Results 41 to 50 of about 5,041 (159)

Evaluating the Effect of ¹⁸O Incorporation on the Vibrational Spectra of Vaterite and Calcite

Crystals, 2022
Calcium carbonates are critical in biomineralization processes and as functional materials. For many applications, isotope enrichment in these materials allows researchers to monitor reaction pathways and retrace environmental signatures.
Helen E. King, Aleksandar Živković, Nora H. de Leeuw   +2 more
doaj   +1 more source

Optimizing feather hydrolysate via machine learning for microbial recycling of waste concrete fines

Journal of Chemical Technology &Biotechnology, EarlyView.
Abstract BACKGROUND The concrete industry faces significant challenges from CO2 emissions and the disposal of waste concrete fines (WCF). Microbially induced calcite precipitation (MICP) can bind WCF into bioconcrete, but the high cost of commercial culture media hinders its application.
Henrietta Ottová, Barbora Malíková, Václav Nežerka, Petr Holeček, Dana Koňáková, Hana Stiborová   +5 more
wiley   +1 more source

Colloidal Behavior of Carbonate Particles Microbially Precipitated in Microfluidic Droplets

Small, EarlyView.
In Microbially Induced Calcium Carbonate Precipitation (MICP), ureolytic bacteria trigger calcium carbonate precipitation via pH‐increasing urea hydrolysis. This enzymatically driven reaction induces the colloidal assembly of bacteria and carbonate particles into fractal networks.
Nadia Enrriquez Casimiro, Muja Emilie Ye, Carla Fernández‐Rico, Siiri Bienz, Naresh Kumar, André R. Studart   +5 more
wiley   +1 more source

Remineralisation of Reverse Osmosis (RO) Water Using Synthetic Aragonite

Water and Environment Journal, EarlyView.
ABSTRACT Reverse osmosis (RO) treated water often requires remineralisation to restore Ca2+ ions, hardness and alkalinity, particularly for potable water. This study compares the dissolution characteristics of two forms of calcium carbonate, aragonite and calcite.
Yuqing Wu, Marcus Yio, Ian Cranshaw, Christopher Cheeseman   +3 more
wiley   +1 more source

Particle Analysis and Mechanical–Thermal Properties of Bio‐Derived and Commercial CaCO3 Reinforced Laboratory‐Reprocessed Polypropylene Composites

SPE Polymers, Volume 7, Issue 4, October 2026.
Bio‐derived and commercial CaCO3 reinforced laboratory‐reprocessed polypropylene composites were fabricated and characterized, demonstrating improved stiffness and thermal stability while maintaining acceptable processability. ABSTRACT This study investigates laboratory‐reprocessed polypropylene (rPP)‐based composites reinforced with calcium carbonate (
Eba Mala Maldaye, Isiaka Oluwole Oladele, Benjamin Omotayo Adewuyi, Paul Albrecht, Volker Schöppner   +4 more
wiley   +1 more source

Mineral Deposition From Liquid Precursors Triggered by Complementary Polyelectrolytes

Advanced Functional Materials, Volume 36, Issue 72, 7 September 2026.
Polyelectrolyte additives can delay or prevent crystal nucleation in supersaturated solutions of insoluble mineral salts such as calcium carbonate. This work reports that adding a second, oppositely‐charged polyelectrolyte leads to immediate mineral crystallization from such metastable solutions.
Mohammed Kayes Patoary, Eli Halperin Pierce, Elizabeth Siu, Brigitte Gallagher, Md Abul Shahid, Yang Zhang, Thomas B. H. Schroeder   +6 more
wiley   +1 more source

The Multiple Structures of Vaterite

, 2016
For many years the nature of the disordered structure of vaterite, a calcium carbonate polymorph that plays a significant role in biomineralisation, has been debated. In the past year, two independent studies (Angew. Chem., Int.
Julian D. Gale (1952122), Roberto Dovesi (1717675), Paolo Raiteri (1498624), Raffaella Demichelis (1498630)   +3 more
core   +1 more source

Exploiting Benefits of Vaterite Metastability to Design Degradable Systems for Biomedical Applications

Pharmaceutics, 2023
The widespread application of calcium carbonate is determined by its high availability in nature and simplicity of synthesis in laboratory conditions.
Yulia Svenskaya, Tatiana Pallaeva
doaj   +1 more source

Bacteria‐Responsive Nanostructured Drug Delivery Systems for Targeted Antimicrobial Therapy

Advanced Materials, Volume 38, Issue 51, 11 September 2026.
Bacteria‐responsive nanocarriers are designed to release antimicrobials only in the presence of infection‐specific cues. This selective activation ensures drug release precisely at the site of infection, avoiding premature or indiscriminate release, and enhancing efficacy.
Guillermo Landa, Gracia Mendoza, Silvia Irusta, Manuel Arruebo   +3 more
wiley   +1 more source

Confinement stabilises single crystal vaterite rods. [PDF]

, 2014
Single-crystals of vaterite, the least-stable anhydrous polymorph of CaCO3, are rare in biogenic and synthetic systems. We here describe the synthesis of high aspect ratio single crystal vaterite rods under additive-free conditions by precipitating CaCO3
Albarracin, EJ, Meldrum, FC, Schenk, AS, Kim, YY, Ihli, J   +4 more
core   +1 more source