Enzyme Activities ◽  
Urease Activity ◽  
Glucose Medium ◽  
Pretreatment Time ◽  
Optimal Reaction

Synthesized wastewater containing quinoline photocatalytic oxidized at 0, 30 and 60 min respectively were applied in flask cultivation of activated sludge to evaluate the changes of activities of dehydrogenase, protease and urease in activated sludge with reference is glucose. The experiment results showed that quinoline aqueous solution after photodegradation of 60 min appeared to inconspicuous influence on the activities of dehydrogenase and protease, while after photodegradation of 0 min or 30 min the effluents presented obviously inhabitation. However, the urease activity cultured in all photodegradated quinoline solutions was higher than that in glucose medium due to the effect of C-N bond induction. Under the tested conditions, the optimal pretreatment time of photocatalysis system was observed at 60 minutes, which suggested that enzyme activity in activated sludge was benefited to investigate the biodegradability of wastewater for evaluating the optimal reaction time for photocatalytic pretreatment system.

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