ADSORPTION SCIENCE & TECHNOLOGY
·
2018
·
IF 0.609
Liyun Yang,Xiaoming Qian,Zhi Wang,Yuan Li,Hao Bai,Hong Li
This study investigates the removal effectiveness and characteristics of phenanthrene and naphthalene using low-cost steel slag with batch experiments. The adsorption characteristics of steel slag were measured and analysed using X-ray fluorescence, X-ray diffraction, and Fourier transform infrared spectroscopy. The batch experiments investigated the effect of the time gradient, pH, and steel slag dosage gradient on the adsorption of the steel slag. The results show that with time and dosage of steel slag increased, the adsorption capacity of phenanthrene and naphthalene increased and gradually became balanced, but pH had no obvious effect on the adsorption of phenanthrene and naphthalene. The Langmuir isotherm model best describes the phenanthrene and naphthalene removal by the steel slag, which shows the adsorption occurring in a monolayer. The maximum adsorption capacity of the steel slag to phenanthrene and naphthalene is 0.043 and 0.041 mg/g, respectively. A pseudo-first-order kinetic model can better represent the adsorption of phenanthrene and naphthalene by steel slag. The research demonstrates that the steel slag has a certain adsorption capacity for phenanthrene and naphthalene.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Biology-Basel
·
2020
·Vol. 9
·期 7
·171
·
IF 3.796
Jianming Zhang,Yushan Bu,Chengcheng Zhang,Huaxi Yi,Daqun Liu,Jingkai Jiao
At present, De Man, Rogosa and Sharpe (MRS) broth is the medium of choice for promoting bacteriocin production. However, this medium is expensive and not applicable for large-scale production. Therefore, a low-cost and high-efficiency culture medium for bacteriocin Lac-B23 production byLactobacillus plantarumJ23 was developed. First, the effects of the composition of MRS broth on bacteriocin Lac-B23 production and bacterial growth were researched by a one variable at a time approach. Then, a Plackett-Burman design was used to screen significant components for production. Finally, the steepest ascent and central composite designs were used to obtain an optimum medium. The final composition of the modified MRS was much simpler than MRS broth, and the modified MRS contained only glucose, yeast extract, dipotassium phosphate, manganese sulfate monohydrate, Tween 80 and sodium acetate anhydrous. The highest bacteriocin Lac-B23 production reached 2560 activity units (AU)/mL in the modified MRS, which is nine times higher than that in MRS broth (280 AU/mL). Meanwhile, the cost per liter of the modified MRS (8.56 Ren Min Bi (RMB)/L) is 34.70% the cost of MRS broth (13.11 RMB/L), and the cost per arbitrary units of bacteriocin Lac-B23 in the modified MRS is approximately fourteen times more convenient (3.34 RMB/106AU) than in the MRS broth (46.82 RMB/106AU).Keywords:bacteriocin Lac-B23;low-cost;high-efficiency;culture medium
研究领域:
微生物学
·
食品科学
✓ 已验证
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Sheng Pang,Zhenqian Zhang,Liangwei Cong,Youpeng Xu,Guoyu Qian,Dong Wang,Laishi Li,Yusheng Wu,Zhi Wang
The conventional method for synthesizing Ti 2 SC depends on the reaction between TiS and TiC, which requires the utilization of costly Ti, TiC, or TiS 2 powders. Utilizing TiO 2 as the raw material for the synthesis of Ti 2 SC enables the cost-effective preparation of this compound. However, the optimization of the TiO 2 /C/X n S m (sulfides) system is of utmost importance when aiming to synthesize Ti 2 SC through carbothermal-sulfurization of TiO 2 , as the formation temperature of TiS and TiC greatly depends on the X n S m . In this study, the identification of the thermodynamically dominant region for the formation of TiS and TiC in the TiO 2 /C/X n S m systems was conducted by utilizing various sulfides (63 types). Considering factors such as the challenges associated with removing by-products, accessibility, and toxicity, FeS 2 was ultimately chosen as a highly promising candidate. Thanks to the low melting point of FeS 2 , Ti 3 O 5 , the preliminary carbothermal reduction product of TiO 2 , has achieved rapid-deep deoxidation and phase reconstruction processes in the molten phase. Meanwhile, unlike the conventional solid-solid sintering reaction , which often results in residual reactants that are challenging to eliminate. This novel one-step phase transformation process that occurs in the molten phase exhibits minimal impurity phases, apart from the by-product Fe. Ti 2 SC with a purity greater than 99 wt% was obtained when the TiO 2 /C/FeS 2 was pickled to remove Fe after sintering at 1600 °C for 5 min. This work will provide the theoretical basis and a new path for the low-cost preparation of sulfur-containing MAX phases.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
