BIORESOURCE TECHNOLOGY
·
2020
·
IF 7.539
Ying Zang,Yuan Yang,Yisong Hu,Huu Hao Ngo,Xiaochang C. Wang,Yu-You Li
Pre-concentrated domestic wastewater (PDWW) rich in organic matters can be a suitable substrate for anaerobic digestion (AD) towards holistic resource and bioenergy recovery. Micron zero-valent iron (ZVI) was applied in designed batch experiments during anaerobic treatment of PDWW to verify its roles in performance enhancement and associated mechanisms. In the selected range of food to microorganism (F/M) ratio, 0.5 gCOD/gMLVSS was most appropriate as biomethane production potential (BMP) of 0.275 L CH 4 /gCOD was obtained. The optimal ZVI dosage at fixed F/M of 0.5 was 6 g/L, further enhancing the BMP by 15.2%. Furthermore, ZVI improved the hydrolysis process (producing more soluble organics) and regulated acidification process (affecting volatile fatty acids distribution). No obvious impact on acetoclastic and hydrogenotrophic methanogenesis processes was noted with ZVI addition. ZVI based AD of the PDWW is promising for promoting the practical application of advanced domestic wastewater treatment strategy (pre-concentration plus anaerobic digestion).
研究领域:
环境科学
·
微生物学
✓ 已验证
DOI
高影响因子
Advanced Composites and Hybrid Materials
·
2024
·Vol. 7
·期 4
·1-11
·
IF 23.2
Ma Wencan,Lin Yan,Huang Caoxing,Amin Mohammed A.,El-Bahy Salah M.,Melhi Saad,Ragauskas Arthur J.,Fang Guigan,Huang Chen
The smart home, constructed with plenty of electronic devices, has received great attention in human life. In this system, triboelectric nanogenerator (TENG) plays an important role due to its simple preparation, high output voltage, and high energy conversion efficiency. However, the extensive usage of nondegradable polymers as the friction layer inevitably causes environmental issue, and also the conventional conductive electrode using metal may result in the accommodation of metal. Herein, a fully wood-based single electrode triboelectric nanogenerator (FW-TENG) is proposed for the first time, in which a porous structure is generated with the delignification process and the wood-based friction layer exhibited good flexibility. In addition, the FW-TENG with wood-derived carbon as the electrode delivered high output voltage, current density, and power density of 208 V (580 kV m −2 ), 167 mA m −2 , and 4.86 W m −2 , outperforming other TENGs. Furthermore, the triboelectric nanogenerator could generate different electrical signals via contacting different objects and harvest energy from various human motions. Simultaneously, the application of the FW-TENG for smart home is also demonstrated. This study may provide a green and facile strategy for fabricating the eco-friendly triboelectric nanogenerator with excellent output electrical performance and degradability.
研究领域:
材料科学
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能源技术
·
环境科学
✓ 已验证
DOI
高影响因子
Environmental Science-Water Research & Technology
·
2022
·Vol. 8
·期 8
·1665-1674
·
IF 5.819
Ruixin Qu,Shunke Ding,Haixin Li,Pin Wang,Lixing Pan,Wenhai Chu
Our recent study validated that household cooking with seaweed salt and chloraminated water can significantly promote iodinated disinfection by-product (I-DBP) formation. Given that several disinfectants might coexist or partially exist in tap water, it is necessary to investigate the effect of disinfectant species (chlorine, monochloramine, and organic chloramine) on I-DBP formation from seaweed salt. The results showed that iodinated trihalomethanes (I-THMs) formed with disinfectant species followed the order: monochloramine > chlorine > in situ organic chloramine ≥ preformed organic chloramine. As reaction temperature and time raised, I-THM formation increased and then decreased. The slight decrease of I-THMs at a high temperature (95 °C) during chlorination and chloramination resulted from the hydrolysis and volatilization of THMs, whereas the instability of organic chloramines at high temperatures (80 °C and 95 °C) resulted in the significant reduction of I-THMs. Owing to the addition of seaweed salt, the I-THM concentrations in two realistic tap waters (chlorination and chloramination) after simulated household cooking significantly increased by ∼2 orders of magnitude to 119.6 μg L−1 and 245.3 μg L−1, concurring with the growth of bioassay-based and the calculated additive cytotoxicity to Chinese hamster ovary cells. This study demonstrated that the I-DBP concentration of tap water for epidemiological exposure assessments might underestimate the potential health risk of I-DBPs formed from household cooking with seaweed salt.
