Mass balance of mercury in a pilot scale mercury recovery plant using thermal roasting technology

2020 ◽  
Vol 11 (5) ◽  
pp. 886-893
Author(s):  
Eun-Song Lee ◽  
Seung-Ki Back ◽  
A.H.M. Mojammal ◽  
Yong-Chil Seo ◽  
Ha-Na Jang
Keyword(s):  
Mass Balance ◽  
Pilot Scale ◽  
Recovery Plant ◽  
Mercury Recovery

Hydrolysis of organic wastewater particles in laboratory scale and pilot scale biofilm reactors under anoxic and aerobic conditions

1998 ◽  
Vol 38 (8-9) ◽  
pp. 179-188 ◽  
Author(s):  
K. F. Janning ◽  
X. Le Tallec ◽  
P. Harremoës
Keyword(s):  
Organic Matter ◽  
Mass Balance ◽  
Particulate Organic Matter ◽  
Removal Rate ◽  
Pilot Scale ◽  
Laboratory Scale ◽  
Synthetic Wastewater ◽  
Aerobic Conditions ◽  
Biofilm Reactors ◽  
Hydrolysis Of

Hydrolysis and degradation of particulate organic matter has been isolated and investigated in laboratory scale and pilot scale biofilters. Wastewater was supplied to biofilm reactors in order to accumulate particulates from wastewater in the filter. When synthetic wastewater with no organic matter was supplied to the reactors, hydrolysis of the particulates was the only process occurring. Results from the laboratory scale experiments under aerobic conditions with pre-settled wastewater show that the initial removal rate is high: rV, O2 = 2.1 kg O2/(m3 d) though fast declining towards a much slower rate. A mass balance of carbon (TOC/TIC) shows that only 10% of the accumulated TOC was transformed to TIC during the 12 hour long experiment. The pilot scale hydrolysis experiment was performed in a new type of biofilm reactor - the B2A® biofilter that is characterised by a series of decreasing sized granular media (80-2.5 mm). When hydrolysis experiments were performed on the anoxic pilot biofilter with pre-screened wastewater particulates as carbon source, a rapid (rV, NO3=0.7 kg NO3-N/(m3 d)) and a slowler (rV, NO3 = 0.3 kg NO3-N/(m3 d)) removal rate were observed at an oxygen concentration of 3.5 mg O2/l. It was found that the pilot biofilter could retain significant amounts of particulate organic matter, reducing the porosity of the filter media of an average from 0.35 to 0.11. A mass balance of carbon shows that up to 40% of the total incoming TOC accumulates in the filter at high flow rates. Only up to 15% of the accumulated TOC was transformed to TIC during the 24 hour long experiment.

Nitrogen mass balance across pilot-scale algae and duckweed-based wastewater stabilisation ponds

2004 ◽  
Vol 38 (4) ◽  
pp. 913-920 ◽  
Author(s):  
O.R. Zimmo ◽  
N.P. van der Steen ◽  
H.J. Gijzen
Keyword(s):  
Mass Balance ◽  
Pilot Scale

scholarly journals Approach Study for Mass Balance of Pesticide Residues in Distillers’ Stillage along with Distillate and Absence Verification of Pesticides in Distilled Spirits from Pilot-Scale of Distillation Column

Molecules ◽  
2019 ◽  
Vol 24 (14) ◽  
pp. 2572
Author(s):  
Jung-Ah Shin ◽  
Hoonho Cho ◽  
Dong-Woo Seo ◽  
Hee-Gon Jeong ◽  
Sung Chul Kim ◽  
...  
Keyword(s):  
Vapor Pressure ◽  
Mass Balance ◽  
Rice Bran ◽  
Pesticide Residues ◽  
Pilot Plant ◽  
Distillation Column ◽  
Pilot Scale ◽  
Distilled Spirits ◽  
High Vapor ◽  
Pilot Plant Scale

