PMID- 37178834
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20230613
LR  - 20230613
IS  - 1879-1026 (Electronic)
IS  - 0048-9697 (Linking)
VI  - 887
DP  - 2023 Aug 20
TI  - Impact of microplastic pollution in terrestrial ecosystem on index and 
      engineering properties of sandy soil: An experimental investigation.
PG  - 164049
LID - S0048-9697(23)02670-0 [pii]
LID - 10.1016/j.scitotenv.2023.164049 [doi]
AB  - Sandy soils cover a major portion of various natural and managed ecosystems. Soil 
      health plays a key role in achieving sustainable development goals 2, 3,11, 12, 
      13 and 15. The engineering properties of soil are crucial in determining the 
      stability and safety of structures. The increasing microplastic contamination in 
      the soil ecosystem creates a need to study the effect of terrestrial microplastic 
      contamination on the strength and stability of soil and therefore on the index 
      properties and engineering properties of the soil. The present paper 
      investigates, the effects of varying concentrations (2 %,4 %,6 % (w/w)) of 
      Low-density polyethylene (LDPE), Polyvinyl chloride (PVC), and High-density 
      polyethylene (HDPE) microplastics on the index properties and engineering 
      properties of sandy soil for varying observation days. The moisture content, 
      specific gravity, shear strength, compaction characteristics and permeability are 
      found to be significantly altered by changing the concentrations of microplastics 
      but, insignificant changes are observed with respect to observation days. The 
      shear strength value of non-contaminated sandy soil is 1.74 kg/cm(2) which 
      reduces after 5th observation days as 0.85 kg/cm(2), 0.90 kg/cm(2), and 
      0.91 kg/cm(2) for 2 %, 4 %, and 6 % LDPE microplastic contamination respectively. 
      Similar trends are observed for PVC and HDPE microplastic contamination. It is 
      also observed that although the shear strength value decreases, the cohesion 
      value increases for the microplastics-contaminated sandy soil. The coefficient of 
      permeability for non-contaminated sample is 0.0004 m/s which reduces for 2 % LDPE 
      microplastic contamination to 0.000319 m/s, for 4 % to 0.000217 m/s, and 6 % to 
      0.000208 m/s respectively. Similar trends of are observed for the PVC and HDPE 
      microplastic contamination. The soil strength and structural stability are 
      affected due to alterations in soil index and engineering properties. The paper 
      provides detailed experimental evidence of the impact of microplastic pollution 
      on index properties and engineering properties of sandy soil.
CI  - Copyright (c) 2023 Elsevier B.V. All rights reserved.
FAU - Dike, Sangita
AU  - Dike S
AD  - Department of Civil Engineering, Symbiosis Institute of Technology (SIT), 
      Symbiosis International (Deemed University) (SIU), Pune, India.
FAU - Apte, Sayali
AU  - Apte S
AD  - Department of Civil Engineering, Symbiosis Institute of Technology (SIT), 
      Symbiosis International (Deemed University) (SIU), Pune, India. Electronic 
      address: sayali.apte@sitpune.edu.in.
LA  - eng
PT  - Journal Article
DEP - 20230512
PL  - Netherlands
TA  - Sci Total Environ
JT  - The Science of the total environment
JID - 0330500
SB  - IM
OTO - NOTNLM
OT  - Engineering properties
OT  - High-density polyethylene
OT  - Index properties
OT  - Low-density polyethylene
OT  - Microplastic contamination
OT  - Polyvinyl chloride
OT  - Sandy soil
COIS- Declaration of competing interest The authors state that they do not have any 
      conflict of interest.
EDAT- 2023/05/14 01:07
MHDA- 2023/05/14 01:08
CRDT- 2023/05/13 19:26
PHST- 2023/02/21 00:00 [received]
PHST- 2023/05/06 00:00 [revised]
PHST- 2023/05/06 00:00 [accepted]
PHST- 2023/05/14 01:08 [medline]
PHST- 2023/05/14 01:07 [pubmed]
PHST- 2023/05/13 19:26 [entrez]
AID - S0048-9697(23)02670-0 [pii]
AID - 10.1016/j.scitotenv.2023.164049 [doi]
PST - ppublish
SO  - Sci Total Environ. 2023 Aug 20;887:164049. doi: 10.1016/j.scitotenv.2023.164049. 
      Epub 2023 May 12.