Chemically Separating Manure Wastewater Eliminates Methane during Anaerobic Storage

CSA News ◽  
2021 ◽  
Keyword(s):  
Anaerobic Storage

Effect of aerobic and anaerobic storage on mitochondrial anion uniport

1986 ◽  
Vol 14 (6) ◽  
pp. 1043-1044 ◽  
Author(s):  
MICHAEL J. SELWYN ◽  
JOHN G. COMERFORD ◽  
ALAN P. DAWSON ◽  
DEREK V. FULTON
Keyword(s):  
Anaerobic Storage ◽  
Aerobic And Anaerobic ◽  
Anion Uniport

THE EFFECTS OF ANAEROBIC STORAGE AND PROCESSING OF HIGH-MOISTURE BARLEY ON ITS ILEAL DIGESTIBILITY BY, AND PERFORMANCE OF, GROWING SWINE

1987 ◽  
Vol 67 (3) ◽  
pp. 829-840 ◽  
Author(s):  
E. M. WELTZIEN ◽  
F. X. AHERNE
Keyword(s):  
Aspartic Acid ◽  
Average Daily Gain ◽  
Latin Square ◽  
Growing Pigs ◽  
Neutral Detergent Fiber ◽  
Feed Conversion ◽  
Initial Weight ◽  
High Moisture ◽  
Ileal Digestibility ◽  
Anaerobic Storage

Two studies were undertaken to determine the feeding value of high-moisture barley (HMB) for growing swine. HMB containing approximately 25% moisture and dry barley (approximately 13% moisture) was harvested from the same 21.8-ha field. On a dry matter (DM) basis, the HMB yielded 19.6% more than the dry barley. In the first experiment, 56 crossbred gilts and 24 crossbred barrows of an average initial weight of 28 kg were allocated on the basis of initial weight and sex to diets based on either anaerobically stored HMB or dry barley. Pigs fed the HMB-based diet consumed significantly more feed (P < 0.05) on a DM basis, than did pigs fed the dry-barley-based diet. Average daily gain (ADG) and feed conversion efficiency (FCE) were not affected by diet (P > 0.05). In the second experiment, eight barrows (57.6 kg initial weight), fitted with ileal T-cannulas, were used in a replicated 4 × 4 Latin square to determine the apparent ileal digestibilities of nutrients in diets based on ground or rolled HMB (75% DM) and ground or rolled dry barley (87% DM). There were no differences (P > 0.05) among the four treatment groups in the apparent ileal digestibilities of the DM, CP, gross energy, starch or β-glucan components of the diets. The average ileal digestibility coefficient for β-glucan of the four diets was 79.6% (range: 76–82.2%), suggesting that this component is readily digested by growing pigs. The apparent ileal digestibilities for neutral detergent fiber (NDF) and phosphorus were lower (P < 0.05) for the ground dry barley diet than for the other diets. The apparent ileal digestibilities of lysine, methionine, isoleucine, alanine, valine, and aspartic acid were significantly higher (P < 0.05) for the ground HMB diet than for the dry barley diets. However, the digestibility coefficients for lysine, isoleucine, valine, and aspartic acid for the rolled HMB diet tended to be intermediate between the digestibility coefficients of these amino acids for the ground HMB diet and those for the dry barley diet. Thus, earlier harvest, in combination with anaerobic storage generally improves the digestibility of HMB as compared to dry barley. Key words: Growing swine, high moisture barley, β-glucan, digestibility, amino acid

Anaerobic Storage of Activated Sludge: Effects on Conditioning and Dewatering Performance

1993 ◽  
Vol 28 (1) ◽  
pp. 109-116 ◽  
Author(s):  
Jacob H. Bruus ◽  
Jimmy R. Christensen ◽  
Hanne Rasmussen
Keyword(s):  
Organic Matter ◽  
Activated Sludge ◽  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
Working Hours ◽  
Bulk Water ◽  
Optimal Dosage ◽  
Nitrogen And Phosphorus ◽  
Waste Products ◽  
Anaerobic Storage

