Limonene removal using a horizontal-flow anaerobic immobilized biomass bioreactor

2021 ◽  
Vol 43 ◽  
pp. 102225
Author(s):  
Brenda Clara Gomes Rodrigues ◽  
Bruna Sampaio de Mello ◽  
Bianca Ferreira da Silva ◽  
Eloisa Pozzi ◽  
Paulo Clairmont Feitosa de Lima Gomes ◽  
...  
Keyword(s):  
Horizontal Flow ◽  
Immobilized Biomass

Treatment of Domestic Sewage in Horizontal-Flow Anaerobic Immobilized Biomass (HAIB) Reactor

2000 ◽  
Vol 21 (10) ◽  
pp. 1139-1145 ◽  
Author(s):  
M. Zaiat ◽  
F. Hermes Passig ◽  
E. Foresti
Keyword(s):  
Domestic Sewage ◽  
Horizontal Flow ◽  
Immobilized Biomass

Biofilm adaptation to sulfate reduction in anaerobic immobilized biomass reactors sujected to different COD/sulfate ratios

2006 ◽  
Vol 54 (2) ◽  
pp. 119-126 ◽  
Author(s):  
M.H.R.Z. Damianovic ◽  
I.K. Sakamoto ◽  
E. Foresti
Keyword(s):  
Molecular Biology ◽  
Sulfate Reduction ◽  
Polyurethane Foam ◽  
Horizontal Flow ◽  
Support Materials ◽  
Sulfate Reducing ◽  
Reduction Efficiency ◽  
Immobilized Biomass ◽  
High Sulfate ◽  
Reducing Bacteria

Various aspects of biofilm adaptation to sulfate reduction in horizontal-flow anaerobic immobilized biomass (HAIB) reactors subjected to increasing sulfate concentrations and different COD/sulfate ratios are presented and discussed. Four bench-scale HAIB reactors filled with vegetal carbon (R1 and R2) and polyurethane foam matrices (R3 and R4) were utilized. Influent sulfate concentrations ranging from 500 to 3000 mg/L were applied at COD/sulfate ratios ranging from 5.0 to 1.7. Reactors R1 and R4 were operated with higher sulfate loads than those applied to R2 and R3. For the same COD/sulfate ratio, the highest sulfate reduction efficiency (∼80%) was displayed by the vegetal carbon reactor (R2) subjected to low sulfate loads. According to the results of our molecular biology analyses, the different support materials provided different biomass colonization conditions. The lowest diversity of sulfate-reducing bacteria was found in the HAIB filled with polyurethane foam matrices operating with high sulfate loads.

Phenol degradation in horizontal-flow anaerobic immobilized biomass (HAIB) reactor under mesophilic conditions

2001 ◽  
Vol 44 (4) ◽  
pp. 167-174 ◽  
Author(s):  
R. M.L. Bolaños ◽  
M. B.A. Varesche ◽  
M. Zaiat ◽  
E. Foresti
Keyword(s):  
Removal Efficiency ◽  
Phenol Degradation ◽  
Oxygen Demand ◽  
Operating Conditions ◽  
Cod Removal ◽  
Horizontal Flow ◽  
Anaerobic Sludge ◽  
Cod Removal Efficiency ◽  
Immobilized Biomass ◽  
Potential Use

A bench-scale horizontal-flow anaerobic immobilized biomass (HAIB) reactor was assayed aiming to verify its potential use for phenol degradation. The HAIB reactor consisted of a bore-silicate tube (100 cm long; 5.04 cm diameter) filled with polyurethane foam matrices containing immobilized anaerobic sludge. Before being subjected to phenol, the reactor was fed with synthetic substrate at the influent chemical oxygen demand (COD) of 1,028 mg.l−1 achieving 98% of COD removal efficiency. Thereafter, phenol as the sole carbon source was added under step-increasing concentrations from 50 to 1,200 mg.l−1. Phenol degradation was evaluated by gas chromatographic analysis of influent and effluent samples. Process monitoring included determinations of pH, volatile acids, alkalinity and COD. The HAIB reactor was operated at a constant hydraulic detention time (HDT) of 12 hours. After 33 days with 50 mg/l of phenol in the influent, the reactor achieved 98% of COD removal efficiency. Successful phenol degradation (efficiency removal of 99%) occurred for influent concentrations of 100, 300, 600, 900 and 1,200 mg.l−1 after 148, 58, 47, 29 and 7 days, respectively. The predominance of Methanosaeta-like, rods and methanogenic cocci could be observed in all the operating conditions, besides the presence of phenol oxidizing microorganisms as irregular rods. The results indicate that phenol degradation at very high rates can be accomplished in HAIB reactors containing acclimatized biomass.

