Review
Environmental Sciences
Pankaj Kumar Maurya, Soumila Mondal, Vinod Kumar, Shailendra Pratap Singh
Summary: By 2050, the total global population is estimated to exceed 9 x 10(3) million, posing a challenge in providing energy and clean environment. Population growth leads to changes in land use and increased greenhouse gas emissions. Energy consumption affects the quality of the environment, resulting in ocean acidification and other environmental fluctuations.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Review
Energy & Fuels
Renganathan Rajkumar, Mohd Sobri Takriff, Ashokkumar Veeramuthu
Summary: This article discusses the use of microalgae for CO2 sequestration, including different designs of photobioreactors and biomass production. It also examines the influence of physicochemical factors on reactor configurations and introduces the concept of algal bio-refinery and its industrial applications.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Green & Sustainable Science & Technology
Alexandros Pavlou, Giannis Penloglou, Costas Kiparissides
Summary: The positive environmental impact of microalgae-based technologies has been proven in many studies, but there are still major technical and economic obstacles to be overcome. Further research and innovation are necessary for the development and commercial exploitation of large-scale, sustainable processes using industrial microalgae strains and novel photobioreactors. The investigation aimed to compare different microalgae strains based on productivity criteria, and the wild type strain of Stichococcus sp. met the criteria with a biomass concentration of 1.68 g·L-1 and a concentration of total biochemical products of 1.4 g·L-1 in batch cultivation experiments. Cultivation in an innovative tubular recirculating photobioreactor resulted in the highest biomass and biochemical product concentrations of 3.66 g·L-1 and 3.33 g·L-1, respectively.
Article
Environmental Sciences
Vincenzo Senatore, Antonio Buonerba, Tiziano Zarra, Giuseppina Oliva, Vincenzo Belgiorno, Joanna Boguniewicz-Zablocka, Vincenzo Naddeo
Summary: This study presents an innovative membrane photo-bioreactor technology for enhancing CO2 capture and algal biomass production efficiency. Results showed that increasing photon flux density and liquid/gas ratio can enhance biomass yield and CO2 removal efficiency.
Article
Engineering, Environmental
Dan Gu, Jinkun You, Qiu Xiao, Xuya Yu, Yongteng Zhao
Summary: This study demonstrates the use of selenium nanoparticles (SeNPs) to increase biomass productivity and lipid production, as well as enhance cadmium tolerance in microalgae. SeNPs improve cell growth and cadmium tolerance by upregulating photosynthesis, the TCA cycle, and the antioxidant system, reducing cadmium uptake and translocation, and decreasing oxidative stress levels. The presence of both SeNPs and cadmium stress leads to higher energy yield and lipid content.
Article
Agricultural Engineering
Yi An Lim, Nicholas M. H. Khong, Sajeewa Dilshan Priyawardana, Khi Rern Ooi, I. M. S. K. Ilankoon, Meng Nan Chong, Su Chen Foo
Summary: Microalgae species, Chlorella and Chlamydomonas, showed increased biomass concentration under elevated CO2 levels due to their cell concentrations, while Chlorella and Nostoc exhibited enhanced cell sizes at high CO2 concentrations. These findings provide new insights for designing carbon capture and storage schemes and biochemical production.
BIORESOURCE TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Lenin C. Kandasamy, Marcos A. Neves, Mikihide Demura, Mitsutoshi Nakajima
Summary: The study showed that the concentration of CO2 has a significant impact on both growth and biochemical composition. The maximum biomass productivity and CO2 fixation rate were observed at 400 mg L-1 of Tco(2), with values of 22.10 +/- 0.70 mg L-1 day(-1) and 28.85 +/- 3.00 mg L-1 day(-1) respectively. The highest carbohydrate and protein contents were observed at 400 mg L-1, while the maximum lipid content was at 800 mg L-1 of Tco(2) in the bulk medium.
Review
Biotechnology & Applied Microbiology
P. Priyadharsini, N. Nirmala, S. S. Dawn, A. Baskaran, P. SundarRajan, K. P. Gopinath, J. Arun
Summary: Algae, carbon dioxide, and wastewater have emerged as promising research topics. Improving photosynthesis process and utilizing genetic engineering methods can enhance CO2 fixation and biomass productivity.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
Article
Environmental Sciences
Dan Zhang, Siyuan An, Rao Yao, Wen Fu, Yujie Han, Ming Du, Zixi Chen, Anping Lei, Jiangxin Wang
Summary: Life cycle assessment (LCA) is a powerful tool for evaluating environmentally sustainable production or consumption. Microalgae, with their potential to produce biofuels, food ingredients, and biomaterials, are valuable resources. However, LCA evaluation of microalgae is currently limited, especially for autotrophic cultivation and products other than biofuels.
