Microbial-induced calcite precipitation (MICP) is a natural process that offered various applications in the engineering field materials and construction industry. It has recently emerged as an innovative, eco-friendly, economically engineeredprocess. One of successful MICP methods improving properties soils ureolysis. The ureolysis drove precipitate which binds soil particles within matrix thu...

Yersinia enterocolitica produces the enzyme urease which hydrolyses urea, resulting in the production of carbonic acid and ammonia and a net increase in pH. In the presence of urea, urease enhances survival of Y. enterocolitica in the stomach and presumably in other acidic environments the bacteria encounter during the course of infection. In this study we show that Y. enterocolitica urease is ...

Abstract Microbially induced calcite precipitation (MICP) technique utilizes ureolytic bacteria to decompose urea and generate carbonate ions for metal combination. MICP can remediate heavy (e.g., Cd) contaminated soils while maintaining or even improving soil functions, but its efficiency in agricultural practical application still needs be enhanced. Here, we constructed a biochar-bacteria (2B...

Abstract Background Reinforcement corrosion and the concrete strength reduction are critical problems that resulted from crack creation in concrete. Very expensive hazardous technologies based on chemical materials have been provided for repairing cracks. Recently, repair using bio-catalysis precipitating bacteria has developed as a viable ecofriendly alternative technique. The main target of t...

The increasing awareness of climate change and global warming has pushed industries to be more conscious their environmental impact, especially in the construction industry with main contributor being concrete. Concrete is a material that very high demand for structural applications. However, it’s major concern challenges microcracking. New technology seen development self-healing material, usi...

A growth medium and test were developed for rapid detection of urease in fermentative anaerobic bacteria. Using nonselective rumen fluid roll-tube agar medium and the new test, it was confirmed that Peptostreptococcus productus is often the most numerous urease-forming species in human feces. Also, some fecal strains of Ruminococcus albus, Clostridium innocuum, and Clostridium beijerinckii prod...

At present several studies are evaluating biological calcite precipitation as it has laid the concept of bioconcrete as a self-healing material which may be a green and more sustainable component for future architecture. This paper reports a 96 wells plate based rapid and easy method for the screening of urea hydrolyzing/calcite-precipitating bacteria. Arsenazo III was used as a colorimetric in...