研究领域:
环境科学
·
公共卫生
·
毒理学
✓ 已验证
产品关联
DOI
高影响因子
CHEMOSPHERE
·
2020
·
IF 5.778
Xiaolong Yao,Ke Wang,Wan Wang,Tingting Zhang,Wei Wang,Xiaoyang Yang,Feng Qian,Hailong Li
Household coal combustion is identified to be the second largest emission source of polycyclic aromatic hydrocarbons (PAHs) in China. In this study, ferroferric oxide (Fe 3 O 4 ) was used as a coal burning additive to reduce PAHs emission from coal combustion in a household coal stove. The results showed that Fe 3 O 4 participated in the coal combustion process. The addition of Fe 3 O 4 reduced the release of PAHs during the coal combustion process, and could improve the residence capacity of ash residue to these PAHs. Toxic equivalent quantity (TEQ) of PAHs in flue gas from combustion of coal mixed with Fe 3 O 4 was less than that from the raw coal combustion. For a typical combustion temperature of 850 °C, the TEQ of PAHs for the mixture of coal and 2.0 wt % Fe 3 O 4 decreased 21.98% compared to that for the raw coal. The abundant active surface oxygen species originated from the phase transformation of iron oxides probably accelerated the cracking of PAHs, and hence led to the reduction of PAH emissions and their TEQ. The study could help to develop new technology for reduction of PAHs emission from household coal combustion.
研究领域:
环境科学
·
能源与燃料
·
化学工程
✓ 已验证
DOI
高影响因子
WATER RESEARCH
·
2022
·
IF 13.4
Menglin Wu,Shunke Ding,Zhongqi Cao,Zhenqi Du,Yuyang Tang,Xiaoyan Chen,Wenhai Chu
Iodinated disinfection by-products (I-DBPs) have attracted extensive interests because of their higher cytotoxicity and genotoxicity than their chlorinated and brominated analogues. Our recent studies have firstly demonstrated that cooking with seaweed salt could enhance the formation of I-DBPs with several tens of μg/L level. Here, I-DBP formation and mitigation from the reaction of disinfectant with Laminaria japonica (Haidai), an edible seaweed with highest iodine content, upon simulated household cooking process was systematically investigated. The total iodine content in Haidai ranged from 4.6 mg-I/g-Haidai to 10.0 mg-I/g-Haidai, and more than 90% of iodine is soluble iodide. During simulated cooking, the presence of disinfectant simultaneously decreased iodide by 15.0–32.8% to 2.7–5.8 mg/L and increased total organic iodine by 1.3–10.9 times to 0.5–1.8 mg/L in Haidai soup, proving I-DBP formation. The concentrations of iodinated trihalomethanes and haloacetic acids were at the levels of several hundreds of μg/L and several μg/L, respectively, which are 2–3 orders and 1–2 orders of magnitude more than those in drinking water . Effects of key factors including disinfectant specie, disinfectant dose, temperature and time on I-DBP formation were also ascertained, and temperature and disinfectant specie played a decisive role in the formation and speciation of I-DBPs. In order to avoid the potential health risk from the exposure of I-DBPs in Haidai soup, it is prerequisite to soak and wash dry Haidai sample over 30.0 min before cooking, which could effectively remove major soluble iodide. In general, this study provided the new insight into I-DBP formation from daily household cooking with Haidai and the corresponding enlightenment for inhabitants to eat Haidai in daily life.
研究领域:
环境科学
·
食品安全
·
毒理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Water Process Engineering
·
2024
·
IF 6.3
Linlin Hao,Gewei Feng,Zengli Zhai,Mingxuan Li
It has been accepted that limiting phosphate is a prerequisite for bacterial inactivation in tap water. La 2 O 3 nanoparticles were loaded onto polypropylene (PP) fibers through the method of melt spinning. Hydrophilic modification of the adsorbent surface was performed using polyethyleneimine (PEI) to prepare PEI/La 2 O 3 /PP. The results indicated that the optimal loading amount of La 2 O 3 was 1 %, and the optimal concentration of PEI was 1 %. The successful loading of La 2 O 3 resulted in a roughened fiber surface and increased fiber diameters . After PEI modification the water contact angle was reduced from 98° to 50°. The pH zpc of PEI/La 2 O 3 /PP was determined to be 8.3. The co-existing ions have little effect on phosphate adsorption. Phosphate adsorption can be well described by Redlich-Peterson model with a maximum K R-P of 3.98 × 10 −5 L/mg. Adsorption kinetics fit well with the pseudo-second-order reaction equation. The activation energy (E a) is determined to be 57.9 kJ/mol, providing the evidence of chemical nature of the reaction involving phosphate ions on the surface of PEI/La 2 O 3 /PP. The PEI/La 2 O 3 /PP adsorbent can reduce the phosphate concentration in tap water to below 0.01 mg/L, leading to a reduction in Escherichia coli concentration from approximately 10,000 CFU/mL to around 10 CFU/mL. The survival rates of Escherichia coli in a multi-nutrient environment are higher than in a single phosphate source environment. Our research provides a new feasible approach for ensuring microbial water quality safety in household water purifiers.