DESALINATION
·
2025
·
IF 9.8
Xingyu Fu,Minsi Shi,Dingyang Chen,Zixu Ren,Qing Bai,Rui Zhao
Extracting uranium from seawater through adsorption is an effective approach to ensure the sustainable development of nuclear energy. However, the currently developed adsorbents suffer from high cost or low adsorption efficiency. Herein, a low-cost and easily prepared bio-based adsorbent (TBAs) was synthesized from tannin via the phenol-aldehyde condensation. The preparation cost of TBAs was only $1.67 kg −1 , which was close to those of traditional low-cost adsorbents (e.g. activated carbons and zeolites). Moreover, TBAs had abundant active phenolic hydroxyl groups, which contributed to the high affinity toward uranyl ions. As a result, TBAs exhibited a high uptake of 897 mg g −1 in uranium spiked solution and good selectivity against common competing metal ions. Additionally, TBAs also displayed good reusability with an 8 % reduction in uranium adsorption capacity after twenty adsorption-desorption cycles. For practical uranium extraction from natural seawater, TBAs could be loaded on melamine foam to obtain macroscopic adsorbent (MF@TBAs). An extraction capacity of 4.2 mg g −1 from natural seawater within 16 days could be achieved, which surpassed most of reported bio-adsorbents. Significantly, the total economic cost of uranium extraction by MF@TBAs was $43.7–62.6 per kg of uranium, lower than that of currently available uranium adsorbents. All the above results indicate that TBAs have great potential in the field of economical uranium extraction from seawater.
研究领域:
材料科学
·
环境科学
·
核能工程
✓ 已验证
产品关联
DOI
高影响因子
ACS ES&T Water
·
2025
·
IF 4.3
Kuang Wang,Guan Wang,Bin Zheng,Haowei Zeng,Zhanqiang Fang
The large-scale remediation of polybrominated diphenyl ethers (PBDEs) is often limited by the high manufacturing costs of conventional reductants. We developed a cost-effective method to synthesize submicron pyrite (FeS2bm) through simple ball milling of inexpensive pyrite. The mass-normalized removal rate constant of FeS2bm for BDE-209 reached 1.6 mg min–1 g–1, surpassing previously reported reductants. Ball milling reduced the particle size to 13% of pristine pyrite and increased the specific surface area by 17-fold while removing the oxide layer without altering the crystal structure. The electron transfer capacity of pyrite improved, and kinetic studies showed a positive correlation between the rate constants for BDE-209 removal and milling time, with strong correlations (R2 > 0.97) observed among rate constant, pH, debromination rate, and iron-dissolution rate. Mechanistic investigations indicated that degradation occurred primarily via adsorbed Fe(II) and dissolved Fe2+. Analysis of degradation products indicated a maximum debromination depth of hexa-BDEs, with predominant products distributed in the hepta-BDE to octa-BDE range, possibly exhibiting higher toxicity. Comparative cost analysis showed that the manufacturing cost of FeS2bm is only 1/303 of that of nanoscale zerovalent iron (nZVI). High removal efficiencies of BDE-209 by FeS2bm were achieved in groundwater matrices. Consequently, FeS2bm emerges as a promising reductant for the cost-effective degradation of BDE-209, showcasing significant potential for practical applications.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2022
·
IF 13.599
Xiaoqi Liu,Tianyu Li,Zhizhang Yuan,Xianfeng Li
Long duration energy storage (LDES) technologies are vital for wide utilization of renewable energy sources and increasing the penetration of these technologies within energy infrastructures. Herein, we propose a low-cost alkaline all-iron flow battery by coupling ferri/ferro-cyanide redox couple with ferric/ferrous-gluconate complexes redox couple. The designed all-iron flow battery demonstrates a coulombic efficiency of above 99% and an energy efficiency of ∼83% at a current density of 80 mA cm −2 , which can continuously run for more than 950 cycles. Most importantly, the battery demonstrates a coulombic efficiency of more than 99.0% and an energy efficiency of ∼83% for a long duration (∼12, 16 and 20 h per cycle) charge/discharge process. Benefiting from the low cost of iron electrolytes, the overall cost of the all-iron flow battery system can be reached as low as $76.11 per kWh based on a 10 h system with a power of 9.9 kW. This work provides a new option for next-generation cost-effective flow batteries for long duration large scale energy storage.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Cai Qi,Shuhan Wang,Xukun Zhu,Tong Zhang,Yanju Gou,Zexin Xie,Yachao Jin,Yao Wang,Li Song,Mingdao Zhang
