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
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Lei Mao,Yaxin Chen,Ruifang Zhang,Chun Yang,Yanhong Zhou,Guangya Zhang
The utilization of carbonic anhydrases (CAs) for CO2 capture aligns with the principles of environmental sustainability. However, there is an urgent need to minimize the cost of CA purification while improving their performance in harsh environments. A novel strategy was proposed to solve the above problems by employing the ferritin-tagged CA variant (DvCA8.0-F). The purification is achieved by low-speed centrifugation, yielding 92% activity recovery and 95% purity. After 14 weeks of incubation in a 50% MDEA solution at 50 °C, DvCA8.0-F maintained activity nearly equivalent to the initial activity, which showed remarkable stability compared to the free ones. Encouragingly, DvCA8.0-F had a yield of up to 800 mg/L, allowing for cost-effective CA-assisted CO2 absorption and desorption in MDEA solutions. The results show that DvCA8.0-F reduced the absorption time from 70 to 50 min at 40 °C and desorption time from 40 to 25 min at 96 °C in 25%MDEA+1%[N1111][Gly] solution with a final CO2 load and a stripped amount of CO2 at the same time. DvCA8.0-F exhibits the maximum reaction rate at 96 °C; the CO2 regeneration efficiency improved from 60% at 87 °C to 72%. When the concentration of DvCA8.0-F was 1.5 g/L, the absorption rate of CO2 reached about 90% of that of the 25% MEA solution. These results demonstrate the simplicity of preparation and the outstanding properties of DvCA8.0-F, which paves a feasible way for CA-assisted CO2 capture. This exciting strategy may also have excellent potential in enzymes for innovative chemical synthesis to achieve the sustainable development of green chemistry.
研究领域:
生物化学
·
环境科学
·
绿色化学
✓ 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 Environmental Chemical Engineering
·
2025
·
IF 7.2
Ruiqi Liu,Lihong Wang,Tao Lan,Jin Hua,Jingxuan Zhang
In this study, an innovative method for preparing biochar aimed at enhancing the QuEChERS pesticide residue analysis pretreatment technology was developed. The method is ecofriendly and cost-effective. A microporous biochar with a high specific surface area (351.43 m²·g −1 ) was successfully produced using corn stover as the raw material. The preparation process involved sodium hypochlorite delignification, hydrothermal pyrolysis, and slow pyrolysis. This biochar effectively removes pigments and lipids from chrysanthemum extracts, and its three-dimensional structure offers additional adsorption sites for planar compounds and sulfonylurea pesticides. The cost for preparing biochar is approximately 0.5 USD/g, which is significantly lower than that of traditional GCB, offering substantial advantages in both cost and environmental sustainability. The biochar developed in this study not only provides an efficient and economical material for pesticide residue analysis pretreatment but also contributes significantly to the advancement and application of ecofriendly pesticide residue detection technologies.
研究领域:
环境科学
·
分析化学
✓ 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
Materials Today Communications
·
2023
·
IF 3.8
Hongyu Chen,Yunfei Wang,Jianing Wang,Yajuan Wang,Wenyan Liu
In recent years, CuInS 2 quantum dots have shown great potential for various applications due to their wide excitation wavelength range, symmetric emission wavelength range, long fluorescence lifetime and optical stability. However, the high cost of indium (In) limits its commercialization. In this study, we partially substituted the expensive In element with more affordable and abundant aluminum (Al) to reduce the cost of CuInS 2 quantum dots. CuInS 2 , CuAlInS, CuInS 2 /ZnS and CuAlInS/ZnS core/shell quantum dots were synthesized using one-pot method. Due to the incorporation of Al, their photoluminescence (PL) spectra exhibit a blue shift of about 5 nm. A time-resolved PL measurement indicated that the PL lifetime of the quantum dots was a characteristic feature of three dominating transitions from the conduction band to surface defect level, from the conduction band to an acceptor level, and from the donor level to an acceptor level. The temperature-dependent PL proves that after the introduction of Al, the FWHM of quantum dots does not show significant broadening with increasing temperature. Finally, CuInS 2 /ZnS and CuAlInS/ZnS quantum dot phosphor LEDs are produced. The brightness of the CuAlInS/ZnS quantum dot phosphor LED is slightly higher than that of CuInS 2 /ZnS quantum dot phosphor LEDs. The red-emitting CuAlInS/ZnS quantum dot phosphor LED with easy fabrication and no need for encapsulation can compensate for the lack of red light in warm white LED applications in future research.
研究领域:
材料科学
·
半导体物理
·
光电
✓ 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
FOOD CHEMISTRY
·
2020
·
IF 6.306
Xin Chen,Zhiwen Guo,Junjie Zhang,Yingying Li,Rui Duan
The denaturation temperature of collagen has been determined using several methods, such as circular dichroism, fourier transform infrared spectroscopy, and differential scanning calorimetry, etc. Such methods need specific equipment or mass samples (more than 75 mg samples), which means higher inspection costs. In this study, Sirius red was employed to determine the Tds of collagen from calf tendon, silver carp skin, frog and salmon skins (38.2 °C, 32.6 °C, 33.8 °C, and 15.6 °C, respectively) to explore a new method that does not require special equipment and only needs 2–3 mg sample for one measurement. This method was suitable for the determination of the denaturation temperature of collagen from terrestrial, aquatic and amphibian animals. Analysis of variance and t -test revealed that no significant difference was found between Sirius Red and viscosity methods. However, the Sirius Red method needs simpler equipment and less sample than viscosity and other methods. So it could be used as a convenient approach to determine the denaturation temperature of collagen instead of the viscosity method.
研究领域:
生物化学
·
材料科学
✓ 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）