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1. Ionic Liquids as Green Solvents for Reactive Separation of Glutaric Acid from Water

Author:
Baylan, Nilay
Source:
Water, air, and soil pollution 2020 v.231 no.4 pp. 162
ISSN:
0049-6979
Subject:
phosphates,   etc   ; glutaric acid; ionic liquids;     Show all 3 Subjects
Abstract:
... In recent years, ionic liquids as green solvents have been received great attention owing to their remarkable properties. In this context, in the present study, the separation of glutaric acid from water was examined using green solvents instead of conventional organic solvents. As green solvents, four different types of imidazolium-based ionic liquids were utilized. Tributyl phosphate (TBP) was u ...
DOI:
10.1007/s11270-020-04549-3

2. Developing the new kinetics model based on the adsorption process: From fitting to comparison and prediction

Author:
Fang, Dexin; Zhuang, Xianquan; Huang, Liping; Zhang, Qian; Shen, Qiushi; Jiang, Lei; Xu, Xiaoyi; Ji, Fangying
Source:
The Science of the total environment 2020 v.725 pp. 138490
ISSN:
0048-9697
Subject:
phosphates,   etc   ; adsorbents; adsorption; hydroxides; models; prediction;     Show all 6 Subjects
Abstract:
... In this study, an intrinsic kinetics model was proposed to simulate the adsorption process. The kinetics model was established based on the collision theory, where the available adsorption site and residual adsorbate concentration were considered. The model specifically highlights the significance of initial conditions in its equation. The initial reaction condition is expressed by the model param ...
DOI:
10.1016/j.scitotenv.2020.138490

3. Ca₂B₅O₉Cl and Sr₂B₅O₉Cl: Nonlinear Optical Crystals with Deep-Ultraviolet Transparency Windows

Author:
Wang, Zujian; He, Jiangang; Hu, Bing; Shan, Pai; Xiong, Zheyao; Su, Rongbing; He, Chao; Yang, Xiaoming; Long, Xifa
Source:
ACS applied materials & interfaces 2020 v.12 no.4 pp. 4632-4637
ISSN:
1944-8252
Subject:
potassium dihydrogen phosphate,   etc   ; absorption; crystals; wavelengths;     Show all 4 Subjects
Abstract:
... M₂B₅O₉X is a prominent family with excellent nonlinear optical (NLO) responses, just as the Pb₂B₅O₉I crystal with a large second harmonic generation (SHG) of 13.5 times that of KH₂PO₄. However, most of these compounds are limited to ultraviolet and visible regions because of their long absorption edge (small band gap). Here, we report two members of this family, which change the situation. Using a ...
DOI:
10.1021/acsami.9b21072

4. Co-application of energy uncoupling and ultrafiltration in sludge treatment: Evaluations of sludge reduction, supernatant recovery and membrane fouling control

Author:
Ding, An; Zhao, Yingxue; Yan, Zhongsen; Bai, Langming; Yang, Haiyang; Liang, Heng; Li, Guibai; Ren, Nanqi
Source:
Frontiers of environmental science & engineering 2020 v.14 no.4 pp. 59
ISSN:
2095-2201
Subject:
phosphates,   etc   ; adenosine triphosphate; ammonia; energy; fouling; microfiltration; polymers; sludge; ultrafiltration;     Show all 9 Subjects
Abstract:
... Energy uncoupling is often used for sludge reduction because it is easy to operate and does not require a significant amount of extra equipments (i.e. no additional tank required). However, over time the supernatant extracted using this method can deteriorate, ultimately requiring further treatment. The purpose of this study was to determine the effect of using a low-pressure ultrafiltration membr ...
DOI:
10.1007/s11783-020-1238-9

