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1. A novel strategy to purify conductive polymer particles

Author:
Spence, Daron; Polizos, Georgios; Joshi, Pooran; Sharma, Jaswinder
Source:
RSC advances 2019 v.9 no.9 pp. 4857-4861
ISSN:
2046-2069
Subject:
washing,   etc   ; particle size; polymers; surfactants;     Show all 4 Subjects
Abstract:
... The purification of conductive polymer (e.g., polyaniline) particles is a challenging task, especially when the particle size is small. Herein, we demonstrate a unique strategy (electrode-based) to purify polyaniline particles by exploiting the difference in surface charge between particles and surfactants, and compare the results with a commonly used purification strategy (washing). ...
DOI:
10.1039/c8ra08372j

2. Analysis of mechanical and dimensional properties of the denim fabrics produced with double-core and core-spun weft yarns with different weft densities

Author:
Bedez Ute, Tuba
Source:
The journal of the Textile Institute 2019 v.110 no.2 pp. 179-185
ISSN:
1754-2340
Subject:
washing,   etc   ; cotton; denim; mechanical properties; weaving; yarns;     Show all 6 Subjects
Abstract:
... Elastic structures are preferred for improving the elasticity and recovery properties of denim fabrics. With the intention of improving comfort during body movements in denim jeans, 10–35% elasticity is required. In this study, the effect of the composition of double-core (dual-core) and core-spun weft yarns and weft density on the mechanical properties of denim fabrics was investigated. For this ...
DOI:
10.1080/00405000.2018.1470451

3. Tannic acid for remediation of historically arsenic-contaminated soils

Author:
Gusiatin, Zygmunt Mariusz; Klik, Barbara; Kulikowska, Dorota
Source:
Environmental technology 2019 v.40 no.8 pp. 1050-1061
ISSN:
1479-487X
Subject:
soil washing; washing,   etc   ; arsenic; oxides; pH; polluted soils; remediation; soil pollution; sorption; tannins; toxic substances;     Show all 11 Subjects
Abstract:
... Soil washing effectively and permanently decreases soil pollution. Thus, it can be considered for the removal of the most toxic elements, for example arsenic (As). In this study, historically As-contaminated soils (2041–4294 mg/kg) were remediated with tannic acid (TA) as the washing agent. The scope of this study included optimization of the operational conditions of As removal, determination of ...
DOI:
10.1080/09593330.2017.1417490

4. Controlled degradation of polyisoprene and polybutadiene: A comparative study of two methods

Author:
Berto, Pierre; Grelier, Stéphane; Peruch, Frédéric
Source:
Polymer degradation and stability 2018
ISSN:
0141-3910
Subject:
washing,   etc   ; aldehydes; molecular weight;     Show all 3 Subjects
Abstract:
... Low molar mass carbonyl telechelic cis,1–4 polyisoprene (CTPI) and aldehyde telechelic cis, 1–4 polybutadiene (ATPB) were easily prepared by the controlled degradation of high molar mass 1,4-cis polyisoprene (PI) and 1,4-cis polybutadiene (PB) in a molar mass range of 5000–80 000 g mol⁻¹. Two methods are compared: the direct one using only the periodic acid (H5IO6) to randomly cleave the chain and ...
DOI:
10.1016/j.polymdegradstab.2018.06.019

5. Rapid visual detection of nitroaromatic explosives using a luminescent europium-organic framework material

Author:
He, Ning; Gao, Mingliang; Shen, Dunpu; Li, Hongda; Han, Zhengbo; Zhao, Pengcheng
Source:
Forensic science international 2019 v.297 pp. 1-7
ISSN:
0379-0738
Subject:
washing,   etc   ; ethanol; explosives; fluorescence; forensic sciences; screening; trinitrotoluene;     Show all 7 Subjects
Abstract:
... Rapid field screening is enormously important in forensic analysis of explosives. In this article, we used a methodology based on a strong red-fluorescent europium-organic framework (Eu-MOF) material for sensitive and selective detection of picric acid, TNT, and tetryl using the fluorescence quenching effect. Results indicate that Eu-MOF can be used for the visual detection of these three explosiv ...
DOI:
10.1016/j.forsciint.2019.01.004

6. Assessing arsenic redox state evolution in solution and solid phase during As(III) sorption onto chemically-treated sewage sludge digestate biochars

Author:
Wongrod, Suchanya; Simon, Stéphane; van Hullebusch, Eric D.; Lens, Piet N.L.; Guibaud, Gilles
Source:
Bioresource technology 2019 v.275 pp. 232-238
ISSN:
0960-8524
Subject:
washing,   etc   ; acids; arsenic; biochar; chemical treatment; oxidation; sewage sludge; sorption;     Show all 8 Subjects
Abstract:
... This work aimed to determine the arsenic redox state distribution during As(III) sorption onto chemically-modified biochars. A solid–liquid extraction protocol using phosphoric (0.3 M) and ascorbic (0.5 M) acids at 80 °C for 20 min was established to ensure a quantitative recovery and stability of As(III) during the extraction. During sorption experiments, the redox conversions of As occurred and ...
DOI:
10.1016/j.biortech.2018.12.056

