Evidence map›Paper›PMID 33731790›Full record

ArticleScientific reports2021

The role of bacterial urease activity on the uniformity of carbonate precipitation profiles of bio-treated coarse sand specimens.

Charalampos Konstantinou, Yuze Wang, Giovanna Biscontin, Kenichi Soga

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
6.3field-weighted citation impact, top 2% of its field
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

20 citing papers in PubMed, 94 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Microbially Induced Calcium Carbonate Precipitation byApplied and environmental microbiology · 2023
    Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Engineering in life sciences · 2022
    Article
  16. Article
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  18. Article
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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

4 authors at 3 institutions in 3 countries.

Charalampos KonstantinouEngineering Department, University of Cambridge, Cambridge, CB2 1PZ, UK. ck494@cam.ac.uk.ORCID 0000-0002-4662-5327
Yuze WangDepartment of Ocean Science and Engineering, Southern University of Science and Technology, Southern Marine Science and Engineering Laboratory (Guangzhou), Shenzhen, 518055, China. wangyz@sustech.edu.cn.ORCID 0000-0003-3085-5299
Giovanna BiscontinEngineering Department, University of Cambridge, Cambridge, CB2 1PZ, UK.ORCID 0000-0002-4662-5650
Kenichi SogaDepartment of Civil and Environmental Engineering, University of California, Berkeley, CA, 94720, USA.
University of Cambridge · GBSouthern University of Science and Technology · CNUniversity of California, Berkeley · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Protocols for microbially induced carbonate precipitation (MICP) have been extensively studied in the literature to optimise the process with regard to the amount of injected chemicals, the ratio of urea to calcium chloride, the method of injection and injection intervals, and the population of the bacteria, usually using fine- to medium-grained poorly graded sands. This study assesses the effect of varying urease activities, which have not been studied systematically, and population densities of the bacteria on the uniformity of cementation in very coarse sands (considered poor candidates for treatment). A procedure for producing bacteria with the desired urease activities was developed and qPCR tests were conducted to measure the counts of the RNA of the Ure-C genes. Sand biocementaton experiments followed, showing that slower rates of MICP reactions promote more effective and uniform cementation. Lowering urease activity, in particular, results in progressively more uniformly cemented samples and it is proven to be effective enough when its value is less than 10 mmol/L/h. The work presented highlights the importance of urease activity in controlling the quality and quantity of calcium carbonate cements.

Identifiers

PMID33731790
PMCPMC7969948
OpenAlexW3139251847

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.