Evidence map›Paper›PMID 32896734›Full record

ArticleThe Science of the total environment2021

Faeces - Urine separation via settling and displacement: Prototype tests for a novel non-sewered sanitation system.

Jan Hennigs, Kristin T Ravndal, Alison Parker, Matt Collins, Ying Jiang, Athanasios J Kolios, Ewan McAdam, Leon Williams, Sean Tyrrel

Abstract read
In one paragraph

Article in The Science of the total environment, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

5 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Jan HennigsSchool of Water, Energy and Environment, Cranfield University, United Kingdom.
Kristin T RavndalSchool of Water, Energy and Environment, Cranfield University, United Kingdom.
Alison ParkerSchool of Water, Energy and Environment, Cranfield University, United Kingdom.
Matt CollinsSchool of Water, Energy and Environment, Cranfield University, United Kingdom; Freeform Design & Innovation Ltd., Flitwick, United Kingdom.
Ying JiangSchool of Water, Energy and Environment, Cranfield University, United Kingdom.
Athanasios J KoliosSchool of Water, Energy and Environment, Cranfield University, United Kingdom; University of Strathclyde, Glasgow, United Kingdom.
Ewan McAdamSchool of Water, Energy and Environment, Cranfield University, United Kingdom.
Leon WilliamsSchool of Water, Energy and Environment, Cranfield University, United Kingdom.
Sean TyrrelSchool of Water, Energy and Environment, Cranfield University, United Kingdom. Electronic address: s.tyrrel@cranfield.ac.uk.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The development of novel, non-sewered sanitation systems like the Nano Membrane Toilet requires thorough investigation of processes that may seem well-understood. For example, unlike the settling of primary sludge, the separation of solids from liquids in a small-volume container at the scale of a household toilet has not been studied before. In two sets of experiments, the settling of real faeces and toilet paper in settling columns and the settling of synthetic faeces in a conical tank are investigated to understand the factors affecting the liquid quality for downstream treatment processes. Toilet paper is found to be a major inhibitor to settling of solids. While a lower overflow point results in better phase separation through displacement of liquid, a higher overflow point and frequent removal of solids may be more advantageous for the liquid quality.

Indexed as

SanitationWaste Disposal, FluidFecesSewageSewageDOEPrototypingTesting

Identifiers

PMID32896734
PMCPMC7674630

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.