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Jie Chen, Hui Qian and Peiyue Li
The mixing precipitation of CaCO3 in natural waters was theoretically studied by the methods of chemical equilibrium calculation. Results show that mixing precipitation of CaCO3 can be produced by mixing between two unsaturated water samples with respect...
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Amri Adnan,Muhammad Irham,Muhammad Rusdi
Pág. 96 - 113
Most of the coastal zones of Aceh Besar are areas of accumulation of organic compounds such as C-Organic and CaCO3. Therefore, studying the distribution of organic carbon and carbonates in sediments in coastal areas is necessary. This study aims to analy...
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Yafeng Gong, Jiaxiang Song, Haipeng Bi and Zhenhong Tian
This research optimizes the mix ratio of nano-TiO2/CaCO3 (NTC)-basalt fiber (BF) composite modified asphalt mixture. Based on the Box?Behnken method and the response surface method, a three-factor and three-level test was designed. The input indicators w...
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Chi Wan Jeon, Sangwon Park, Jun-Hwan Bang, Soochun Chae, Kyungsun Song and Seung-Woo Lee
CaCO3 is often used as an additive in many industries. However, additional functions are required to expand its applicability. This entails modification of its physicochemical properties. Accordingly, in this study, a particle surface modification treatm...
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Kristoff Svensson, Andreas Neumann, Flora Feitosa Menezes, Christof Lempp and Herbert Pöllmann
The reaction of wollastonite (CaSiO3) with CO2 in the presence of aqueous solutions (H2O) and varied temperature conditions (296 K, 323 K, and 333 K) was investigated. The educts (CaSiO3) and the products (CaCO3 and SiO2) were analyzed by scanning electr...
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Davi de Holanda Cavalcante, Suzete Roberta da Silva, Paloma Damasceno Pinheiro, Michael Masaki Freitas Akao, Marcelo Vinícius do Carmo e Sá
Pág. 177 - 183
The present work aimed at evaluating the effects of single or paired increase of water?s total alkalinity (TA) and total hardness (TH) on the performance of Nile tilapia juveniles? growth and culture water quality. Twenty five 25-L outdoor polyethylene a...
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Miltiadis Iatrou, Miltiadis Tziouvalekas, Alexandros Tsitouras, Elefterios Evangelou, Christos Noulas, Dimitrios Vlachostergios, Vassilis Aschonitis, George Arampatzis, Irene Metaxa, Christos Karydas and Panagiotis Tziachris
Storm ?Daniel? caused the most severe flood phenomenon that Greece has ever experienced, with thousands of hectares of farmland submerged for days. This led to sediment deposition in the inundated areas, which significantly altered the chemical propertie...
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Xin Huang, Weijing Yao and Jianyong Pang
In this paper, the carbonation depths of glazed hollow bead insulation concrete (GHBC) and normal concrete (NC) at different carbonation ages are tested. The microstructure of GHBC and NC before and after carbonation were observed and compared by mercury...
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Luis Diego Méndez-Mejías,Róger Moya,Mariajosé Esquivel-Fuentes,Estephanía Salazar-Zeledón
Pág. 5 - 15
A composite between particles obtained residual pallets of Pinus sp and cement was manufactured. Also, three methods were performance for wood particles: hot water washed, unwashed and unwashed with calcium carbonate (CaCO3). Different concrete-wood part...
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Songtao Lv, Shuangshuang Wang, Tong Guo, Chengdong Xia, Jianglong Li and Gui Hou
As a natural modifier of asphalt, rock asphalt has been widely used to improve its thermal stability and aging resistance. However, the thermal cracking resistance of asphalt modified by rock asphalt is unsatisfactory. In order to improve the thermal cra...
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Yuchun Li, Tianlai Fan, Aihua Wang, Jun Zeng, Yubiao Lv, Mingwang Zhang and Dajun Liu
The geochemical characteristics of a 2.1 m BBW25 core, collected from the Beibu Gulf, have been investigated in terms of the major and trace elements, organic matter, and CaCO3 and AMS 14C dating by XRF, ICP-OES, ICP-MS, and more. We have found through p...
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Ruoan Wang, Jun Ren, Hanru Ren, Ling Tao, Chaohui Wu, Xinni Sun and Mairong Lv
Three types of modified sludge biochar were produced for the adsorption of copper in aqueous solutions via the calcium-based magnetic (CaCO3, Fen+) treatment (CA?BC), nanozero-valent iron (nZVI) treatment (nZVI?BC), and iron (Fe3+) treatment (FA?BC) of r...
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Jabbar K Kassim
Pág. 9 - 19
Attempts have been made to evaluate four methods of quantitative determination of soil carbonates. Calcium carbonates equivalent were determined by the acid neutralization, calcimeter and acetic acid methods. Also, it obtains by the fourth methods when t...
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Verónica Viviana Acosta and Gustavo Luis Bianchi
The corrosion rate of carbon steel under the attack of electrolytic mediums saturated by CO2 at a working temperature of 65 °C under dynamic conditions is studied in this paper. The effect of Ca2+ ions on corrosion rates and their dependency on the assoc...
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Giovanni De Falco, Simone Simeone, Alessandro Conforti, Walter Brambilla and Emanuela Molinaroli
The compatibility of sediments in terms of grain size, composition and colour among beaches and strategic sediment deposits (SSD) along Western Sardinia (Western Mediterranean Sea) were assessed to explore management strategy in the protection and adapta...
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Tatiane Ohland,Maria do Carmo Lana,Jucenei Fernando Frandoloso
Pág. 1333 - 1342
Este trabalho teve por objetivo avaliar se diferentes doses de calcário, aplicadas em subsuperfície, influenciam a absorção de nutrientes em plantas de pinhão-manso (Jatropha curcas L.) em desenvolvimento inicial. O experimento foi realizado em vasos e s...
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Saeid Hazrati, Giuseppe Pignata, Manuela Casale, Seyyed Jaber Hosseini and Silvana Nicola
The optimal fertilizer concentration for Mentha plants is contingent on the growing systems and harvest time, serving as operational solutions to control and enhance quality and yield. This study aimed to determine the effects of three macronutrients con...
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Katherine A. Muller and C. Andrew Ramsburg
Among the most common amendments added to groundwater during site remediation are compounds used to adjust or maintain the pH. This research describes an approach to encapsulate mineral particles (MgO and CaCO3) within oil droplets suspended within an aq...
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Nadya Buga and Marko Petek
In Europe, the intensity and frequency of flooding events are expected to increase due to climate change, adding additional challenges to agricultural production and creating the need for new plant products and adaptation tools. Cabbage is one economical...
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Zilin Wei, Tianfu Xu, Songhua Shang, Hailong Tian, Yuqing Cao, Jiamei Wang, Zhenya Shi and Xiao Liu
Authigenic carbonates are widely distributed in marine sediments, microbes, and anaerobic oxidation of methane (AOM) play a key role in their formation. The authigenic carbonates in marine sediments have been affected by weathering and diagenesis for a l...
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