scholarly journals Nutrient and pathogen suppression properties of anaerobic digestates from dairy manure and food waste feedstocks

Author(s):  
Brendan J O'Brien ◽  
Deborah A Neher ◽  
Eric D Roy

Anaerobic co-digestion of dairy manure and food wastes is increasing in the New England region of the United States because of policy measures intended to divert organic materials from landfills, reduce greenhouse gas emissions, and increase renewable biogas energy production. The sustainability of this approach depends on the management and valorization of remaining solid and liquid residues (i.e., digestates) after anaerobic digestion. Few studies have characterized digestates derived from combined dairy manure and food waste feedstocks. In this study, we analyzed screw-press separated liquid and solid digestates from 6 of 26 (23%) operational full-scale facilities in New England. We quantified multiple pools of nitrogen and phosphorus in these materials, with results suggesting that in most cases these nutrients largely exist in forms that can be recycled via slow-release fertilization, with smaller fractions in forms more easily lost to the environment. Furthermore, we found that solid digestates can inhibit mycelial growth of a common soilborne fungal pathogen, Rhizoctonia solani, suggesting potential to manage resident soil pathogens. Capitalizing on both nutrient recycling and pathogen suppression co-benefits will likely be useful in digestate valorization efforts.

2019 ◽  
Author(s):  
Brendan J O'Brien ◽  
Deborah A Neher ◽  
Eric D Roy

Anaerobic co-digestion of dairy manure and food wastes is increasing in the New England region of the United States because of policy measures intended to divert organic materials from landfills, reduce greenhouse gas emissions, and increase renewable biogas energy production. The sustainability of this approach depends on the management and valorization of remaining solid and liquid residues (i.e., digestates) after anaerobic digestion. Few studies have characterized digestates derived from combined dairy manure and food waste feedstocks. In this study, we analyzed screw-press separated liquid and solid digestates from 6 of 26 (23%) operational full-scale facilities in New England. We quantified multiple pools of nitrogen and phosphorus in these materials, with results suggesting that in most cases these nutrients largely exist in forms that can be recycled via slow-release fertilization, with smaller fractions in forms more easily lost to the environment. Furthermore, we found that solid digestates can inhibit mycelial growth of a common soilborne fungal pathogen, Rhizoctonia solani, suggesting potential to manage resident soil pathogens. Capitalizing on both nutrient recycling and pathogen suppression co-benefits will likely be useful in digestate valorization efforts.


2019 ◽  
Vol 11 (12) ◽  
pp. 6565-6573 ◽  
Author(s):  
Brendan J. O’Brien ◽  
Deborah A. Neher ◽  
Eric D. Roy

1992 ◽  
Vol 19 (2) ◽  
pp. 1-24 ◽  
Author(s):  
Thomas Tyson

Several authors have suggested that a particular managerial component was needed before cost accounting could be fully used for accountability and disciplinary purposes. They argue that the marriage of managerialism and accounting first occurred in the United States at the Springfield Armory after 1840. They generally downplay the quality and usefulness of cost accounting at the New England textile mills before that time and call for a re-examination of original mill records from a disciplinary perspective. This paper reports the results of such a re-examination. It initially describes the social and economic environment of U.S. textile manufacturing in New England in the early nineteenth century. Selected cost memos and reports are described and analyzed to indicate the nature and scope of costing undertaken at the mills in Lowell, Massachusetts, in the late 1820s and early 1830s. The paper discusses how particular cost information was used and speculates why certain more modern procedures were not adopted. Its major finding is that cost management practices fully measured up to the business complexities, economic pressures, and social forces of the day.


Author(s):  
Kelly Cosgrove ◽  
Maricarmen Vizcaino ◽  
Christopher Wharton

Food waste contributes to adverse environmental and economic outcomes, and substantial food waste occurs at the household level in the US. This study explored perceived household food waste changes during the COVID-19 pandemic and related factors. A total of 946 survey responses from primary household food purchasers were analyzed. Demographic, COVID-19-related household change, and household food waste data were collected in October 2020. Wilcoxon signed-rank was used to assess differences in perceived food waste. A hierarchical binomial logistic regression analysis was conducted to examine whether COVID-19-related lifestyle disruptions and food-related behavior changes increased the likelihood of household food waste. A binomial logistic regression was conducted to explore the contribution of different food groups to the likelihood of increased food waste. Perceived food waste, assessed as the estimated percent of food wasted, decreased significantly during the pandemic (z = −7.47, p < 0.001). Food stockpiling was identified as a predictor of increased overall food waste during the pandemic, and wasting fresh vegetables and frozen foods increased the odds of increased food waste. The results indicate the need to provide education and resources related to food stockpiling and the management of specific food groups during periods of disruption to reduce food waste.


