Operation and Maintenance of Hydraulic Structures

Tadda, Musa Abubakar; Ahsan, Amimul; Imteaz, Monzur Alam; Abubakar, Shitu; Danhassan, Umar Abdulbaki; Muhammad, Aliyu Idris

doi:10.5772/intechopen.91949

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…Hydraulic structures and infrastructures in arid and semi-arid regions are subjected to severe sedimentation [15,[21][22][23][41][42][43][44], posing enormous challenges to flood management. During short and heavy rainfall, these structures deal with sedimentation, debris flows, and high concentrations of sediments that disrupt drainage regulations, culverts, and bridges.…”

Section: (C) Sediment Deposition In Hydraulic Structuresmentioning

confidence: 99%

Flood Risk Management in Arid and Semi-Arid Areas: A Comprehensive Review of Challenges, Needs, and Opportunities

Nabinejad,

Schüttrumpf

2023

Water

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Despite water shortages and infrequent rainfall in arid and semi-arid areas, their recent floods show that flooding tends to be more severe and life-threatening. However, flooding is a poorly understood natural hazard in arid and semi-arid areas and its management needs to address a set of challenges, some of which are unique to these zones. Hence, it is of great demand to develop a comprehensive understanding of Flood Risk Management (FRM) difficulties and needs that are significant in these regions. This review paper aimed to understand the current state of FRM in arid and semi-arid areas and to explore challenges existing in FRM of these zones, based on the authors’ experiences from practice-based research. The study identified four main classes of challenges: (i) regional features and flood characteristics, (ii) operational challenges, (iii) technical challenges, and (iv) management/organizational challenges. It was then concluded that these FRM challenges are multidimensional and coupled together. After discussing the challenges, the study addressed requirements and provided an outlook on solutions, further improvements, and possibilities for FRM in these regions.

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Section: (C) Sediment Deposition In Hydraulic Structuresmentioning

confidence: 99%

Flood Risk Management in Arid and Semi-Arid Areas: A Comprehensive Review of Challenges, Needs, and Opportunities

Nabinejad,

Schüttrumpf

2023

Water

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“…[8] Solid-liquid extraction is usually proposed as an alternative to replace the solvent phase by a porous solid capable of extracting the elements of interest generally with excellent capacity and selectivity. [3,[9][10][11] Despite these good performances, the use of solids requires to change infrastructure with respect to already existing ones. Given that they combine the properties of porous solids with the easiness of manipulating liquids, porous liquids might be good candidates as an alternative to the solvent phase in LLE.…”

Section: Introductionmentioning

confidence: 99%

Hydrophobic Porous Liquids with Controlled Cavity Size and Physico‐Chemical Properties

Ginot,

El Bakkouche,

Giusti

et al. 2023

Advanced Science

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Developing greener hydrometallurgical processes implies offering alternatives to conventional solvents used for liquid‐liquid extraction (LLE) of metals. In this context, it is proposed to substitute the organic phase by a hydrophobic silica‐based porous liquid (PL). Two different sulfonated hollow silica particles (HSPs) are modified with various polyethoxylated fatty amines (EthAs) forming a canopy that provides both the targeted hydrophobicity and liquefying properties. This study shows that these properties can be tuned by varying the number of ethylene oxide units in the EthA: middle‐range molecular weight EthAs allow obtaining a liquid at room temperature, while too short or too long EthA leads to solid particles. Viscosity is also impacted by the density and size of the silica spheres: less viscous PLs are obtained with small low‐density spheres, while for larger spheres (c.a. 200 nm) the density has a less significant impact on viscosity. According to this approach, hydrophobic PLs are successfully synthesized. When contacted with an aqueous phase, the most hydrophobic PLs obtained allow a subsequent phase separation. Preliminary extraction tests on three rare earth elements have further shown that functionalization of the PL is necessary to observe metal extraction.

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