Herein, contaminants remaining in distillate and distillers’ stillage were quantitatively measured after distillation. After rice bran powder was contaminated with 10 ppm of lead (Pb) and cadmium (Cd) or 0.02–1.27 ppm of five pesticides (terbufos, fenthion, iprobenfos, flutolanil, and ethoprophos) followed by fermentation, single-stage distillation was performed. In the obtained distillate, no Pb or Cd was found, as expected. However, when the pesticides were added as contaminants, trace–0.05 ppm of some pesticides were detected in the distillate, possibly due to the high vapor pressure (e.g., that of ethoprophos) and contamination amount (e.g., that of flutolanil, terbufos, and fenthion). In contrast, none of the contaminating pesticides were observed in the distilled spirits when a fermented liquefaction contaminated with 0.04–4 ppm of six pesticides (fenthion, terbufos, ethoprophos, iprobenfos, oxadiazon, and flutolanil) was distilled using a pilot-plant scale distillation column, indicating that the pesticides hardly migrate to the distilled spirits.

Pilot scale study on steam explosion and mass balance for higher sugar recovery from rice straw

2015 ◽  
Vol 175 ◽  
pp. 350-357 ◽  
Author(s):  
Sandeep Sharma ◽  
Ravindra Kumar ◽  
Ruchi Gaur ◽  
Ruchi Agrawal ◽  
Ravi P. Gupta ◽  
...  
Keyword(s):  
Mass Balance ◽  
Rice Straw ◽  
Steam Explosion ◽  
Pilot Scale ◽  
Sugar Recovery

Codisposal of Disposable Diapers with Shredded Municipal Refuse in Simulated Landfills

1993 ◽  
Vol 27 (2) ◽  
pp. 209-223 ◽  
Author(s):  
F. G. Pohland ◽  
W. H. Cross ◽  
L. W. King
Keyword(s):  
Carbon Dioxide ◽  
Mass Balance ◽  
Pilot Scale ◽  
Consumer Products ◽  
Gas Phases ◽  
Municipal Refuse ◽  
Disposable Diapers ◽  
Carbon Dioxide Co2 ◽  
Absorbent Gelling Material

Pilot-scale investigations on the fate and potential effects of disposable diapers codisposed with shredded municipal refuse were conducted using simulated landfills operated under leachate containment and recycle conditions. Carbon fourteen(14C)-labelled absorbent gelling material (AGM) was used to detect the possible loss of the diaper polymer to the gases and liquids generated during the various stages of landfill stabilization. Only a small quantity (<3%) of the total 14C appeared in either the leachate or gas phases. This indicated only minor degradation of the 14C-labelled AGM to either leachate soluble products or methane (CH4) or carbon dioxide (CO2). Retrieval of the diapers and waste after the completion of the landfill stabilization is scheduled to confirm this finding and complete a 14C mass balance. Moreover, the overall results indicated the effectiveness of landfill simulations for determining the fate and effects of codisposed post-consumer products throughout the sequential phases of landfill stabilization.

Biomass Gasification in a Pilot-Scale Gasifier

2014 ◽  
Author(s):  
Yunye Shi ◽  
Tejasvi Sharma ◽  
Guiyan Zang ◽  
Albert Ratner
Keyword(s):  
Gas Chromatography ◽  
Mass Balance ◽  
Biomass Gasification ◽  
Pilot Scale ◽  
Producer Gas ◽  
Gas Composition ◽  
Operational Parameters ◽  
Gas Generation ◽  
Gas Concentration ◽  
Corn Kernels

A study of the gasification of corn kernels has been performed on an experimental, pilot-scale (50–100 lbs/hour) gasification unit. Analysis was made on the performance of the gasifier in terms of producer gas generation and composition, char production and process mass balance. In these experiments corn kernels was used so that the shapes and sized of the materials did not influence the results. Experiments were conducted with varying temperature of fuel bed. For each experimental condition, the permanent gas composition was measured continuously by gas chromatography (GC). Tar was collected according to CEN Standard. Bio-char were weighted for mass balance. The results from the study indicate that there were differences between various operational parameters in terms of producer gas concentration and char percentage.

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