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Management and Reuse of Sewage Sludge from Wastewater Treatment

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Wastewater Treatment and Reuse".

Deadline for manuscript submissions: closed (31 July 2021) | Viewed by 3448

Special Issue Editors


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Guest Editor
Chemical and Environmental Engineering, University of Seville, Sevilla, Spain
Interests: biomass; gasification; heavy metals; sewage sludge; sustainability; thermo-chemical process; wastewater; waste management
Special Issues, Collections and Topics in MDPI journals

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Special Issue Information

Dear Colleagues,

Sewage sludge is the solid by-product of municipal and industrial wastewater treatment plants. The global production of sewage sludge is expected to rise significantly in the next years due to increasing water demand and the requirements of wastewater treatment plants. With this increased sludge production, the necessity of an economic and environmentally sustainable treatment process is an important social issue. The papers of this Special Issue will address the current state of the art on the existing sewage sludge management solutions in terms of efficiency and environmental sustainability, in the circular economy “from waste to resources” sense. The importance of sewage sludge as a valuable source of matter and energy has been appreciated; however, its application has an associate risk due to the content of inorganic and organic toxic contaminants. Therefore, management solutions will have to take into account the economic and sustainable use of sewage sludge, and the existing legislation. Moreover, contributions are not limited to sewage sludge, and works related to obtained products from sewage sludge valorization will be also relevant for the scope of the Special Issue.

Dr. Alicia Ronda Gálvez
Dr. María Ángeles Martín-Lara
Guest Editors

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Keywords

  • ashes
  • biochar
  • bio-oil
  • environmental sustainability
  • sewage sludge
  • syngas
  • thermochemical process
  • valorization
  • waste management

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Published Papers (1 paper)

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Research

16 pages, 783 KiB  
Article
Sewage Sludge Compared with Other Substrates in the Inoculation, Growth, and Tolerance to Water Stress of Samanea saman
by Gustavo Wyse Abaurre, Jorge Makhlouta Alonso, Orivaldo José Saggin Júnior and Sergio Miana de Faria
Water 2021, 13(9), 1306; https://doi.org/10.3390/w13091306 - 7 May 2021
Cited by 3 | Viewed by 2489
Abstract
This study evaluated the initial growth and tolerance to water stress after planting Samanea saman seedlings produced with different substrates and inoculation patterns. The experiment used a factorial design (3 × 3), with three substrates: standard (67% subsoil + 33% cattle manure), a [...] Read more.
This study evaluated the initial growth and tolerance to water stress after planting Samanea saman seedlings produced with different substrates and inoculation patterns. The experiment used a factorial design (3 × 3), with three substrates: standard (67% subsoil + 33% cattle manure), a commercial substrate (composed mainly of peat), and treated sewage sludge; and three inoculation patterns: control (no inoculation), fertilized (no inoculation + chemical fertilization), and inoculation with nitrogen-fixing bacteria and arbuscular mycorrhizal fungi. The seedlings were planted in plastic pots inside a greenhouse. They received irrigation after planting and were submitted to water deficit for 35 days, followed by rehydration for 31 days. The inoculation promoted higher height and biomass for seedlings produced in the standard substrate. In the sludge, the roots biomass decreased when fertilized or inoculated. Seedlings grown in sludge showed higher height and biomass before planting and at the end of the experiment. Although, after rehydration, the height increment was similar for the sludge and the standard substrate. Seedlings grown with the commercial substrate are not recommended for planting sites subjected to water deficit. The standard substrate with inoculation and the sludge without inoculation or fertilization produced seedlings that showed better recovery and growth after water deficit. Full article
(This article belongs to the Special Issue Management and Reuse of Sewage Sludge from Wastewater Treatment)
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