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Related Concept Videos

Coagulation01:06

Coagulation

Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
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Microbial Leaching

Microbial leaching, also known as bioleaching, is an environmentally favorable method for extracting metals from low-grade ores using specific microorganisms. This biotechnological approach is particularly valuable for mining operations targeting copper, gold, and uranium, where traditional extraction methods may be economically or environmentally impractical.Copper Leaching and Microbial CatalysisIn copper bioleaching, crushed ore is arranged into heaps and irrigated with a dilute sulfuric...
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Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:
Electrolysis03:00

Electrolysis

In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
Hydroboration-Oxidation of Alkenes03:08

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In addition to the oxymercuration–demercuration method, which converts the alkenes to alcohols with Markovnikov orientation, a complementary hydroboration-oxidation method yields the anti-Markovnikov product. The hydroboration reaction, discovered in 1959 by H.C. Brown, involves the addition of a B–H bond of borane to an alkene giving an organoborane intermediate. The oxidation of this intermediate with basic hydrogen peroxide forms an alcohol.

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Assessment of Boron Doped Diamond Electrode Quality and Application to In Situ Modification of Local pH by Water Electrolysis
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Boron removal from geothermal waters by electrocoagulation.

A Erdem Yilmaz1, Recep Boncukcuoğlu, M Muhtar Kocakerim

  • 1Atatürk University, Faculty of Engineering, Department of Environmental Engineering, Erzurum, Turkey. aerdemy@atauni.edu.tr

Journal of Hazardous Materials
|October 2, 2007
PubMed
Summary

Electrocoagulation effectively removes excess boron from geothermal irrigation water. This process achieved 95% boron removal efficiency under optimal conditions, making thermal waters safer for agricultural use.

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A Dual-Functional Electroactive Filter Towards Simultaneously Sb(III) Oxidation and Sequestration

Published on: December 5, 2019

Area of Science:

  • Environmental Science
  • Water Treatment Technology
  • Geochemistry

Background:

  • Geothermal waters in Turkey often contain high boron concentrations, posing risks for agricultural irrigation.
  • Excess boron in soil can be detrimental to plant growth, necessitating boron removal from irrigation sources.
  • Minimal boron levels are essential for irrigation, creating a need for effective treatment methods.

Purpose of the Study:

  • To investigate the efficacy of electrocoagulation (EC) for removing boron from geothermal waters.
  • To determine the optimal operational parameters for boron removal using EC.
  • To assess the feasibility of using treated geothermal water for irrigation.

Main Methods:

  • Electrocoagulation (EC) was employed as the primary treatment method.
  • Key operational parameters studied included current density (CD), solution pH, and temperature.
  • Boron removal efficiency was measured under varying conditions.

Main Results:

  • Boron removal efficiency increased from pH 4.0 to 8.0, decreasing at pH 10.0.
  • Maximum boron removal efficiency reached 95% with increasing current density from 1.5 to 6.0 mA/cm(2).
  • Higher solution temperatures (313 K and 333 K) enhanced boron removal efficiency.

Conclusions:

  • Electrocoagulation is a highly effective method for removing boron from geothermal waters.
  • Optimal conditions for boron removal were identified, achieving up to 95% efficiency.
  • Treated geothermal water can potentially be utilized for irrigation, mitigating boron-related soil contamination.