SCIENCE OF THE TOTAL ENVIRONMENT
·
2020
·
IF 6.551
Wenting Lin,Zhishan Huang,Shiyu Gao,Zhifeng Luo,Wenxuan An,Ping Li,Senwen Ping,Yuan Ren
Wastewater-based epidemiology (WBE) is considered as an effective tool for monitoring drug consumption, which is often obtained by back-calculation using the influent concentration and other parameters of wastewater treatment plants . Lack of information on the transformation of drugs in municipal wastewater and sewers may lead to inaccurate consumption estimation. Fourteen prescription drugs in four major categories of diseases (cardiovascular, diabetes, depression, and asthma) were selected to study their adsorption and biodegradation in wastewater and biofilm sewers under different temperatures, pH and biofilms conditions. The result demonstrated that the decay percentage of drugs in wastewater is increased with temperature. Within 72 h, eleven of these 14 drugs, such as metformin, metoprolol, bezafibrate, etc., have decay percentages below 20% in wastewater, which are considered as stable drugs; and the decay percentages of the other three, monluster, paroxetine, and sertraline, are greater than 20%, which are the most unstable drugs. In lab-scale aerobic and anaerobic sewers, the decay percentages of metformin, glipizide, metoprolol, gemfibrozil, and atorvastatin are less than 20% within 24 h. The decay percentages of venlafaxine, citalopram, fluoxetine, salmeterol, and salbutamol within 24 h are 20%–60% and paroxetine and sertraline are close to or even exceed 80% within 6 h. Biodegradation of drugs in sewers with aerobic or anaerobic biofilms is higher than that in wastewater systems without biofilms. The results showed that when the per capita consumption of drugs is estimated by using the WBE method, the stability of drugs in wastewater and different types of sewers will significantly affect their residual concentrations.
研究领域:
环境科学
·
药理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2020
·
IF 6.551
Lijun Meng,Minjie Wu,Haisheng Chen,Yu Xi,Manhong Huang,Xubiao Luo
Wastewater containing heavy metal antimony (Sb) from textile and printing industry has high potential toxicity to environment and human health. In this study, forward osmosis (FO) technology was firstly used to remove Sb from both model Sb wastewater and real dyeing and printing wastewater. The evaluation of FO performance with different feed solution pH and NaCl concentration indicated that the water flux and reverse salt flux were proportional to both the feed solution pH and NaCl concentration. The rejection of Sb decreased with NaCl concentration while increased with feed solution pH. The addition of Cr (VI) as co-existing ions in the feed further increased Sb removal for a range of feed solution pH and NaCl concentration. FO process exhibited high removal efficiency for Sb (>99.7%) and other water quality parameters (TN, TP, NH 3 -N, SS, COD and TOC) when it was applied for the treatment of real dyeing and printing wastewater. The mass balance of Sb in FO process was also analyzed to investigate the membrane fouling and rejection mechanism.
研究领域:
环境科学
·
水处理工程
✓ 已验证
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2019
·
IF 5.589
Hongxuan Qiu,Run Zhang,Yichang Yu,Rong Shen,Hongwen Gao
The powder-based photocatalytic material is often difficult on wide application and then loaded on a matrix for separating conveniently from the liquid. Submerged photocatalysts may not take advantage of the light energy adequately. Thus, this boundedness may reduce their utilization and potentially cause the secondary pollution on the environment. In this paper, the micron-sized silica sphere is used as a floating substrate, and the visible-light-driven photocatalytic material iodine oxygen bismuth is prepared onto the hollow silica microspheres. The composite spheres as the visible-light-driven photocatalytic material have been characterized by XPS, XRD, SEM, EDX, PL , etc. It confirmed that BiOI combined on the SiO 2 microsphere (mSiO 2 ) by Bi-O-Si. The photogenerated electrons of the composite have a low probability of recombination and have a narrow band energy (1.82 eV). The composite was used to photodegrade diesel-containing wastewater and rhodamine B, and the superoxide group (·O 2 − ) was found to be the main degradation active factor. And by GC–MS test, it is known that the superoxide group (·O 2 − ) can degrade long-chain alkanes into short chains or form branches. Detailed studies on the acute exposure experiments of Vibrio qinghaiensis sp.-Q67 and zebrafish embryos showed that the composites can effectively reduce the toxicity of BiOI and mSiO 2 .
