Despite the harmful effect of boron on human health, it is an industrial precious material and seawater is a great source of it. In this regard Osmotec has developed a ground breaking technology named OTOBOR™ or simply

boron

removal / extraction systems

What is OTOBOR™

Numerated as precious material in industry, The Boron exist in some drinking water sources is an hazardous contaminant. In fact chronic exposure of boron may cause cutaneous disorders, retarded growth and have adverse impact on the male reproductive system. According to world health organization (WHO) the maximum allowable boron in drinking water is 0.5 mg/lit.

Boron present is seawater is difficult to remove by even our recent membrane technologies. Indeed Boron in seawater mainly exist in form of boric acid which is neutral in charge and pass trough RO membrane in the same way water molecules pass. As result designer sometimes consider a second pass at huge cost to meet required standard level of Boron in drinking water.

 

Conventional Double pass RO

picture 1: Conventional Double pass RO

Despite its harmful effect on human health, boron is an industrial precious material and seawater is a great source of it. In this regard Osmotec hasdeveloped a ground breaking technology named OTOBOR™ for boron removal, not only to maintain public health but also to help industries trough introducing a new reliable source of boron.

Based on surface absorption techniques the revolutionary OTOBOR™  echnology could extract boron from sea water in an efficient way with the lowest possible CAPEX and negative OPEX.

MC2200™ the key element

The key element in OTOBOR™ technology is our novel mineral based MC2200™ which is an highly porous Nano absorbent with ability to make flocks bigger than 100 μm. Suitable to remove via conventional sand filters. Following table briefly shows properties of the media.

picture 2: Nano porous surface of the MC2200™

table 1: The MC2200™ Specification

Surface molar ratio (Ca/Mg)0.6
Specific surface area (m²/g)12
Pore volume (cm³/g)0.2

Advantages of OTOBOR™

Process description

Directly from water intake after pH djustment our mineral based dual coagulant-absorbent the MC-2200 will inject to an specific static mixer; after absorbing boric acid on the ultrapure absorbent surface, large flock with diameter bigger than 100 micron will shape on the out put of mixer and by maintaining its initial pressure without requiring addition pump station it will flow to filtration step.

picture 3: OTOBOR™ Process

Like other micro contaminants conventionally remove by the sand filter in all desalination plants, the shaped boron flocks will trap on the surface of the bed in the filter. It should mention that due to the selectivity and efficacy of the MC-2200, the amount of produced sludge compare to other colloids trapping in regular operating of sand filters is negligible, thus no additional consideration is required for designing the regular sand filters in new plant and no change would happen in the normal operation of existing plants employing ATOBOR­™ technology.

picture 4: boron removal system

Accumulated sludge containing boron trapped on the surface of sand filter will periodically discharge to an sludge holding tank by normal backwash sequence of the filters. The sludge then will continuously pump to leaching unit specially designed for extraction of precious boric acid

Leaching unit for boric acid extraction

table: The MC2200™ Specification

Capacity (m³/day)500 – 300k
Removal Efficiency (%)95-99
Range of Boron in feed (ppm)10 - 200
Energy consumption (kw/m³)0.2
MC2200™ dosage (ppm)1-20
ACID dosage2-3
OPEX ($/kg B(OH)4)-20
CAPEX ($/m³)200
400PngdpiLogoCropped (1)

Despite the harmful effect of boron on human health, it is an industrial precious material and seawater is a great source of it. In this regard Osmotec has developed a ground breaking technology named OTOBOR™ or simply

contact us