anaerobic digestion Articles
-
Evaluation of anaerobic digestate as a substrate for vermicomposting
Vermicomposting is an established process to convert organic wastes into vermicastings suitable for plant growth. This research investigated the vermicomposting of anaerobic digestate with four different ratios of sawdust as a bulking material, for 75 days. The optimum proportion of anaerobic digestate to sawdust was identified as 70:30 based on worm growth and reproduction. Vermicomposting ...
-
A study on Air Filled Porosity evolution in sludge composting
Air Filled Porosity (AFP) is a key parameter in the composting process, conditioning oxygen availability and heat accumulation. Air pycnometry is considered the most adequate methodology for AFP determination. This technique requires withdrawing a sample of material from the composting mass for AFP measurement, which may alter its physical characteristics. A novel strategy that permits to measure ...
-
Vermicompost as an accelerator of methane production
The influences of different vermicompost concentrations of 8.33, 4.35 and 0.9%, respectively (based on TS), on the CH4 production, Specific Methanogenic Activities (SMAs) of the anaerobic sludge, pH and COD removal were investigated. A maximum cumulative CH4 production of 874 ml/L fermentation liquor was obtained from the experiment with vermicompost concentration of 8.33% which increased by ...
-
Anaerobic batch degradation of cattail by rumen cultures
The anaerobic batch digestion of cattail with two substrate concentrations of 10 g and 30 g Volatile Solids (VS)/l was investigated in this study. The hydrolysis of cattail was not significantly affected by the substrate concentrations, and it was able to be described by a first-order kinetic model with hydrolysis constants of 0.298 d−1 and 0.294 d−1, respectively. The main aqueous products from ...
-
Removal and recovery of ammonia from chicken manure
The feasibility of the conversion of organic nitrogen available in raw chicken manure (CM) into ammonia via hydrolysis and the removal of ammonia from anaerobically digested manure were evaluated in this study. Firstly, the hydrolysis experiments were performed and the effects of temperature, total solids (TS) content and retention time were investigated. The results showed that 90% of the ...
-
Effect of poultry waste on vermicomposting of anaerobically digested cattle dung slurry
This study was conducted to explore the effect of poultry waste (PW) on the vermicomposting of anaerobically digested cattle dung slurry (CDS) using Eisenia fetida worm species. A total of three vermicomposting beds, having different percentage of PW and CDS were established (100% CDS; 75% CDS + 25% PW; 50% CDS + 50% PW). At the end of experiment vermicompost showed a higher concentration of ...
-
ADM1 modelling of large-scale covered in-ground anaerobic reactor treating sugarcane vinasse
In this paper, we demonstrate in a clear procedure the application of the Anaerobic Digestion Model No. 1 (ADM1) to model a large-scale covered in-ground anaerobic reactor (Cigar), processing sugarcane vinasse from a biorefinery in Brazil. The biochemical make-up (carbohydrates, proteins, and lipids) of the substrate was analysed based on the food industry standards. Two distinct subsets of ...
-
NAV Maharashtra Chakan Oil Mill Ltd. Sangli
Pilot plant had been installed by us to study the anaerobic treatment of effluent coming from edible oil mill, a special culture is being developed to treat emulsified oil present in the effluent. The study was carried out at Client’s premises; we have installed the plant and deputed our chemists round the clock to operate the plant. The results are encouraging, based on the pilot plant ...
-
Development of Waste Sawdust as a plant protection material for horticulture and agriculture
Untitled Document Lignin is one of the major wastes of modern society, in the form of wood waste such as sawdust. In nature, lignin is slowly digested to soil humus. This project is to ascertain whether sawdust could be digested into a plant protection material. The value of this would be that it would control some pests and diseases without being a pesticide nor fertilizer. ...
-
Phosphorus distribution in untreated and composted solid fractions from slurry separation
Received for publication May 7, 2009. The distribution of phosphorus (P) (water-soluble inorganic P [Pi], acid-soluble Pi, and residual P) was determined in 40 samples of solids from solid–liquid separated slurry. These were collected from separation plants using different technologies, separating by simple mechanical means, by flocculation as pre-treatment before mechanical separation or by ...
