Advertisement

Topics

Boron removal and recovery from concentrated wastewater using a microwave hydrothermal method.

Summary of "Boron removal and recovery from concentrated wastewater using a microwave hydrothermal method."

Boron compounds are widely-used raw materials in industries. However, elevated boron concentrations in aqueous systems may be harmful to human and plants. In this study, calcium hydroxide (Ca(OH)(2)) alone and Ca(OH)(2) with phosphoric acid (H(3)PO(4)) addition (P-addition) were used to remove and recover boron from wastewater using hydrothermal methods. A microwave (MW) hydrothermal method was used and compared with the conventional heating (CH) method in batch experiments. Physicochemical properties of the precipitates obtained from both methods were analysed by XRD, SEM with EDX and BET. For the case of Ca(OH)(2) alone and the MW method, experimental results showed that boron recovery efficiency reached 90% within 10min, and crystals of Ca(2)B(2)O(5)·H(2)O were found in the precipitates as indicated by the XRD analysis. For the case of P-addition and the MW method, boron recovery efficiency reached 99% within 10min, and calcium phosphate species (CaHPO(4)·H(2)O, CaHPO(4) and Ca(10)(PO(4))(6)(OH)(2)) were formed. The experimental results of this study indicate that the required reaction time of the MW method was much less than that of the CH method, and the MW method is an effective and efficient method for boron removal and recovery from concentrated wastewater.

Affiliation

Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chou-Shan Rd., Taipei 106, Taiwan.

Journal Details

This article was published in the following journal.

Name: Journal of hazardous materials
ISSN: 1873-3336
Pages: 1431-7

Links

DeepDyve research library

PubMed Articles [6373 Associated PubMed Articles listed on BioPortfolio]

Computation of adsorption parameters for the removal of dye from wastewater by microwave assisted sawdust: Theoretical and experimental analysis.

In this research, the microwave assistance has been employed for the preparation of novel material from agro/natural bio-waste i.e. sawdust, for the effective removal of methylene blue (MB) dye from a...

Natural light-micro aerobic condition for PSB wastewater treatment:A flexible, simple and effective resource recovery wastewater treatment process.

Photosynthetic bacteria (PSB) have two sets of metabolic pathways. They can degrade pollutants through light metabolic under light-anaerobic or oxygen metabolic pathways under dark-aerobic conditions....

Removal of boron and fluoride in wastewater using Mg-Al layered double hydroxide and Mg-Al oxide.

Mg-Al layered double hydroxide intercalated with NO3(-) and Mg-Al oxide were found to remove hazardous materials such as B and As, as well as Cl(-) and SO4(2-), from artificial and real hot spring was...

Recovery of ammonia from domestic wastewater effluents as liquid fertilizers by integration of natural zeolites and hollow fibre membrane contactors.

The integration of up-concentration processes to increase the efficiency of primary sedimentation, as a solution to achieve energy neutral wastewater treatment plants, requires further post-treatment ...

Removal of boron from wastewater: Evaluation of seven poplar clones for B accumulation and tolerance.

Boron (B) contamination of wastewater is a serious environmental and health problem, which has proved difficult to remediate. One potential approach is phytoremediation, i.e., the use of plants to ext...

Clinical Trials [2028 Associated Clinical Trials listed on BioPortfolio]

Boron Neutron Capture Therapy in Treating Patients With Melanoma

RATIONALE: Boron neutron capture therapy may selectively kill tumor cells without harming normal tissue. PURPOSE: Phase II trial to study the effectiveness of boron neutron capture therap...

Boron Neutron Capture Therapy (BNCT) as Treatment of Glioblastoma

Boron Neutron Capture Therapy (BNCT) is an experimental radiation therapy technique that is based on the principle of irradiating boron atoms with neutrons. When neutrons have relatively l...

Boron Neutron Capture Therapy (BNCT) Combined With Cetuximab in the Treatment of Locally Recurred Head and Neck Cancer

The purpose of the study is to investigate efficacy and safety boron neutron capture therapy (BNCT) administered in combination with cetuximab in the treatment of head and neck cancer that...

BNCT to Treat Glioma That Has Progressed Following Radiotherapy

Boron Neutron Capture Therapy (BNCT) is an experimental radiation therapy technique which is based on the principle of irradiating boron atoms with neutrons. When neutrons have relatively ...

Boron Neutron Capture Therapy Following Surgery in Treating Patients With Glioblastoma Multiforme Removed During Surgery

RATIONALE: Boron neutron capture therapy may selectively kill tumor cells without harming normal tissue. PURPOSE: This phase I trial is studying the side effects and best dose of boron ne...

Medical and Biotech [MESH] Definitions

A trace element with the atomic symbol B, atomic number 5, and atomic weight 10.81. Boron-10, an isotope of boron, is used as a neutron absorber in BORON NEUTRON CAPTURE THERAPY.

Inorganic or organic compounds that contain boron as an integral part of the molecule.

A technique for the treatment of neoplasms, especially gliomas and melanomas in which boron-10, an isotope, is introduced into the target cells followed by irradiation with thermal neutrons.

Removal of tissue by vaporization, abrasion, or destruction. Methods used include heating tissue by hot liquids or microwave thermal heating, freezing (CRYOABLATION), chemical ablation, and photoablation with LASERS.

Tendency of fluids (e.g., water) to move from the less concentrated to the more concentrated side of a semipermeable membrane.

Quick Search
Advertisement
 


DeepDyve research library

Relevant Topic

Nutrition
Within medicine, nutrition (the study of food and the effect of its components on the body) has many different roles. Appropriate nutrition can help prevent certain diseases, or treat others. In critically ill patients, artificial feeding by tubes need t...


Searches Linking to this Article