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Yong Bai,Peng Gao,Rong Fang,Jing Cai,Li-Dan Zhang,Qin-Yuan He,Zi-Hao Zhou,Shi-Peng Sun,Xue-Li Cao
To efficiently recycle metal ions from electroplating wastewater, a positively charged acid-resistant nanofiltration membrane was prepared by coupling interfacial polymerization and postgrafting modification with an ethanol grafting solution containing N-(3-aminopropyl)-imidazole (ANPI). Ethanol, as the grafting solvent, not only slightly swelled the original polyamide (PA) layer but also is mutually miscible with n-hexane, which prevented the formation of additional PA layers. ANPI, as the grafting monomer, was covalently bound to the -COCl groups of the PA layer to guarantee grafting stability. Due to the inhibited hydrolysis of the -COCl group by ethanol, more ANPI was grafted on the PA layer, which could be easily protonated under low pH. This resulted in a looser, thinner and positively charged selectivity layer. The membrane permeability was improved by 56.0 ± 0.55% with high interception performance (> 98% for Cu 2+ and Ni 2+ ions) in electroplating rinse wastewater. The formed positive protective layer prevented H + ions from attacking the –CO-NH- bonds, resulting in strong stability after immersion in 10 wt% H 2 SO 4 and H 3 PO 4 . Therefore, the obtained membrane shows promise for application in highly acidic wastewater.
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
ACS Nano
·
2024
·
IF 15.8
Kun Zhang,Xin Li,Chenyang Yan,Rongxiang Shi,Zhiqiang Fang,Songlin Zhou,Rong Cao,Junfei Tian
Water-induced electricity harvesting has gained much significance for energy sustainability. Bio-based hydrovoltaic materials increase the attractiveness of this strategy. Although promising, it faces a challenge due to its reliance on fresh water and its inherently low power output. Herein, the energy from alkalinity-gradient power generation demonstrated the feasibility of reuse of alkaline wastewater to develop an all-wood-based water-induced electric generator (WEG) based on ion concentration gradients. The intermittent water droplets bring about uneven distribution of electrolyte and endow delignified wood with the difference of ion concentration along aligned cellulose nanochannels, thus supplying electrical power. The practice of using alkali reservoirs, including industrial wastewater, further contributes to electricity generation. The cubic WEG with a side length of 2 cm can produce an ultrahigh open-circuit voltage of about 1.1 V and a short-circuit current of up to 320 μA. A power output of 6.75 μW cm–2 is correspondingly realized. Series-connected WEGs can be used as an energy source for commercial electronics and self-powered systems. Our design provides a double value proposition, allowing for sustainable energy generation and wastewater reuse.
研究领域:
材料科学
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环境科学
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Meijie Ren,Ping Ning,Jie Xu,Guangfei Qu,Ruosong Xie
Ceric ammonium nitrate manufacture generated a large number of acidic wastewater, which contained a certain amount of ceric. To treatment this wastewater and recovery the ceric resource and waste acid, an electrodialysis-vacuum membrane distillation (ED-VMD) hybrid system was introduced. To establish a stable and efficient system, a series of membrane materials, performance parameters and solution properties were investigated. It was found that NO 3 − could be separated from Ce 4+ and recovered efficiently in ED system. pH value of Cerium wastewater decreased in the ED process which ensured a stable and reliable operation of the following concentration technology. The high resistance of Ce 4+ and high NO 3 − recovery efficiency in ED anode compartment supplied an opportunity for industry waste acid recycling as well. The VMD process provided more than 99.9% rejection of Ce 4+ and concentrated it maximally. Furthermore, membrane cleaning procedures were discussed in order to keep the high efficiency of VMD system. The results implied that vapor condensation inside the pores was the main reason caused membrane fouling and flux decreasing. And the drying procedure was the most efficient cleaning method. This work provided a potential treatment process for rare earth metals wastewater treatment, which decreased the wastewater discharge and recycled the resource in some field.