5. The Moroccan High Atlas phosphate-rich sediments: Unraveling the accumulation and differentiation processes

Author:
El Bamiki, Radouan; Séranne, Michel; Chellaï, El Hassane; Merzeraud, Gilles; Marzoqi, Mohamed; Melinte-Dobrinescu, Mihaela Carmen
Source:
Sedimentary geology 2020 v.403 pp. 105655
ISSN:
0037-0738
Subject:
phosphates,   etc   ; aquifers; gravity; hydrodynamics; phosphorus pentoxide; sea level; sediments; storms;     Show all 8 Subjects
Abstract:
... The phosphate series of the Moroccan High Atlas accumulated during the Upper Cretaceous-Paleogene phosphogenic period, on a biologically-productive shallow-water platform. These phosphate-rich sediments were deposited during a relative sea-level cycle generating major stratigraphic surfaces. Five different types of phosphatic lithofacies are recognized based on their petrographic and sedimentologi ...
DOI:
10.1016/j.sedgeo.2020.105655

6. Practical synthesis of phosphonium salts with orthoformates and their application as flame retardants in polycarbonate

Author:
Xu, Chencong; Li, Tao; Jiang, Pingkai; Zhang, Yong Jian
Source:
Tetrahedron 2020 v.76 no.16 pp. 131107
ISSN:
0040-4020
Subject:
phosphates,   etc   ; chemical reactions; chemical structure; crystallization; flame retardants; organic compounds;     Show all 6 Subjects
Abstract:
... An efficient and practical approach to phosphonium salts has been developed. By the reaction of phosphines and different acid sources with orthoformates in one-step operation, the process allowed rapid access to phosphonium salts with diverse counterions in high yield after the purification by recrystallization. The flame retardant performance in PC has also been examined by blending several phosp ...
DOI:
10.1016/j.tet.2020.131107

7. Fines isolated from waste concrete as a new material for the treatment of phosphorus wastewater

Author:
Liu, Dongsheng; Zhu, Hanzhen; Wu, Kangming; Zhao, Xiaohui; Wang, Fu; Liao, Qilong
Source:
Environmental science and pollution research international 2020 v.27 no.11 pp. 12539-12549
ISSN:
0944-1344
Subject:
phosphates,   etc   ; calcium; cement; concrete; hydrolysis; minerals; phosphorus; recycling; wastewater;     Show all 9 Subjects
Abstract:
... Waste concrete is a key component of construction and demolition (C&D) waste produced in billions of tons. Exploring new technology for recycling waste concrete has become a global concern. Meanwhile, phosphorus (P) removal from wastewater consumes lots of natural minerals, leading to a heavy burden on the environment. In this study, the cement paste powder (HCPP) was used to remove phosphorus fro ...
DOI:
10.1007/s11356-020-07850-0

8. Unprecedented activity and stability on zirconium phosphates grafted mesoporous silicas for renewable aromatics production from furans

Author:
Kasipandi, Saravanan; Min Cho, Jae; Soo Park, Kyung; Shin, Chae-Ho; Wook Bae, Jong
Source:
Journal of catalysis 2020
ISSN:
0021-9517
Subject:
phosphates,   etc   ; aromatic compounds; furans; porous media; silica; zirconium;     Show all 6 Subjects
Abstract:
... The selective production of aromatic chemicals such as benzene, toluene and xylenes from biomass-derived furans are quite challenging since zeolites and other supported heterogeneous catalysts are easily deactivated by trapping oligomeric species over their pores. Herein, a series of zirconium phosphates (ZrP) grafted on ordered mesoporous architectures of silicas was prepared by nonhydrolytic sol ...
DOI:
10.1016/j.jcat.2020.02.026

9. Modulation of Interfacial Hydration by Carbonyl Groups in Lipid Membranes

Author:
Pérez, H. A.; Cejas, J. P.; Rosa, A. S.; Giménez, R. E.; Disalvo, E. A.; Frías, M. A.
Source:
Langmuir 2020 v.36 no.10 pp. 2644-2653
ISSN:
1520-5827
Subject:
phosphates,   etc   ; Fourier transform infrared spectroscopy; compressibility; electrical properties; lipids;     Show all 5 Subjects
Abstract:
... The lack of carbonyl groups and the presence of ether bonds give the lipid interphase a different water organization around the phosphate groups that affects the compressibility and electrical properties of lipid membranes. Generalized polarization of 1,2-di-O-tetradecyl-sn-glycero-3-phosphocholine (14:0 diether PC) in correlation with Fourier transform infrared (FTIR) analysis indicates a higher ...
DOI:
10.1021/acs.langmuir.9b03551

