Conductive polyaniline hydrogel enhanced methane production from anaerobic wastewater treatment

2021 ◽  
Vol 581 ◽  
pp. 314-322 ◽  
Author(s):  
Na Zhou ◽  
Tong Wang ◽  
Suhao Chen ◽  
Qian Hu ◽  
Xiang Cheng ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Methane Production ◽  
Anaerobic Wastewater Treatment ◽  
Conductive Polyaniline

scholarly journals Model-based Control Strategies for Anaerobic Digestion Processes

BIOMATH ◽  
2019 ◽  
Vol 8 (2) ◽  
pp. 1907127 ◽  
Author(s):  
Neli Dimitrova ◽  
Mikhail Krastanov
Keyword(s):  
Wastewater Treatment ◽  
Anaerobic Digestion ◽  
Methane Production ◽  
Control Strategies ◽  
A Priori ◽  
Open Loop ◽  
Open Loop Control ◽  
Loop Control ◽  
Model Based Control ◽  
Anaerobic Wastewater Treatment

In this paper we consider a four-dimensional bioreactor model, describing an anaerobic wastewater treatment with methane production. Different control strategies for stabilizing the dynamics are presented and discussed. A general and practice-oriented bounded open-loop control is proposed, aimed to steer the model solutions towards an a priori given set in thephase plane.

Competition between methanogenesis and sulfidogenesis in anaerobic wastewater treatment

1998 ◽  
Vol 38 (8-9) ◽  
pp. 317-324 ◽  
Author(s):  
Gong-Ming Zhou ◽  
Herbert H. P. Fang
Keyword(s):  
Wastewater Treatment ◽  
Sulfate Reduction ◽  
Methane Production ◽  
Reduction Rate ◽  
Uasb Reactor ◽  
Sulfate Reduction Rate ◽  
Sulfate Concentration ◽  
Anaerobic Wastewater Treatment ◽  
Sulfate Reducing ◽  
Sulfate Removal

This study was conducted to investigate the methanogenic and sulfidogenic activities of biomass in a UASB reactor treating wastewater containing benzoate (680 mg l−1) and sulfate (increased from 1080 to 2680 mg l−1) at 37°C and 12 hours of hydraulic retention. Results showed that after 120 days of acclimation, sludge consistently removed 99.5% of benzoate regardless of increased sulfate concentrations. Sulfidogenesis gradually out-competed methanogenesis during the acclimation phase, as indicated by the increase of sulfate-reducing efficiency (up to 99%) accompanied by the decrease of methane production. Overall sulfate removal efficiency was limited after the reactor had reached its maximum sulfate reduction rate of 2.1 g S (l d−1). Further increasing sulfate concentration from 1080 mg l−1 to 2680 mg l−1 lowered the sulfate-reducing efficiency from 85% to 39%. Flow of available electrons toward sulfidogenesis increased with the decrease of benzoate concentration, and was only slightly affected by the sulfate concentration or the benzoate/SO42−-S ratio.

scholarly journals Conductive Polyaniline Enhanced Decolorization of Azo Dyes in Anaerobic Wastewater Treatment

2021 ◽  
Author(s):  
Yating Liao ◽  
◽  
Ying Wang ◽  
Lingfeng Ouyang ◽  
Yanlan Dong ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Azo Dyes ◽  
Anaerobic Wastewater Treatment ◽  
Conductive Polyaniline
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