7. A microfluidic platform with pneumatically switchable single-cell traps for selective intracellular signals probing

Author:
Wang, Yao; Zhu, Jinchi; Chen, Peng; Hu, Liang; Feng, Xiaojun; Du, Wei; Liu, Bi-Feng
Source:
Talanta 2019 v.192 pp. 431-438
ISSN:
0039-9140
Subject:
washing,   etc   ; adenosine triphosphate; biosensors; calcium; calcium signaling; drugs; hydrodynamics; screening;     Show all 8 Subjects
Abstract:
... To investigate rapid suspension cell signaling, a microfluidic platform was urgently needed for flexibly manipulation of single cells and simultaneous generation of controllable chemical signals to stimulate single cells. In this paper, a microfluidic biosensor was developed to monitor intracellular calcium signal, integrated with single-cell trapping, chemical stimulation and releasing. Selective ...
DOI:
10.1016/j.talanta.2018.09.085

8. Enhanced soil washing with copper recovery using chemical precipitation

Author:
Fedje, Karin Karlfeldt; Strömvall, Ann-Margret
Source:
Journal of environmental management 2019 v.236 pp. 68-74
ISSN:
0301-4797
Subject:
soil washing; washing,   etc   ; bark; chemical precipitation; circular economy; copper; hazardous waste; industry; leaching; liquids; pH; remediation; soil;     Show all 13 Subjects
Abstract:
... Worldwide, the number of contaminated sites is large, and remediation methods including recovery of metals have potential to be key aspects of a sustainable and circular economy. Soil washing, followed by chemical precipitation is a possible method for recovery of metals. The purpose of this study is to propose a complete recovery method, where Cu is efficiently leached from samples with contamina ...
DOI:
10.1016/j.jenvman.2019.01.098

9. Anodic oxidation for the remediation of soils polluted with perchloroethylene

Author:
Muñoz‐Morales, Martin; Sáez, Cristina; Cañizares, Pablo; Rodrigo, Manuel Andrés
Source:
Journal of chemical technology and biotechnology 2019 v.94 no.1 pp. 288-294
ISSN:
0268-2575
Subject:
soil washing; washing,   etc   ; electrodes; electrolysis; interphase; liquids; oils; oxidation; pollutants; polluted soils; protective effect; remediation; sodium dodecyl sulfate; surfactants; tetrachloroethylene;     Show all 15 Subjects
Abstract:
... BACKGROUND: This work focuses on the removal of perchloroethylene (PCE) from soils spiked with this hazardous chlorinated hydrocarbon and oil by a combination of two technologies: soil washing and anodic oxidation with diamond electrodes. The first attains the transfer of the pollutant from the soil to a soil washing fluid (SWF), from which the organics are then efficiently removed. RESULTS: Resul ...
DOI:
10.1002/jctb.5774

10. Waste-Minimized Protocol for the Synthesis of Sulfonylated N-Heteroaromatics in Water

Author:
Xie, Long-Yong; Peng, Sha; Tan, Jia-Xi; Sun, Rong-Xia; Yu, Xianyong; Dai, Ning-Ning; Tang, Zi-Long; Xu, Xinhua; He, Wei-Min
Source:
ACS sustainable chemistry & engineering 2018 v.6 no.12 pp. 16976-16981
ISSN:
2168-0485
Subject:
washing,   etc   ; chemoselectivity; crystallization; filtration; regioselectivity;     Show all 5 Subjects
Abstract:
... An ecofriendly and practical method for the efficient synthesis of various sulfonylated N-heteroaromatics in water under metal-free, organic-solvent-free, neutral, and mild reaction conditions was developed. The employment of readily available reagents, wide substrate scope, high chemoselectivity, and regioselectivity make this protocol very practical. Importantly, the pure products can be easily ...
DOI:
10.1021/acssuschemeng.8b04339

11. Remediation of Cd- and Pb- contaminated clay soils through combined freeze-thaw and soil washing

Author:
Rui, Dahu; Wu, Zhipeng; Ji, Mingchng; Liu, Jianfei; Wang, Shuren; Ito, Yuzuru
Source:
Journal of hazardous materials 2019 v.369 pp. 87-95
ISSN:
0304-3894
Subject:
soil washing; washing,   etc   ; EDTA (chelating agent); cadmium; clay; clay soils; engineering; freeze-thaw cycles; lead; liquids; pollutants; polluted soils; pollution; remediation;     Show all 14 Subjects
Abstract:
... To improve the washing efficiency for low-permeability clay, the method of freeze-thaw synergistic chemical washing was put forward to study the cadmium (Cd)-and lead (Pb)- real-site contaminated soils as the research object and ethylene diaminete traacetic acid (EDTA) was selected as the eluent to conduct a soil column washing test of heavy metal-contaminated clay soil. Results show that repeated ...
DOI:
10.1016/j.jhazmat.2019.02.038

