Desalination and Water Treatment
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2024
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IF 1
Cheng-Han Lee,Pin-Han Chen,Wei-Sheng Chen
Boron has a high applied value from the past to now. It can be used in composite material, aerospace industry, semiconductor industry, and many other areas. Nonetheless, boron resources are only located in some countries, so it is strenuous to acquire. To obtain more boron and reach the goal of resources circulation, boron was recovered from the desalination brine through Amberlite IRA 743 resin in this study. Because extreme climate change makes people have insufficient freshwater, desalination technology has matured since the 20th century. Although it can cope with freshwater scarcity, the by-product, brine, is detrimental to the environment. The only merit of brine is that it is a concentrated solution, so the boron concentration in brine is higher than in some ores. This recovering system then uses the characteristics of brine to get boron. The research could be divided into three parts. First, the adsorption isotherm model was investigated, and the saturated adsorption capacity of boron through Amberlite IRA 743 resin was 74.34 mg/g and conformed to the Langmuir model. The second part surveyed the optimal parameters of boron adsorption through Amberlite IRA 743 resin. The results revealed that 18.9 mg/L of boron could be fully adsorbed from brine under pH 10, L/S ratio of 200, contacting period of 128 min, and temperature at 328 K. On the other hand, different agents would be tested to desorb the boron from the resin, and the boron product could be generated. In a nutshell, through this research, people can reduce the side effect of brine and circulate boron resources in an eco-friendly method.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
DESALINATION
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2023
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IF 9.9
Xi Wu,Zhiwei Chen,Yibo Lv,Youwen Zhang,Shiming Xu,Xiaojing Zhu
In order to simultaneously produce hydrogen and reduce the salinity of concentrated wastewater (brine) from the desalination plant , a lab-scale reverse electrodialysis (RED) hydrogen production system driven by salinity gradient energy is designed and its performance is experimentally studied. The energy conversion of the RED system is found affected by the ionic compositions of the desalination concentrated brine (DCB). The effects of ionic types (multivalent cation, anion, and phosphorous salt) and ionic concentration (from 0.01 to 0.05 M) and pH of DCB (from 5 to 11) on the hydrogen production are investigated. The results show that the existence of multivalent ions in brine significantly degrade the capability of output voltage and hydrogen production of the RED system. Compared to the control group, the additions of 0.05 mol·L −1 NaBr and 0.05 mol·L −1 FeCl 3 into the simulated brines lead to the output voltage drops of 29 % and 60 %, respectively, when the current is maintained at 0.2A. Additionally, the experiment yields an MHP of 128 mL·h −1 at the current of 0.3A. Generally, the performances of the RED stack can be improved as increasing the pH of an acidic DCB, but declined as the increasing the pH of an alkaline DCB.
研究领域:
环境科学
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能源工程
✓ 已验证
产品关联
DOI
高影响因子
Desalination and Water Treatment
·
2024
·
IF 1
Cheng-Han Lee,Wei-Sheng Chen,Jun-Yi Wu
Cesium can be widely used in many industries now. However, the primary reservoir of cesium is often located in high mountains and deserts, so it is challenging to obtain cesium resources. To solve this problem, cesium was recovered from waste desalination brine through Dowex G26 resin in this study. Due to the lack of water resources, desalination technology was developed since the 20th century. Nevertheless, its by-product, brine, is harmful to the environment. To reduce the threat of waste brine, this experiment aims to provide a simple procedure to recover cesium resources from brine. The study could be divided into three parts. First, the adsorption isotherms and the thermodynamics parameters such as enthalpy, entropy, and Gibbs free energy of cesium adsorption were investigated. In the second part, the batch experiments would explore the optimal adsorptive period, pH value, and liquid-solid ratio (L/S ratio) of cesium adsorption through Dowex G26 resin. The results showed that the adsorption of cesium fit with the Langmuir model, and the reaction was spontaneous. On the other hand, cesium could be recovered efficiently under the conditions of 4 min of contacting time, pH 9, and L/S ratio of 1,000. After adsorbing, the cesium could be desorbed through nitric acid, and solid cesium nitrate would be obtained by drying the desorbed solutions. In the end, the Dowex G26 system would be compared with the t-BAMBP/kerosene system and t-BAMBP/C 2 mimNTf 2 system to demonstrate its advantages and drawbacks.
研究领域:
环境科学
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化学工程
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材料科学
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资源回收技术
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吸附技术
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
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2025
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IF 11.3
Liuqian An,Peizhi Wang,Aiwen Wang,Lu Liu,Yu Han,Xi Chen,Yumeng Zhao,Daxiang Yang,Aijie Wang,Jun Ma,Hongbo Xu,Wei Wang
Solar interfacial distillation (SID) is a highly economical and environmentally friendly freshwater obtaining technology. Although the energy efficiency for water evaporation is approaching 100%, the yield of clean liquid water still remains at a relatively low level, primarily due to inefficient condensation driving force and unstable light absorbance caused by uncondensed fog droplets. Here, we present a wavelength-anisotropic conductive interface solar distillation system (WADS) that fundamentally redefines energy flow management. By spectrally decoupling solar absorption (0.2–2.5 μm) from thermal radiation (8–13 μm), WADS achieves the simultaneous enhancement of photothermal conversion and passive radiative cooling. This dual-mode operation enables directional energy transport─sunlight influx through transparent channels and heat dissipation via high-emissivity nanostructures─establishing a self-sustaining thermal gradient that amplifies condensation kinetics while suppressing light scattering. Based on the above design, the clean liquid water production with 3D photothermal component reached 4.03 kg·m–2·h–1 under 1 sun, representing a 10-fold improvement over conventional SID, with nighttime production (0.75 kg·m–2·h–1) through continuous radiative cooling. Beyond desalination, WADS demonstrates a synergistic resource recovery from brines, enabling efficient mineral preconcentration. This integrated energy-loop architecture presents a new paradigm for addressing coupled water-energy-resource challenges.
研究领域:
可再生能源
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水净化技术
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材料科学
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可持续工程
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热管理
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）