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Athanasios K. Sfikas and Angeliki G. Lekatou
Al?Co alloys of various Co contents (2?20 wt.% Co) were fabricated by vacuum arc melting (VAM) with the scope to investigate the influence of cobalt on the microstructure and corrosion resistance of Al in 1 M H2SO4. The obtained microstructures were dire...
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Azhar Equbal and Anoop Kumar Sood
Metallization of ABS (acrylonitrile-butadiene-styrene) parts has been studied on flat part surfaces. These parts are fabricated on an FDM (fused deposition modeling machine) using the layer-wise deposition principle using ABS as a part material. Electrol...
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David Brus, Lenka ?krabalová, Erik Herrmann, Tinja Olenius, Tereza Trávnicková, Ulla Makkonen and Joonas Merikanto
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Affonso Celso Gonçalves Junior, Daniel Schwantes, Elio Conradi Junior, Juliano Zimmermann, Gustavo Ferreira Coelho
Pág. e50263
This study evaluated the use of Euterpe oleracea endocarp after chemical modification with H2O2, H2SO4 and NaOH for the removal of Cd2+, Pb2+ and Cr3+ from water. Therefore, the adsorbent was characterized for its chemical composition, Fourier Transform ...
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Affonso Celso Gonçalves Junior, Daniel Schwantes, Elio Conradi Junior, Juliano Zimmermann, Gustavo Ferreira Coelho (Author)
Pág. e50263
This study evaluated the use of Euterpe oleracea endocarp after chemical modification with H2O2, H2SO4 and NaOH for the removal of Cd2+, Pb2+ and Cr3+ from water. Therefore, the adsorbent was characterized for its chemical composition, Fourier Transform ...
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Silvia Izquierdo, Erich David Rodríguez, Ruby Mejía de Gutiérrez
Pág. Page 169 - 176
Spent fluid catalytic cracking (sFCC) catalyst is a residue that is produced in high volumes by the petrochemical industry and has shown a high potential to be used as a supplementary cementitious material (SCM). This article assesses the sFCC effectiven...
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Eko Hariyadi,Mohammad Jufri,Hasanuddin Hasanuddin
Pág. 49 - 54
To prevent corrosion in metal, especially carbon steel, always need efforts which considered expensive one. But, compared with costs and losts when the corrosion attack is not properly managed then the cost of efforts is much lower. The most popular meth...
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Araceli Aparecida Seolatto, Maurício Melo Câmara, Célia Regina Tavares, Eneida Sala Cossich, Edson Antonio da Silva
Pág. 57 - 64
Foi estudado o desempenho da alga marinha Sargassum filipendula na remoção de níquel de uma solução de concentração de 50 mg L-1 em pH 3,5, em colunas de leito fixo que operam em ciclos de adsorção/dessorção. Foram testados dois sistemas de eluição; o pr...
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Atiqa Rahmawati,Aulia Iin Saputri,Ignatius Gunardi
Pág. 21 - 28
Glucose is the most abundant monosaccharide in nature, glucose obtained from cellulose and starch, it is many used to degradation process, and for the production of several organic compounds, one of the degradation products of glucose is an HMF (5-hydrox...
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Qusay A. Jawad, Dhafer S. Zinad, Rawaa Dawood Salim, Ahmed A Al-Amiery, Tayser Sumer Gaaz, Mohd S. Takriff and Abdul Amir H. Kadhum
Corrosion of a material by reaction with a corrosive environment is a common problem across many industries. Iraq is an oil country and corrosion represents a large portion of the total costs for oil producing and a natural potential hazard associated wi...
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Samantha Rodriguez,Edwuin Jesus Carrasquero Rodriguez,Luis Marcelo Lopez Lopez,Jorge Isaac Fajardo Seminario
El presente trabajo se evalúa el desempeño de dos aleaciones comerciales de aluminio anodizadas ante la corrosión y tribocorrosión. Para el anodizado se emplearon dos tipos de electrolitos distintos (H2SO4 y H2C2O4), un valor constante de densidad de cor...
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Casmir E. Gimba, Odike Ocholi, Peter A. Egwaikhide, Turoti Muyiwa, Emmanuel E. Akporhonor
Pág. 107 - 114
Activated carbons were prepared from Khaya senegalensis fruits. Carbonization and activation temperatures were 500oC and 800oC, respectively, at residence time of 5 min for each process. Activating agents were 1M each ...
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T Nel, C G C E van Sittert
Pág. 129
Fossielbrandstowwe se nadelige invloed, en die beperktheid daarvan, het groot belangstelling in die ontwikkeling en gebruik van volhoubare energiebronne teweeggebring (Nel et al. 2020). Verskeie alternatiewe energiebronne is tot dusver geïdentifiseer (Kr...
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Angel Villabona-Ortíz, Rodrigo Ortega-Toro and Candelaria Tejada-Tovar
Surface modification can improve the adsorption capacity of biochar. Biochar was produced from corn stalks (Zea mays) by pyrolysis at 520 °C, activated with sulfuric acid (H2SO4) using impregnation ratios of biomass weight: volume 1:2 (B 1:2) and 1:3 (B ...
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Juan Carlos López-Linares, Encarnación Ruiz, Inmaculada Romero, Eulogio Castro and Paloma Manzanares
In this work, the production of xylitol from a hemicellulosic hydrolysate of exhausted olive pomace (EOP), a residue originated in the olive oil production process by Candida boidinii, was assessed. The hydrolysate was obtained by dilute acid pretreatmen...
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Haihan Zhang, Li Xu and Guoji Liu
In this work, nitrogen-doped carbon materials (NCMs) were prepared using aniline-phenol benzoxazine (BOZ) or aniline-cardanol benzoxazine as the carbon precursor and SBA-15 as the hard template. The effects of the carbonization temperature (700, 800, and...
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Zeinab Abdel Hamid, Mona Hasan Gomaa, Sayed S. Abdel Rehim, Maamoun Abdel Hamid and Ahmed Ibrahim
Polyaniline (PANI) thin films incorporated with TiO2 or ZnO nanoparticles were synthesized via an electrochemical polymerization technique. Cyclic voltammetry (CV) was used to synthesize PANI from a strongly acidic medium (0.5 M H2SO4). The effects of di...
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Hock Fua Tan
Pág. 46
Lignocellulosic biomass is an alternative and renewable source of energy for the production of second generation of bioethanol. Hydrolysis is a crucial process that is required to generate fermentable sugar from the lignocellulosic biomass for the sustai...
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Ryno Van der Merwe, L A Cornish, J W Van der Merwe
Pág. 142
Tenks vervaardig van genormaliseerde sagte staal (kode SA516 Graad 70) is sedert 1993 vir die stoor en verspreiding van tegniese graad hidrofl uoorsuur (70% HF), in gebruik by die HF-aanleg op die Necsa-terrein. HF word kommersieel vervaardig deur d...
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Paula Michele da Silva Schmidt,Ubirajara Russi Nunes,Fernanda Alice Antonello Londero Backes,Pablo Reno da Silva Sangoi,Lovane Klein Fagundes,Tiéle Stuker Fernandes,Joner Silveira Dalcin
Pág. 53 - 60
Algumas espécies da família Cucurbitaceaeapresentam dormência de sementes, inclusive o maxixe. Assim, o objetivo destetrabalho foi estudar métodos de superação de dormência em sementes de maxixe.As sementes foram submetidas aos seguintes tratamentos: T1 ...
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