The green and low-cost recycling of spent LiFePO 4 (LFP) cathode materials has become an urgent problem to be solved. In this work, a completely green and easy scale-up recycling process is developed to recycle the cathode powders from spent LFP batteries. The optimal regeneration conditions are obtained by adjusting temperature, Li + concentration and reductant dosage. Meanwhile, the mechanism of regeneration is investigated by microscopic characterization and electrochemical performance testing. The regenerated LFP shows a good discharge specific capacity of 148 mAh/g at 0.05 C, which exhibits around 96% the capacity of raw LFP. Additionally, the costs of the consumption only account for 19.8% the price of raw LFP, which indicates that this method has good prospect of economic returns. This regeneration method is low in cost, simple in process, mild in conditions and easy to scale up, providing technical supports for the sustainable development of lithium-ion battery industry.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2020
·
IF 3.83
Ruiyang Tan,Jintang Zhou,Zhengjun Yao,Bo Wei,Zhong Li
Recently, microwave absorbing materials have been widely used with the development of electromagnetic wave technology such as 5G communication. It is urgent to develop low-cost electromagnetic wave absorbing materials to meet the increasing civil market demand. Herein, we report a novel and simple strategy to synthesize lightweight silicon carbide microwave absorber by calcining tissue and glass microspheres at high temperature. The results show that higher synthesis temperature can improve the crystallinity of SiC, generate more whiskers and reduce the impurity content. This in turn increases the dielectric loss of the material. The products synthesized at 1600 °C have excellent microwave absorption properties. At the thickness of 1.3 mm, it achieves a reflection loss of −32.5 dB and an effective absorption bandwidth of 4.1 GHz. This study broadens the way for the potential reuse of waste paper and glass, and provides a useful reference for the preparation of low-cost microwave absorbing materials.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
Catalysts
·
2021
·Vol. 11
·期 2
·169
·
IF 4.146
Yan Tan,Yijun Yin,Xianhong Yin,Chenghao Lan,Yu Wang,Feilong Hu,Qin Huang,Yan Mi
The pursuit of low-cost and high-efficiency catalyst is imperative for the development and utilization of hydrogen energy. Heteroatomic doping which is conducive to the redistribution of electric density is one of the promising strategies to improve catalytic activity. Herein, the Se-doped CoS2porous nanowires array with a superaerophobic surface was constructed on carbon fiber. Due to the electronic modulation and the unique superaerophobic structure, it showed improved hydrogen evolution activity and stability in urea-containing electrolyte. At a current density of 10 mA cm−2, the overpotentials are 188 mV for hydrogen evolution reaction (HER) and 1.46 V for urea oxidation reaction (UOR). When it was set as a cell, the voltage is low as 1.44 V. Meanwhile, the current densities of HER and UOR, as well as of cell remained basically unchanged after a continuous operation for 48 h. This work opens up a new idea for designing of cost-saving hydrogen evolution electrocatalysts.Keywords:superaerophobic;cost-saving hydrogen evolution;heteroatom doping;electronic adjustment
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Yichong Li,Han Zhang,Huizhong Zhao,Jun Yu,Jiuhong Ma,Li Feng,Yanli Liu
Management and utilization of solid waste are necessary for sustainable development in the metallurgical industry. This study focuses on the use of ferrotitanium slag (FTS) as a low-cost source of hibonite in the refractory lining of an aluminum-melting furnace. FTS enhances the resistance of castable samples to cryolite melt penetration but reduces their bulk density and cold mechanical strength . To explain this enhancement mechanism, we present a model in which the Al 2 O 3 and SiO 2 components in the castable samples react with the cryolite melt to form a high-viscosity barrier layer against the molten cryolite. Moreover, the well-developed calcium hexaaluminate crystals in FTS, which show excellent resistance against Na + and F − , prevent the penetration of cryolite melt through the FTS aggregate area, and reduce the penetration speed. By promoting high-efficiency resource utilization, this study contributes to the development of a circular economy in the metallurgical industry.
