Biogas slurry, also called liquid digestate, refers to the liquid part of the anaerobic digestate produced from the anaerobic digestion process, which is an environmental pollution source if it is discharged without proper treatment. To recover the nutrients in the biogas slurry, a membrane system was designed to concentrate in the work.
Get MoreFor our biogas digestor a slurry of ground biomass and warm (40°C) water is poured into the tank inlet funnel. The inlet for the digester leads down to the bottom center of the digester tank. The digested organic material leaves as a high-quality liquid fertilizer, through an outlet near the top of the outer
Get MoreKeywords: Anaerobic digestion, Biogas, Digester, Slurry, Solids Concentration. INTRODUCTION. Biogas is a product of anaerobic digestion of biodegradable materials. It is composed of methane (45-65%), carbon dioxide (35-45%), nitrogen (0-3%), hydrogen (0-1%), and 0 - 1% hydrogen sulfide (Kangmin, 2006). Millions of cubic meters of biogas are ...
Get MoreThese factors seriously restrict the resource utilization of biogas slurry, especially the large amount of biogas slurry produced by large-scale farm biogas projects every day. Put great pressure on the environment. Concentrated biogas slurry contains more amino acids, peptide enzymes and various mineral nutrients than ordinary biogas slurry.
Get MoreThe biogas slurry was firstly concentrated by vacuum distillation to reduce its volume by 80% who is called 5CBS, and then CO 2 saturated to reduce its pH to about 6.50 ± 0.20. With or without adding the exogenetic Ca, Mg and P nutrients, CO 2 -rich 5CBS (i.e., CR-5CBS) was adopted as the root or foliar fertilizer to cultivate Spathiphyllum.
Get MoreThe COD concentration of biogas slurry from sewage and piggy wastewater are 1.52 and 13.7 g L −1, respectively, while COD concentration of dairy wastewaters and cattle slurry are 60–100 g L −1 and 61–68.6 g L −1, respectively (Markou and Georgakakis 2011). Biogas slurry concentration can influence the nutrient and CO 2 removal
Get MoreThe invention discloses a kind of leaf vegetables biogas slurry Liquid Fertilizer and preparation method thereof, the leaf vegetables biogas slurry Liquid Fertilizer includes biogas slurry concentrate and water-soluble chemical fertilizer；Described water-soluble chemical fertilizer includes following components：Four water-calcium nitrate, potassium nitrate, urea, ammonium dihydrogen ...
Get MoreStudy On Treatment Of High Concentration Biogas Fermentative Liquid From Pig Farm By MAP Percipitation And Ozone Oxidation: 6 : Construction Of Chlorella Sp. And Pleurotus Ostreatus Symbiont For Swine Farm Biogas Slurry Treatment: 7 : Enhanced Effects Of Acid/ultrasonic On Phosphorus Transformation In Cow Farm Biogas Slurry By Ozonation: 8
Get MoreThe biogas slurry has high concentration of ammonia nitrogen (NH 3-N, 500–3000 mg/L) and abnormally low C/N ratio resulting from carbon consumption by anaerobic fermentation (Tan et al., 2016). The national discharge standard of NH 3-N is 80 mg/L for the biogas slurry. Conventional biological methods like A/A/O process and oxidation ditch are ...
Get MoreTo recover the nutrients in the biogas slurry, a membrane system was designed to concentrate in the work. The effects of pretreatment technology including gravity settling and ultrafiltration process were studied via analyzing the chemical oxygen demand (COD), ammonia nitrogen (NH 3 -N), total nitrogen (TN), and conductivity.
Get MoreBiogas slurry, the by-product of anaerobic digestion, represents 90 %–95% of the input feed for digesters. Treatments of biogas slurry to reduce its volume and add value to it are difficult and costly. This study used the humidification-dehumidification process to concentrate biogas slurry and find a more economical and feasible method to provide appropriate conditions for sustainable ...
Get MoreAn efficient slurry supply system is crucial to the smooth operation of the digester system. Manure is a difficult substance to handle, and the 100-cow digester processes 6.25 tons (5.6 Mg) of manure every day. The slurry flow path through the Penn State digester is shown in Figure 5. Figure 5. Slurry path through the Penn State digester.
Get MoreHighlights Swine slurry was separated into concentrated and low content liquid in this study. After the separation, the effluent of anaerobic digestion became easier to use. The efficiency of biogas production has been greatly increased by this new process. With the excess heat of biogas generation, higher temperature could be maintained.
Get MoreThe concentration factor (CF) is defined as follow: (1) C F = V i V c where V i and V c are the volume of the initial feed biogas slurry and the volume of the concentrated biogas slurry, respectively. Download : Download full-size image; Fig. 1. Schematic diagram of hybrid membrane process for concentration of biogas slurry.
Get MoreThe P and NH 4 + recovery efficiencies increased with arise in the initial P concentration. Concentrated biogas slurry is more favorable to the recovery of phosphorus and nitrogen, which is mainly due to ion activity. 3.4. Effects of Different Ion Concentrations on the Removal Efficiencies of …
Get MoreBiogas slurry is a cheap source of plant nutrients and can offer extra benefits to soil fertility and fruit quality. However, its current utilization mode and low content of active ingredients limit its further development. In this paper, a one-growing-season field study was conducted to assess the effects of concentrated biogas slurry on soil property, tomato fruit quality, and composition of...
Get MoreThe results showed that the total nutrients recovery ratio was about (losses were negligible), the concentration ratios of biogas slurry were more than 3.7 (primary concentrated via UF) and 6.6 (secondary concentrated via RO), total water recovery ratio was 46.9% (ratio of the discharged water volume to the digestate volume). the COD ...
