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Desalination News international

BMC Plans Upgrade For Colaba Sewage Treatment Plant After Desalination Fails To Attract Bidders – India

he BMC is shifting its focus to upgrading the Colaba Sewage Treatment Plant (STP) in Mumbai after its previous attempt to build a desalination plant failed to attract bidders. Currently, the treated water from this STP is used for non-potable purposes such as gardening, road cleaning, and vehicle washing.

However, BMC plans to enhance the plant’s capacity to 15 million liters per day (MLD) and convert it into an advanced tertiary plant. This upgrade will enable the plant to treat sewage water, making it safe for drinking.

Every year, the city’s reliance […]

BMC Plans Upgrade For Colaba Sewage Treatment Plant After Desalination Fails To Attract Bidders – India2024-12-22T13:17:58+01:00

Spain Desalination Plant Could Grow by 50% – USA

State-owned water company Acuamed awarded this summer a $93.9-million contract to a JV of Sacyr Water, Sacyr Construction, Ferrovial water unit Cadagua and Ferrovial Construction to expand plant capacity to 120 cubic hectometers per year from its current 80 cu hm per year. The contract also covers four years of operation and maintenance by the JV.

(Source)

Spain Desalination Plant Could Grow by 50% – USA2024-12-20T12:34:37+01:00

SWCC has cancelled a $317 million mega seawater desalination plant with VA Tech Wabag – KSA

Saudi Arabia has cancelled a $317 million mega seawater desalination plant, VA Tech Wabag said in a regulatory filing on the Bombay Stock Exchange (BSE).

“The customer has notified all tender participants on 16 December 2024, that the said tender stands cancelled pursuant to their internal administrative procedures,” the company said.

The company was awarded the contract for the 300 million liters per day (MLD) seawater reverse osmosis desalination plant in September from the state-run Saline Water Conversion Corporation (SWCC).

VA Tech Wabag said it is engaging with the […]

SWCC has cancelled a $317 million mega seawater desalination plant with VA Tech Wabag – KSA2024-12-20T12:23:11+01:00

A super-hygroscopic SA-MXene@LiCl composite membrane with fast ab/desorption kinetics for efficient sorption-based atmospheric water harvesting – China

Here, a thin, porous, mechanically stable and high LiCl-loading content super-hygroscopic SA-MXene@LiCl membrane (SM@LiCl) was fabricated via vacuum-assisted filtration and freeze-drying methods. The thin and porous characteristics of the cross-linked SA-MXene network significantly reduce moisture transport resistance, while the wrapped hygroscopic LiCl effectively enhances its moisture capture capacity.

When applied to SAWH, this nanocomposite membrane demonstrates an impressive water uptake performance of 1.69 g g−1 within 1 h at 45 % RH and releases over 65 % of absorbed water after only 0.5 h of sunlight irradiation (1 kW/m2).

With its high moisture sorption capacity and rapid […]

A super-hygroscopic SA-MXene@LiCl composite membrane with fast ab/desorption kinetics for efficient sorption-based atmospheric water harvesting – China2024-12-08T12:56:56+01:00

Preparation of hydrogen evolution electrode from nickel slag: Crystal surface modulation and selective growth – China

According to the density functional theory calculations, the crystal surface with the best catalytic properties is Ni (111). Based on the theoretical calculations, this work proposed controlling the reduction order and reduction efficiency of Ni2+ and H2O in the nickel slag leachate during electrolysis to modulation of crystal surface growth of Ni. Moreover, amorphous Ni(OH)2 was designed to selectively grow in Ni product to further improve the catalytic performance of Ni (1 1 1).

The electrodes with the best catalytic performance for hydrogen evolution were obtained when the electrodeposition conditions were 30 min, 0.05 M, and […]

Preparation of hydrogen evolution electrode from nickel slag: Crystal surface modulation and selective growth – China2024-12-08T12:54:32+01:00

Enhanced operating voltage and desalination performance using ionic liquids as electrolyte for flow electrode capacitive deionisation – China

The results showed that the brine flow rate was the most significant factor affecting the desalination efficiency of the aqueous and ionic liquid FCDI systems (p < 0.0001). The optimal process conditions for the ionic liquid system fitted by the model were as follows: 6.6 wt% activated carbon content in the electrode slurry, a brine flow rate of 45 mL/min, an initial brine concentration of 1 g/L, and an electrolyte ratio of N, N-Dimethylformamide/1-ethyl-3-methylimidazolium tetrafluoroborate = 3.

