Reset
Showing 20 of 84 academic articles

Sophorolipids Production from Oil Cake by Solid-State Fermentation. Inventory for Economic and Environmental Assessment

Alejandra Rodríguez, Teresa Gea, Xavier Font • Frontiers in Chemical Engineering (2021)

Biosurfactants are being proposed as a substitute for surfactants in the framework of a circular economy strategy. Sophorolipids (SL) are a type of biosurfactant produced by yeast that can be produced through submerged or solid-state fermen...

DOAJ Open Access (DOAJ) DOI: 10.3389/fceng.2021.632752

Preparation of Solid Superacid SO42-/ZnO-TiO2 and Its Action on Synthesis of Dimethyl Carbonate from Urea and Methanol

Xiaojun Guo, Rong Zhang, Li Zhang, Jun Yan • Iranian Journal of Chemistry & Chemical Engineering (2013)

SO42-/ZnO-TiO2 catalyst was prepared by sulfating ZnO-TiO2 powders with H2SO4 solution. The catalyst was characterized by XRD, IR and Hammett indicator. The catalyst showed strong acidity(H0 ≦-16.0). The optimum conditions are found that th...

DOAJ Open Access (DOAJ)

Synthesis and Characterization of Four Random copolymers Containing Fluorene as Electron Donors and Benzotriazole, Benzothiadiazole, Pyrido[3,4-b]pyrazine as Electron Acceptors

Shuang Chen, Lingqian Kong, Chaolei Ban, Jinsheng Zhao et al. • International Journal of Electrochemical Science (2018)

Four copolymers, poly(fluorene-pyrido[3,4-b]pyrazine) (PFPP), poly(benzotriazole-fluorene-pyrido[3,4-b]pyrazine) (PBTFPP), poly(benzotriazole-fluorene-benzothiadiazole) (PBTFBD), poly(benzothiadiazole-fluorene-benzothiadiazole) (PBDFBD)were...

DOAJ Open Access (DOAJ) DOI: 10.20964/2018.10.16

Leaching and recycling of NdFeB permanent magnets using ionic non-toxic hydrotropes instead of extractants

Asmae El Maangar, Clément Fleury, Stéphane Pellet-Rostaing, Thomas Zemb • Frontiers in Chemical Engineering (2024)

We show hereby that recycling of NdFeB permanent magnets by selective leaching and precipitation is possible, using an electrolyte as hydrotrope, thus avoiding the need of any specific extractant molecules. We analyse the yield of the extra...

DOAJ Open Access (DOAJ) DOI: 10.3389/fceng.2024.1420008

The Effect of Time on the Activation of Bayah Natural Zeolite for Application of Palm Oil Shell Pyrolysis

Endang Suhendi, Teguh Kurniawan, Adian Yoga Pradana, Vicky Zayan Giffari • Bulletin of Chemical Reaction Engineering & Catalysis (2021)

Oil palm shell (OPS) constitutes 60% of the waste generated during the processing of palm oil. However, OPS can potentially be converted into energy and chemicals through pyrolysis. The purpose of this study is to determine and analyse the ...

DOAJ Open Access (DOAJ) DOI: 10.9767/bcrec.16.3.10313.588-600

Controlling Frost Propagation on Polymeric Surfaces Using SI‐ATRP Chemical Micropatterning

Miisa J. Tavaststjerna, Stephen J. Picken, Santiago J. Garcia • Advanced Materials Interfaces (2025)

Abstract Micropatterned surfaces with both hydrophilic and hydrophobic regions are relevant for a wide range of applications from fuel cells to water harvesting systems. The preferential nucleation of water on hydrophilic regions can also b...

DOAJ Open Access (DOAJ) DOI: 10.1002/admi.202400838

Modelling the adsorption of iron and manganese by activated carbon from teak and shea charcoal for continuous low flow

Worlanyo Kwadjo Siabi, Emmanuel Degraft-Johnson Owusu-Ansah, Helen Michelle Korkor Essandoh, Nana Yaw Asiedu • Water-Energy Nexus (2021)

Nearly 6494 boreholes with iron (Fe) and manganese (Mn) concentrations above permissible limits of 0.3 mg/L and 0.4 mg/L respectively in Ghana have been abandoned because of ineffective water treatment solutions. Activated carbon prepared f...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.wen.2021.02.001

Deflection and bending moment dynamic load allowance of runway bridges: Theoretical and numerical studies

Yuxin Xue, Wei Hou, Yongjun Zhou, Huichi Li et al. • Journal of Traffic and Transportation Engineering (English ed. Online) (2026)

Runway bridges offer a practical structural solution for airport construction in terrain-constrained areas. However, their dynamic behavior under aircraft landing loads remains insufficiently studied, and design-oriented theoretical guidanc...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.jtte.2026.01.002

Numerical Simulation of Cooling Plate Using K-Epsilon Turbulence Model to Cool Down Large-Sized Graphite/LiFePO<sub>4</sub> Battery at High C-Rates

Satyam Panchal, Krishna Gudlanarva, Manh-Kien Tran, Münür Sacit Herdem et al. • World Electric Vehicle Journal (2022)

In this paper, an analogous study of the velocity and temperature profiles inside microchannel cooling plates (with hydraulic diameter of 6 mm), placed on a large pouch-type LiFePO4 battery, is presented using both the laboratory and simula...