12. Dechelation of Cd-EDTA complex and recovery of EDTA from simulated soil-washing solution with sodium sulfide

Author:
Wang, Qingwei; Chen, Jiajun; Zheng, Aihua; Shi, Lanxiang
Source:
Chemosphere 2019 v.220 pp. 1200-1207
ISSN:
0045-6535
Subject:
soil washing; washing,   etc   ; EDTA (chelating agent); Fourier transform infrared spectroscopy; acidification; cadmium; heavy metals; ion exchange chromatography; pH; polluted soils; sodium; sodium sulfide; temperature; wastewater;     Show all 14 Subjects
Abstract:
... Washing water containing poorly degradable heavy metal-EDTA complexes is produced by ethylenediaminetetraacetic acid (EDTA) washing of heavy metal-contaminated soil. A series of batch experiments were performed to explore the dechelation of heavy metal-EDTA complexes and the recovery of EDTA from simulated soil-washing solution using sulfide precipitation with Na2S. The results showed that the eff ...
DOI:
10.1016/j.chemosphere.2018.12.212

13. Investigating the use of synthetic humic-like acid as a soil washing treatment for metal contaminated soil

Author:
Yang, Ting; Hodson, Mark E.
Source:
The Science of the total environment 2019 v.647 pp. 290-300
ISSN:
0048-9697
Subject:
soil washing; washing,   etc   ; agricultural soils; arsenic; bioavailability; citric acid; copper; humic acids; lead; liquids; nickel; organic carbon; pH; polluted soils; risk; tartaric acid; zinc;     Show all 17 Subjects
Abstract:
... Humic acid can effectively bind several metals and is regarded as a promising soil washing agent. Previous studies indicate that carboxylic groups dominate metal binding to humic acid. In this study, a synthetic humic-like acid (SHLA) with high COOH content (5.03 mmol/g) was used as a washing agent to remove metals (Cu, Zn, Ni, Pb, As) from two contaminated agricultural soils (Soil 1 (pH: 6.17 ± 0 ...
DOI:
10.1016/j.scitotenv.2018.07.457

14. The use of zero-valent Fe for curbing toxic emissions after EDTA-based washing of Pb, Zn and Cd contaminated calcareous and acidic soil

Author:
Gluhar, Simon; Jez, Erika; Lestan, Domen
Source:
Chemosphere 2019 v.215 pp. 482-489
ISSN:
0045-6535
Subject:
soil washing; washing,   etc   ; EDTA (chelating agent); acid soils; adsorption; cadmium; emissions; environmental fate; iron; leaching; lead; pH; pollution; remediation; slurries; toxicity; zinc;     Show all 17 Subjects
Abstract:
... The use of EDTA-based soil washing is prevented by chelant environmental persistence and the hazard of toxic post-remedial emissions. Calcareous and acidic soils with 828 and 673 mg Pb kg−1, respectively, and co-contaminated with Zn and Cd, were washed with 90 and 60 mM EDTA, respectively, to remove 67 and 80% of Pb. Washed soils were rinsed until 6.5 and 5.1 mM EDTA, respectively, was measured in ...
DOI:
10.1016/j.chemosphere.2018.10.074

15. Changes in physicochemical properties of corn starch upon modifications by atmospheric pressure plasma jet

Author:
Wu, Tsung-Yen; Chang, Chih-Ren; Chang, Tsai-Ju; Chang, Yu-Ju; Liew, Ying; Chau, Chi-Fai
Source:
Food chemistry 2019 v.283 pp. 46-51
ISSN:
0308-8146
Subject:
washing,   etc   ; atmospheric pressure; corn starch; ingredients; pasting properties; solubility; starch granules; viscosity;     Show all 8 Subjects
Abstract:
... The influences of atmospheric pressure plasma jet on different physicochemical properties of corn starch were evaluated after treated with the plasma jet (30 min) at different strengths (400 W–800 W). Our results demonstrated that residual aging effects of plasma on starch could be eliminated by washing the treated samples with distilled water at a ratio of 1:30, w/v. After plasma and washing trea ...
DOI:
10.1016/j.foodchem.2019.01.043

16. The reduction of toxic metals of various rice types by different preparation and cooking processes – Human health risk assessment in Tehran households, Iran

