Lessons Learned from Assessment of Four Laboratory-Scale Sludge Dewaterability Methods Used During an Anaerobic Digestion Pilot Performed at the Robert W. Hite Treatment Facility

2018 ◽  
Vol 2018 (4) ◽  
pp. 224-241
Author(s):  
Isaac Avila ◽  
Blair Wisdom ◽  
Caleb Frandsen ◽  
Anna Schroeder ◽  
Quintin Schermerhorn ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Lessons Learned ◽  
Laboratory Scale ◽  
Treatment Facility ◽  
Sludge Dewaterability

Patterns of Hydrogen in Biogas from the Anaerobic Digestion of Milk-Sugars

1989 ◽  
Vol 21 (4-5) ◽  
pp. 187-196 ◽  
Author(s):  
F. E. Mosey ◽  
X. A. Fernandes
Keyword(s):  
Anaerobic Digestion ◽  
Anaerobic Digester ◽  
Laboratory Scale ◽  
Feed Pump ◽  
Anaerobic Digestion Process ◽  
Digestion Process ◽  
Skimmed Milk

Concentrations of hydrogen (1-1000 vpm) in the biogas from a laboratory-scale anaerobic digester, fed with (70 g/l) reconstituted skimmed milk as substrate, were intensively monitored to determine whether hydrogen could provide a useful new alarm/loading indicator for the anaerobic digestion process. With fast-fermenting substrates such as milk-sugars it proved to be a very sensitive event-marker, producing small ripples in time with operation of the digester feed pump as well as larger pulses caused by chloroform toxicity. Scavenging of hydrogen by lithotropic methanogens appeared to promote the fermentation of sugars directly to acetate, bypassing both the formation and subsequent breakdown of higher acids, a feature that is likely to prove peculiar to methanogenic and sulphate-reducing fermentations.

scholarly journals Anaerobic digestion life cycle assessment (LCA)

2020 ◽  
Vol 2 (5) ◽  
pp. 92-104
Author(s):  
Farhad Sakhaee
Keyword(s):  
Wastewater Treatment ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Anaerobic Digestion ◽  
Training Center ◽  
Treatment Facility ◽  
Practical Solution ◽  
Treatment Facilities ◽  
Management Report

Abstract: Life cycle assessment (LCA) is a tool to evaluate environmental impacts based on products of a process. This research is a case study of wastewater treatment facilities of ERTC (Environmental Resources Training Center), SIUE University, based on available data for two semi-annual sludge quantities (year 2015) from sludge management report. The aim of this study is to compare set of possibilities for a wastewater treatment facility at ERTC. The simulation has been done through SimaPro model. Electricity and methane were considered and the cumulative weight of their impacts has been investigated. Total solids for two semi-annual sludge has been fed to the model in kilogram and different production (electricity and methane) configuration were investigated. The most plausible configuration based on the cumulative environmental impact proposed as best practical solution.

Experiments on Anaerobic Digestion of Rice Straw for Biogas Production under NaOH Pretreatment

2014 ◽  
Vol 953-954 ◽  
pp. 220-223
Author(s):  
Ben Lin Dai ◽  
An Feng Zhu ◽  
Fei Hu Mu ◽  
Ning Xu ◽  
Zhen Wu
Keyword(s):  
Anaerobic Digestion ◽  
Rice Straw ◽  
Biogas Production ◽  
Laboratory Scale ◽  
Biogas Slurry ◽  
Naoh Pretreatment ◽  
Pretreatment Technology ◽  
Peak Value

To discuss the effect of NaOH pretreatment technology for biogas production and methane (CH4) content enhancement during the anaerobic digestion of rice straw waste, a self-designed laboratory-scale continuous anaerobic biogas digester was used in this study. Anaerobic biogas slurry, NaOH pretreatment and anaerobic digestion were evaluated for biogas production from rice straw. The results showed that the peak value of biogas production was attained on the 16th day by using 6% NaOH pretreatment on rice straw. However, the highest CH4 content was 60.8% on the 24th day for the 4% NaOH-treated rice straw. The cumulative biogas production of 6% NaOH pretreatment was the highest, about 18 720 mL, which was followed by 8% NaOH (15 057 mL), 4% NaOH (12 103 mL), and 2% NaOH (10 754 mL).

Development of a novel laboratory scale high solids reactor for anaerobic digestion of processed municipal solid wastes for the production of methane

1989 ◽  
Vol 20-21 (1) ◽  
pp. 461-478 ◽  
Author(s):  
C. J. Rivard ◽  
M. E. Himmel ◽  
T. B. Vinzant ◽  
W. S. Adney ◽  
C. E. Wyman ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Laboratory Scale ◽  
Solid Wastes ◽  
High Solids ◽  
Municipal Solid Wastes

Ultrasound pre-treatment for anaerobic digestion improvement

2009 ◽  
Vol 60 (6) ◽  
pp. 1525-1532 ◽  
Author(s):  
S. Pérez-Elvira ◽  
M. Fdz-Polanco ◽  
F. I. Plaza ◽  
G. Garralón ◽  
F. Fdz-Polanco
Keyword(s):  
Anaerobic Digestion ◽  
Energy Balance ◽  
Specific Energy ◽  
Biogas Production ◽  
Pilot Scale ◽  
Laboratory Scale ◽  
Net Generation ◽  
Batch Reactors ◽  
Anaerobic Reactors ◽  
Pre Treatment

Prior research indicates that ultrasounds can be used in batch reactors as pre-treatment before anaerobic digestion, but the specific energy required at laboratory-scale is too high. This work evaluates both the continuous ultrasound device performance (efficiency and solubilisation) and the operation of anaerobic digesters continuously fed with sonicated sludge, and presents energy balance considerations. The results of sludge solubilisation after the sonication treatment indicate that, applying identical specific energy, it is better to increase the power than the residence time. Working with secondary sludge, batch biodegradability tests show that by applying 30 kWh/m3 of sludge, it is possible to increase biogas production by 42%. Data from continuous pilot-scale anaerobic reactors (V=100 L) indicate that operating with a conventional HRT = 20 d, a reactor fed with pre-treated sludge increases the volatile solids removal and the biogas production by 25 and 37% respectively. Operating with HRT = 15 d, the removal efficiency is similar to the obtained with a reactor fed with non-hydrolysed sludge at HTR = 20 d, although the specific biogas productivity per volume of reactor is higher for the pretreated sludge. Regarding the energy balance, although for laboratory-scale devices it is negative, full-scale suppliers state a net generation of 3–10 kW per kW of energy used.

Sign in / Sign up

Export Citation Format

Share Document