DOAJ Open Access (DOAJ) DOI: 10.3390/wevj13080138

Visionary figures in the field of electrochemistry who revolutionized voltammetry

Rubin Gulaboski • Macedonian Journal of Chemistry and Chemical Engineering (2024)

Understanding energetics and electron behavior has been pivotal in elucidating numerous fundamental phenomena, including electricity, corrosion, respiration, energy generation in biological systems, intermolecular interactions within living...

DOAJ Open Access (DOAJ) DOI: 10.20450/mjcce.2024.2847

Palladium-Catalyzed Stereoselective Construction of 1,3-Stereocenters Displaying Axial and Central Chirality via Asymmetric Alkylations

Aiqi Xue, Xingfu Wei, Yue Huang, Jingping Qu et al. • Molecules (2023)

The concurrent construction of 1,3-stereocenters remains a challenge. Herein, we report the development of stereoselective union of a point chiral center with allenyl axial chirality in 1,3-position by Pd-catalyzed asymmetric allenylic alky...

DOAJ Open Access (DOAJ) DOI: 10.3390/molecules28072927

Continuous Field Determination and Ecological Risk Assessment of Pb in the Yellow Sea of China

Zhiwei Zhang, Dawei Pan, Yan Liang, Md. Abdur Rahman et al. • Journal of Marine Science and Engineering (2024)

Field determination and ecological risk assessment of dissolved lead (Pb) were performed at two Yellow Sea sites in China using a continuous automated electrochemical system (CAEDS). This CAEDS instrument includes an automatic triple filter...

DOAJ Open Access (DOAJ) DOI: 10.3390/jmse12081452

Development of functional cookies form wheat-pumpkin seed based composite flour

Feriehiwote Weldeyohanis Gebremariam, Eneyew Tadesse Melaku, Venkatesa Prabhu Sundramurthy, Henock Woldemichael Woldemariam • Heliyon (2024)

To develop high quality cookies, even seemingly smallest changes depended on factors that can affect taste, texture, and nutritional value. In this light, this study aimed to investigate the upshot of refined wheat flour and pumpkin seed fl...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.heliyon.2024.e24443

Advances of Single‐Atomic Cobalt Catalysts in Liquid‐Phase Selective Oxidative Reactions

Jiaquan Li, Kai Wang, Yijiao Jiang, Jun Huang et al. • Small Science (2023)

Single‐atom catalysts (SACs) composed of atomically dispersed metal‐active sites embedded in supporting substrates are attracting increasing attention in liquid‐phase selective oxidation reactions with joint merits of both advanced catalyti...

DOAJ Open Access (DOAJ) DOI: 10.1002/smsc.202300079

Investigation of single bubble behavior under rolling motions using multiphase MPS method on GPU

Muhammad Abdul Basit, Wenxi Tian, Ronghua Chen, Romana Basit et al. • Nuclear Engineering and Technology (2021)

Study of single bubble behavior under rolling motions can prove useful for fundamental understanding of flow field inside the modern small modular nuclear reactors. The objective of the present study is to simulate the influence of rolling ...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.net.2020.12.013

Succinic acid Production Strategy: Raw material, Organisms and Recent Applications in pharmaceutical and Food: Critical Review

Ramzi A. Abd Alsaheb, Mohammed A. Atyia, Jaafar Kamil Abdullah, Azza Hashim Abbas • Al-Khawarizmi Engineering Journal (2023)

Succinic acid is an essential base ingredient for manufacturing various industrial chemicals. Succinic acid has been acknowledged as one of the most significant bio based building block chemicals. Rapid demand for succinic acid has been not...

DOAJ Open Access (DOAJ) DOI: 10.22153/kej.2023.01.002

Adsorption and Corrosion Inhibition Behaviour of Oil Extracted from Moringa peregrina leaves for Carbon Steel in Acidic Media: Experimental and Computational Studies

Ismat H. Ali, Mohammad I. Khan, Alhafez M. Alraih, Mohammed K. Almesfer et al. • International Journal of Electrochemical Science (2021)

The current research aimed at investigating the potential corrosion inhibitory effect of essential oil extracted from Moringa peregrina leaves on carbon steel in acidic conditions. Gas chromatography (GC) and scanning electron microscope (S...

DOAJ Open Access (DOAJ) DOI: 10.20964/2021.08.49