Pathogens ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 354
Author(s):  
Lynn M. Osikowicz ◽  
Kalanthe Horiuchi ◽  
Irina Goodrich ◽  
Edward B. Breitschwerdt ◽  
Bruno Chomel ◽  
...  

Cat-associated Bartonella species, which include B. henselae, B. koehlerae, and B. clarridgeiae, can cause mild to severe illness in humans. In the present study, we evaluated 1362 serum samples obtained from domestic cats across the U.S. for seroreactivity against three species and two strain types of Bartonella associated with cats (B. henselae type 1, B. henselae type 2, B. koehlerae, and B. clarridgeiae) using an indirect immunofluorescent assay (IFA). Overall, the seroprevalence at the cutoff titer level of ≥1:64 was 23.1%. Seroreactivity was 11.1% and 3.7% at the titer level cutoff of ≥1:128 and at the cutoff of ≥1:256, respectively. The highest observation of seroreactivity occurred in the East South-Central, South Atlantic, West North-Central, and West South-Central regions. The lowest seroreactivity was detected in the East North-Central, Middle Atlantic, Mountain, New England, and Pacific regions. We observed reactivity against all four Bartonella spp. antigens in samples from eight out of the nine U.S. geographic regions.


2016 ◽  
Vol 52 ◽  
pp. 286-294 ◽  
Author(s):  
Jacqueline H. Ebner ◽  
Rodrigo A. Labatut ◽  
Jeffrey S. Lodge ◽  
Anahita A. Williamson ◽  
Thomas A. Trabold

1976 ◽  
Vol 4 (2) ◽  
pp. 89-97
Author(s):  
Thaddeus V. Gromada

Most of the one and one-half million Poles who immigrated to the United States before World War II were people of rural, Catholic, Slavic stock in search of greater economic and social opportunities. They settled in urban centers primarily in the middle Atlantic, mid-Western, and New England states where they formed communities (Polonias) around the steel mills, coal and iron mines, slaughter houses and meat packing plants, oil refineries, shoe and textile factories, granaries and milling plants. Their labor was an important element in the industrialization of America. They were among the millions of unknown persons from eastern and southern Europe, as Michael Novak put it, “who have strengthened family and neighborhood life in America, and from 1930's to the present have made possible the longest strides in the nation's history in economic matters and civil rights.” Very few scholars and intellectuals, however, could be found among these Polish immigrants. When Polish scholars, intellectuals, or artists emigrated from partitioned Poland, usually after unsuccessful revolutions, they settled in France or some other European country.


2017 ◽  
Vol 8 (1) ◽  
pp. 75-102
Author(s):  
Melike Tokay-Ünal

This article illustrates American Board of Commissioners for Foreign Missions’ support of the “missionary matrimony”, mid-nineteenth-century New England women’s perceptions of the missionary career obtained through matrimony, and their impressions of the Oriental mission fields and non-Christian or non-Protestant women, who were depicted as victims to be saved. A brief introduction to New England women’s involvement in foreign missions will continue with the driving force that led these women to leave the United States for far mission fields in the second part of the paper. This context will be exemplified with the story of a New England missionary wife. The analysis consists of the journal entries and letters of Seraphina Haynes Everett of Ottoman mission field. The writings of this woman from New England give detailed information about the spiritual voyage she was taking in the mid-nineteenth century Ottoman lands. In her letters to the United States, Everett described two Ottoman cities, Izmir (Smyrna) and Istanbul (Constantinople), and wrote about her impressions of Islam and Christianity as practiced in the Ottoman empire. Everett’s opinions of the Ottoman empire, which encouraged more American women to devote themselves to the education and to the evangelization of Armenian women of the Ottoman empire in the middle of the nineteenth century, conclude the paper.


2007 ◽  
Vol 50 (5) ◽  
pp. 1815-1821 ◽  
Author(s):  
H. M. El-Mashad ◽  
R. Zhang

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