In the published article, there was an error in Table 4 as published. The amount of total nitrogen (Ntotal) in faecal sludge in the original article based on the median concentration of total nitrogen was 188 mg/L (range 51.2–657 mg/L) (Eliyan et al., 2022). According to the corrigendum of Eliyan et al. (2022) the concentration of total nitrogen in Phnom Penh ranged between 1,500–3,300 mg/L and median concentration was 2,000 mg/L. The corrected Table 4 and its caption appear below.
TABLE 4
| Resource | Generation ratea (kg/cap/year) | Amount in excretab (kg/year) | Amount in faecal sludgec (kg/year) |
|---|---|---|---|
| Total nitrogen in excreta | 3.12 | 955,500 | — |
| Ntot in faecal sludge | — | — | |
| Ntot to Cheung Ek | — | 552,000 | |
| Ntot to Kob Srov | — | 403,000 | |
| Total Phosphorus in excreta | 0.45 | 137,000 | |
| Ptot in faecal sludge | 12,980 | ||
| Ptot to Cheung Ek | — | 79,600 | 7,500 |
| Ptot to Kob Srov | — | 58,200 | 5,480 |
Estimated amounts of resources (total nitrogen (Ntot) and total phosphorus (Ptot)) contained in excreta (urine + faeces) and in faecal sludge generated annually in Phnom Penh and discharged to Cheung Ek wetland and Kob Srov wetland.
Equations 5 and 6.
The number of population used for this calculation was 306,238, represented the population used onsite sanitation with experiences of emptying their containments (Frenoux et al., 2011; Peal et al., 2015; NIS, 2020).
The median concentration of total nitrogen was 2000 mg/l (corrigendum of Eliyan et al., 2022) and total phosphorus was 400 mg/L (Eliyan et al., 2022). Note that it is Q4 x concentration.
The authors would like to apologies for this error and state that this does not change the scientific conclusions of the article in anyway. The original article has been updated.
Statements
Publisher’s note
All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article, or claim that may be made by its manufacturer, is not guaranteed or endorsed by the publisher.
Summary
Keywords
faecal sludge management (FSM), geographic information system (GIS), nutrient recovery, onsite sanitation, sanitation service chain, spatial analysis
Citation
Eliyan C, McConville JR, Zurbrügg C, Koottatep T, Sothea K and Vinnerås B (2023) Corrigendum: Generation and management of faecal sludge quantities and potential for resource recovery in Phnom Penh, Cambodia. Front. Environ. Sci. 11:1264993. doi: 10.3389/fenvs.2023.1264993
Received
21 July 2023
Accepted
02 August 2023
Published
11 August 2023
Volume
11 - 2023
Edited and reviewed by
Devendra P. Saroj, University of Surrey, United Kingdom
Updates
Copyright
© 2023 Eliyan, McConville, Zurbrügg, Koottatep, Sothea and Vinnerås.
This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
*Correspondence: Chea Eliyan, chea.eliyan@slu.se, chea.eliyan@rupp.edu.kh
Disclaimer
All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.