10. Tuning the morphology and adsorption capacity of Al-MIL-101 analogues with Fe3+ for phosphorus removal from water

Author:
Li, Shengjian; Lei, Ting; Jiang, Fang; Liu, Meng; Wang, Yating; Wang, Shixiong; Yang, Xiangjun
Source:
Journal of colloid and interface science 2020 v.560 pp. 321-329
ISSN:
0021-9797
Subject:
phosphates,   etc   ; absorption; adsorption; aluminum; coordination compounds; desorption; iron; phosphorus;     Show all 8 Subjects
Abstract:
... In this work, water-stable Al-MIL-101 analogues were successfully synthesized by adjusting the Fe/Al ratio to obtain excellent phosphorus removal efficiencies. The introduction of Fe³⁺ into the precursor solution allowed the final structure of aluminum metal-organic frameworks (Al-MOFs) to be tuned without introducing Fe into the final structure. The formation of Al-MIL-101 analogues with differen ...
DOI:
10.1016/j.jcis.2019.10.077

11. Identification and Determination of the Molecular Structure of Phosphate Esters by the Joint Application of Positive Ion and Negative Ion Electron Ionization Mass Spectrometry

Author:
Terent’ev, A. G.; Morozik, Yu. I.; Ivanova, M. V.; Dudkin, A. V.
Source:
Journal of analytical chemistry 2020 v.75 no.2 pp. 208-218
ISSN:
1061-9348
Subject:
phosphates,   etc   ; chemical structure; esters; ionization; ions; mass spectrometry; spectrometers;     Show all 7 Subjects
Abstract:
... The decay paths of negative molecular ions of phosphate esters, formed under the conditions of resonance electron capture, are of the same type and, therefore, predictable. A combination of mass spectra of the studied substances obtained by this method with the mass spectra of positive ions recorded in the convential electron ionization mode significantly expands the possibilities of their identif ...
DOI:
10.1134/S1061934820020161

12. Induction time and zeta potential study of nucleating and growing struvite crystals for phosphorus recovery improvements within fluidized bed reactors

Author:
Fromberg, Marcia; Pawlik, Marek; Mavinic, Donald S.
Source:
Powder technology 2020 v.360 pp. 715-730
ISSN:
0032-5910
Subject:
magnesium ammonium phosphate,   etc   ; crystals; fluidized beds; phosphorus; powders; zeta potential;     Show all 6 Subjects
Abstract:
... The properties of nucleating and growing struvite crystals are important aspects to pellet agglomeration and growth mechanisms in fluidized bed reactors (FBR). A new approach, using a laser to sense crystals of approximately 650 nm, was used to measure the induction time of nucleating struvite. The ability of the laser to indicate an approximate size ensured the presence of crystals in solution fo ...
DOI:
10.1016/j.powtec.2019.09.067

13. Erosion of Tortonian phosphatic intervals in upwelling zones: The role of internal waves

Author:
Brandano, M.; Ronca, S.; Di Bella, L.
Source:
Palaeogeography, palaeoclimatology, palaeoecology 2020 v.537 pp. 109405
ISSN:
0031-0182
Subject:
phosphates,   etc   ; Tortonian age; basins; carbonates; coasts; gravity; seawater; sediments;     Show all 8 Subjects
Abstract:
... During the Miocene, the upwelling is assumed to be important in the formation of many Mediterranean phosphate deposits in carbonate platform successions.There are different types of upwelling mechanisms such as equatorial upwellings, ice-edge upwellings and coastal upwellings. The carbonate platforms are mainly affected by wind-driven coastal upwelling systems. During upwelling season, the seawate ...
DOI:
10.1016/j.palaeo.2019.109405