Get MoreExperiment,biogas slurry through the Ultra-filtration membrane under ordinary pressure.,he concentrated liquor was produced by cycle concentrated.Wo have analyzed Physical and chemical characteristics of biogas slurry,heavy metal content and volatilization composition of concentrated liquor were determinated.there were abundant nutriments in ...
Get MoreThe biogas slurry was centrifuged, and the concentration of ammonia nitrogen without adsorption was measured. The supernatant (50 mL) was taken into the Erlenmeyer flask, and another Erlenmeyer flask contained the ammonium chloride solution (50 mL) with the same concentration of ammonia nitrogen as the biogas slurry.
Get MoreA laboratory scale anaerobic digester unit was setup and applied for biogas production from cow dung. Anaerobic digestion was conducted at 35°C and observed for a retention period of fifty days. The ambient and slurry temperatures, pH of slurry and amount of biogas produced were measured on a four-day interval basis. The experimental data obtained were used for kinetic studies …
Get MoreBiogas fertilizer has the characteristics of a wide source of raw materials, low cost, full nutrients, long efficiency, and soil improvement. Biogas slurry is a quick-acting fertilizer, which is suitable for vegetable fields or dry land with irrigated conditions for topdressing.
Get MoreBiogas slurry, a byproduct of biogas plants, is considered a high-quality bio-organic fertilizer. Despite providing nutrients to crops, biogas slurry may contain a high concentration of heavy metals, leading to food safety problems and endangering human health if such metals are absorbed by plants.
Get MoreBiogas slurry has the problems of having a low concentration, having a large production volume, and containing many small-molecule organic pollutants. During the fertigation process of biogas slurry, many small-molecule organic pollutants may pose potential pollution risks to groundwater.
Get MoreThe development of ecological circular agriculture has been highly encouraged to recycle agricultural wastes, reduce mineral fertilizer input, and protect the environment. Biogas slurry (BS), a by-product of biogas production generated from anaerobic digestion of animal waste and crop residues, is often considered a substitute to reduce mineral fertilizer input.
Get MorePlease note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2021 Published by Elsevier B.V. 1 Ultrafiltration concentrated biogas slurry can reduce the organic pollution of groundwater in fertigation Weishen Zeng a b, Jinrong Qiu c ...
Get MoreIt was concluded that the application of concentrated slurry is a practicable means in tomato production and will better service the-is area of sustainable agriculture. Abstract Biogas slurry is a cheap source of plant nutrients and can offer extra benefits to soil fertility and fruit quality. However, its current utilization mode and low content of active ingredients limit its further ...
Get Morefuel and high quality organic fertilizer 1355 Int.J.Curr.Microbiol.App.Sci (2017) 6(3): 1355-1363 Microorganisms especially filamentous fungi Materials and Methods possess an efficient hydrolytic system capable to convert lignocellulosic material to essential Procurement of digested biogas slurry, metabolites for growth by producing microbial ...
Get MoreA new approach for biogas slurry disposal was put forward in this study through converting biogas slurry to the organic fertilizer of Spathiphyllum. The biogas slurry was firstly concentrated by vacuum distillation to reduce its volume by 80% who is called 5CBS, and then CO2 saturated to reduce its pH to about 6.50 ± 0.20. With or without adding the exogenetic Ca, Mg and P nutrients, CO2-rich ...
Get MoreDM concentration is an important parameter to design the biogas reactor size and calculate capacity of a biogas plant such as an electrical power installation . Too diluted animal slurry reduces economic viability but too high DM, for example higher than 15% DM, may cause a …
Get MoreOrganic Fertilizer, Biogas Slurry, Concentrated Biogas Slurry Company Introduction Shandong Minhe Bio-Technology Co., Ltd is a wholly-owned subsidiary of listing corporation Shandong Minhe Animal Husbandry Incorporated Company.
Get MoreMain products of the anaerobic digestion are biogas and slurry. After extraction of biogas (energy), the slurry comes out of the digester as a by-product of the anaerobic digestion system. The main constituents of biogas are the CH 4 and CO 2 gas. The biogas burns very well when the CH 4 content is more than 50% and therefore biogas can be used ...
Get MoreSeparating the digestate and recirculating the concentrated digestate can therefore contribute to enhancing biogas production from animal slurry. The energy cost of obtaining 1 kg of concentrated digestate using a decanter centrifuge is about 110 kJ.
Get More(2010). Concentrated biogas slurry enhanced soil fertility and tomato quality. Acta Agriculturae Scandinavica, Section B — Soil & Plant Science: Vol. 60, No. 3, pp. 262-268.
Get MorePig slurry characteristics, nutrient balance and biogas production as affected by separation and acidification - Volume 153 Issue 1. ... therefore the concentration of these metals in pig slurry is high compared with the concentration in slurry from, for example, cattle (Møller et al.
Get MoreSLURRY = B RO w N G OLD? A REVIE w OF SCIENTIFIC LITERATURE ON THE K CO-p RODUCT OF BIOGAS p RODUCTION [AcronYms BP Biogas Programme B Bioslurry C Carbon CB Concentrated bioslurry C/N ratio Carbon-to-nitrogen ratio EC Electrical conductivity FAO Food and Agriculture Organization FYM Farm Yard Manure IFES Integrated Food-Energy Systems
Get MoreDownload Citation | Concentrated biogas slurry enhanced soil fertility and tomato quality | Biogas slurry is a cheap source of plant nutrients and can offer extra benefits to soil fertility and ...
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