The Application of Seabed Silt in the Preparation of Artificial Algal Reefs

Large amounts of silt have been deposited on the seabed in China's coastal areas due to intensive coastal development and marine raft aquaculture, which are the main causes of local marine environmental disasters. In this study, seabed silt was tested as a potential raw material for artificial...

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Veröffentlicht in:Applied sciences 2020-10, Vol.10 (20), p.7279, Article 7279
Hauptverfasser: Jiang, Zhaoyang, Zhang, Jiating, Nie, Zhaoyi, Guo, Zhansheng, Zhu, Lixin, Cong, Wei, Chen, Yuan, Liang, Zhenlin
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container_issue 20
container_start_page 7279
container_title Applied sciences
container_volume 10
creator Jiang, Zhaoyang
Zhang, Jiating
Nie, Zhaoyi
Guo, Zhansheng
Zhu, Lixin
Cong, Wei
Chen, Yuan
Liang, Zhenlin
description Large amounts of silt have been deposited on the seabed in China's coastal areas due to intensive coastal development and marine raft aquaculture, which are the main causes of local marine environmental disasters. In this study, seabed silt was tested as a potential raw material for artificial reefs. The silt was mixed with cement in four proportions to create concrete specimens for use in silt artificial reefs (SARs). The compressive strength development and nutrient dissolution were examined in the SAR specimens. The hydration products of the SAR paste were investigated through X-ray diffraction (XRD), scanning election microscope (SEM), and differential scanning calorimetry (DSC) techniques. The results showed that the compression strength of the SAR specimens was inversely proportional to their seabed silt content. The SAR specimens were able to continuously dissolve nitrogen-containing nutrients. The presence of Ca(OH)(2), commonly found in traditional concrete, was not detected, which may help improve the seaweed adhesion and biological effects of artificial reefs. The effective utilization of seabed silt could serve to restore and improve the marine ecological environment.
doi_str_mv 10.3390/app10207279
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Technology</subject><subject>seabed silt</subject><subject>Seawater</subject><subject>Seaweeds</subject><subject>Silt</subject><subject>Slaked lime</subject><subject>Technology</subject><subject>Testing</subject><subject>X-ray diffraction</subject><issn>2076-3417</issn><issn>2076-3417</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>AOWDO</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>DOA</sourceid><recordid>eNqNkU1r3DAQhk1poCHNqX_A0GPZRPJItnQ0Sz9CAi1JehZjaSbV4liu7KX031fJlm2OlUAzDM87jOatqndSXABYcYnzLEUjuqazr6rTkrQbULJ7_SJ_U50vy06UYyUYKU6r6_sfVPfzPEaPa0xTnbi-Ixwo1HdxXOs41WshvmWaMR-JPq-Ro4841v34UN5bIl7eVieM40Lnf-NZ9f3Tx_vtl83N189X2_5m45WAdQOsgjdswIOkQIMkCjyEgBKZB6E02k6HIHHgoKBTwSJrajQHYtlphrPq6tA3JNy5OcdHzL9dwuieCyk_OCwD-pEcoS3rIGpZtUprMEZgA56tEoigbOn1_tBrzunnnpbV7dI-T2V812hQQkipoVAXB6r8lVycOK0ZfbmBHqNPE3Es9b4tK9ZSWVMEHw4Cn9OyZOLjmFK4J7fcC7f-0b9oSLz4SJOno6K4pU1rAPSTcbLQ5v_pbVyfXdum_bTCH0Zzp1c</recordid><startdate>20201001</startdate><enddate>20201001</enddate><creator>Jiang, Zhaoyang</creator><creator>Zhang, Jiating</creator><creator>Nie, Zhaoyi</creator><creator>Guo, Zhansheng</creator><creator>Zhu, Lixin</creator><creator>Cong, Wei</creator><creator>Chen, Yuan</creator><creator>Liang, Zhenlin</creator><general>Mdpi</general><general>MDPI AG</general><scope>AOWDO</scope><scope>BLEPL</scope><scope>DTL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>DOA</scope></search><sort><creationdate>20201001</creationdate><title>The Application of Seabed Silt in the Preparation of Artificial Algal Reefs</title><author>Jiang, Zhaoyang ; 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subjects Algae
Aquaculture
artificial algal reef
Artificial reefs
Biological effects
Calcium hydroxide
Calorimetry
Cement
Chemistry
Chemistry, Multidisciplinary
Coastal development
Coastal zone
Compression
Compressive strength
Concrete
Curing
Differential scanning calorimetry
dissolution of nutrients
Ecological restoration
Engineering
Engineering, Multidisciplinary
environmental restoration
Growth
Hydration
hydration products
Marine algae
Marine ecology
Marine environment
Materials
Materials Science
Materials Science, Multidisciplinary
Mechanical properties
Methods
Nutrients
Ocean floor
Phosphorus
Physical Sciences
Physics
Physics, Applied
Planning
Science & Technology
seabed silt
Seawater
Seaweeds
Silt
Slaked lime
Technology
Testing
X-ray diffraction
title The Application of Seabed Silt in the Preparation of Artificial Algal Reefs
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