14. Characterization of a group of peptides for potential applications in hydrogen phosphate and heavy metals accumulation

Author:
Zhang, Zhikun; Zhou, Yingshun; Wang, Ying; Zhang, Luhua; Li, Ying; Wang, Guangxi; Ji, Hongsheng; Liu, Yao
Source:
Chemosphere 2020 v.246 pp. 125735
ISSN:
0045-6535
Subject:
sodium phosphate; soluble phosphates,   etc   ; Escherichia coli; bioaccumulation; choline; culture media; heavy metals; histidine; hydrogen; metal ions; nickel; peptides; phosphorus; sewage;     Show all 14 Subjects
Abstract:
... Phosphorus and heavy metals are discarded to the domestic sewage in our daily life, it is necessary to find easy methods for phosphorus and heavy metals accumulation. Here, a group of short peptides (ChBpHs) were found to react with hydrogen phosphate forming insoluble substances. ChBpHs are composed by a choline binding peptides (ChBp) and a C-terminal histidine rich tail. The reaction region to ...
DOI:
10.1016/j.chemosphere.2019.125735

15. Efficient one-pot enzymatic synthesis of trehalose 6-phosphate using GH65 α-glucoside phosphorylases

Author:
Taguchi, Yodai; Saburi, Wataru; Imai, Ryozo; Mori, Haruhide
Source:
Carbohydrate research 2020 v.488 pp. 107902
ISSN:
0008-6215
Subject:
glucose 6-phosphate; phosphates,   etc   ; Lactococcus lactis; biosynthesis; cost effectiveness; glucose; glucosides; maltose; phosphoglucomutase; phosphorylase; plant development; stress response; trehalose; yeasts;     Show all 14 Subjects
Abstract:
... Trehalose 6-phosphate (Tre6P) is an important intermediate for trehalose biosynthesis. Recent researches have revealed that Tre6P is an endogenous signaling molecule that regulates plant development and stress responses. The necessity of Tre6P in physiological studies is expected to be increasing. To achieve the cost-effective production of Tre6P, a novel approach is required. In this study, we ut ...
DOI:
10.1016/j.carres.2019.107902

16. The properties of the linker in a mini-scaffoldin influence the catalytic efficiency of scaffoldin-mediated enzyme complexes

Author:
Meng, Dongdong; Wang, Juan; You, Chun
Source:
Enzyme and microbial technology 2020 v.133 pp. 109460
ISSN:
0141-0229
Subject:
fructose 6-phosphate; triose-phosphate isomerase,   etc   ; amino acid composition; amino acids; biocatalysis; biomimetics; engineering; fructose-bisphosphate aldolase; multienzyme complexes;     Show all 9 Subjects
Abstract:
... Synthetic enzyme complexes have been successfully used to accelerate the reaction rate of cascade enzyme biocatalysis. Protein scaffold-mediated enzyme complexes are often constructed by assembling cascade enzymes on the artificial protein scaffoldin to form sophisticated biomimetic architectures and enhance the catalytic efficiency of biocatalytic processes. However, the effects of the linker in ...
DOI:
10.1016/j.enzmictec.2019.109460

17. Influence of Microcystis sp. and freshwater algae on pH: Changes in their growth associated with sediment

Author:
Acuña-Alonso, Carolina; Lorenzo, Olalla; Álvarez, Xana; Cancela, Ángeles; Valero, Enrique; Sánchez, Ángel
Source:
Environmental pollution 2020 v.263 pp. 114435
ISSN:
0269-7491
Subject:
ferric phosphate; lead phosphates,   etc   ; Actinobacteria; Microcystis; absorbance; cell growth; crops; ecosystems; environmental impact; eutrophication; hepatotoxins; light intensity; microalgae; neurotoxins; pH; phytoplankton; pollution; sediments; temperature; Spain;     Show all 20 Subjects
Abstract:
... Samples from two reservoirs with eutrophication problems, located in Pontevedra and Ourense (Northwestern Spain), were cultured, along with a third crop from a reservoir with no problems detected in Ourense (Northwestern Spain). The samples were grown under the same conditions (with an average temperature of 21 ± 2 °C, and a 3000 lux light intensity) in triplicate, and their growth, absorbance and ...
DOI:
10.1016/j.envpol.2020.114435

