walnut shell Articles
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Synthesis of walnut shell modified with titanium dioxide and zinc oxide nanoparticles for efficient removal of humic acid from aqueous solutions
The main aim of this research was to study the efficiency of modified walnut shell with titanium dioxide (TiO2) and zinc oxide (ZnO) in the adsorption of humic acid from aqueous solutions. This experimental study was carried out in a batch condition to determine the effects of factors such as contact time, pH, humic acid concentration, dose of adsorbents (raw walnut shell, modified walnut ...
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Kinetics of the low-temperature pyrolysis of walnut shell
The walnut shell with particle size less than 0.154 mm pyrolysis mass loss behaviour was studied at different heating rates (5, 10, 20, 30, 40?C/min) using pyris1 thermogravimetric analysis (TGA) instrument. Results showed that the activation energies of walnut shell pyrolysis under the different fractions decomposed were centred on 134?172 kJ/mol by Ozawa method and Kissinger?Akahira?Sunose ...
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Ecodyne Limited Announces Exclusive Technology Agreement with Xedia Process Solutions for Enhanced Walnut Shell Filter Media
Ecodyne Ltd has signed a multi-year exclusive agreement with Xedia to use its XDN modified nutshell media. The agreement covers water treatment applications in Canadian and Chinese Upstream Oil and Gas market sectors as well as the North American Refining and Petrochemical sectors. The price outlook of oil has led exploration and production companies to look for innovative ways to reduce ...
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Using a Walnut Shell Filter as an RO Protection Filter
The purity of boiler feed water can be a critical part of the manufacturing process. This water needs to be free from contaminants in order for the boiler to operate correctly, without frequent shutdown for maintenance. For this reason, a membrane filtration train is frequently used. Unfortunately, the exposure of plant water to the manufacturing process means that the feed water can be ...
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Removal of Pb(II) by adsorption onto Chinese walnut shell activated carbon
The excessive discharge of Pb(II) into the environment has increasingly aroused great concern. Adsorption is considered as the most effective method for heavy metal removal. Chinese walnut shell activated carbon (CWSAC) was used as an adsorbent for the removal of Pb(II) from aqueous solution. Batch experiments were conducted by varying contact time, temperature, pH, adsorbent dose and initial ...
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The importance of surface functional groups in the adsorption of copper onto walnut shell derived activated carbon
In this study, activated carbon (AC) was prepared from walnut shell using chemical activation. The surface chemistry of the prepared AC was modified by introducing or blocking certain functional groups, and the role of the different functional groups involved in the copper uptake was investigated. The structural and chemical heterogeneity of the produced carbons are characterized by Fourier ...
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