Effect of granular activated carbon type and age on quenching H<sub>2</sub>O<sub>2</sub>residuals after UV/H<sub>2</sub>O<sub>2</sub>drinking water treatment
Bibliographic record
Abstract
Research Article| October 19 2015 Effect of granular activated carbon type and age on quenching H2O2 residuals after UV/H2O2 drinking water treatment Jinghong (Elena) Li; Jinghong (Elena) Li 1Department of Civil Engineering, University of Toronto, 35 St. George St., Toronto, Canada M5S 1A4 Search for other works by this author on: This Site PubMed Google Scholar Arash Zamyadi; Arash Zamyadi 1Department of Civil Engineering, University of Toronto, 35 St. George St., Toronto, Canada M5S 1A4 Search for other works by this author on: This Site PubMed Google Scholar Ron Hofmann Ron Hofmann 1Department of Civil Engineering, University of Toronto, 35 St. George St., Toronto, Canada M5S 1A4 E-mail: ron.hofmann@utoronto.ca Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (2016) 65 (1): 28–36. https://doi.org/10.2166/aqua.2015.134 Article history Received: March 05 2015 Accepted: September 04 2015 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Cite Icon Cite Permissions Search Site Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsThis Journal Search Advanced Search Citation Jinghong (Elena) Li, Arash Zamyadi, Ron Hofmann; Effect of granular activated carbon type and age on quenching H2O2 residuals after UV/H2O2 drinking water treatment. Journal of Water Supply: Research and Technology-Aqua 16 February 2016; 65 (1): 28–36. doi: https://doi.org/10.2166/aqua.2015.134 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Granular activated carbon (GAC) can be used to quench residual hydrogen peroxide (H2O2) after ultraviolet (UV)-H2O2 advanced oxidation processes in drinking water treatment. Bench- and pilot-scale studies examined the possible loss of GAC reactivity due to continuous exposure to natural water from a water treatment plant in both the presence and absence of H2O2. Six common types of GAC were evaluated. The bench- and pilot-scale tests consistently showed that all GACs lost a significant degree of reactivity with H2O2 during the first 25,000 bed volumes of water treated, but then further deterioration to beyond 100,000 bed volumes was minimal. The loss of reactivity was due mostly to exposure to the natural water, with continuous exposure to H2O2 having little impact, suggesting that the reaction with H2O2 may be catalytic whereas the GAC becomes fouled by natural organic matter or other constituents in the natural water. The six GACs exhibited different reaction rates with H2O2, suggesting that GAC type might be an important consideration for process design. advanced oxidation, granular activated carbon, hydrogen peroxide © IWA Publishing 2016 You do not currently have access to this content.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".