研究领域:
环境科学
·
材料科学
·
微生物学
✓ 已验证
产品关联
DOI
高影响因子
LATIN AMERICAN RESEARCH REVIEW
·
2022
·Vol. 46
·期 3
·133-156
·
IF 1.272
Liliana R. Goldín
In-depth interviews and a three-wave longitudinal study of workers in international export-processing plants (maquiladoras, referred to here as maquilas) of the central highlands of Guatemala were conducted to explore the effects of labor turnover on individuals and households. The data suggest a framework in which labor conditions and sources of support at home are linked to turnover of youths working in the maquila. Turnover in the study is associated with decreased input into important household decisions and a lowered sense of adjustment and life satisfaction. Despite this, turnover is often volitional, representing a form of resistance and response on the part of workers to adverse working conditions in the factories. The study reveals the complex dynamics underlying both involuntary and voluntary turnover in the maquilas.ResumenPor medio de entrevistas en profundidad y una encuesta longitudinal en tres rondas con trabajadores de las industrias internacionales procesadoras para exportación (maquilas) del altiplano central de Guatemala, se exploraron los efectos de la rotación laboral en individuos y hogares. Los datos sugieren un marco en el que las condiciones de trabajo y las fuentes de asistencia y sustento en el hogar están ligadas a la rotación de los jóvenes trabajadores. En el estudio, la rotación aparece asociada con una menor contribución por parte del trabajador a las decisiones importantes del hogar y una disminución en el sentimiento de ajuste personal y satisfacción de vida. A pesar de esto, la rotación es con frecuencia voluntaria y representa una forma de respuesta y resistencia por parte de los trabajadores a las adversas condiciones de trabajo en las fábricas. El estudio revela la compleja dinámica que subyace a la rotación voluntaria e involuntaria en las maquilas.
研究领域:
劳动社会学
·
全球资本主义研究
·
发展人类学
·
劳工研究
·
社会转型
✓ 已验证
DOI
高影响因子
AMERICAN SOCIOLOGIST
·
2002
·Vol. 33
·期 3
·21-57
·
IF 0
Richardson Barbara
Best known as the first woman graduate from MIT, and the founder of Home Economics, Ellen Swallow Richards was a Progressive Era reformer who applied social science research techniques to problems of concern to early sociologists. As a mentor to many women who joined the “Cultural” and “Pragmatic” feminists of Hull House, her secular theories of “Oekology” and “Euthenics” challenged many of the models of social change prevalent in the Cambridge and Chicago academic communities. Her most radical contribution as a feminist was her assertion that women’s unpaid labor in the home played a vital economic role in maintaining capitalism and was the ultimate source of their second-class citizenship. She shared a belief in democracy and education as a feminist “Pragmatist,” and laid the groundwork for the contemporary “Ecofeminist” movement. Although she was a biochemist by training, she engaged several genera-tions of women in the application of scientific methods to the solution of contemporary social problems. As a political organizer, much of her legacy is reflected in the accomplishments of the reform organizations she was instrumental in founding.
研究领域:
社会学
·
女性研究
·
环境科学
·
公共健康
·
教育学
·
应用社会科学
✓ 已验证
DOI
Nano Energy
·
2022
·
IF 19.069
Youwei Zhao,Xiang Li,Ningle Hou,Tian Yuan,Shuhong Huang,Ling Li,Xiaoting Li,Wenming Zhang
Self-powered sensors that can continuously and accurately detect physiological signals without an external power source are the key technology to realize wearable electronic devices as the next generation of sensors. However, the manufacturing of self-supporting electronic systems based on versatile materials is still facing significant challenges. Herein, we introduce a new one-body strategy, zinc ion battery (ZIB) is the technology of flexible sensor energy supply, the technology uses a rechargeable solid-state zinc ion battery with multiple charging modes as the energy supply unit (405.07 mAh g −1 ), and the electrode material is used as the sensitive layer of the flexible pressure sensor, which greatly improves the sensitivity (S=5.64 *10 5 kPa −1 ) of the pressure sensor through layer assembly technology. This pressure sensor possesses good flexibility, fast response/recovery time (60.0/80.0 ms), stable long-term response, excellent cycle stability (8000 times) and wide pressure detection (50 Pa-70,000 Pa). We believe that the design of the self-powered sensor integration system will open up a new and versatile platform for the next generation of autonomous power electronics in smart home applications.
