Anaerobic Digestion of Slaughterhouse Wastewater: A Kinetics Study

2014 ◽  
Vol 2014 (2) ◽  
pp. 71-80
Author(s):  
Chinenyenwa Nweke ◽  
◽  
Philomena Igbokwe ◽  
Joseph Nwabanne ◽  
◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Kinetics Study ◽  
Slaughterhouse Wastewater

Working Parameters Optimization of Hydrolysis-acidogenesis reactor in two stage anaerobic digestion of slaughterhouse Wastewater for Biogas Production

2020 ◽  
Author(s):  
Dejene Tsegaye Bedane ◽  
Mohammed Mazharuddin Khan ◽  
Seyoum Leta Asfaw
Keyword(s):  
Anaerobic Digestion ◽  
Working Conditions ◽  
Retention Time ◽  
Hydraulic Retention Time ◽  
Loading Rate ◽  
Oxygen Demand ◽  
Organic Loading Rate ◽  
Organic Loading ◽  
Slaughterhouse Wastewater ◽  
Working Parameters

Abstract Background : Wastewater from agro-industries such as slaughterhouse is typical organic wastewater with high value of biochemical oxygen demand, chemical oxygen demand, biological organic nutrients (Nitrogen and phosphate) which are insoluble, slowly biodegradable solids, pathogenic and non-pathogenic bacteria and viruses, parasite eggs. Moreover it contains high protein and putrefies fast leading to environmental pollution problem. This indicates that slaughterhouses are among the most environmental polluting agro-industries. Anaerobic digestion is a sequence of metabolic steps involving consortiums of several microbial populations to form a complex metabolic interaction network resulting in the conversation of organic matter into methane (CH 4 ), carbon dioxide (CO 2 ) and other trace compounds. Separation of the phase permits the optimization of the organic loading rate and HRT based on the requirements of the microbial consortiums of each phase. The purpose of this study was to optimize the working conditions for the hydrolytic - acidogenic stage in two step/phase anaerobic digestion of slaughterhouse wastewater. The setup of the laboratory scale reactor was established at Center for Environmental Science, College of Natural Science with a total volume of 40 liter (36 liter working volume and 4 liter gas space). The working parameters for hydrolytic - acidogenic stage were optimized for six hydraulic retention time 1-6 days and equivalent organic loading rate of 5366.43 – 894.41 mg COD/L day to evaluate the effect of the working parameters on the performance of hydrolytic – acidogenic reactor. Result : The finding revealed that hydraulic retention time of 3 day with organic loading rate of 1,788.81 mg COD/L day was a as an optimal working conditions for the parameters under study for the hydrolytic - acidogenic stage. The degree of hydrolysis and acidification were mainly influenced by lower hydraulic retention time (higher organic loading rate) and highest values recorded were 63.92 % at hydraulic retention time of 3 day and 53.26% at hydraulic retention time of 2 day respectively. Conclusion : The finding of the present study indicated that at steady state the concentration of soluble chemical oxygen demand and total volatile fatty acids increase as hydraulic retention time decreased or organic loading rate increased from 1 day hydraulic retention time to 3 day hydraulic retention time and decreases as hydraulic retention time increase from 4 to 6 day. The lowest concentration of NH 4 + -N and highest degree of acidification was also achieved at hydraulic retention time of 3 day. Therefore, it can be concluded that hydraulic retention time of 3 day/organic loading rate of 1,788.81 mg COD/L .day was selected as an optimal working condition for the high performance and stability during the two stage anaerobic digestion of slaughterhouse wastewater for the hydrolytic-acidogenic stage under mesophilic temperature range selected (37.5℃). Keywords : Slaughterhouse Wastewater, Hydrolytic – Acidogenic, Two Phase Anaerobic Digestion, Optimal Condition, Agro-processing wastewater

Anaerobic digestion of slaughterhouse wastewater using a combination sludge blanket and filter arrangement in a single reactor

1998 ◽  
Vol 65 (1-2) ◽  
pp. 125-133 ◽  
Author(s):  
Rafael Borja ◽  
Charles J. Banks ◽  
Zhengjian Wang ◽  
Angela Mancha
Keyword(s):  
Anaerobic Digestion ◽  
Slaughterhouse Wastewater ◽  
Filter Arrangement

scholarly journals Anaerobic Digestion of Slaughterhouse Wastewater: CO2 Capture of Biogas Using Chlorella vulgaris

2019 ◽  
Vol 19 (1) ◽  
pp. 1 ◽  
Author(s):  
Nur Indradewi Oktavitri ◽  
Wahyu Budi Pratiwi ◽  
Indah Purnamasari ◽  
Mufrihatul Hayati ◽  
Mega Rosita Fitrianingtyas ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Chlorella Vulgaris ◽  
Observation Time ◽  
Anaerobic Digester ◽  
Co2 Removal ◽  
Anaerobic Digesters ◽  
Slaughterhouse Wastewater

Biogas quality from anaerobic digester influenced the combustion of biogas. A high percentage of CO2 in biogas indicates the low quality of biogas. Abatement of CO2 using microalgae, such as Chlorella vulgaris could enhance the quality of biogas. The aim of this research was to observe the ability of C. vulgaris on CO2 removal from slaughterhouse wastewater biogas. In this research, two anaerobic digesters were provided with the different condition of biogas collector bag. The first digester was combined with only biogas collector bag, while another digester was combined with C. Vulgaris. Slaughterhouse wastewater volume in each digester was 3.5 L. Observation time was 15 days and the samples were collected for every 5 days. The result showed that anaerobic digester was able to remove 63% of COD. Biogas composition of slaughterhouse wastewater after incubation for 15 days was 52.70% of air, 46.85% of CH4and 0.45% of CO2. C. Vulgaris enhanced CO2 removal from biogas up to 7%. The density of C. vulgaris decreased to 51 cell/mL. The biogas composition was probably influenced by the density of C. vulgaris.

Biogas from slaughterhouse wastewater anaerobic digestion is driven by the archaeal family Methanobacteriaceae and bacterial families Porphyromonadaceae and Tissierellaceae

2018 ◽  
Vol 118 ◽  
pp. 840-846 ◽  
Author(s):  
Camille E. Granada ◽  
Camila Hasan ◽  
Munique Marder ◽  
Odorico Konrad ◽  
Luciano K. Vargas ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Slaughterhouse Wastewater

scholarly journals Analysis of the transient inhibited steady-state in anaerobic digestion of a semisolid from pretreated bovine slaughterhouse wastewater

2020 ◽  
Vol 20 (2) ◽  
pp. 541-553
Author(s):  
V.C. Hernández-Fydrych ◽  
◽  
G. Benítez-Olivares ◽  
M.C. Fajardo-Ortiz ◽  
U. Rojas-Zamora ◽  
...  
Keyword(s):  
Steady State ◽  
Anaerobic Digestion ◽  
Slaughterhouse Wastewater
Sign in / Sign up

Export Citation Format

Share Document