Author:
Sharafi, Kiomars; Yunesian, Masoud; Nodehi, Ramin Nabizadeh; Hossein Mahvi, Amir; Pirsaheb, Meghdad; Nazmara, Shahrokh
Source:
Food chemistry 2019 v.280 pp. 294-302
ISSN:
0308-8146
Subject:
washing,   etc   ; arsenic; boiling; cadmium; cooking; health effects assessments; households; human health; lead; rice; soaking; toxicity; Iran;     Show all 13 Subjects
Abstract:
... In this study, the effect of washing, soaking (1, 5 and 12 h), and cooking rice methods including Rinsed (boiling in excess water) and Kateh (conventional) cooking on the reduction of the arsenic (As), lead (Pb), and cadmium (Cd) were evaluated. The results showed that the rinsed cooking has higher efficiency for removal of toxic metals (As = 42.3%, Pb = 42.9% and = 27.6%) than Kateh method (As =  ...
DOI:
10.1016/j.foodchem.2018.12.060

17. Dual ionic liquid-immobilized silicas for multi-phase extraction of aristolochic acid from plants and herbal medicines

Author:
Fang, Luwei; Tian, Minglei; Yan, Xuemin; Xiao, Wei; Row, Kyung Ho
Source:
Journal of chromatography 2019 v.1592 pp. 31-37
ISSN:
0021-9673
Subject:
washing,   etc   ; adsorption; aristolochic acids; chromatography; herbal medicines; methanol; silica; sorbents; standard deviation;     Show all 9 Subjects
Abstract:
... A convenient, and efficient multi-phase extraction method was used to isolate aristolochic acid from real samples. To increase the efficiency, a new dual ionic liquid-immobilized silica was used as a sorbent and the effects of the adsorption conditions were investigated. IM-BIM@Sil in a methanol/water (60:40, v/v) solution at 60 °C extracted the highest amount of aristolochic acid (16.69 mg/g) com ...
DOI:
10.1016/j.chroma.2019.01.008

18. Membrane layers intensifying quorum quenching alginate cores and its potential for membrane biofouling control

Author:
Huang, Jinhui; Yang, Ying; Zeng, Guangming; Gu, Yanling; Shi, Yahui; Yi, Kaixin; Ouyang, Yichen; Hu, Jianglin; Shi, Lixiu
Source:
Bioresource technology 2019 v.279 pp. 195-201
ISSN:
0960-8524
Subject:
washing,   etc   ; alginates; bacteria; biofouling; chitosan; confocal laser scanning microscopy; membrane bioreactors; polyacrylonitrile; strength (mechanics);     Show all 9 Subjects
Abstract:
... Quorum quenching (QQ) has been proved to be an efficient method to mitigate biofouling in membrane bioreactors (MBRs). In this paper, in order to enhance practicability of QQ microcapsules, we prepared three types microcapsules with same alginate cores (SAs). The microcapsules with polyacrylonitrile (PAN) layer showed excellent performance in preventing cell leakage from the microcapsules, increas ...
DOI:
10.1016/j.biortech.2019.01.134

19. Understanding lifetimes and failure modes of defective washing machines and dishwashers

Author:
Tecchio, Paolo; Ardente, Fulvio; Mathieux, Fabrice
Source:
Journal of cleaner production 2019 v.215 pp. 1112-1122
ISSN:
0959-6526
Subject:
washing,   etc   ; carbon; data collection; databases; dishwashers; electronics; exercise; household equipment; interviews; pumps; surveys; Europe;     Show all 12 Subjects
Abstract:
... The available literature on average lifetimes and failure modes of household appliances is mainly based on results of surveys conducted among end-users, but very little precise information can be found on specific failure modes and repair rates.The main objective of this study is to provide quantitative data about frequent failures and average service lifetimes of two household appliances, through ...
DOI:
10.1016/j.jclepro.2019.01.044

20. Hybrid dilute sulfuric acid and aqueous ammonia pretreatment for improving butanol production from corn stover with reduced wastewater generation

Author:
Xiao, Min; Wang, Lan; Wu, Youduo; Cheng, Chi; Chen, Lijie; Chen, Hongzhang; Xue, Chuang
Source:
Bioresource technology 2019 v.278 pp. 460-463
ISSN:
0960-8524
Subject:
washing,   etc   ; ammonia; butanol; corn stover; feedstocks; hemicellulose; lignin; lignocellulose; pretreatment; sugars; sulfuric acid; temperature; wastewater;     Show all 13 Subjects
Abstract:
... An efficient hybrid pretreatment method was developed for butanol production from corn stover using dilute sulfuric acid (DA) and aqueous ammonia (AA). With the optimized AA concentration, treatment temperature and time of 10% AA, 80 °C and 24 h, the hybrid pretreatment could effectively dissolve hemicellulose and lignin with solid recovery rate of 37.45% and lignin reduction rate of 86.77% compar ...
DOI:
10.1016/j.biortech.2019.01.079