18. Chemical behavior of fluorine and phosphorus in chemical looping gasification using phosphogypsum as an oxygen carrier

Author:
Yang, Jing; Ma, Liping; Liu, Hongpan; Guo, Zhiying; Dai, Quxiu; Zhang, Wei; Bounkhong, Keomounlath
Source:
Chemosphere 2020 v.248 pp. 125979
ISSN:
0045-6535
Subject:
monocalcium phosphate; tricalcium phosphate,   etc   ; calcium; fluorine; gasification; oxygen; phase transition; phosphogypsum; phosphorus; pollutants; sodium fluoride; synthesis gas; water solubility; water soluble phosphorus; China;     Show all 15 Subjects
Abstract:
... In China, the amount of phosphogypsum (PG) has exceeded 250 million tons with more than 55 million tons of growth rates each year. As the micro constituent, fluorine and phosphorus restrict the resourceful disposal of PG. This paper focused on chemical looping gasification (CLG) which used PG as an oxygen carrier, systematically investigated the gasification performance and chemical behavior of fl ...
DOI:
10.1016/j.chemosphere.2020.125979

19. Understanding phosphate sorption characteristics of mineral amendments in relation to stabilising high legacy P calcareous soil

Author:
Fan, Bingqian; Ding, Jiahui; Fenton, Owen; Daly, Karen; Chen, Qing
Source:
Environmental pollution 2020 v.261 pp. 114175
ISSN:
0269-7491
Subject:
aluminum phosphate; tricalcium phosphate,   etc   ; alum; aluminum hydroxide; best management practices; calcareous soils; dolomite; losses from soil; phosphorus; soil amendments; soil properties; sorption; vegetables; China;     Show all 14 Subjects
Abstract:
... In China, excessive phosphorus (P) application in protected vegetable fields has led to high legacy P stores. Soil amendment with alum or dolomite is one of many best management practices (BMPs) used to reduce P losses in calcareous soils. However, both the kinetics and mechanisms of P sorption and soil available P in amended soils are understudied. Herein, both aspects were looked at under contro ...
DOI:
10.1016/j.envpol.2020.114175

20. Directional culture of petroleum hydrocarbon degrading bacteria for enhancing crude oil recovery

Author:
Li, Hailan; Lai, Ruiqiu; Jin, Yulin; Fang, Xinxiang; Cui, Kai; Sun, Shanshan; Gong, Yejing; Li, Haonan; Zhang, Zhongzhi; Zhang, Guangqing; Zhang, Zhiyong
Source:
Journal of hazardous materials 2020 v.390 pp. 122160
ISSN:
0304-3894
Subject:
potassium dihydrogen phosphate; sodium phosphate,   etc   ; Arcobacter; Bacillus (bacteria); Pseudomonas; bacteria; bacterial growth; biodegradation; carbon; cyclohexanes; microbial communities; nitrogen; nutrients; oil fields; petroleum; phosphorus; sodium nitrate; surface tension;     Show all 18 Subjects
Abstract:
... An oxygen-constrained system of crude oil reservoir environment was constructed to stimulate the growth of indigenous microbes, such as petroleum hydrocarbon-degrading bacteria. Addition of nitrogen and phosphorus sources was investigated for the growth of petroleum hydrocarbon-degrading bacteria. The results show that nitrates and phosphates stimulated the growth of the bacteria and promoted the ...
DOI:
10.1016/j.jhazmat.2020.122160