Multi-Soil-Layering, the Emerging Technology for Wastewater Treatment: Review, Bibliometric Analysis, and Future Directions

Due to its unique structure and excellent purification efficiency (e.g., 98% for organic matter and between 94 and 100% for nutrients), multi-soil-layering (MSL) has emerged as an efficient eco-friendly solution for wastewater treatment and environmental protection. Through infiltration-percolation,...

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Veröffentlicht in:Water (Basel) 2022-11, Vol.14 (22), p.3653
Hauptverfasser: Sbahi, Sofyan, Mandi, Laila, Masunaga, Tsugiyuki, Ouazzani, Naaila, Hejjaj, Abdessamad
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creator Sbahi, Sofyan
Mandi, Laila
Masunaga, Tsugiyuki
Ouazzani, Naaila
Hejjaj, Abdessamad
description Due to its unique structure and excellent purification efficiency (e.g., 98% for organic matter and between 94 and 100% for nutrients), multi-soil-layering (MSL) has emerged as an efficient eco-friendly solution for wastewater treatment and environmental protection. Through infiltration-percolation, this soil-based technology allows pollutants to move from the MSL upper layers to the outlet while maintaining direct contact with its media, which helps in their removal via a variety of physical and biochemical mechanisms. This paper attempts to comprehensively evaluate the application of MSL technology and investigate its progress and efficacy since its emergence. Thus, it will attempt via a bibliometric analysis using the Web of Science database (from 1993 to 1 June 2022) related to MSL technology, to give a clear picture of the number of publications (70 studies), the most active academics, and countries (China with 27 studies), as well as collaborations and related topics. Furthermore, through hybrid combinations, pollutant removal processes, MSL effective media, and the key efficiency parameters, this paper review will seek to provide an overview of research that has developed and examined MSL since its inception. On the other hand, the current review will evaluate the modeling approaches used to explore MSL behavior in terms of pollutant removal and simulation of its performance (R2 > 90%). However, despite the increase in MSL publications in the past years (e.g., 13 studies in 2021), many studies are still needed to fill the knowledge gaps and urging challenges regarding this emerging technology. Thus, recommendations on improving the stability and sustainability of MSLs are highlighted.
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subjects Bacteria
Bibliometrics
Efficiency
Environmental protection
Laboratories
Layering
New technology
Nutrients
Organic matter
Pathogens
Percolation
Pollutant removal
Pollutants
Purification
Reviews
Rural areas
Sanitation
Sediment pollution
Sewage
Software
Soil layers
Soil pollution
Soil sciences
Soils
Statistical analysis
Sustainability
Wastewater analysis
Wastewater treatment
Water treatment
title Multi-Soil-Layering, the Emerging Technology for Wastewater Treatment: Review, Bibliometric Analysis, and Future Directions
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