Combination of electrolysis and microalgae cultivation to beneficial reuse fertilizer wastewater from poultry manure anaerobic digestion effluent

Vinasse is a residue produced in large quantities as a sub-product of ethanol production. Anaerobic digestion of vinasse can yield large amounts of biogas, but often difficulties arise in maintaining stable operation, due to the acidity of the material (which has a pH between 3.5 and 5) and a strong tendency to further acidification. Anaerobically digested vinasse can be used as part of a culture medium for microalgae cultivation, for the production of biodiesel and other compounds, whilst the excess CO2 produced in the ethanol fermentation can be used to stimulate algal growth. During algae cultivation, the pH of the culture medium has a strong tendency to increase; therefore, recycling of the spent culture medium or the concentrated algae suspension to the anaerobic digester treating vinasse was considered an option for pH stabilization there. Batch tests, however, showed that alkalinity of the spent culture broth, in spite of its high pH, is too low (only 350 mgCaCO3L−1) to help stabilise the pH of vinasse digestion. Alkalinity of the algae suspension is higher and digestion of a mixture of vinasse and a suspension of algae results in efficient biogas production, but still the alkalinity is insufficient to stabilise the pH in a range suitable for methanogenic microorganisms; hence, the addition of additional alkalinity, for instance as sodium bicarbonate or urea, remains necessary.

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Sustainable microalgae cultivation by using anaerobic centrate and biogas from anaerobic digestion

Algal Research ◽

10.1016/j.algal.2018.08.028 ◽

2018 ◽

Vol 35 ◽

pp. 115-124 ◽

Cited By ~ 5

Author(s):

Dingnan Lu ◽

Xiaoqi (Jackie) Zhang ◽

Xiao Liu ◽

Lin Zhang ◽

Mark Hines

Keyword(s):

Anaerobic Digestion ◽

Microalgae Cultivation

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Pretreatment of Animal Manure Biomass to Improve Biogas Production: A Review

Energies ◽

10.3390/en13143573 ◽

2020 ◽

Vol 13 (14) ◽

pp. 3573 ◽

Cited By ~ 3

Author(s):

Meneses-Quelal Orlando ◽

Velázquez-Martí Borja

Keyword(s):

Anaerobic Digestion ◽

Methane Production ◽

Biogas Production ◽

Poultry Manure ◽

Animal Manure ◽

Methane Yield ◽

Operational Parameters ◽

Advantages And Disadvantages ◽

Physical Chemical ◽

Chemical Pretreatments

The objective of this research is to present a review of the current technologies and pretreatments used in the fermentation of cow, pig and poultry manure. Pretreatment techniques were classified into physical, chemical, physicochemical, and biological groups. Various aspects of these different pretreatment approaches are discussed in this review. The advantages and disadvantages of its applicability are highlighted since the effects of pretreatments are complex and generally depend on the characteristics of the animal manure and the operational parameters. Biological pretreatments were shown to improve methane production from animal manure by 74%, chemical pretreatments by 45%, heat pretreatments by 41% and physical pretreatments by 30%. In general, pretreatments improve anaerobic digestion of the lignocellulosic content of animal manure and, therefore, increase methane yield.

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Management approach of livestock manure in present farming system of Bangladesh

Asian Journal of Medical and Biological Research ◽

10.3329/ajmbr.v5i1.41047 ◽

2019 ◽

Vol 5 (1) ◽

pp. 63-70

Author(s):

Jobaida Shovna Khanam ◽

Khan Shahidul Huque ◽

Nazmul Huda ◽

Mohammad Khairul Bashar

Keyword(s):

Anaerobic Digestion ◽

Performance Indicator ◽

Storage System ◽

Research Work ◽

Poultry Manure ◽

Small Ruminants ◽

Farming System ◽

Management Approach ◽

Livestock Manure ◽

Liquid Slurry

Laying aside manure meat, milk and egg is considered as key performance indicator of livestock farm profitability of Bangladesh till yet whereas manure contains minimum 45-55% feed nutrient fed to animals. A survey based research work was conveyed to find out the major channel of using this valuable livestock manure by farmers from twelve selected district of Bangladesh. Results showed that most of the cattle and buffalo farmers prefer solid storage system to manage their manure. From this stored manure, about 35% was used for land fertilization, 47% for burning fuel preparation, 8% for composting and remaining 10% become completely wasted. A very few of cattle manure (4.65) was utilized by the care of anaerobic digestion. But this improved system was completely absent in case of buffalo and small ruminants manure management. Dung produced from small ruminants fully goes for solid piling. About 20% of poultry manure managed in improved way and the remaining portion was mostly utilized in a very disparage way. In anaerobic digestion system, the produced gas went for home consumption and bio-slurry creates havoc for both farmer and environment. Land fertilization and aquaculture coves its utilization but the amount is too low compared to its production. Above 52% of total bio-slurry become wasted due to limited knowledge and lack of appropriate handling techniques. The scenario of urine and liquid slurry management was very melancholic. About 0.37 and 0.203 kg methane emission per head per year was calculated from solid storage system of cattle and small ruminant animal manure. The value is also high in burning fuel preparation (5.46 kg) and liquid slurry (5.81 kg) and a bit low in anaerobic digestion system (1.24 kg) per head per year. Asian J. Med. Biol. Res. March 2019, 5(1): 63-70

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Performance of Anaerobic Digestion of Chicken Manure Under Gradually Elevated Organic Loading Rates

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph16122239 ◽

2019 ◽

Vol 16 (12) ◽

pp. 2239 ◽

Cited By ~ 5

Author(s):

Fei Wang ◽

Mengfu Pei ◽

Ling Qiu ◽

Yiqing Yao ◽

Congguang Zhang ◽

...