研究领域:
冶金学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2020
·
IF 4.3
Jiechen Ma,Wei Huang,Xuesheng Zhang,Yucheng Li,Ning Wang
The target of this research was to explore the adsorption characteristics and mechanisms for the adsorption of copper and cadmium by lobster shell biochar. Two biochars were produced from lobster shells through pyrolysis at 300 and 600℃ (labeled LS300 and LS600). The kinetics and isotherm adsorption curves of Cu 2+ and Cd 2+ on these lobster shell biochars were determined. The adsorption kinetic curves were best depicted by the two-compartment model, and the Toth model was suitable for the isotherm data of Cu 2+ and Cd 2+ . Compared with those of LS300, the adsorption capacities of LS600 for Cu 2+ and Cd 2+ were greater. The original biochar and Cu 2+ or Cd 2+ -loaded biochar were analyzed by SEM-EDS, FTIR, and XRD to explore the adsorption mechanisms. Ion exchange with cations, precipitation with minerals, and interaction with functional groups were the potential mechanisms for the adsorption of Cu 2+ and Cd 2+ by the lobster shell biochars. The contribution rates of these three mechanisms were also calculated. The adsorption mechanism of Cu 2+ onto the prepared biochar was dominated by ion exchange, while cation exchange and interaction with functional groups were the primary adsorption mechanisms of LS300 and LS600 for Cd 2+ , respectively. Moreover, the adsorption capacity of lobster shell biochar was higher than that of other reported biochars. The results of this study indicate that lobster shell biochar is a highly effective adsorbent for the removal of Cu 2+ and Cd 2+ from contaminated water.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Jin Zhang,Jianguo Zhao,Wenshan Qu,Xinyu Li,Zhenxing Wang
Various oils discharged from daily life and industrial production, as well as frequent oil spillages, have led to severe water pollution and ecological problems. Mussel-inspired polydopamine has been widely applied for fabrication of superhydrophobic materials for oil/water separation. However, the need of additional nanoparticles via tedious steps to construct nanostructures , and the high cost of dopamine itself limit its practical applications. Moreover, the application modes of superhydrophobic materials for oil/water separation are monotonous, which will limit the applied range of the superhydrophobic materials. For example, superhydrophobic sponge was usually used for adsorbing oil droplets or oil spills from water, while superhydrophobic fabric or mesh was usually used for separating bulk layered oil/water mixture. Therefore, developing simple and low-cost mussel-inspired surface modification strategy toward superhydrophobic materials, as well as diverse application modes for oil/water separation, is still highly desired. In this study, superhydrophobic sponge and fabric with nanostructures, which exhibits excellent performance for diverse oil/water separation, have been fabricated through a novel one-step and cost-effective mussel-inspired approach. The resultant superhydrophobic sponge exhibits outstanding oil absorption capability (weight gains up to 8860%), while the superhydrophobic fabric can effectively separate oil/water mixture. Moreover, diverse modes for oil/water separation have been developed for the first time. For example, water-in-oil emulsion can be highly-efficient separated by a compressed superhydrophobic sponge (~1800L m -2 h −1 bar −1 for water-in-oil emulsion, and above 99% rejection rate for water droplets), while crude oil spills can be efficiently collected by a superhydrophobic boat (above 98%).
研究领域:
材料科学
·
环境科学
✓ 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）