scholarly journals Pentachlorophenol (PCP) dechlorination in horizontal-flow anaerobic immobilized biomass (HAIB) reactors

2009 ◽  
Vol 100 (19) ◽  
pp. 4361-4367 ◽  
Author(s):  
M.H.R.Z. Damianovic ◽  
E.M. Moraes ◽  
M. Zaiat ◽  
E. Foresti
Keyword(s):  
Horizontal Flow ◽  
Immobilized Biomass

scholarly journals Application of horizontal-flow anaerobic immobilized biomass reactor for bioremediation of acid mine drainage

2015 ◽  
Vol 14 (3) ◽  
pp. 399-410 ◽  
Author(s):  
R. P. Rodriguez ◽  
D. V. Vich ◽  
M. L. Garcia ◽  
M. B. A. Varesche ◽  
M. Zaiat
Keyword(s):  
Sulfate Reduction ◽  
Mine Drainage ◽  
Low Cost ◽  
Mining Industry ◽  
Oxygen Demand ◽  
Horizontal Flow ◽  
Sulfate Removal ◽  
Effluent Recirculation ◽  
Initial Ph ◽  
Immobilized Biomass

The production of low-pH effluent with sulfate and metals is one of the biggest environmental concerns in the mining industry. The biological process for sulfate reduction has the potential to become a low-cost solution that enables the recovery of interesting compounds. The present study analyzed such a process in a horizontal-flow anaerobic immobilized biomass (HAIB) reactor, employing ethanol as the carbon and energy source. Results showed that a maximal efficiency in the removal of sulfate and ethanol could only be obtained by reducing the applied sulfate load (225.1 ± 38 g m−3 d−1). This strategy led to over 75% of chemical oxygen demand (COD) and sulfate removal. Among the COD/SO42− studied ratios, 0.67 showed the most promising performance. The effluent's pH has naturally remained between 6.8 and 7.0 and the complete oxidation of the organic matter has been observed. Corrections of the influent pH or effluent recirculation did not show any significant effect on the COD and sulfate removal efficiency. Species closely related to strains of Clostridium sp. and species of Acidaminobacter hydrogenomorfans and Fusibacter paucivorans that can be related to the process of sulfate reduction were found in the HAIB reactors when the initial pH was 5 and the COD/SO42− ratio increased to 1.0.

Continuous Anaerobic Treatment of the Aqueous Phase of Hydrothermal Liquefaction from Spirulina Using a Horizontal-Flow Anaerobic Immobilized Biomass (HAIB) Reactor

2021 ◽  
Vol 232 (3) ◽  
Author(s):  
Beatriz Egerland Bueno ◽  
Diana Quispe-Arpasi ◽  
Laís Américo Soares ◽  
Isabel Kimiko Sakamoto ◽  
Maria Bernadete Amancio Varesche ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Anaerobic Treatment ◽  
Hydrothermal Liquefaction ◽  
Horizontal Flow ◽  
Immobilized Biomass

BTEX and ethanol removal in horizontal-flow anaerobic immobilized biomass reactor, under denitrifying condition

2006 ◽  
Vol 41 (6) ◽  
pp. 1391-1400 ◽  
Author(s):  
Valquiria Ribeiro Gusmão ◽  
Tiago Henrique Martins ◽  
Fábio Alexandre Chinalia ◽  
Isabel Kimiko Sakamoto ◽  
Otávio HenriqueThiemann ◽  
...  
Keyword(s):  
Horizontal Flow ◽  
Immobilized Biomass ◽  
Ethanol Removal
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