Reuse of brine from inland desalination plants with duckweed, fish and halophytes toward increased food production and improved environmental control

Oron, Gideon; Appelbaum, Samuel; Guy, Ofer

doi:10.1016/j.desal.2022.116317

Cited by 10 publications

(8 citation statements)

References 70 publications

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“…In the Kingdom of Saudi Arabia, a significant desert landscape and the risk of drought, stemming from low water availability and high agricultural and industrial water demands, are notable [5]. Options such as desalination and the reuse of industrial and urban water are considered vital for addressing water supply challenges [6]. However, the escalation of pollution and contaminants in industrial and urban wastewater is a major threat to Processes 2024, 12, 1189 2 of 19 human and ecological systems [7,8].…”

Section: Introductionmentioning

confidence: 99%

Biochar from Date Palm Waste via Two-Step Pyrolysis: A Modified Approach for Cu (II) Removal from Aqueous Solutions

Mahmoud,

Aly,

Hassan

et al. 2024

Processes

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Heavy metals such as copper, often discharged from industrial processes and agricultural activities, pose significant environmental and health risks due to their toxicity, particularly in the soluble form of Cu (II). This study investigates the effectiveness of biochar produced from date palm leaf midrib waste via a two-step pyrolysis process, as a sustainable and economical adsorbent for removing Cu (II) from aqueous solutions The biochar was characterized using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), Fourier-transform infrared spectroscopy (FTIR), and Brunauer–Emmett–Teller (BET) surface area analysis. Adsorption experiments were conducted to evaluate the effects of pH, adsorbent dosage, contact time, and initial Cu (II) concentration. The maximum adsorption capacity was observed at pH 6, with a capacity of 70 mg/g. The adsorption data were best described by the pseudo-second-order kinetic model, indicating chemisorption as the primary mechanism. Thermodynamic studies indicated that the adsorption process was spontaneous and exothermic, with a Gibbs free energy change (ΔG) of −1.245 kJ/mol at 25 °C, enthalpy change (ΔH) of −15.71 kJ/mol, and entropy change (ΔS) of 48.36 J/mol·K. Reusability tests demonstrated that the biochar retained over 85% of its initial adsorption capacity after five cycles, with capacities of 60 mg/g in the first cycle, decreasing to 52 mg/g by the fifth cycle. This study highlights the potential of biochar derived from date palm waste as an efficient, sustainable adsorbent for the removal of Cu (II) from wastewater, contributing to both environmental management and waste valorization. Future research should focus on optimizing the biochar production process and exploring its application for the removal of other contaminants.

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Section: Introductionmentioning

confidence: 99%

Biochar from Date Palm Waste via Two-Step Pyrolysis: A Modified Approach for Cu (II) Removal from Aqueous Solutions

Mahmoud,

Aly,

Hassan

et al. 2024

Processes

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“…With the development of the global aquaculture industry, achieving higher economic benefits and use of resources, desalination aquaculture of seawater varieties and salinity domestication of freshwater varieties have become important research directions in some countries and regions [ 11 ]. The optimization of the farming mode is beneficial not only to the development of the industry, but also to the rational utilization of water resources [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of Salinity Stress on Histological Changes, Glucose Metabolism Index and Transcriptomic Profile in Freshwater Shrimp, Macrobrachium nipponense

