A combined upflow anaerobic sludge bed, aerobic, and anoxic fixed-bed reactor system for removing tetramethylammonium hydroxide and nitrogen from light-emitting diode wastewater

Experiments of biomass char combustion in 10%O2/90%CO2, 21%O2/79%CO2, 10%O2/90%N2 and 21%O2/79%N2 atmospheres were performed in the fixed-bed reactor system at the temperature of 800°C-1200°C. The results show that at the same temperature, NO emission is higher in O2/N2 atmosphere than that in O2/CO2 atmosphere. The higher the O2 concentration is, the higher the NO yield is. As the temperature rises, the NO yield rises at first and then decreases at the same O2 concentration and atmosphere.

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Hydrogen production via catalytic pyrolysis of biomass in a two-stage fixed bed reactor system

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2014.06.158 ◽

2014 ◽

Vol 39 (25) ◽

pp. 13128-13135 ◽

Cited By ~ 38

Author(s):

Shaomin Liu ◽

Jinglin Zhu ◽

Mingqiang Chen ◽

Wenping Xin ◽

Zhonglian Yang ◽

...

Keyword(s):

Hydrogen Production ◽

Catalytic Pyrolysis ◽

Fixed Bed ◽

Reactor System ◽

Fixed Bed Reactor ◽

Two Stage ◽

Pyrolysis Of Biomass

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Pilot plant studies on fixed bed reactor system for biomethanation of distillery spent wash

International Journal of Environmental Studies ◽

10.1080/00207239208710748 ◽

1992 ◽

Vol 41 (1-2) ◽

pp. 87-107 ◽

Cited By ~ 4

Author(s):

T. Nandy ◽

S. N. Kaul ◽

P. P. Pathe ◽

C. V. Deshpande ◽

R. A. Daryapurkar

Keyword(s):

Pilot Plant ◽

Fixed Bed ◽

Reactor System ◽

Fixed Bed Reactor ◽

Spent Wash ◽

Distillery Spent Wash

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Start-up of anaerobic reactors for slaughterhouse wastewater treatment

Engenharia Agrícola ◽

10.1590/1809-4430-eng.agric.v35n2p331-339/2015 ◽

2015 ◽

Vol 35 (2) ◽

pp. 331-339 ◽

Cited By ~ 1

Author(s):

RONALDO FIA ◽

ERLON L. PEREIRA ◽

FÁTIMA R. L. FIA ◽

DÉBORA G. EMBOABA ◽

EMANUEL M. GOMES

Keyword(s):

Wastewater Treatment ◽

Fixed Bed ◽

Fixed Bed Reactor ◽

Upflow Anaerobic Sludge Blanket ◽

Organic Loading Rate ◽

Anaerobic Sludge ◽

Stable Operation ◽

Slaughterhouse Wastewater ◽

Start Up ◽

Bicarbonate Alkalinity

This study aimed to evaluate the start-up of a horizontal anaerobic fixed bed reactor (HAFBR) followed by an upflow anaerobic sludge blanket (UASB) for the slaughterhouse wastewater treatment. HAFBR was filled with bamboo rings and had 1.2 m in length, 0.10 m in diameter and volume of 7.5 L. The UASB had the volume of 15 L. The HAFBR and UASB operated at organic loading rate and hydraulic retention time average of 8.46 and 3.77 kg m-3 d-1 of COD and 0.53 and 0.98 days, respectively. During 150 days of monitoring system it was found pH 6.8, relatively high values of bicarbonate alkalinity (> 1000 mg L-1) and reduced values of volatile acids (70 to 150 mg L-1), which afforded average removal efficiencies of COD total and total suspended solids of the order of 31 and 23% in HAFBR and 79% and 63% in UASB. It can be concluded that the generation and consumption of bicarbonate alkalinity and total volatile acids, thereby maintaining the pH during the study indicated stable operation of the reactors. The COD removal in the reactors was satisfactory especially when it considers that the assessment was conducted in a period of adaptation of organisms to the effluent and also the high organic load applied during this period.

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