Author: Mukta PatilPublisher:
ISBN:
Category :
Languages : en
Pages : 130
Book Description
Adsorption and Desorption of Perchlorate on Granular Activated Carbon
Author: Mukta PatilPerchlorate Adsorption Onto Granular Activated Carbon and Subsequent Desoprtion Via Sodium Borohydride
Author: Jerome James Alessandro SantosPublisher:
ISBN:
Category :
Languages : en
Pages : 118
Book Description
Evaluation of Tailored Granular Activated Carbon to Remove Perchlorate in the Presence of Oxyanions
Author: Judodine PattersonActivated Carbon for Water and Wastewater Treatment
Author: Ferhan CecenPublisher: John Wiley & Sons
ISBN: 3527639454
Category : Science
Languages : en
Pages : 409
Book Description
This monograph provides comprehensive coverage of technologies which integrate adsorption and biological processes in water and wastewater treatment. The authors provide both an introduction to the topic as well as a detailed discussion of theoretical and practical considerations. After a review of the basics involved in the chemistry, biology and technology of integrated adsorption and biological removal, they discuss the setup of pilot- and full-scale treatment facilities, covering powdered as well as granular activated carbon. They elucidate the factors that influence the successful operation of integrated systems. Their discussion on integrated systems expands from the effects of environmental to the removal of various pollutants, to regeneration of activated carbon, and to the analysis of such systems in mathematical terms. The authors conclude with a look at future needs for research and develoment. A truly valuable resource for environmental engineers, environmental and water chemists, as well as professionals working in water and wastewater treatment.
Adsorption of Perchlorate by Granular Media
Author: Nicholas Ross AntonPublisher:
ISBN:
Category : Adsorption
Languages : en
Pages : 382
Book Description
Tailoring and Regeneration of Granular Activated Carbon for Perchlorate Removal
Author: Weifang ChenPublisher:
ISBN:
Category :
Languages : en
Pages : 214
Book Description
Perchlorate contaminates waters in 15 US states that 15 million American could otherwise drink. Although, conventional granular activated carbon (GAC) has a very limited capacity for removing perchlorate, it was found that ammonia thermal tailoring could enhance its bed life.
Perchlorate Ion (C104) Removal Using an Electrochemically Induced Catalytic Reaction on Modified Activated Carbon
Author: Meredith Caitlyn LangillePublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Perchlorate is known to adversely affect the thyroid gland functions including iodide take up, thus perchlorate should be removed from drinking water. Bituminous coal-based activated carbon (AC) has been used for perchlorate removal in past years. Virgin carbon and carbon modified by oxidation with HNO3, NaOH and H2O2 were examined in this study for their ability to remove perchlorate by reduction or adsorption mechanisms. Surface functional groups formed on the modified AC (MAC) were examined with diffuse reflectance infrared spectrometry. Inhibition of perchlorate removal onto MAC by various anions ( - Cl, - 3 NO, and - 2 4 SO) and solution pH (4.5, 7.2 and 10.5) were examined to characterize the MACs before an electrochemical reaction was performed. Surface functional groups were increased by oxidation. Groups that were found on the carbon include, but are not limited to lactone, quinine, carboxylate, and nitrogenoxygen groups. The effect of pH on removal of perchlorate by MAC was greatly affected by the change in the zero point charge (ZPC) induced on the carbon by modification. Virgin carbon also experienced difficulty in removing perchlorate when solution pH was above the ZPC. Anion inhibition varied with the modification process. - 3 NO inhibited perchlorate removal only by the virgin carbon. The other anions showed no major effects on the removal efficiency of perchlorate by the carbons. Electrochemical processes did not show favorable results in removal of perchlorate. The dominant mechanism of perchlorate removal during desorption tests was adsorption onto the carbon surfaces via ion exchange.
Modified Activated Carbon Perchlorate Sorbents
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 42
Book Description
A new method for improving the selectivity of activated carbons for adsorbing perchlorate has been developed. The technique involves alkylation of functional groups present on the activated carbon surface. The modified activated carbon typically have adsorption capacities 5-10 times that of the parent activated carbon. The technique is believed to mainly alkylate the oxygen surface groups rather than the nitrogen surface groups.
Treatment of Water by Granular Activated Carbon
Author: Michael J. McGuirePublisher:
ISBN:
Category : Language Arts & Disciplines
Languages : en
Pages : 624
Book Description
Development of a Screening Model for Design and Costing of an Innovative Tailored Granular Activated Carbon Technology to Treat Perchlorate-contaminated Water
Author: William C. PowellPublisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 262
Book Description