Li,

Ye,

et al. 2023

Animals

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Salinity is an important factor in the aquatic environment and affects the ion homeostasis and physiological activities of crustaceans. Macrobrachium nipponense is a shrimp that mainly lives in fresh and low-salt waters and plays a huge economic role in China’s shrimp market. Currently, there are only a few studies on the effects of salinity on M. nipponense. Therefore, it is of particular importance to study the molecular responses of M. nipponense to salinity fluctuations. In this study, M. nipponense was set at salinities of 0, 8, 14 and 22‰ for 6 weeks. The gills from the control (0‰) and isotonic groups (14‰) were used for RNA extraction and transcriptome analysis. In total, 593 differentially expressed genes (DEGs) were identified, of which 282 were up-regulated and 311 were down-regulated. The most abundant gill transcripts responding to different salinity levels based on GO classification were organelle membrane (cellular component), creatine transmembrane transporter activity (molecular function) and creatine transmembrane transport (biological function). KEGG analysis showed that the most enriched and significantly affected pathways included AMPK signaling, lysosome and cytochrome P450. In addition, 15 DEGs were selected for qRT-PCR verification, which were mainly related to ion homeostasis, glucose metabolism and lipid metabolism. The results showed that the expression patterns of these genes were similar to the high-throughput data. Compared with the control group, high salinity caused obvious injury to gill tissue, mainly manifested as contraction and relaxation of gill filament, cavity vacuolation and severe epithelial disintegration. Glucose-metabolism-related enzyme activities (e.g., pyruvate kinase, hexokinase, 6-phosphate fructose kinase) and related-gene expression (e.g., hexokinase, pyruvate kinase, 6-phosphate fructose kinase) in the gills were significantly higher at a salinity of 14‰. This study showed that salinity stress activated ion transport channels and promoted an up-regulated level of glucose metabolism. High salinity levels caused damage to the gill tissue of M. nipponense. Overall, these results improved our understanding of the salt tolerance mechanism of M. nipponense.

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“…From 2010 to 2020, global freshwater production through desalination processes increased by 6.8% [6]. Reverse osmosis (RO) accounts for 85% of the operational desalination plants in the world [6]; however, costs associated with energy are high [7], and concentrated waste management is a challenge, specifically for inland desalination plants [8]. Traditional disposal methods of concentrated waste include discharge to surface waters and oceans through deep well injection and thermal evaporation, which may all have ecological costs [9].…”

Section: Introductionmentioning

confidence: 99%

“…Traditional disposal methods of concentrated waste include discharge to surface waters and oceans through deep well injection and thermal evaporation, which may all have ecological costs [9]. Other concentrated waste-disposal methods, such as zero liquid discharge technologies and the use of waste as an irrigation source, are still being developed [8,9]. It was hypothesized that there would be minimal effects of the concentrated waste when it was applied to native halophytes [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…Many crop plants are stressed by both osmotic potential and biochemical process reductions, which reduces yield when introduced to saline and sodic soils [20]. However, in halophytic plants, toxic concentrations of ions leading to salinity do not appear to be reached [8,21]. Halophytes have been noted to compartmentalize ion accumulation, adjust the osmotic potential, and secrete salts from specialized glands [22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

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The Effects of Brackish Irrigation on Soil Ion Accumulation and Growth of Atriplex Species

Cerra,

Shukla,

Jeon

et al. 2023

Soil Systems

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Prolonged drought conditions in New Mexico have led growers to use brackish groundwater for crop irrigation. Desalination of the groundwater with reverse osmosis (RO) is possible, but the concentrated waste requires environmentally safe disposal, such as by irrigating native halophytic plants, Atriplex, which could be cultivated to feed livestock. We hypothesized that ions from the brackish irrigation would increasingly accumulate in the soil away from the roots as the wetting front expanded further from the emitter, while not affecting the aboveground growth of the plants. Atriplex species were irrigated with brackish water at two irrigation levels for three years. Soil samples were collected at the beginning, middle, and end of the study at two depths and three distances from the emitter. Electrical conductivity (EC), soil ion accumulation, and plant growth were recorded. The average EC of the soil increased with brackish water irrigation. As the ions accumulated along the wetting front of the percolating water rather than near roots, a favorable environment for root growth was provided. While sodic levels of ion accumulation were not reached in this study, aboveground growth still declined. This leads to the recommendation that RO-concentrated waste could be used to irrigate Atriplex species for livestock fodder, with further plans to irrigate with fresh water to remove accumulated ions as a potential sustainable waste management process. Additional studies are necessary to develop guidelines for Atriplex tolerance and harvesting.

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Reuse of brine from inland desalination plants with duckweed, fish and halophytes toward increased food production and improved environmental control

Cited by 10 publications

References 70 publications

Biochar from Date Palm Waste via Two-Step Pyrolysis: A Modified Approach for Cu (II) Removal from Aqueous Solutions

Biochar from Date Palm Waste via Two-Step Pyrolysis: A Modified Approach for Cu (II) Removal from Aqueous Solutions

Effects of Salinity Stress on Histological Changes, Glucose Metabolism Index and Transcriptomic Profile in Freshwater Shrimp, Macrobrachium nipponense

The Effects of Brackish Irrigation on Soil Ion Accumulation and Growth of Atriplex Species

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