Application of sewage sludge for cereal production in a Mediterranean environment (Lebanon)

Purpose Management of sewage sludge generated from wastewater treatment plants is a big challenge for its potential reusage in agriculture. Most of the Lebanese local sludge is discarded in the water or in landfills (most wastewater plants are partially functional). The objective of this research wa...

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Main Authors: Danny Romanos, Nabil Nemer, Yara Khairallah, Marie Therese Abi Saab
Format: Article
Language:English
Published: OICC Press 2021-09-01
Series:International Journal of Recycling of Organic Waste in Agriculture
Subjects:
Online Access:http://ijrowa.khuisf.ac.ir/article_681916_14ef499c138cea5083500c220a1e4eeb.pdf
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author Danny Romanos
Nabil Nemer
Yara Khairallah
Marie Therese Abi Saab
author_facet Danny Romanos
Nabil Nemer
Yara Khairallah
Marie Therese Abi Saab
author_sort Danny Romanos
collection DOAJ
description Purpose Management of sewage sludge generated from wastewater treatment plants is a big challenge for its potential reusage in agriculture. Most of the Lebanese local sludge is discarded in the water or in landfills (most wastewater plants are partially functional). The objective of this research was to assess the effect of the application of different sewage sludge rates on the wheat production as an alternative of chemical fertilizer. Method Field trials were conducted, for one-year study, in IAAT village in the Bekaa valley-Lebanon. The considered treatments of 4, 8 and 16 kg.m-2 rates were compared to a control treatment. Physicochemical and microbiological analysis were performed on sludge and soil samples (pre cultivation and post-harvest). The harvested wheat was also analyzed for several parameters as mineral content. Results Results presented significant differences between control and treatments. pH values decreased with biosolids additions; organic matter rose in the amended soils, macronutrients levels increased. Heavy metals outcome increased significantly after amendment, microbiological analysis didn’t show any contamination by Salmonella, E.Coli, Staphylococcus Aureus and Helminth eggs. As for wheat plants' evaluation, fiber and protein contents presented an increase similar to nitrogen and phosphorus. Conclusion These results are a key component that identifies the role of biosolids as pH regulator and soil conditioner which improves the physicochemical properties of soil without any risk of microbiological contamination. These results are promising and they encourage the use of biosolids as agriculture amendment.
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publishDate 2021-09-01
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spelling doaj-art-ded47a74a5ce4997a8cb24ca36d229bc2025-02-03T09:47:51ZengOICC PressInternational Journal of Recycling of Organic Waste in Agriculture2195-32282251-77152021-09-0110323324410.30486/ijrowa.2021.1903739.1098681916Application of sewage sludge for cereal production in a Mediterranean environment (Lebanon)Danny Romanos0Nabil Nemer1Yara Khairallah2Marie Therese Abi Saab3Department of Agriculture and Food Engineering, Holy Spirit University of Kaslik (USEK), P.O. Box 446 Jounieh, LebanonDepartment of Agriculture and Food Engineering, Holy Spirit University of Kaslik (USEK), P.O. Box 446 Jounieh, LebanonLebanese Agricultural Research Institute, P.O. Box 90-1965, Fanar, LebanonDepartment of Agriculture and Food Engineering, Holy Spirit University of Kaslik (USEK), P.O. Box 446 Jounieh, LebanonPurpose Management of sewage sludge generated from wastewater treatment plants is a big challenge for its potential reusage in agriculture. Most of the Lebanese local sludge is discarded in the water or in landfills (most wastewater plants are partially functional). The objective of this research was to assess the effect of the application of different sewage sludge rates on the wheat production as an alternative of chemical fertilizer. Method Field trials were conducted, for one-year study, in IAAT village in the Bekaa valley-Lebanon. The considered treatments of 4, 8 and 16 kg.m-2 rates were compared to a control treatment. Physicochemical and microbiological analysis were performed on sludge and soil samples (pre cultivation and post-harvest). The harvested wheat was also analyzed for several parameters as mineral content. Results Results presented significant differences between control and treatments. pH values decreased with biosolids additions; organic matter rose in the amended soils, macronutrients levels increased. Heavy metals outcome increased significantly after amendment, microbiological analysis didn’t show any contamination by Salmonella, E.Coli, Staphylococcus Aureus and Helminth eggs. As for wheat plants' evaluation, fiber and protein contents presented an increase similar to nitrogen and phosphorus. Conclusion These results are a key component that identifies the role of biosolids as pH regulator and soil conditioner which improves the physicochemical properties of soil without any risk of microbiological contamination. These results are promising and they encourage the use of biosolids as agriculture amendment.http://ijrowa.khuisf.ac.ir/article_681916_14ef499c138cea5083500c220a1e4eeb.pdfsoil conditionersewage sludgemacronutrientsmicronutrientsgrain yields
spellingShingle Danny Romanos
Nabil Nemer
Yara Khairallah
Marie Therese Abi Saab
Application of sewage sludge for cereal production in a Mediterranean environment (Lebanon)
International Journal of Recycling of Organic Waste in Agriculture
soil conditioner
sewage sludge
macronutrients
micronutrients
grain yields
title Application of sewage sludge for cereal production in a Mediterranean environment (Lebanon)
title_full Application of sewage sludge for cereal production in a Mediterranean environment (Lebanon)
title_fullStr Application of sewage sludge for cereal production in a Mediterranean environment (Lebanon)
title_full_unstemmed Application of sewage sludge for cereal production in a Mediterranean environment (Lebanon)
title_short Application of sewage sludge for cereal production in a Mediterranean environment (Lebanon)
title_sort application of sewage sludge for cereal production in a mediterranean environment lebanon
topic soil conditioner
sewage sludge
macronutrients
micronutrients
grain yields
url http://ijrowa.khuisf.ac.ir/article_681916_14ef499c138cea5083500c220a1e4eeb.pdf
work_keys_str_mv AT dannyromanos applicationofsewagesludgeforcerealproductioninamediterraneanenvironmentlebanon
AT nabilnemer applicationofsewagesludgeforcerealproductioninamediterraneanenvironmentlebanon
AT yarakhairallah applicationofsewagesludgeforcerealproductioninamediterraneanenvironmentlebanon
AT mariethereseabisaab applicationofsewagesludgeforcerealproductioninamediterraneanenvironmentlebanon