scholarly journals Gas-Permeable Membrane Technology Coupled With Anaerobic Digestion for Swine Manure Treatment

2018 ◽  
Vol 2 ◽  
Author(s):  
Beatriz Molinuevo-Salces ◽  
Berta Riaño ◽  
Matías B. Vanotti ◽  
María C. García-González
Keyword(s):  
Anaerobic Digestion ◽  
Swine Manure ◽  
Membrane Technology ◽  
Permeable Membrane ◽  
Manure Treatment

scholarly journals Mass and Energy Balances of Dry Thermophilic Anaerobic Digestion Treating Swine Manure Mixed with Rice Straw

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Sheng Zhou ◽  
Jining Zhang ◽  
Guoyan Zou ◽  
Shohei Riya ◽  
Masaaki Hosomi
Keyword(s):  
Anaerobic Digestion ◽  
Rice Straw ◽  
Swine Manure ◽  
Rice Production ◽  
Methane Yield ◽  
Manure Treatment ◽  
Thermophilic Anaerobic Digestion ◽  
Forage Rice ◽  
Energy Balances ◽  
Mass And Energy Balances

To evaluate the feasibility of swine manure treatment by a proposed Dry Thermophilic Anaerobic Digestion (DT-AD) system, we evaluated the methane yield of swine manure treated using a DT-AD method with rice straw under different C/N ratios and solid retention time (SRT) and calculated the mass and energy balances when the DT-AD system is used for swine manure treatment from a model farm with 1000 pigs and the digested residue is used for forage rice production. A traditional swine manure treatment Oxidation Ditch system was used as the study control. The results suggest that methane yield using the proposed DT-AD system increased with a higher C/N ratio and shorter SRT. Correspondently, for the DT-AD system running with SRT of 80 days, the net energy yields for all treatments were negative, due to low biogas production and high heat loss of digestion tank. However, the biogas yield increased when the SRT was shortened to 40 days, and the generated energy was greater than consumed energy when C/N ratio was 20:1 and 30:1. The results suggest that with the correct optimization of C/N ratio and SRT, the proposed DT-AD system, followed by using digestate for forage rice production, can attain energy self-sufficiency.

scholarly journals Application of Gas-Permeable Membranes For-Semi-Continuous Ammonia Recovery from Swine Manure

Environments ◽  
2019 ◽  
Vol 6 (3) ◽  
pp. 32 ◽  
Author(s):  
Berta Riaño ◽  
Beatriz Molinuevo-Salces ◽  
Matías B. Vanotti ◽  
María Cruz García-González
Keyword(s):  
Acidic Solution ◽  
Membrane Surface ◽  
Swine Manure ◽  
Ammonia Nitrogen ◽  
Nitrogen Loading ◽  
Membrane Technology ◽  
Continuous Mode ◽  
Permeable Membrane ◽  
Total Ammonia Nitrogen ◽  
Total Ammonia

Gas-permeable membrane technology is a new strategy to minimize ammonia losses from manure, reducing pollution and recovering N in the form of an ammonium salt fertilizer. In this work, a new operational configuration to recover N using the gas-permeable membrane technology from swine manure was tested in a semi-continuous mode. It treated swine manure with a total ammonia nitrogen (TAN) concentration of 3451 mg L−1. The system was operated with low aeration rate (to raise pH), and with hydraulic retention times (HRT) of seven days (Period I) and five days (Period II) that provided total ammonia nitrogen loading rate (ALR) treatments of 491 and 696 mg TAN per L of reactor per day, respectively. Results showed a uniform TAN recovery rate of 27 g per m2 of membrane surface per day regardless of the ALR applied and the manure TAN concentration in the reactor. TAN removal reached 79% for Period I and 56% for Period II, with 90% of recovery by the membrane in both periods. Water capture in the acidic solution was also uniform during the experimental period. An increase in temperature of 3 °C of the acidic solution relative to the wastewater reduced 34% the osmotic distillation and water dilution of the product. These results suggested that the gas-permeable membrane technology operating in a semi-continuous mode has a great potential for TAN recovery from manure.

scholarly journals Recovery of Ammonia in Raw and Co-digested Swine Manure Using Gas-Permeable Membrane Technology

2018 ◽  
Vol 2 ◽  
Author(s):  
Jose de Souza Oliveira Filho ◽  
Silvana Daguerre-Martini ◽  
Matias B. Vanotti ◽  
Jose Saez-Tovar ◽  
Antonio Rosal ◽  
...  
Keyword(s):  
Swine Manure ◽  
Membrane Technology ◽  
Permeable Membrane

scholarly journals Improving the Anaerobic Digestion of Swine Manure through an Optimized Ammonia Treatment: Process Performance, Digestate and Techno-Economic Aspects