The desalination effect of FCDI under the above optimal process conditions was up to 99.739 % at a voltage of 3.5 V, and the water-desalting efficiency […]

Enhanced operating voltage and desalination performance using ionic liquids as electrolyte for flow electrode capacitive deionisation – China2024-12-08T12:53:23+01:00

Impact of carrot extract and pomegranate juice on the structure, magnetic properties and Cr3+ ions removal efficiency of eco-friendly CoFe2O4 nanoparticles prepared via self-ignition technique – Egypt

The nanoparticles exhibited high specific surface areas of 498.49 and 538.17 m2/g for the Co-C and Co-P samples, respectively, contributing to an impressive adsorption capacity, with Co-P achieving 100 % Cr3+ removal within 30 min while Co-C achieved 99.6 % Cr3+ removal within 40 min.

These findings suggest that the green-synthesized cobalt ferrite nanoparticles, with their high surface area and mesoporosity, hold significant potential as effective agents for environmental remediation.

ANOVA analysis further underscored the significant influence of adsorbent dosage and contact time on removal efficiency, aligning well with the freindly isotherm model.

Impact of carrot extract and pomegranate juice on the structure, magnetic properties and Cr3+ ions removal efficiency of eco-friendly CoFe2O4 nanoparticles prepared via self-ignition technique – Egypt2024-12-06T17:00:54+01:00

Preparation of hydrophilic Cr-doped LiTi2(PO4)3 ion sieves with expanded cell structure for enhanced lithium extraction – China

Phosphate-based HTi2(PO4)3 was a novel lithium ion with a NASICON network structure. In this work, Cr doped was used to improve the adsorption performance by expanding the Li+ transport channel and increasing the hydrophilicity of the adsorbent. The crystal structure of Cr-LTPO-0.5 was characterized by XRD, XPS, Contact angle and FT-IR analysis, and the morphology of Cr-LTPO-0.5 was analyzed by SEM and HR-TEM.

Cr-HTPO-0.5 was obtained after acid washing of Cr-LTPO-0.5. The adsorption of Li+ on Cr-HTPO-0.5 was consistent with the Langmuir isothermal model and pseudo-2nd-order kinetic model, in which the adsorption was endothermic […]

Preparation of hydrophilic Cr-doped LiTi2(PO4)3 ion sieves with expanded cell structure for enhanced lithium extraction – China2024-12-06T16:57:43+01:00

Multi-level eco-friendly heat recovery process integrated into a gas turbine cycle of an innovative CCHP-desalination system: Assessment and optimization of the thermo-economic-environmental aspects – KSA

The planned setup encompasses an ammonia Rankine cycle, an organic Rankine cycle, an absorption chiller, a desalination unit, and a proton exchange membrane electrolyzer, resulting in reduced irreversibility and emissions.

The system’s capability is examined concerning exergy, energy, environmental, and economic aspects using Aspen HYSYS software. Furthermore, a comparative study is conducted between different optimization scenarios. According to the attained outcomes, maximizing vapor production requires a reduction in seawater flow.

Additionally, increasing the seawater flow rate is ineffective in the proposed process, as vapor from the desalination unit drives heat […]

Multi-level eco-friendly heat recovery process integrated into a gas turbine cycle of an innovative CCHP-desalination system: Assessment and optimization of the thermo-economic-environmental aspects – KSA2024-12-06T16:56:19+01:00

From comparison to integration: Enhancing forward osmosis performance prediction with mathematical and RBF neural network models – Republic of Korea

he mathematical model provided consistent predictions and insights into internal module dynamics, while the RBFNN exhibited high computational efficiency. However, the RBFNN showed limitations in predicting recovery accuracy for operational ranges with insufficient data. To address this, we introduced a data distance index to assess the reliability of RBFNN predictions, particularly in extrapolation scenarios.

We then integrated the approaches using the mathematical model for data imputation to expand the RBFNN’s training dataset. The integrated model, retrained with augmented data, achieved an R2 of 0.9920 and an RMSE of 0.3414 LMH for water flux prediction. […]

From comparison to integration: Enhancing forward osmosis performance prediction with mathematical and RBF neural network models – Republic of Korea2024-12-05T17:22:37+01:00
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