Hydrogen production for energy: An overview

Hydrogen production reactions from carbon feedstocks: fossil fuels and biomass.

Keywords: Mecanique des sols ; Drainage ; Ecoulement souterrain Reference Record created on 2004-09-07, modified on 2016-08-08

Applications of soil physics.

[1] We explore and review the value of soil moisture measurements in vadose zone hydrology with a focus on the field and catchment scales This review is motivated by the increasing ability to measure soil moisture with unprecedented spatial and temporal resolution across scales We highlight and review the state of the art in using soil moisture measurements for (1) estimation of soil hydraulic properties, (2) quantification of water and energy fluxes, and (3) retrieval of spatial and temporal dynamics of soil moisture profiles We argue for the urgent need to have access to field monitoring sites and databases that include detailed information about variability of hydrological fluxes and parameters, including their upscaled values In addition, improved data assimilation methods are needed that fully exploit the information contained in soil moisture data The development of novel upscaling methods for predicting effective moisture fluxes and disaggregation schemes toward integrating large-scale soil moisture measurements in hydrological models will increase the value of soil moisture measurements Finally, we recognize a need to develop strategies that combine hydrogeophysical measurement techniques with remote sensing methods

/pdf/on-the-value-of-soil-moisture-measurements-in-vadose-zone-21mx8q831k.pdf

On the value of soil moisture measurements in vadose zone hydrology: a review

Grapevine under deficit irrigation: hints from physiological and molecular data.

An analysis of the performance of membrane reactors for the water–gas shift reaction using gas feed mixtures

Nitrate leaching under maize cropping systems in Po Valley (Italy)

[1] This study is mainly aimed at assessing the adequacy of laboratory-based soil hydraulic characterization carried out on undisturbed cores for reproducing the in situ soil hydraulic behavior. Assuming that the laboratory sample size is a representative elementary volume (REV) for a single horizon of the soil profiles examined, the analysis of the hysteretic features of the soil water retention function is used to explain the differences observed in the constitutive soil water relationships as obtained from either laboratory or in situ experiments. Because the wetting procedures differ in laboratory and in field experiments, it is argued that the difference in the obtained hydraulic characteristics is the result of different hysteretic paths. From the comparison of measured hydraulic conductivities we deduce that field and laboratory retention curves are a part of the same hysteresis loop. In such a context the field hydraulic functions can be derived from the laboratory functions using the maximum water content (i.e., at zero pressure head) and air entry value measured in the field. It is shown that the field parameters identified from the measurements in the early phases of the field test are sufficient to reliably describe field hydrological behavior.

https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2003WR002432

Hysteresis in soil water characteristics as a key to interpreting comparisons of laboratory and field measured hydraulic properties

Membrane reactor for water gas shift reaction

A membrane reactor is a device for simultaneously performing a reaction and a membrane-based separation in the same physical device. Therefore, the membrane not only plays the role of a separator, but also takes place in the reaction itself. This text covers, in detail, the preparation and characterisation of all types of membranes used in membranes reactors. Each membrane synthesis process used by membranologists is explained by well known scientists in their specific research field. The book opens with an exhaustive review and introduction to membrane reactors, introducing the recent advances in this field. The following chapters concern the preparation of both organic and inorganic, and in both cases, a deep analysis of all the techniques used to prepare membrane are presented and discussed. A brief historical introduction for each technique is also included, followed by a complete description of the technique as well as the main results presented in the international specialized literature. In order to give to the reader a summary look to the overall work, a conclusive chapter is included for collecting all the information presented in the previous chapters.

/pdf/membranes-for-membrane-reactors-preparation-optimization-and-47704uast8.pdf

Angelo Basile

Papers

An analysis of the performance of membrane reactors for the water–gas shift reaction using gas feed mixtures

Nitrate leaching under maize cropping systems in Po Valley (Italy)

Hysteresis in soil water characteristics as a key to interpreting comparisons of laboratory and field measured hydraulic properties

Membrane reactor for water gas shift reaction

Membranes for Membrane Reactors: Preparation, Optimization and Selection