Hydrogen sulphide removal from landfill gas

Panza, D; Belgıorno, Vincenzo

doi:10.1016/j.psep.2010.07.003

Cited by 51 publications

(25 citation statements)

References 8 publications

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“…Gas purification by alkaline chemisorptions has already been implemented in reactors with static mixers, countercurrent packed absorbers or countercurrent spray scrubber as well [4][5][6][7][8][9][10]. Application of a Jet reactor seems to be an ideal solution.…”

Section: Introductionmentioning

confidence: 99%

Benefits of Jet Reactor Application in Alkaline Gas Purification

Molnár

Rippel-Pethő

Horváth

et al. 2016

Period. Polytech. Chem. Eng.

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Section: Introductionmentioning

confidence: 99%

Benefits of Jet Reactor Application in Alkaline Gas Purification

Molnár

Rippel-Pethő

Horváth

et al. 2016

Period. Polytech. Chem. Eng.

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“…Of the technologies for odor control, chemical wet scrubber (Gaur et al, 2010;Panza and Belgiorno, 2010) and biological treatment including biofiltration and biotrickling filters were widely investigated and used (Melse and Van der Werf 2005;Popat and Deshusses, 2008;Chou and Li, 2010;Lopez et al, 2011). However, single scrubber technologies typically focused on certain compounds, and the degrees of decontamination depended largely on sorption mechanisms, types of solvents, pH, equilibrium time, etc.…”

Section: Introductionmentioning

confidence: 99%

“…However, single scrubber technologies typically focused on certain compounds, and the degrees of decontamination depended largely on sorption mechanisms, types of solvents, pH, equilibrium time, etc. (Ajhar et al, 2010;Gaur et al, 2010;Panza and Belgiorno, 2010). The efficacy of biological treatment for odorous gases was controlled by mass transfer and factors including packing materials, bed temperature, pH control, pressure drop, bed clogging, etc.…”

Section: Introductionmentioning

confidence: 99%

Removal of Odor-Causing Substances by a Pilot-Scale Oxidative-Reductive Scrubbing Tower System

Chen

Lin

2013

Aerosol Air Qual. Res.

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Composting is a proven technology for releasing the economic value of kitchen wastes. Following our previous efforts to expand and modify a novel, pilot-scale two-stage oxidative-reductive treatment technology for future implementation as a full-scale tower system, the objective of this work was to examine this scrubber tower system using the optimal operational scenario observed in our previous bench-scale experiments and with two different scrubbing liquid flow rates to allow for its subsequent application at full-scale. As the pH values ranged from 4.0 to 6.0 and from 10.0 to 11.5 in the acidic and alkaline scrubbers, respectively, and the total chlorine concentration ranged from 10 to 95 mg/L as Cl in the acidic scrubber, odor control treatment efficiencies of more than 95% were observed using this treatment technology. A slightly enhanced performance was obtained when a lower scrubbing liquid flow rate being employed, possibly due to the additional contact time between the scrubbing liquids and odor-causing substances in the composting gases. Although a higher scrubbing liquid flow rate increased the possibility of leaking chlorine into the treated gases, which affected the performance of this technology, stronger pH variation and chlorine consumption at the lower scrubbing liquid flow rate indicated the importance of controlling sufficient levels of scrubbing liquid in the system to maintain the treatment efficiency. The results provided insights regarding the use of this treatment technology for minimizing the adverse impacts associated with kitchen waste composting, including the emission of substances that may cause health and/or environmental concerns.

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“…Common control technologies include combustion (Ye et al, 2012) and non-combustion technologies mostly using chemical reaction and purification to treat air pollutants (Hsieh et al, 2011;Latif et al, 2011;Lo et al, 2011;Perng et al, 2011). As odorous compounds being the target pollutants for air treatment, absorption/adsorption scrubbing (Gaur et al, 2010;Panza and Belgiorno, 2010) and biological treatment including biofiltration and biotrickling filters (Melse and Van der Werf, 2005;Popat and Deshusses, 2008;Chou and Li, 2010) were widely used. However, absorption/ adsorption technologies typically focused on certain compounds, and the degrees of decontamination depended largely on sorption mechanisms, types of solvents, the pH, equilibrium time, etc.…”

Section: Introductionmentioning

confidence: 99%

“…However, absorption/ adsorption technologies typically focused on certain compounds, and the degrees of decontamination depended largely on sorption mechanisms, types of solvents, the pH, equilibrium time, etc. (Ajhar et al, 2010;Gaur et al, 2010;Panza and Belgiorno, 2010). Biotrickling filtration and biofiltration are effective, simple, and low cost technologies with low pressure drop.…”

Section: Introductionmentioning

confidence: 99%

A Novel Two-Stage Scrubbing Technology for Odor Control of Kitchen Waste Composting

Chen

Lin

2012

Aerosol Air Qual. Res.

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The odors associated with kitchen waste composting for recycle and reuse, which arise as a consequence of the volatilization of compounds contained within such waste and those formed during decomposition, are a key concern with regard to sustainable kitchen waste treatment and disposal. The aim of this study was to investigate the main composition of the odorous gases from kitchen waste composting, and to develop a novel two-stage oxidative-reductive wet scrubbing technology for effective control of these. The results indicate that the odor concentrations of the kitchen waste composting gases are strongly related to the concentrations of sulfur-containing compounds, hydrogen sulfide and mercaptans. In the two-stage scrubbing technology for odor control, sodium hypochlorite and sodium hydroxide or sodium bisulfite were used as the scrubbing liquids in the acidic and alkaline scrubbers, respectively. The pH levels of the acidic and alkaline scrubbers, the types and concentrations of chlorine in the acidic scrubber, and the type of alkaline scrubbing liquid used, were the main factors that affected the efficiency of this technology for odor removal. Sodium bisulfite solution was used in the alkaline scrubber, with a moderate ranges of total and free chlorine concentrations (150-200 mg/L as Cl 2 ) and relatively high pH values (e.g., pH 9.5-10), and this novel technology was successfully used to treat the odors produced by the kitchen waste composting process.

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Hydrogen sulphide removal from landfill gas

Cited by 51 publications

References 8 publications

Benefits of Jet Reactor Application in Alkaline Gas Purification

Benefits of Jet Reactor Application in Alkaline Gas Purification

Removal of Odor-Causing Substances by a Pilot-Scale Oxidative-Reductive Scrubbing Tower System

A Novel Two-Stage Scrubbing Technology for Odor Control of Kitchen Waste Composting

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