Since dewatering equipment is commonly operated only during normal working hours, activated sludge must often be stored in an anaerobic condition prior to conditioning. It is the objective of this study to investigate the influence of anaerobic storage on conditioning requirements and dewatering performance on a laboratory scale. Sludges were collected at two large treatment plants (removal of organic matter, nitrogen and phosphorus) and one small treatment plant (removal of organic matter). Thickened activated sludges from the three wastewater treatment plants were stored anaerobically in the laboratory and analyzed frequently during fourteen days of storage. Both organic and inorganic conditioning was used. Turbidity and Dissolved Organic Carbon (DOC) in the sludge bulk water increased as a result of the anaerobic storage. These parameters indicated a release of colloids, dissolved exopolymers and fermentation waste products such as fatty acids to the bulk water. These constituents consumed additional cationic polyelectrolyte. Filterability at the optimal dosage of polyelectrolyte was not affected by anaerobic storage. Therefore, polyelectrolyte requirements are governed by the bulk water constituents, whereas filterability of the sludge is determined by the degree of sludge floc conditioning. Iron requirements seemed unaffected by anaerobic storage, but lime requirements to obtain good filterability increased with anaerobic storage time.

INFLUENCE OF ADDITIVES ON THE ENSILING PROCESS OF WET BREWERS’ GRAINS

1975 ◽  
Vol 55 (3) ◽  
pp. 391-402 ◽  
Author(s):  
W. R. ALLEN ◽  
K. R. STEVENSON
Keyword(s):  
Butyric Acid ◽  
Storage Conditions ◽  
Test Tube ◽  
Water Soluble ◽  
High Rate ◽  
Ammoniacal Nitrogen ◽  
Time Period ◽  
Structural Carbohydrate ◽  
Butyric Acid Production ◽  
Anaerobic Storage

The results of three experiments to study various aspects of, and treatments to improve the preservation of, wet brewers’ grain are reported. In the first experiment, brewers’ grains were sampled in a brewery from the lauter tub and holding tanks. Material from the holding tanks was also ensiled in test-tube silos and sampled at various time intervals during the 18-day study. All samples were analyzed for lactobacillus growth, organic acid and ammoniacal nitrogen content and buffering capacity. Water soluble and total non-structural carbohydrate were determined for material sampled from six separate brews. No lactobacilli were isolated from the grains sampled in the lauter tub; however, lactic acid bacteria were evident in samples from the holding tanks. The lactobacillus population increased sharply during the first 2 days of ensiling, followed by a decline over the remaining 16 days of the experiment. The results of the 18-day study suggested that a silage additive would assist in satisfactory ensiling of wet brewers’ grains. The second and third experiments were designed to study the effects of various treatments on the preservation of brewers’ grains under long-term anaerobic storage conditions. In the second experiment, the 23-liter laboratory silos were ineffective in simulating actual horizontal silo conditions in the time period allocated to the study. The lack of similarity may be related to the cool temperatures under which the laboratory silos were stored. In the third experiment, 160-ml test-tube silos were used. The control silage was poorly preserved, containing high levels of acetic and butyric acid and ammoniacal nitrogen. The material treated with both rates (0.50 and 0.75%) of formic acid and the high rate (0.75%) of the formic–propionic mixture was well preserved. The addition of molasses, although inhibiting butyric acid production, was ineffective in controlling ammoniacal nitrogen production.

Red blood cell metabolism under prolonged anaerobic storage

2013 ◽  
Vol 9 (6) ◽  
pp. 1196 ◽  
Author(s):  
Angelo D'Alessandro ◽  
Federica Gevi ◽  
Lello Zolla
Keyword(s):  
Blood Cell ◽  
Red Blood Cell ◽  
Cell Metabolism ◽  
Anaerobic Storage

ASEPTIC AUTOLYSIS OF MUSCLE: BIOCHEMICAL AND MICROSCOPIC MODIFICATIONS OCCURRING IN RABBIT AND LAMB MUSCLE DURING ASEPTIC AND ANAEROBIC STORAGE

1958 ◽  
Vol 23 (3) ◽  
pp. 305-326 ◽  
Author(s):  
R. ZENDER ◽  
C. LATASTE-DOROLLE ◽  
R. A. COLLET ◽  
P. ROWINSKI ◽  
R. F. MOUTON
Keyword(s):  
Anaerobic Storage
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