scholarly journals Decontamination of spent iron-oxide coated sand from filters used in arsenic removal

Chemosphere ◽  
2013 ◽  
Vol 92 (2) ◽  
pp. 196-200 ◽  
Author(s):  
Ismail M.M. Rahman ◽  
Zinnat A. Begum ◽  
Hikaru Sawai ◽  
Teruya Maki ◽  
Hiroshi Hasegawa
Keyword(s):  
Iron Oxide ◽  
Arsenic Removal ◽  
Coated Sand

Assessment of arsenic removal efficiency by an iron oxide-coated sand filter process

2018 ◽  
Vol 25 (26) ◽  
pp. 26135-26143 ◽  
Author(s):  
Arianna Callegari ◽  
Navarro Ferronato ◽  
Elena Cristina Rada ◽  
Andrea G. Capodaglio ◽  
Vincenzo Torretta
Keyword(s):  
Iron Oxide ◽  
Removal Efficiency ◽  
Arsenic Removal ◽  
Sand Filter ◽  
Filter Process ◽  
Coated Sand

Arsenic Removal by a Colloidal Iron Oxide Coated Sand

2007 ◽  
Vol 133 (9) ◽  
pp. 891-898 ◽  
Author(s):  
Ilwon Ko ◽  
Allen P. Davis ◽  
Ju-Yong Kim ◽  
Kyoung-Woong Kim
Keyword(s):  
Iron Oxide ◽  
Arsenic Removal ◽  
Colloidal Iron ◽  
Colloidal Iron Oxide ◽  
Coated Sand

A comparison of conventional and non-conventional treatment technologies on arsenic removal from water

2002 ◽  
Vol 2 (5-6) ◽  
pp. 119-125 ◽  
Author(s):  
H.H. Ngo ◽  
S. Vigneswaran ◽  
J.Y. Hu ◽  
O. Thirunavukkarasu ◽  
T. Viraraghavan
Keyword(s):  
Iron Oxide ◽  
Hybrid System ◽  
Arsenic Removal ◽  
Mixing Time ◽  
High Rate ◽  
Permeate Flux ◽  
Arsenic Adsorption ◽  
Column Adsorption ◽  
Coated Sand ◽  
Very High

In this study, four treatment methods were used to remove arsenic from water, namely: (i) chemical precipitation, (ii) arsenic adsorption onto iron-oxide-coated sand, (iii) high-rate saturated floating-medium flocculator/filter and (iv) membrane hybrid system (adsorption-microfiltration). The results indicated that more than 90% of total arsenic was removed by using FeCl3 (40 mg/L) as coagulant. The removal efficiency was 10% lower when polysilicato-iron (PSI, 2.5 mg/L) was used as a flocculant. The results of both the batch and column adsorption studies showed that iron-oxide-coated sand can effectively be used to achieve very high levels of arsenic removal (less than 5 μm/L as As in drinking water). Arsenic was removed up to 78% from the packed polystyrene beads filter with in-line FeCl3 addition at a high loading rate of 30 m3/m2.h. When powder activated carbon (PAC) was used in the membrane hybrid system, 87% removal of arsenic was achieved. A mixing time of 2.7 min with the mixing intensity of 87.8 s-1 were used. A very high filtration (permeate flux of 760 L/m2.h) was observed with a membrane of pore size of 0.2 μm.

Arsenic removal by iron oxide coated sponge: Experimental performance and mathematical models

2010 ◽  
Vol 182 (1-3) ◽  
pp. 723-729 ◽  
Author(s):  
Tien Vinh Nguyen ◽  
Saravanamuthu Vigneswaran ◽  
Huu Hao Ngo ◽  
Jaya Kandasamy
Keyword(s):  
Iron Oxide ◽  
Mathematical Models ◽  
Arsenic Removal ◽  
Experimental Performance

Modeling Arsenic(V) Removal from Water by Sulfate Modified Iron‐Oxide Coated Sand (SMIOCS)

2005 ◽  
Vol 39 (3) ◽  
pp. 645-666 ◽  
Author(s):  
Rakesh Chandra Vaishya ◽  
Sudhir Kumar Gupta
Keyword(s):  
Iron Oxide ◽  
Coated Sand

scholarly journals Ultra-long magnetic nanochains for highly efficient arsenic removal from water

2014 ◽  
Vol 2 (32) ◽  
pp. 12974-12981 ◽  
Author(s):  
Gautom Kumar Das ◽  
Cecile S. Bonifacio ◽  
Julius De Rojas ◽  
Kai Liu ◽  
Klaus van Benthem ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Arsenic Removal ◽  
Oxide Nanoparticles ◽  
Highly Efficient

Ultralong chains of iron oxide nanoparticles make excellent adsorbents of arsenic in water.

scholarly journals Role of solution chemistry in the retention and release of graphene oxide nanomaterials in uncoated and iron oxide-coated sand

2017 ◽  
Vol 579 ◽  
pp. 776-785 ◽  
Author(s):  
Dengjun Wang ◽  
Chongyang Shen ◽  
Yan Jin ◽  
Chunming Su ◽  
Lingyang Chu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Iron Oxide ◽  
Solution Chemistry ◽  
Coated Sand

scholarly journals Removal of iron and arsenic (III) from drinking water using iron oxide-coated sand and limestone

2013 ◽  
Vol 4 (2) ◽  
pp. 175-182 ◽  
Author(s):  
Rashmi R. Devi ◽  
Iohborlang M. Umlong ◽  
Bodhaditya Das ◽  
Kusum Borah ◽  
Ashim J. Thakur ◽  
...  
Keyword(s):  
Drinking Water ◽  
Iron Oxide ◽  
Coated Sand
Sign in / Sign up

Export Citation Format

Share Document