FRONTIERS IN MARINE SCIENCE
(2022)
Review
Agricultural Engineering
Xiaoyuan Zhang, Lei An, Junli Tian, Bin Ji, Jinfeng Lu, Yu Liu
Summary: This article provides a preliminary analysis on the carbon capture potential of microalgal cultivation, indicating that the energy consumption and nutrient input can result in significant indirect carbon emissions, making microalgal carbon capture less effective. The current processes may not be environmentally sustainable and economically viable, thus renewable energy and cheap nutrient sources should be explored to reduce indirect carbon emissions and promote complete nutrient recycling through using microalgae as biofertilizers or aquafeeds.
BIORESOURCE TECHNOLOGY
(2023)
Review
Environmental Sciences
Hareb Al-Jabri, Probir Das, Shoyeb Khan, Mahmoud Thaher, Mohammed AbdulQuadir
Summary: Microalgae are efficient in treating wastewater due to their ability to utilize nutrients in water bodies without the need for organic sources. Their potential applications in wastewater treatment and ability to be integrated with other methods make them a promising solution for pollutant removal.
Article
Agricultural Engineering
V. Godvin Sharmila, J. Rajesh Banu, M. Dinesh Kumar, S. Adish Kumar, Gopalakrishnan Kumar
Summary: Algae biomass is a viable feedstock for manufacturing biofuels due to its various biological elements. The high production costs of algal biofuels hinder their commercialization, thus extraction of high value added bioproducts from algal biomass is required to increase economic viability. This study discusses the economic benefits of a zero-carbon economy and sustainable algae resource in decarbonizing the environment through algal-based biofuel production, and emphasizes the feasibility and commercialization of algae biorefineries.
BIORESOURCE TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Yongfu Li, Ziyue Qiu, Hongwu Cui, Lu Wang, Litao Zhang
Summary: This study investigated the role of 5-aminolevulinic acid (5-ALA) in the regulation of photosynthesis, biomass accumulation, lipid production, and nutrient removal from wastewater by Chlorella pyrenoidosa. The addition of 3 μM 5-ALA in wastewaters increased the photosynthetic activity of the cells, facilitated cellular growth and metabolism, promoted lipid production, and accelerated nutrient removal.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Biotechnology & Applied Microbiology
Rodrigo Nunes Oss, Ricardo Franci Goncalves, Servio Tulio Cassini, Miguel Angelo Schettino Junior, Daniel Fernandes Cipriano, Jair Carlos Checon de Freitas
Summary: This study investigated the production of activated carbon using microalgae biomass from a wastewater treatment plant as a precursor. The results showed that the carbonization and physical activation process can be done in a single step using water vapor. The best condition for the production of activated carbon was carbonization at 800 degrees C and activation with water vapor in a ratio of 4 g water per gram of sample.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
Article
Thermodynamics
Shuo Yuan, Wenbin Lei, Qi Liu, Runze Liu, Jingping Liu, Jianqin Fu, Yubo Han
Summary: This study predicts the potential distribution of global microalgae biomass energy using a mathematical model and provides reference for the development and site selection of microalgal biomass energy. The global potential biomass is estimated to be substantial, indicating its significant energy value.
