Results 31 to 40 of about 157 (128)
Journal of Taibah University for Science, 2018 The use of natural fillers in plastics to substitute conventional synthetic fibres is effective and economical. Eco-friendly bio-composites polypropylene matrix composites reinforced with blended carbonized Terminalia catappa (almond) shell particles and
Stephen Durowaye +3 more
doaj +1 more source
Biological Reviews, Volume 95, Issue 6, Page 1812-1837, December 2020., 2020 ABSTRACT Most molluscs possess shells, constructed from a vast array of microstructures and architectures. The fully formed shell is composed of calcite or aragonite. These CaCO3 crystals form complex biocomposites with proteins, which although typically less than 5% of total shell mass, play significant roles in determining shell microstructure ...
Melody S. Clark +29 more
wiley +1 more source
Water Treatment for Fish Aquaculture System by Biochar‐Supplemented Planting Panel System
The Scientific World Journal, Volume 2020, Issue 1, 2020., 2020 Rice husk biochars were prepared by carbonization at 400–600°C. The products were analyzed by FTIR, SEM‐EDS, BET, and approximate analysis in order to find final products with the best properties and the lowest carbonization temperature. It has been found that the biochar prepared at 500°C, which has 37.86 ± 0.11% yield, 341.0776 m2/g of BET surface ...
Sumrit Mopoung +5 more
wiley +1 more source
Behaviour of periwinkle shell ash blended cement concrete in sulphuric acid environment
Nigerian Journal of Technology, 2018 This paper presents the influence of sulphuric acid on compressive strength of concrete made with cement blended with periwinkle shell ash (PSA). The cement component was replaced with PSA at 0 %, 5 %, 10 %, 15 % and 20 %. Concrete mix ratio of 1:2:4 and a constant water cement ratio of 0.6 was used. A total of 180 cube specimens (150mm x 150mm x 150mm)
Attah, I.C., Etim, R.K., Ekpo, D.U.
openaire +3 more sources
POTENTIAL APPLICATION OF A LOCALLY SOURCED PHOTOCATALYST FOR THE PHOTOCATALYTIC DECOLOURISATION OF METHYL ORANGE IN AQUEOUS SOLUTION [PDF]
Journal of Engineering Science and Technology, 2015 Periwinkle shell ash (PSA) was investigated for its photocatalytic properties in decolourising methyl orange in aqueous solution. The effects of irradiation time, initial dye concentration and PSA dosage on the decolourisation process were investigated ...
F. A. AISIEN +2 more
doaj
International Journal of Advances in Scientific Research and Engineering, 2021 The globe yearns for sustainability in meeting the present and future needs of man. Hence, research into a more sustainable modes of harvesting, processing and use of nature’s raw resources is evidently timely. Cement replacement is opined on the need to reduce the environmental as well as economical limitations associated with its production, while ...
Mac-Eteli, Happiness Davies +1 more
openaire +3 more sources
Journal of GeoEnergy, Volume 2025, Issue 1, 2025.The formulation of drilling fluids with the desired characteristics required to achieve a successful drilling operation depends largely on the drilling additives. In this study, we investigated the potential of two agrowastes, wheat husks (WHs) and periwinkle shells (PSs) as additives in water‐based drilling fluids (WBFs).
Hussein Omeiza Aliu +3 more
wiley +1 more source
PREDICTION OF COMPRESSIVE STRENGTH OF CEMENT BLENDED FLY ASH-PERIWINKLE SHELL ASH SANDCRETE BLOCKS
, 2017 This study centred on the development of a mathematical model for the prediction of the compressive strength of cement blended Fly Ash-Periwinkle shell ash sandcrete blocks using Scheffe’s simplex lattice. A total of ninety (90) fly ash-PSA solid sandcrete blocks of dimensions 450 x 125 x 225 mm were cast, consisting of three (3) blocks per mix ratio ...
Nwagwu, Chimaobi Onyedikachi +1 more
openaire +1 more source
Engineering Reports, Volume 6, Issue 12, December 2024.Characterization, tribological analysis, and multi‐objective optimization of aluminum‐fly ash‐egg shell hybrid sustainable composites. Abstract This study addresses the technological challenge of enhancing the mechanical and tribological properties of Al 6082 alloy by incorporating fly ash (FA) and eggshell (ES) as reinforcing materials.
J. Narendran +4 more
wiley +1 more source
Ecology and Evolution, Volume 14, Issue 10, October 2024.We sequenced the cytochrome oxidase 1 (CO1) gene in small giant clams (Tridacna maxima) in Australia's Coral Sea Marine Park and Cook Islands to assess the genetic diversity and connectivity of these populations. Both regions had very high haplotype diversities but differed in their population structures, with no structure detected within the Coral Sea
Ryan J. Nevatte +9 more
wiley +1 more source