Concrete Behaviour with Volcanic Tuff Inclusion

The purpose of this article is to study the activation of the Mir�id volcanic tuff with NaOH solutions at various concentrations. To be more specific, the work investigated the evolution of the concentrations of species that passed from the tuff into the activating solutions and the quantities of dissolved species from 100 g tuff. The species found in the activating solution were: potassium, magnesium, aluminium and silicon. The shape of the curves - a sudden increase followed by a plateau or a second stage of slower increase - allowed for setting up the optimal activation time at a half-hour. Another finding was the optimal concentration of 1 N for the activating solution. X-ray diffractograms showed the increase of clinoptilolite content in the tuff, thus improving the adsorbent as well as ion exchange properties by activation with NaOH solutions.

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Feasibility exploration on the geopolymerization activation of volcanic tuff, parametrical optimization, and reaction mechanisms

Journal of Materials Research and Technology ◽

10.1016/j.jmrt.2021.01.029 ◽

2021 ◽

Vol 11 ◽

pp. 618-632

Author(s):

Dongping Song ◽

Tao Huang ◽

Qing Fang ◽

Ao Liu ◽

Yi-Fan Gu ◽

...

Keyword(s):

Reaction Mechanisms ◽

Volcanic Tuff ◽

Parametrical Optimization

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Determination of Some Physical-Mechanical Properties of Volcanic Tuff Using Non-Destructive Method

Emerging Materials Research ◽

10.1680/jemmr.21.00056 ◽

2022 ◽

Vol 11 (1) ◽

pp. 1-9

Author(s):

Ömer Can

Keyword(s):

Mechanical Properties ◽

Volcanic Tuff ◽

Non Destructive

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Reservoir characteristics in the Cretaceous volcanic rocks of Songliao Basin, China: A case of dynamics and evolution of the volcano-porosity and diagenesis

Energy Exploration & Exploitation ◽

10.1177/0144598718812546 ◽

2018 ◽

Vol 37 (2) ◽

pp. 607-625 ◽

Cited By ~ 3

Author(s):

Haitao Sun ◽

Dakang Zhong ◽

Weijia Zhan

Keyword(s):

Volcanic Rocks ◽

Songliao Basin ◽

Pyroclastic Rock ◽

Rock Composition ◽

Volcanic Tuff ◽

Volcanic Breccia ◽

Pore Evolution ◽

Diagenetic Evolution ◽

Pore Types ◽

Volcanic Reservoirs

To explain the strong spatial heterogeneity of volcanic reservoirs porosity in the Songliao Basin and provide new ideas for predicting good volcanic reservoirs in other similar basins, the relationship between the pore evolution process and lithology of volcanic reservoirs has been described in this article. With the description and interpretation of core, thin section, scanning electron microscope, and the results of mercury injection experiment, this article clarifies the lithology, pore types, and pore structure features of the volcanic reservoirs in the Songliao Basin. The rocks of volcanic reservoirs in study area contain pyroclastic rock and volcanic lavas. The most common lithologies are rhyolite, volcanic breccia, and volcanic tuff. The pore size, morphology, and structure vary greatly between these three lithologies, the reason of which we think is the different volcanic eruption process as well as rock composition and its structure. The digenetic evolution of rhyolite includes gas dissipation of magmatic condensation; vesicles fulfilling by hydrothermal fluid; kaolinization and sericitization of feldspar phenocrysts; carbonation, devitrification, and recrystallization of felsic matrix; and finally, the dissolution of feldspar phenocrysts and felsic matrix. As for volcanic breccia, it usually go through the compaction, quartz and calcite filling the original pores between volcanic breccias, and dissolution of mineral debris together with tuff matrix. Similar with the rhyolite, volcanic tuff also undergoes the carbonation and kaolinization of felsic matrix, the dissolution of feldspar and felsic matrix, and compaction. Due to these comprehensive processes, a comprehensive analysis of volcanic rock lithology, which can indicate lithology distribution vertically and horizontally, is very necessary during volcanic reservoirs evaluation and prediction. These detailed analyses will help explorers to find potential reservoirs by distinguishing the diagenetic evolution and pore characteristic of volcanic reservoirs.

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Inmobilización y retención nutrimental en aserrín de pino como sustrato agrícola.

REVISTA TERRA LATINOAMERICANA ◽

10.28940/terra.v37i3.448 ◽

2019 ◽

Vol 37 (3) ◽

pp. 261

Author(s):

Joel Pineda Pineda ◽

Felipe Sánchez del Castillo ◽

Esaú Del Carmen Moreno Pérez ◽

Luis Alonso Valdez Aguilar ◽

Ana María Castillo González ◽

...