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
SCIENCE OF THE TOTAL ENVIRONMENT
·
2021
·
IF 7.963
Hangbiao Jin,Dan Yang,Yunbin Hao,Jinyang Zhang,Pengfei Wu,Weiping Liu,Meirong Zhao
The abuse of psychoactive substances has been increasing dramatically over the last few years, which is becoming a concern for human health and social stability. How to accurately estimate psychoactive substances' total consumption in certain areas is the key to manage such substances. In order to control psychoactive substances, 8 psychoactive substances' consumption within 12 wastewater treatment plants (WWTPs) service areas in a certain city of Guangxi, China was investigated in 2019. Firstly, a solid-phase extraction-liquid chromatography-tandem mass spectrometry method was used to determine the influent concentrations. Morphine (MOR), 3, 4-methylenedioxymethamphetamine (MDMA), methamphetamine (METH), ketamine (KET), and norketamine (NK) were detected, with the concentrations ranging from less than method detection limit (NK, MDMA) to 170.91 (METH) ng/L. Then, the back-estimation of consumption was conducted according to the objective and near real-time wastewater-based epidemiology (WBE). The results demonstrate that KET, MOR, and METH are the most abused psychoactive substances, with the mean consumption of 682.42, 167.81, and 44.56 mg/day/1000 inh, respectively. The psychoactive substance residues of WWTPs influent were analyzed to estimate such substances' consumption in specific areas, so as to provide support for risk prevention and control.
研究领域:
环境科学
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公共卫生
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毒理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2021
·
IF 9.381
Jianting Liu,Yicong Chen,Shuyu Jiang,Jianhui Huang,Yuancai Lv,Yifan Liu,Minghua Liu
A cellulose-g-poly-(acrylamide-co-sulfonic acid) polymeric bio-adsorbent (CASA) was prepared by grafting copolymerization, and used to adsorb Cr(III) from leather wastewater. The SEM, XRD, FTIR , and XPS results showed that CASA contains many spherical particles and functional groups such as NH 2 , C O, and HSO 3 . The adsorption experiments revealed that CASA presented excellent adsorption performance for Cr(III) (274.69 mg/g of max adsorption capacity) from high-salinity wastewater, which was much better than other reported adsorbents with different structures. Meanwhile, adsorption equilibrium could be reached within 10 min due to the introduction of abundant sulfonic acid groups on its surface. In addition, the adsorption process followed the Langmuir adsorption isotherm , and the experimental data conformed to the pseudo-second-order kinetics model . Moreover, the main adsorption mechanisms include chelation, electrostatic interactions , and cation exchange , which provide an important theoretical basis for the removal of toxic inorganic pollutants from leather wastewater.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2022
·Vol. 331
·期 11
·4489-4502
·
IF 1.754
Wu Xuanchun,Zhang Yujing,Nie Xiaoqin,Ma Chunyan,Pan Ning,Dong Faqin,Li Xiaoan
A kind of amino-modified polyvinyl alcohol fibers were prepared to extract uranium from actual uranium-containing laundry wastewater. The Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy confirmed that amino groups were successfully attached to polyvinyl alcohol fibers' surface. The maximum adsorption capacity of uranium is 337.84 mg g −1 (pH 6.0). In the actual uranium-containing laundry wastewater system the modified fibers exhibited a high distribution coefficient for uranium (1.55 × 10 5 mL g −1 ). Given the aforesaid findings, It is an outstanding adsorbent for uranium elimination from actual uranium-containing laundry wastewater. Graphical abstract
研究领域:
环境科学
·
材料科学
·
核化学工程
✓ 已验证
产品关联
DOI
高影响因子
WATER RESEARCH
·
2023
·
IF 12.8
Wenhui An,Xufang Li,Jieting Ma,Luming Ma
An Fe-based catalyst was prepared by oxidising waste Fe shavings directly in a solution. In engineering applications, Fe shavings were compressed and modified to form Fe-based monolithic catalyst packing. Both of which exhibited excellent catalytic activity in catalytic ozonation industrial wastewater after biochemical treatment. Fe-based monolithic catalyst packing has irregular channels, large porosity, small pore diameter, and the effective specific surface area (SSA) up to 3500 m 2 /m 3 , these characteristics are conducive to mass transfer, and promote the effective utilisation of •OH in the catalyst “action zone”. A tower reactor (<3000 m 3 /d) and reinforced concrete construction reactor (>5000 m 3 /d) were designed according to the wastewater flow. Regression analysis showed that hydraulic residence time (HRT) and O 3 /COD in are important parameters in engineering design and operation. In addition, strategies for the application of Fe-based monolithic catalyst packing to wastewater with high salinity and high inorganic carbon concentration have been proposed. Fe-based monolithic catalyst packing catalytic ozonation is a relatively cost-effective and eco-friendly process with extremely broad application prospects in the advanced treatment of industrial wastewater.
