Results 21 to 30 of about 308,783 (259)

Photoinduced chlorophyll charge transfer state identified in the light-harvesting complex II from a marine green alga Bryopsis corticulans

open access: yesiScience, 2023
Summary: The light-harvesting complex II of Bryopsis corticulans (B-LHCII), a green alga, differs from that of spinach (S-LHCII) in chlorophyll (Chl) and carotenoid (Car) compositions. We investigated ultrafast excitation dynamics of B-LHCII with visible-
Dan-Hong Li   +12 more
doaj   +1 more source

Sizing of reactors by charts of Damköhler's number for solutions of dimensionless design equations

open access: yesHeliyon, 2020
The reaction kinetic rate and mass transport play an important role in the sizing and scale-up of reactors. The Damköhler's dimensionless number (Da) is the quotient of these effects.
Héctor L. Otálvaro-Marín   +1 more
doaj   +1 more source

Hydrophobic-modified metal-hydroxide nanoflocculants enable one-step removal of multi-contaminants for drinking water production

open access: yesiScience, 2021
Summary: Flocculation is a mainstream technology for the provision of safe drinking water but is limited due to the ineffectiveness of conventional flocculants in removing trace low-molecular-weight emerging contaminants.
Zhen Yang   +9 more
doaj   +1 more source

Modification and characterization of chicken eggshell for possible catalytic applications

open access: yesHeliyon, 2020
Researchers have shown considerable interest in finding a sustainable, low cost, and readily available substitute for the commercial calcium oxide (CaO) catalyst.
Omojola Awogbemi   +2 more
doaj   +1 more source

Efficient anaerobic digestion of a mild wet air pretreated molasses ethanol distillery stillage: A comparative approach

open access: yesHeliyon, 2020
The effect of a mild, wet air pretreatment and the subsequent anaerobic digestion (AD) was examined on the recovery of a complex and toxic molasses ethanol distillery stillage.
Getachew Dagnew Gebreeyessus   +4 more
doaj   +1 more source

The Role of Chemical Engineers in Environmental Protection

open access: yesAmerican Journal Of Chemistry And Chemical Engineering, 2022
Chemical engineers play a critical role in environmental protection by designing processes and technologies that minimize the environmental impact of industrial activities. Through the application of sustainable principles, chemical engineers help to reduce waste, conserve resources, and protect ecosystems.
openaire   +1 more source

Production of biodiesel by enzymatic transesterification of waste sardine oil and evaluation of its engine performance

open access: yesHeliyon, 2017
Waste sardine oil, a byproduct of fish industry, was employed as a low cost feedstock for biodiesel production. It has relatively high free fatty acid (FFA) content (32 mg KOH/g of oil).
A. Arumugam, V. Ponnusami
doaj   +1 more source

An evaluation of subcritical hydrothermal treatment of end-of-pipe palm oil mill effluent

open access: yesHeliyon, 2019
This study evaluates the effects of subcritical hydrothermal treatment on palm oil mill effluent (POME) and its concomitant formations of solid hydrochar, liquid product and gaseous product. The reactions were carried out at temperatures ranged 493 K–533
Zhan Sheng Lee   +2 more
doaj   +1 more source

Adsorption of lead ions from wastewater using nano silica spheres synthesized on calcium carbonate templates

open access: yesHeliyon, 2020
Lead is a heavy metal that is bio accumulative and non-biodegradable that poses a threat to our health when it exists in excess in our bloodstream. It has found its way into wastewater from mostly chemical industrial processes.
Milton Manyangadze   +6 more
doaj   +1 more source

Teaching Analysis in the Principles of Chemical Engineering for Environmental Engineering [PDF]

open access: yesProceedings of the 2015 International Conference on Social Science and Higher Education, 2015
According to the cultivation aims and characteristics of environmental engineering in major of environmental engineering, this article discusses the teaching reform from some new perspectives, such as the teaching contents and methods, arousing the students’ interest and thinking, promoting teaching by scientific research, and cultivation of ...
Li Zhang, Hongyong Xie, Zhiguo Sun
openaire   +1 more source

Home - About - Disclaimer - Privacy