Abatement of As and hydrated silica from natural groundwater by electrocoagulation in a continuous plant having an electrolyzer and a flocculator-settler

2022 ◽  
Vol 281 ◽  
pp. 119895
Author(s):  
Álvaro Gutiérrez ◽  
Juan F. Rodríguez ◽  
Locksley F. Castañeda ◽  
José L. Nava ◽  
Oscar Coreño ◽  
...  
2020 ◽  
Vol 94 (10) ◽  
pp. 2103-2107
Author(s):  
A. R. Isahakyan ◽  
N. H. Zulumyan ◽  
S. A. Melikyan ◽  
H. A. Beglaryan
Keyword(s):  

1996 ◽  
Vol 32 (6) ◽  
pp. 331-334
Author(s):  
V. V. Turov ◽  
O. A. Zaporozhets ◽  
O. Yu. Nadzhafova ◽  
V. V. Sukhan

Author(s):  
A. M. Shevyakov ◽  
G. N. Kuznetsova ◽  
V. B. Aleskovskii
Keyword(s):  

1999 ◽  
Vol 576 ◽  
Author(s):  
Masaaki Kubo ◽  
Seisuke Takashima ◽  
Kanji Tsuru ◽  
Satoshi Hayakawa ◽  
Akiyoshi Osaka ◽  
...  

ABSTRACTHydrated silica rich Si-OH and Si-0- groups serve in a body environment as sites for nucleation of apatite, and are known as an essential chemical species for bioactive materials. Organic polymers having surface modified with the hydrated silica will show bioactivity: bone tissues grow toward the apatite layer and bond to materials. Thus MOPS-M (3-methacryloxypropyltrimethoxysilane) was grafted under emulsion polymerization procedure to high density polyethylene (HDPE), poly (vinyl chloride) (PVC) and polyamide (PA) substrates to examine in vitro deposition of apatite (bioactivity) after soaking in a simulated body fluid (Kokubo solution). Bioactivity was confirmed for the grafted PVC and PA substrates and discussed in terms of contact angle and relative amount of grafted silane molecules.


Author(s):  
A. T. Barber ◽  
A. H. Taylor

The paper gives an account of some of the mechanical difficulties experienced in the development and operation of experimental plant for the hydrogenation of coal and tar for the production of motor spirit. Particulars of the various stages of progress are given, from small autoclaves up to a continuous plant capable of producing up to 300 gallons of spirit per day. The pressure plant is operated at 3,000 to 6,000 lb. per sq. in., and at temperatures up to 950 deg. F. Hydrogen produces complete disintegration of the structure of mild steel under the higher temperature conditions. The use of special alloy steels reduces the liability to hydrogen attack, giving longer working life and allowing higher working pressures, but satisfactory service can best be obtained by insulating the pressure-resisting walls from the heating medium so as to avoid heating the metal beyond 200 deg. F. Various methods of making suitable joints for high-pressure pipes and cylinders are described, and the results of microscopic examination of sections of cylinders are given in Appendixes.


2010 ◽  
Vol 114 (29) ◽  
pp. 9485-9495 ◽  
Author(s):  
Nadia N. Casillas-Ituarte ◽  
Xiangke Chen ◽  
Hardy Castada ◽  
Heather C. Allen

2017 ◽  
Vol 42 (2) ◽  
pp. 67-71
Author(s):  
I.R. Ganeev ◽  
◽  
Kh.T. Karimov ◽  
I.Kh. Masalimov ◽  
◽  
...  

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