研究领域:
环境工程
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2019
·Vol. 30
·期 16
·15754-15765
·
IF 2.195
Sun Jialin,Huang Dejia,Liu Rui,Dai Jingtao,Chen Jian
To improve the visible-light photocatalytic performance of TiO 2 for practical application, Ag/AgBr modified TiO 2 was fabricated in ionic liquid–water medium via a facile hydrothermal-reduction method. The visible-light catalytic activity of as-prepared Ag/AgBr/TiO 2 was measured using tetracycline (TC) as the target pollutant. Characterizations by various techniques (SEM–EDS, XRD, XPS and DRS) and the quenching experiments with scavengers for possible active species (h + , • O 2 − and ·OH) were executed to probe the mechanism underlying the photocatalytic performance. Critical impacts from the catalyst and solution chemistry were evaluated in the mediums of TC solution, simulated wastewater and real wastewater sample. The results suggested that: (1) benefitting from the visible-light sensitive Ag/AgBr and high specific surface area TiO 2 , Ag/AgBr/TiO 2 exhibits fair stability and remarkable visible-light photocatalytic activity; (2) under optimized conditions, Ag/AgBr/TiO 2 provides higher visible-light catalytic activity than Ag/AgBr and TiO 2 ; (3) the coexisting inorganic ions with high concentration in the simulated wastewater sample depress TC photo-degradation, and the impacts varies with the species of inorganic ions; (4) COD removal rate about 65.5% in real wastewater sample proves that Ag/AgBr/TiO 2 can mineralize TC promptly and almost completely.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2022
·
IF 11.072
Jing Liu,Airong Liu,Ji Li,Shiting Liu,Wei-xian Zhang
Rapid and efficient decolorization is great challenging for wastewater treatment , and nanoscale zero-valent iron (nZVI) was recognized as an environmental-friendly and economical-cost agent for effective decolorization of textile wastewater . Herein, the performance and mechanisms of Congo Red (CR) wastewater treatment with nZVI were probed in a continuous flow nano-iron reactor (NIR), which included the “reaction, separation and reuse” process. CR wastewater (initial concentration up to 500 mg·L −1 ) was successfully decolorized by nZVI in the NIR during the 125 d continuous running period. The color removal efficiency achieved 98.59%, accompanied with a large removal capacity of 6.64 mg-CR/g-nZVI at an average low nZVI dose (0.075 g-nZVI/L-CR). The decolorization mechanism of CR wastewater was ascribed to the chromophore groups (–N=N–) breaking, the final productive products were 4-Amino-1-naphthalene sulfonic acid and 4,4′-diaminodiphenyl, which were proved by liquid chromatography coupled to mass spectrometry, X-ray photoelectron spectroscopy, UV–Vis spectrophotometer, infrared spectroscopy . Decolorization efficiencies were up to 77.82% and 87.95% on average for two actual textile wastewater in the NIR, during the 83.5 h and 445 h continuous running period. This work provides proof that the nZVI technology can offer tremendous potential for the decolorization of recalcitrant organic dye wastewater.
研究领域:
环境科学
·
废水处理技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）