Changes in microbial populations during co-composting of dewatered sewage sludge with pruning wastes in windrow piles

Abstract. Nafez AH, Nikaeen M, Hassanzadeh A, Kadkhodaei S. 2020. Changes in microbial populations during co-composting of dewatered sewage sludge with pruning wastes in windrow piles. Biodiversitas 21: 4648-4655. The aim of this paper was to study the composting of sewage sludge (SS) and pruning wa...

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Autores principales:	amirhossein nafez, mahnaz nikaeen, akbar hassanzadeh, safoora kadkhodaei
Formato:	article
Lenguaje:	EN
Publicado:	MBI & UNS Solo 2020
Materias:	bulking agent, compost, sewage sludge, thermophilic, windrow Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/5761bcdab6a3426aa622e39c6f18c360
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spelling	oai:doaj.org-article:5761bcdab6a3426aa622e39c6f18c3602021-11-22T00:51:09ZChanges in microbial populations during co-composting of dewatered sewage sludge with pruning wastes in windrow piles1412-033X2085-472210.13057/biodiv/d211026https://doaj.org/article/5761bcdab6a3426aa622e39c6f18c3602020-09-01T00:00:00Zhttps://smujo.id/biodiv/article/view/6466https://doaj.org/toc/1412-033Xhttps://doaj.org/toc/2085-4722Abstract. Nafez AH, Nikaeen M, Hassanzadeh A, Kadkhodaei S. 2020. Changes in microbial populations during co-composting of dewatered sewage sludge with pruning wastes in windrow piles. Biodiversitas 21: 4648-4655. The aim of this paper was to study the composting of sewage sludge (SS) and pruning waste as bulking agent with regard to abiotic factors and succession of functional microbial groups. To prepare the composting piles bulking agent and SS in volumetric ratios of 1:1 (TW1), 2:1(TW2), and 3:1(TW3) were used, and a pile of raw sludge was used as control. Samples for investigation were obtained from the composting piles at time intervals of 5-7 d. The temperature of the control pile and TW1 was just 37°C and did not reach the thermophilic phase. The number of thermophilic bacteria increased to 14 log CFU gDW-1 in the thermophilic phase. The salmonella was lost on the 47th and 19th days of the composting process, for TW2 and TW3, respectively. There was a significant correlation between mesophilic fungi with mesophilic bacteria (r=0.942, P<0.001). The majority of the microbial populations inspected revealed their maximum numbers towards the end of the thermophilic phase, with decreasing tendencies afterward. The number of evaluated microorganisms was controlled by differences in physicochemical parameters at different composting phases. The results revealed that the scheduling of the thermophilic period, as well as the microbial community and environmental situations, affects the microbial structure andTW2 had the best quality compared to other piles in achieving the best thermophilic phase and elimination of pathogenic microorganisms.amirhossein nafezmahnaz nikaeenakbar hassanzadehsafoora kadkhodaeiMBI & UNS Soloarticlebulking agent, compost, sewage sludge, thermophilic, windrowBiology (General)QH301-705.5ENBiodiversitas, Vol 21, Iss 10 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	bulking agent, compost, sewage sludge, thermophilic, windrow Biology (General) QH301-705.5
spellingShingle	bulking agent, compost, sewage sludge, thermophilic, windrow Biology (General) QH301-705.5 amirhossein nafez mahnaz nikaeen akbar hassanzadeh safoora kadkhodaei Changes in microbial populations during co-composting of dewatered sewage sludge with pruning wastes in windrow piles
description	Abstract. Nafez AH, Nikaeen M, Hassanzadeh A, Kadkhodaei S. 2020. Changes in microbial populations during co-composting of dewatered sewage sludge with pruning wastes in windrow piles. Biodiversitas 21: 4648-4655. The aim of this paper was to study the composting of sewage sludge (SS) and pruning waste as bulking agent with regard to abiotic factors and succession of functional microbial groups. To prepare the composting piles bulking agent and SS in volumetric ratios of 1:1 (TW1), 2:1(TW2), and 3:1(TW3) were used, and a pile of raw sludge was used as control. Samples for investigation were obtained from the composting piles at time intervals of 5-7 d. The temperature of the control pile and TW1 was just 37°C and did not reach the thermophilic phase. The number of thermophilic bacteria increased to 14 log CFU gDW-1 in the thermophilic phase. The salmonella was lost on the 47th and 19th days of the composting process, for TW2 and TW3, respectively. There was a significant correlation between mesophilic fungi with mesophilic bacteria (r=0.942, P<0.001). The majority of the microbial populations inspected revealed their maximum numbers towards the end of the thermophilic phase, with decreasing tendencies afterward. The number of evaluated microorganisms was controlled by differences in physicochemical parameters at different composting phases. The results revealed that the scheduling of the thermophilic period, as well as the microbial community and environmental situations, affects the microbial structure andTW2 had the best quality compared to other piles in achieving the best thermophilic phase and elimination of pathogenic microorganisms.
format	article
author	amirhossein nafez mahnaz nikaeen akbar hassanzadeh safoora kadkhodaei
author_facet	amirhossein nafez mahnaz nikaeen akbar hassanzadeh safoora kadkhodaei
author_sort	amirhossein nafez
title	Changes in microbial populations during co-composting of dewatered sewage sludge with pruning wastes in windrow piles
title_short	Changes in microbial populations during co-composting of dewatered sewage sludge with pruning wastes in windrow piles
title_full	Changes in microbial populations during co-composting of dewatered sewage sludge with pruning wastes in windrow piles
title_fullStr	Changes in microbial populations during co-composting of dewatered sewage sludge with pruning wastes in windrow piles
title_full_unstemmed	Changes in microbial populations during co-composting of dewatered sewage sludge with pruning wastes in windrow piles
title_sort	changes in microbial populations during co-composting of dewatered sewage sludge with pruning wastes in windrow piles
publisher	MBI & UNS Solo
publishDate	2020
url	https://doaj.org/article/5761bcdab6a3426aa622e39c6f18c360
work_keys_str_mv	AT amirhosseinnafez changesinmicrobialpopulationsduringcocompostingofdewateredsewagesludgewithpruningwastesinwindrowpiles AT mahnaznikaeen changesinmicrobialpopulationsduringcocompostingofdewateredsewagesludgewithpruningwastesinwindrowpiles AT akbarhassanzadeh changesinmicrobialpopulationsduringcocompostingofdewateredsewagesludgewithpruningwastesinwindrowpiles AT safoorakadkhodaei changesinmicrobialpopulationsduringcocompostingofdewateredsewagesludgewithpruningwastesinwindrowpiles
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Changes in microbial populations during co-composting of dewatered sewage sludge with pruning wastes in windrow piles

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