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 787
Author(s):  
Anna Lymperatou ◽  
Niels B. Rasmussen ◽  
Hariklia N. Gavala ◽  
Ioannis V. Skiadas
Keyword(s):  
Anaerobic Digestion ◽  
Large Scale ◽  
Treatment Process ◽  
Aqueous Ammonia ◽  
Swine Manure ◽  
Batch Experiments ◽  
Ammonia Treatment ◽  
Aqueous Ammonia Soaking ◽  
High Ammonia ◽  
Reduction Efficiency

Swine manure mono-digestion results in relatively low methane productivity due to the low degradation rate of its solid fraction (manure fibers), and due to the high ammonia and water content. The aqueous ammonia soaking (AAS) pretreatment of manure fibers has been proposed for overcoming these limitations. In this study, continuous anaerobic digestion (AD) of manure mixed with optimally AAS-treated manure fibers was compared to the AD of manure mixed with untreated manure fibers. Due to lab-scale pumping restrictions, the ratio of AAS-optimally treated manure fibers to manure was only 1/3 on a total solids (TS) basis. However, the biogas productivity and methane yield were improved by 17% and 38%, respectively, also confirming the predictions from a simplified 1st order hydrolysis model based on batch experiments. Furthermore, an improved reduction efficiency of major organic components was observed for the digester processing AAS-treated manure fibers compared to the non-treated one (e.g., 42% increased reduction for cellulose fraction). A preliminary techno-economic analysis of the proposed process showed that mixing raw manure with AAS manure fibers in large-scale digesters could result in a 72% increase of revenue compared to the AD of manure mixed with untreated fibers and 135% increase compared to that of solely manure.

scholarly journals Biochar and Energy Production: Valorizing Swine Manure through Coupling Co-Digestion and Pyrolysis

2020 ◽  
Vol 6 (2) ◽  
pp. 43 ◽  
Author(s):  
Rubén González ◽  
Judith González ◽  
José G. Rosas ◽  
Richard Smith ◽  
Xiomar Gómez
Keyword(s):  
Anaerobic Digestion ◽  
Waste Treatment ◽  
Wide Spectrum ◽  
Swine Manure ◽  
Solid Content ◽  
Electricity Production ◽  
Plant Design ◽  
Heating Value ◽  
High Heating Value ◽  
Bio Oil

Anaerobic digestion is an established technological option for the treatment of agricultural residues and livestock wastes beneficially producing renewable energy and digestate as biofertilizer. This technology also has significant potential for becoming an essential component of biorefineries for valorizing lignocellulosic biomass due to its great versatility in assimilating a wide spectrum of carbonaceous materials. The integration of anaerobic digestion and pyrolysis of its digestates for enhanced waste treatment was studied. A theoretical analysis was performed for three scenarios based on the thermal needs of the process: The treatment of swine manure (scenario 1), co-digestion with crop wastes (scenario 2), and addition of residual glycerine (scenario 3). The selected plant design basis was to produce biochar and electricity via combined heat and power units. For electricity production, the best performing scenario was scenario 3 (producing three times more electricity than scenario 1), with scenario 2 resulting in the highest production of biochar (double the biochar production and 1.7 times more electricity than scenario 1), but being highly penalized by the great thermal demand associated with digestate dewatering. Sensitivity analysis was performed using a central composite design, predominantly to evaluate the bio-oil yield and its high heating value, as well as digestate dewatering. Results demonstrated the effect of these parameters on electricity production and on the global thermal demand of the plant. The main significant factor was the solid content attained in the dewatering process, which excessively penalized the global process for values lower than 25% TS.

Anaerobic digestion of swine manure at various influent solids concentrations

1984 ◽  
Vol 11 (3) ◽  
pp. 157-166 ◽  
Author(s):  
J.R. Fischer ◽  
E.L. Iannotti ◽  
J.H. Porter
Keyword(s):  
Anaerobic Digestion ◽  
Swine Manure

Integrated process for anaerobically digested swine manure treatment

2019 ◽  
Vol 273 ◽  
pp. 506-514 ◽  
Author(s):  
Lu Wang ◽  
Min Addy ◽  
Jie Liu ◽  
Caitlyn Nekich ◽  
Renchuan Zhang ◽  
...  
Keyword(s):  
Swine Manure ◽  
Integrated Process ◽  
Manure Treatment
Sign in / Sign up

Export Citation Format

Share Document