Removal of High Phenol Concentrations with Adapted Activated Sludge in Suspended Form and Entrapped in Calcium Alginate /Cross-Linked Poly(N-vinyl pyrrolidone) Hydrogels

2006 ◽  
Vol 22 (6) ◽  
pp. 1552-1559
Author(s):  
M. Hernandez-Esparza ◽  
M.C. Doria-Serrano ◽  
G. Acero-Salinas ◽  
F.A. Ruiz-Trevino
Keyword(s):  
Activated Sludge ◽  
Calcium Alginate ◽  
Vinyl Pyrrolidone ◽  
Suspended Form

Removal of High Phenol Concentrations with Adapted Activated Sludge in Suspended Form and Entrapped in Calcium Alginate/Cross-Linked Poly(N-vinyl pyrrolidone) Hydrogels

2006 ◽  
Vol 22 (6) ◽  
pp. 1552-1559 ◽  
Author(s):  
Margarita Hernández-Esparza ◽  
M. Carmen Doria-Serrano ◽  
Gabriela Acero-Salinas ◽  
F. Alberto Ruiz-Treviño
Keyword(s):  
Activated Sludge ◽  
Calcium Alginate ◽  
Vinyl Pyrrolidone ◽  
Suspended Form

Poly(N-vinyl pyrrolidone)−Calcium Alginate (PVP−Ca-alg) Composite Hydrogels:  Physical Properties and Activated Sludge Immobilization for Wastewater Treatment

2002 ◽  
Vol 41 (13) ◽  
pp. 3163-3168 ◽  
Author(s):  
M. C. Doria-Serrano ◽  
G. Riva-Palacio ◽  
F. A. Ruiz-Treviño ◽  
M. Hernández-Esparza
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Physical Properties ◽  
Calcium Alginate ◽  
Vinyl Pyrrolidone ◽  
Composite Hydrogels

Physical Characteristics of Poly(vinyl alcohol) and Calcium Alginate Hydrogels for the Immobilization of Activated Sludge

2001 ◽  
Vol 2 (2) ◽  
pp. 568-574 ◽  
Author(s):  
M. C. Doria-Serrano ◽  
F. A. Ruiz-Treviño ◽  
C. Rios-Arciga ◽  
M. Hernández-Esparza ◽  
P. Santiago
Keyword(s):  
Activated Sludge ◽  
Vinyl Alcohol ◽  
Calcium Alginate ◽  
Physical Characteristics ◽  
Poly Vinyl Alcohol ◽  
Alginate Hydrogels

Biosorption of copper by calcium alginate from excess activated sludge

2009 ◽  
Vol 30 (13) ◽  
pp. 1461-1467 ◽  
Author(s):  
Hai Ling Zhang ◽  
Yue Mei Lin ◽  
Lin Wang
Keyword(s):  
Activated Sludge ◽  
Calcium Alginate

scholarly journals Biodegradation of Quinoline by Hydrogel Beads of Activated Sludge in the Air-Lift Bioreactor

2018 ◽  
Vol 7 (4.37) ◽  
pp. 53 ◽  
Author(s):  
Haneen Ahmed Khudhair ◽  
. .
Keyword(s):  
Activated Sludge ◽  
Calcium Alginate ◽  
Biomass Concentration ◽  
Optimal Conditions ◽  
Alginate Hydrogel ◽  
Microbial Cells ◽  
Hydrogel Bead ◽  
Hydrogel Beads ◽  
Air Lift ◽  
Ca Alginate

Quinoline is a nitrogen heterocyclic compound (NHC) with a molecular formula of C9H7N. Microbial degradation of quinoline occurs under both aerobic and anaerobic conditions. In this study, the aerobic biodegradation of quinoline was investigated with activated sludge which was taken from a municipal sewage wastewater treatment plant in the air-lift bioreactor (ALBR).The activated sludge was entrapped in poly-vinyl-alcohol-calcium alginate (PVA-Ca alginate) hydrogel beads. The optimal conditions for microbial cells entrapment, such as Ca-alginate concentration, biomass concentration in the hydrogel bead and bead size, were determined with concerning to improve the quinoline degradation rate. Also, the initial quinoline concentration was determined. The optimum temperature and initial pH for quinoline degradation were 30°C and pH 7–8, respectively. During the biodegradation process, the culture broth became yellow and brown in turn, which indicated that several intermediates were generated. The results showed that the diversity of microbial cells improves and accelerates the quinoline biodegradation. The repeated use of the hydrogel beads for quinoline degradation was performed and the results revealed that the beads were active and intact up to 4 successive cycles without breakage or loss their stability in the continuous mode. Thus, (PVA-Ca alginate) hydrogel beads have great potential to be a matrix for the cell immobilization in quinoline biodegradation. The various initial concentrations of quinoline (50, 100, 250, and 500mg/L) were completely degraded in batch-mode experiments; under optimal conditions: PVA conc., 80%w/v; calcium alginate conc., 20%w/v; initial biomass concentration the hydrogel bead, 3mL / 10 mL of gel solution; and the hydrogel bead size, about 3mm in diameter, at different time intervals (4, 6, 10, and 14h), respectively.   

Reduction of Excess Activated Sludge by Controlling the Motion of Ferrite Particles

2014 ◽  
Vol 134 (4) ◽  
pp. 475-476
Author(s):  
Mahmudul Kabir ◽  
Tatsuya Chiba ◽  
Masafumi Suzuki ◽  
Noboru Yoshimura
Keyword(s):  
Activated Sludge
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