-
A strategy for sustainable livestock husbandry wastewater treatment in China
A strategy for sustainable treatment of the livestock husbandry wastewater is proposed, which is to recycle anaerobic treatment effluent as irrigation water. The existing treatment system was modified by deleting the treatment units after the anaerobic digestion. Chinese cabbage and Korean radish were selected as seeding plants in two sets of field irrigation experiments with various portions of ...
-
Significance of Phosphorus in Anaerobic Digestion Residuals Recovery
Gas production and energy potential typically dominate the spotlight in the anaerobic digestion (AD) technology world, while benefits of residues and nutrient management from AD are overshadowed. However, utilizing AD residues and considering the value of properly managing nutrients, such as phosphorus, may make-or-break projects considered uneconomical based on energy production value alone. ...
-
Hog facility Texas, USA
Type of Wastewater System: Supernate pit flush system Problem: This facility was having problems with manure crusting and floating on the top of the pit. This was making it impossible to flush the solids from the pit to an anaerobic digester. It was also having a tremendous buildup of ammonia gas that was causing irritation to the pigs and the employees. Flies were beginning to use the crusting ...
-
Palm oil mill effluent treatment and utilization to ensure the sustainability of palm oil industries
The purpose of this study was to evaluate the current condition of palm oil mill effluent (POME) treatment and utilization and to propose alternative scenarios to improve the sustainability of palm oil industries. The research was conducted through field survey at some palm oil mills in Indonesia, in which different waste management systems were used. Laboratory experiment was also carried ...
-
From Farm to Fork Step 1: Agricultural Sensors in Food Production
In this series of articles, we bring you the journey of your food, from farm to fork, highlighting the agricultural sensors used along the way. Edinburgh Sensors products can be used in virtually every step of the food chain in order to ensure the quality and safety of the final food product. This article focuses on the first step of the journey, food production. The origin of the majority of ...
-
Palm oil mill effluent treatment and utilization to ensure the sustainability of palm oil industries
The purpose of this study was to evaluate the current condition of palm oil mill effluent (POME) treatment and utilization and to propose alternative scenarios to improve the sustainability of palm oil industries. The research was conducted through field survey at some palm oil mills in Indonesia, in which different waste management systems were used. Laboratory experiment was also carried ...
-
Pretreatment of brewery effluent to cultivate Spirulina sp. for nutrients removal and biomass production
Due to the low concentration of nitrate and high contents of organics, brewery effluent was not suitable for the cultivation of Spirulina sp. This work changed the nutrient profile of brewery effluent effectively by dilution, addition of nitrate, and anaerobic digestion. The result showed that the optimum dilution rate and NaNO3 addition for brewery effluent were 20% and 0.5 g/L, ...
-
GTI Helps Dairy Plant Keep Treatment System Operating Successfully for 25 Years
The Customer: A large milk processing plant located in the United States with global distribution. The Customer’s Needs: The plant is located in an urban setting, surrounded by residences and businesses. Odor from the treatment system is a prime concern for the milk processor. When the milk processor acquired the plant, the biogas collection cover on the wastewater treatment ...
-
Training Provision
To help demonstrate the opportunities for growing energy crops and using farm residues in anaerobic digestion, we ran a series of training days for farmers. The events sought to address the technical challenges facing growers and the development of the sector, while providing a network for communication between members of the supply chain. Approach Working on behalf of the UK Department of ...
By NNFCC Ltd.
-
From Farm to Fork Step1: Agricultural Sensors in Food Production
In this series of articles, we bring you the journey of your food, from farm to fork, highlighting the agricultural sensors used along the way. Edinburgh Sensors products can be used in virtually every step of the food chain in order to ensure the quality and safety of the final food product. This article focuses on the first step of the journey, food production. The origin of the majority of ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you