Searched for: subject:"calcium%5C%2Bcarbonate"
(1 - 11 of 11)
document
van der Star, W.R.L. (author), Schenkeveld, F.M. (author), Klessens, T.M.A. (author), van Zwieten, G. (author), van Paassen, L.A. (author)
conference paper 2017
document
Kramer, O.J.I. (author), de Moel, P.J. (author), Baars, E.T. (author), van Vugt, W.H. (author), van der Hoek, J.P. (author)
Natural particles are frequently applied in drinking water treatment in up-flow fluidisation processes. Additionally, sedimentation processes are applied to clarify water and to concentrate solids. To estimate the terminal settling velocity of single solid particles in a liquid system, a comprehensive collection of equations is available. For...
conference paper 2017
document
Kramer, O.J.I. (author), de Moel, P.J. (author), Baars, E.T. (author), van Vugt, W.H. (author), van der Hoek, J.P. (author)
The literature provides a comprehensive collection of equations to estimate the<br/>terminal settling velocity of single solid particles in a liquid system. The settling velocity for perfectly round spheres can accurately be calculated. In the contrary for natural imperfect particles the experimentally measured settling velocity deviates...
conference paper 2017
document
Pham, P.V. (author), Nakano, A. (author), van der Star, WRL (author), Heimovaara, T.J. (author), van Paassen, L.A. (author)
The process of microbially induced carbonate precipitation (MICP) by denitrification was investigated in relation to its potential use as a ground improvement method. Liquid batch experiments indicated that the substrate solution had an optimum carbon–nitrogen ratio of 1·6 and confirmed that combining nitrate reduction and calcium carbonate...
journal article 2016
document
Hofs, B (author), Baars, ET (author), Palmen, LJ (author), Elings, JA (author), Kors, L.J. (author), Kramer, O.J.I. (author), Koppers, H (author), van der Hoek, J.P. (author)
About 50% of the drinking water in the Netherlands is centrally softened by the drinking water companies in a process known as pellet softening. In this process a base and seeding material are mixed in an upflow reactor, where subsequently CaCO3 precipitates on a seed core as pellets. The seeding material is usually sand, but recently CaCO3 was...
conference paper 2015
document
Yamada, M. (author), Nishiwaki, T. (author), Kawakami, S. (author), Mihashi, H. (author), Kikuta, T. (author)
Abstract only.
conference paper 2013
document
Nishiwaki, T. (author), Yamada, M. (author), Kikuta, T. (author), Kwon, S. (author), Mihashi, H. (author)
Fiber reinforced cementitious composite (FRCC) has a great capability for selfhealing of cracks. Concrete cracks with a sufficiently small crack width (below 0.1 mm) can be closed and self-healed by crystallization of calcium carbonate in the presence of moisture, even in the case of ordinary concrete. Such precipitation is caused by reaction of...
conference paper 2013
document
Wagterveld, R.M. (author)
Scaling comprises the formation of hard mineral deposits on process or membrane equipment and calcium carbonate is the most common scaling salt. Especially in reverse osmosis (RO) membrane systems, scale formation has always been a serious limitation, causing flux decline, membrane degradation, loss of production and elevated operating costs. In...
doctoral thesis 2013
document
Sisomphon, K. (author), Copuroglu, O. (author), Koenders, E.A.B. (author)
conference paper 2011
document
Jonkers, H.M. (author)
A typical durability-related phenomenon in many concrete constructions is crack formation. While larger cracks hamper structural integrity, also smaller sub-millimeter sized cracks may result in durability problems as particularly connected cracks increase matrix permeability. Ingress water and chemicals can cause premature matrix degradation...
journal article 2011
document
Verdoes, D. (author)
doctoral thesis 1991
Searched for: subject:"calcium%5C%2Bcarbonate"
(1 - 11 of 11)