Keyword(s):

Anaerobic Digestion ◽

Biogas Production ◽

Poultry Manure ◽

Ammonia Nitrogen ◽

Methane Content ◽

Chicken Manure ◽

Continuous Stirred Tank Reactor ◽

Organic Loading ◽

Biogas Yield ◽

Loading Rates

Poultry manure is the main source of agricultural and rural non-point source pollution, and its effective disposal through anaerobic digestion (AD) is of great significance; meanwhile, the high nitrogen content of chicken manure makes it a typical feedstock for anaerobic digestion. The performance of chicken-manure-based AD at gradient organic loading rates (OLRs) in a continuous stirred tank reactor (CSTR) was investigated herein. The whole AD process was divided into five stages according to different OLRs, and it lasted for 150 days. The results showed that the biogas yield increased with increasing OLR, which was based on the volatile solids (VS), before reaching up to 11.5 g VS/(L·d), while the methane content was kept relatively stable and maintained at approximately 60%. However, when the VS was further increased to 11.5 g VS/(L·d), the total ammonia nitrogen (TAN), pH, and alkalinity (CaCO3) rose to 2560 mg·L−1, 8.2, and 15,000 mg·L−1, respectively, while the volumetric biogas production rate (VBPR), methane content, and VS removal efficiency decreased to 0.30 L·(L·d)−1, 45%, and 40%, respectively. Therefore, the AD performance immediately deteriorated and ammonia inhibition occurred. Further analysis demonstrated that the microbial biomass yield and concentrations dropped dramatically in this period. These results indicated that the AD stayed steady when the OLR was lower than 11.5 g VS/(L·d); this also provides valuable information for improving the efficiency and stability of AD of a nitrogen-rich substrate.

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Anaerobic Digestion Technology for Methane Production Using Deer Manure Under Different Experimental Conditions

Energies ◽

10.3390/en12091819 ◽

2019 ◽

Vol 12 (9) ◽

pp. 1819 ◽

Cited By ~ 8

Author(s):

Hanxi Wang ◽

Jianling Xu ◽

Lianxi Sheng ◽

Xuejun Liu ◽

Meihan Zong ◽

...

Keyword(s):

Magnetic Field ◽

Anaerobic Digestion ◽

Field Strength ◽

Magnetic Field Strength ◽

Methane Production ◽

Poultry Manure ◽

Solid Content ◽

Production Factor ◽

Experimental Conditions ◽

The Magnetic Field

Anaerobic digestion (AD) is an important technology for the treatment of livestock and poultry manure. The optimal experimental conditions were studied, with deer manure as a fermentation material and mushroom residue as an inoculum. At the same time, methane production was increased by adding zeolite and changing the magnetic field conditions. The results showed that a 6% solid content was the best condition for producing methane. The optimal conditions for methane production were obtained by adding 35 g of mushroom residue to 80 g of deer manure at 35 °C. The addition of organic wastewater (OW) improved methane production. The result of improving the methane production factor showed that adding zeolite during the reaction process could increase the methane production rate. When the amount of zeolite was over 8% total solids (TSes), methane production could improve, but the rate decreased. Setting a different magnetic field strength in the AD environment showed that when the distance between the magnetic field and the reactor was 50 mm and the magnetic field strength was 10–50 mT, the methane production increment and the content of methane in the mixed gases increased.

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Blending based optimisation and pretreatment strategies to enhance anaerobic digestion of poultry manure

Waste Management ◽

10.1016/j.wasman.2017.11.002 ◽

2018 ◽

Vol 71 ◽

pp. 521-531 ◽

Cited By ~ 17

Author(s):

Ivan Rodriguez-Verde ◽

Leticia Regueiro ◽

Juan M. Lema ◽

Marta Carballa

Keyword(s):

Anaerobic Digestion ◽

Poultry Manure

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Study of Occurrence Characteristics of Antibiotic Resistance Genes in Pig manure during Anaerobic Digestion and Digestate Fertilization

E3S Web of Conferences ◽

10.1051/e3sconf/202123301130 ◽

2021 ◽

Vol 233 ◽

pp. 01130

Author(s):

PAN Xin-rong ◽

CHEN Lei ◽

YU Heng ◽

ZUO Jian-e

Keyword(s):

Antibiotic Resistance ◽

Anaerobic Digestion ◽

Relative Abundance ◽

Resistance Genes ◽

Poultry Manure ◽

Antibiotic Resistance Genes ◽

Pig Manure ◽

Rrna Gene ◽

Occurrence Characteristics ◽

Biogas Residue

Antibiotic resistance genes (ARGs) existing in livestock and poultry manure have the risk to spread and proliferate. This might endanger people’s health. The common treatment of livestock and poultry manure is anaerobic digestion. But the change of ARGs during anaerobic digestion require further study, and the effect of digestate fertilization to the antibiotic resistance of cropland soil is still unclear. This study investigated the pig manure, biogas liquid, biogas residue, and cropland soils fertilized with and without digestate. The results showed that, the relative abundance of ARGs in biogas residue was much higher than other samples. The average relative abundance was 1.46×10-1 copy ratio (copy of ARG/copy of 16S rRNA gene), and the total relative abundance was 3.07 copy ratio. There were 21 ARGs detected in the 5 samples. 11 of them were shared by the 5 samples. The main ARGs were aminoglycoside, chloramphenicol, sulfonamide, tetracycline, and multidrug. Aminoglycoside had the highest relative abundance, and the total relative abundance in all samples was 1.18 copy ratio. Anaerobic digestion increased the total relative abundance of ARGs in pig manure from 1.14×10-1 to 1.70×10-1 copy ratio. Fertilization of digestate increased the total relative abundance of AGRs in soil from 3.27×10-1 to 7.29×10-1 copy ratio.

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