研究领域:
材料科学
·
电子工程
·
生物医学工程
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Jingqing Liu,Hening Cui,Tuqiao Zhang,Xiaowei Liu,Lili Wang
Antibiotic resistance genes (ARGs) have become an increasing threat to human health. Membrane-based technologies have been applied to address multiple concerns regarding the quality of household drinking water (HDW), including ARGs. However, the long-term operation of membrane-based HDW purifiers would inevitably lead to biofouling, making the membrane turn from cleaner to a secondary pollution source. This study proposed a strategy based on quorum sensing inhibitor (QSI) to control ARGs in the finished water of HDW purifiers. Three reported QSIs, vanillin (VL), cranberry extracts (CBETs), and tannic acid (TA), were selected to investigate their effects on the removal of ARGs by typical HDW purifiers, and the corresponding influencing mechanism was elucidated. The results indicated that ARGs leakage occurred in the absence of QSI but disappeared with the addition of VL, CBETs, and TA. The introduction of VL increased the guarantee rate of ≥ 3 log ARGs removal increased from 63.3 to 70% (control group) to 88.9–100%. The influencing mechanism of QSIs on ARGs removal by membrane filtration can be attributed to direct effect (direct inactivation of the ARGs host) and indirect effects (adjusting the physiochemical properties of the membrane surface and bioaccumulation). This study provides data on the regulatory mechanisms of biofouling induced by QSI and proposes a new strategy for ARGs control by membrane-based processes.
研究领域:
环境工程
·
微生物学
·
水处理
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Nano
·
2023
·
IF 10.3
Y. Zhao,X. Li,N. Hou,S. Huang,T. Yuan,H. Wang,A. Zhang,L. Li,X. Li,W. Zhang
Wearable sensor technology with self-charging power supply systems is attracting attention both in the field of energy supply and sensing. However, traditional self-powered sensor integration systems are highly dependent on energy availability and often have complex configurations. We have briefly reported on a sustainability-oriented integration strategy that involves developing multifunctional materials that can fully utilize air, sunlight, and chemical solutions to explore original charging methods for zinc-ion batteries, as well as preparing ultra-sensitive flexible pressure sensors. Finally, we assembled the pressure sensor zinc-ion battery integrated system. This flexible sensor offers ultra-high sensitivity (S = 6.751 kPa), fast response/recovery (76.0/88.0 ms), long-term cycle stability (10,000 cycles), and a wide pressure detection range (2.0 Pa–5∗ 10 5 Pa). In particular, the excellent charge and discharge performance of the system ensures the real-time transmission of data collected by the sensor unit with the ability to detect the vital signs of the human body. The overall design strategy provides a new solution and reference content for the future development of miniaturized wearable electronic sensing devices.
研究领域:
材料科学
·
能源技术
·
传感技术
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Public Health
·
2025
·
IF 3.4
Patricia Ferrero-Sereno,María Mendoza-Muñoz,Patricia Palomo-López,Jorge Carlos-Vivas,Patricia Luna-Castaño,Raquel Caballero-De la Calle,Miguel Ángel García-Garrido,Laura Muñoz-Bermejo
Background: Informal caregivers of people with dementia present high levels of burden, emotional distress and low social support. Technology-based home-based interventions are presented as an alternative to providing health education, emotional support and caregiver training.Objective: To evaluate the effectiveness of technological interventions on health-related quality of life (HRQoL) and the management of psychoemotional aspects in family caregivers of people with dementia.Methods: A systematic literature review (SLR) was conducted using the Web of Science, PubMed and Scopus electronic databases, including all studies up to 7 February 2025.Results: In the review, 7,230 studies were initially identified, but only 13 met the eligibility criteria. The interventions reviewed differed in methodology when examining their impact on target variables. However, on-demand, internet- or telephone-based interventions with training activities and contact with professionals seem to improve quality of life and psychoemotional variables such as anxiety, depression and overload.Conclusion: Technological interventions using the internet and mobile applications may be useful for informal caregivers of people with dementia as they can improve quality of life and psychoemotional aspects. The interventions reviewed differed in terms of instruments and protocols when examining their impact on caregiver well-being. Therefore, more research is needed to further investigate these methodologies in order to optimize their impact and adapt them to the diverse realities of caregivers of people with dementia.
研究领域:
老年医学
·
护理学
·
临床心理学
·
康复医学
·
数字健康
·
公共卫生
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）