Keyword(s):

Nutrient Solution ◽

Solution Concentration ◽

Particle Sizes ◽

Similar Concentration ◽

Volcanic Tuff ◽

Pine Sawdust ◽

Low Concentrations ◽

Growing Medium ◽

Leachate Water ◽

Main Substrate

Pine (Pinus sp.) sawdust has been used as a growing medium for the cultivation of vegetables and ornamentals. In the present work the objective was to assess the immobilization or retention of N, P, K, and Ca in pine sawdust as the main substrate component by applying Steiner nutrient solution at different concentrations (20, 30 and 40 meq L-1). We used uncomposted sawdust, alone or in mixtures (70/30, v/v) with volcanic tuff of different particle sizes (fine ≤ 3 mm, medium 3-6 mm, and coarse 6-12 mm). For two months, leachate was collected daily, and every 10 days, the average concentrations of N, P, K, and Ca, as well as pH and electrical conductivity (EC) were measured. The effect of the interaction substrate × nutrient solution concentration on N, P, K and Ca in the leached water was observed. These nutrients increased in concentration in the leachate water in accord with the nutrient solution concentration and as the diameter of volcanic tuff particles diminished. Irrigation with 20 meq L-1 (2 dS m-1) concentration of nutrient solution reduced the concentration of N, P, K, and Ca in leached water below its concentration in the supplied nutrient solution, while irrigation with 30 or 40 meq L-1 (2 or 4 dS m-1) resulted in similar concentration in leached water up to 20 or 30 dat, but at 40 dat, concentration of these nutrients in the leached water was higher. Immobilization of N and P, K, and Ca retention in the sawdust substrate occurred during the first 40 ddt, related to an increase in pH (up to 8.6), a decrease in EC (until 0.5 dS m-1) and low concentrations of N, P, K, and Ca in the leached water.

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Geohydrology of volcanic tuff penetrated by test well UE-25b#1, Yucca Mountain, Nye County, Nevada

10.3133/wri844253 ◽

1984 ◽

Keyword(s):

Yucca Mountain ◽

Volcanic Tuff ◽

Nye County

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INDONESIAN NANOCLAYS FOR THE REMOVAL OF NITRATE IN LIQUID WASTE CONTAINING PALM OIL MILL EFFLUENT

JURNAL AGROTEKNOLOGI ◽

10.19184/j-agt.v13i02.15327 ◽

2020 ◽

Vol 13 (02) ◽

pp. 164

Author(s):

Untung Sudadi ◽

Syaiful Anwar ◽

Rendy Anggriawan ◽

Tengku Afrizal

Keyword(s):

Palm Oil ◽

Liquid Waste ◽

Land Application ◽

Palm Oil Mill Effluent ◽

Isothermal Adsorption ◽

Volcanic Tuff ◽

Natural Adsorbent ◽

Nitrate Adsorption ◽

Palm Oil Mill ◽

Potential Use

Land application of liquid waste containing palm oil mill effluent (LW-POME) as soil ameliorant can cause water contamination due to its high content of nitrate if improperly treated. Indonesia is rich with volcanic tuff materials that contain variable charged soil clay minerals. This study was aimed at to extract nanoclays (fraction sized <200 nm) from volcanic tuffs of Mt. Salak, West Java, Indonesia, and evaluate their potential use as adsorbent of nitrate in LW-POME. By applying dispersion, ultrasonication, centrifugation, and dialysis separation techniques, it could be extracted positively charged nanoclays nc3 and nc4 from the respectively tuff materials tv3 and tv4. Their potential use as natural adsorbent of nitrate as anionic contaminant was evaluated using Langmuir isothermal adsorption model. After 48 h equilibration, it could be extracted 4.33 mg nc3/g tv3 and 7.73 mg nc4/g tv4 with nitrate adsorption maxima of 48.3 and 40 mg/g for nc3 and nc4, respectively. The removal of nitrate in the LW-POME from 62 to 20 mg/L as to comply with the Indonesian liquid waste quality standard required 29.81 mg nc3/L or 39.34 mg nc4/L. The extracted nanoclays were considered prospective to be utilized as natural adsorbent for nitrate removal in LW-POME. Keywords: anionic contaminant, natural adsorbent, nitrate adsorption, volcanic tuff

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