A simulation study on the process design and optimization pressure swing separation of azeotropic mixture methanol and toluene.

Pressure Swing Distillation (PSD) is the only advanced technology that does not require the addition of third components to the system to enhance the separation of azeotropic mixtures. It outperforms homogeneous distillation for separating pressure-sensitive azeotropic mixtures. In this study, we aimed to separate methanol and toluene using the Non-Random Two-Liquid (NRTL) and Aspen Plus thermodynamic calculation models to simulate a binary homogeneous azeotropic system.

Impact analysis of renewable portfolio standard on retail power market considering quota heterogeneity.

To promote the development of the renewable energy (RE) industry, China officially implemented renewable portfolio standard (RPS) in 2020, the policy effect of which is closely related to the amount of renewable power offered to users by power-selling enterprises. We use evolutionary game theory to analyze the behavioral strategies of regional governments, regulatory authorities, and power-selling enterprises under RPS, and build a system dynamics (SD) model to determine the influence of the relevant parameters on stakeholders' strategy making considering quota heterogeneity. The results show that: (1) enterprises evolve to being stable earlier in high-quota area than in low-quota area, which infers that RE development has a certain bottleneck in the initial stage and that RPS can play an effective role; (2) a high certificate price can not only help power selling companies evolve to being stable, but also promote the withdrawal of governments subsidies; (3) to increase the proportion of renewable electricity, the net profit of RE power should not be lower than that of conventional energy; and (4) the incentive effect of subsidy income is not stronger than that of resale income, while when compared with penalty, the incentive effect is stronger, and penalty is not more severe and actually better.

Cellulose Degradation Enzymes in Filamentous Fungi, A Bioprocessing Approach Towards Biorefinery.

The economic exploration of renewable energy resources has hot fundamentals among the countries besides dwindling energy resources and increasing public pressure. Cellulose accumulation is a major bio-natural resource from agricultural waste. Cellulases are the most potential enzymes that systematically degrade cellulosic biomass into monomers which could be further processed into several efficient value-added products via chemical and biological reactions including useful biomaterial for human benefits.

Advances in sewage sludge application and treatment: Process integration of plasma pyrolysis and anaerobic digestion with the resource recovery.

Sewage sludge (SS) is an environmental issue due to its high organic content and ability to release hazardous substances. Most of the treatments available are biological, thermal hydrolysis, mechanical (ultrasound, high pressure, and lysis), chemical with oxidation (mainly ozonation), and alkali pre-treatments. Other treatment methods include landfill, wet oxidation, composting, drying, stabilization, incineration, pyrolysis, carbonization, liquefaction, gasification, and torrefaction.

Visible-light-driven simultaneous decontamination of multi-antibiotics by facile synthesized BiOCl loaded food wastes biochar.

Environmental dissemination caused by widespread use of antibiotics has been regarded as a possible hazard to aquatic ecosystem and human health. The increasing misgivings make it imperative to develop a novel catalyst with remarkable visible-light-driven activity to remove antibiotics, especially for their simultaneous decontamination. Herein, C/BiOCl composites were successfully prepared by decorating BiOCl nanosheets on food wastes biochar (C) by a simple hydrolysis strategy.

Improving photocatalytic activity under visible light over a novel food wastes biochar-based BiOBr nanocomposite.

Biochar (C) applied in synthesizing photocatalysts to eliminate water pollution has been intensively investigated. Herein we report the first use of biochar pyrolyzed from food wastes at 400 C (400C) and 700 C to construct C/BiOBr composites via a facile hydrolysis approach. Photocatalytic performances could be significantly improved by choosing the appropriate carbonization temperature and adjusting the content of C in C/BiOBr composites.

Perspectives of nervonic acid production by Yarrowia lipolytica.

Nervonic acid (cis-15-tetracosenoic acid, 24:1Δ15) is a long chain monounsaturated fatty acid, mainly exists in white matt er of the human brains. It plays an important role in the development of nervous system and curing neurological diseases. The limited natural sources and high price are considered limiting factors for the extensive application of nervonic acid.

Insight into single-element nobel metal anisotropic silver nanoparticle shape-dependent selective ROS generation and quantification.

The biocidal action mechanism of single element noble metal anisotropic nanoparticles has remained a perplexing challenge. Herein, we investigated the photogenerated anisotropic AgNP ROS production kinetics and each ROS species' direct impact on Gram-negative and Gram-positive bacteria. Three shapes (Triangular, Cubes, Rods) of AgNP with excellent morphology were fabricated plasmon mediated synthesis.

Swine manure valorization in fabrication of nutrition and energy.

Renewable energy can boost the growing population's need and rapid budgetary development. To reduce fossil fuel consumption is the initial purpose of renewable and sustainable energy, producing valuable bio-based products. The fermenters, using for pretreatment of swine manure, and involvement of swine carcasses are reported to enhance organic loading rate followed by improved biogas yield on household digesters.

Dissecting microbial community structure in sewage treatment plant for pathogens' detection using metagenomic sequencing technology.

Continuous observation of wastewater treatment plants is very crucial to keep them safe for proper use and protection from pathogenic contamination. Illumina sequencing technology was used for microbiome structuring from various samples taken from different portions of the wastewater treatment plant, including influent, activated, return sludge and effluent, where different microbial compositions were found. The effluent section was found to have pathogenic microbes such as viruses, Alpha- and deltaproteobacteria, Actinobacteria, Bacteroidetes, clostridia, and bacilli in various concentrations.

Cross-linked chitosan/zeolite as a fixed-bed column for organic micropollutants removal from aqueous solution, optimization with RSM and artificial neural network.

Organic micropollutants (MPs) in low concentrations can affect aquatic ecosystems and human health. Adsorption technique is one of the promising methods to remove MPs. Chitosan and zeolites are environmentally friendly and low-cost adsorbents.

Evaluation of bacterial association in methane generation pathways of an anaerobic digesting sludge via metagenomic sequencing.

Anaerobic digestion, a recently hot technology to produce biogases especially methane generation for biofuel from wastewater, is considered an effective explanation for energy crisis and global pollution threat. A complex microbiome population is present in sludge, which plays an important role in the digestion of complex polymer into simple monomers. 16S rRNA approaches simply are not enough for amplification due to the involvement of extreme complex population.

Metagenomic analysis and characterization of acidogenic microbiome and effect of pH on organic acid production.

Organic acid production including lactate and acetate is an economically attractive technology that has gained momentum worldwide over the past years. These series of action need to be performed by an esoteric and complex microbial community, in which different members have distinct roles in the establishment of a collective organization. In this study, we analyzed the bioma from bioreactors with various pH conditions of 4.

Influence of climate and environmental change in Nigeria: a review on vulnerability and adaptation to climate change.

This paper reviews the current issues that involve environmental changes in Nigeria and environmental threats within the country. The fundamental aim of scientific knowledge in environmental studies is to reconcile climate change and environmental sustainability with developmental goals. Therefore, information on impact adaptation to climate change and vulnerability research is required to develop specific, action-oriented, interdisciplinary, successful, sociopolitical and democratic reform for the entire population of a country.