Article
Thermodynamics
Pengcheng Zhao, Jingang Wang, Liming Sun, Yun Li, Haiting Xia, Wei He
Summary: The production of green hydrogen through water electrolysis is crucial for renewable energy utilization and decarbonization. This research explores the optimal electrode configuration and system design of compactly-assembled industrial electrolyzer. The findings provide valuable insights for industrial application of water electrolysis equipment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
V. Baiju, P. Abhishek, S. Harikrishnan
Summary: Thermally driven adsorption desalination systems (ADS) have gained attention as an eco-friendly solution for water scarcity. However, they face challenges related to low water productivity and scalability. To overcome these challenges, integrating ADS with other desalination technologies can create a small-scale hybrid system. This study proposes integrating ADS with a Thermo Electric Dehumidification (TED) unit to enhance its performance.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
C. X. He, Y. H. Liu, X. Y. Huang, S. B. Wan, Q. Chen, J. Sun, T. S. Zhao
Summary: A decentralized centroid multi-path RC network model is constructed to improve the temperature prediction accuracy compared to traditional RC models. By incorporating multiple heat flow paths and decentralizing thermal capacity, a more accurate prediction is achieved.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chaoying Li, Meng Wang, Nana Li, Di Gu, Chao Yan, Dandan Yuan, Hong Jiang, Baohui Wang, Xirui Wang
Summary: There is an urgent need to shift away from heavy dependence on fossil fuels and embrace renewable energy sources, particularly in the energy-intensive oil refining process. This study presents an innovative concept called the Solar Oil Refinery, which applies solar energy in oil refining. A solar multi-energies-driven hybrid chemical oil refining system that utilizes solar pyrolysis and electrolysis has been developed, significantly improving solar utilization efficiency, cracking rate, and hydrogen yield.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chao Ma, Guanghui Wang, Dingbiao Wang, Xu Peng, Yushen Yang, Xinxin Liu, Chongrui Yang, Jiaheng Chen
Summary: This study proposes a bio-inspired fish-tail wind rotor to improve the wind power efficiency of the traditional Savonius rotor. Through transient simulations and orthogonal experiments, the key factors affecting the performance are identified. A response surface model is constructed to optimize the power coefficient, resulting in an improvement of 9.4% and 6.6% compared to the Savonius rotor.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sina Bahmanziari, Abbas-Ali Zamani
Summary: This paper proposes a new framework for improving electrical energy harvesting from piezoelectric smart tiles through a combination of magnetic plucking, mechanical impact, and mechanical vibration force mechanisms. Experimental results demonstrate a significant increase in energy yield and average energy harvesting time compared to other mechanisms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Nanjiang Dong, Tao Zhang, Rui Wang
Summary: This study establishes a multiobjective mixed-variable configuration optimization model for a comprehensive combined cooling, heating, and power energy system, and proposes an efficient generating operator to optimize this model. The experimental results show that the proposed algorithm performs better than other state-of-the-art algorithms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Ahmed E. Mansy, Eman A. El Desouky, Tarek H. Taha, M. A. Abu-Saied, Hamada El-Gendi, Ranya A. Amer, Zhen-Yu Tian
Summary: This study aims to convert office paper waste into bioethanol through a sustainable pathway. The results show that physiochemical and enzymatic hydrolysis of the waste can yield a high glucose concentration. The optimal conditions were determined using the Box-Behnken design, and a blended membrane was used for ethanol purification.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sven Klute, Marcus Budt, Mathias van Beek, Christian Doetsch
Summary: Heat pumps are crucial for decarbonizing heat supply, and steam generating heat pumps have the potential to decarbonize the industrial sector. This paper presents the current state, technical and economic data, and modeling principles of steam generating heat pumps.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Le Zhang, To-Hung Tsui, Yen Wah Tong, Pruk Aggarangsi, Ronghou Liu
Summary: This study investigates the effectiveness of a current-carrying-coil-based magnetic field in promoting anaerobic digestion of chicken manure. The results show that the applied magnetic field increases methane yield, decreases carbon dioxide production, and reduces the concentration of ammonia nitrogen. Microbial community analysis reveals the enrichment of certain methanogenic genera and enhanced metabolic pathways. Pilot-scale experiments confirm the technical effectiveness of the magnetic field assistance in enhancing anaerobic digestion of chicken manure.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Bo Chen, Ruiqing Ma, Yang Zhou, Rui Ma, Wentao Jiang, Fan Yang
Summary: This paper presents an advanced energy management strategy for fuel cell hybrid electric heavy-duty vehicles, focusing on speed planning and energy allocation. By utilizing predictive co-optimization control, this strategy ensures safe inter-vehicle distance and minimizes energy demand. Simulation results demonstrate the effectiveness of the proposed method in reducing fuel cell degradation cost and overall operation cost.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Fabio Fatigati, Roberto Cipollone
Summary: Organic Rankine Cycle-based microcogeneration systems that use solar sources to generate electricity and hot water can help reduce CO2 emissions in residential energy-intensive sectors. The adoption of a recuperative heat exchanger in these systems improves efficiency, reduces thermal power requirements, and saves on electricity costs.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Lipeng He, Renwen Liu, Xuejin Liu, Xiaotian Zheng, Limin Zhang, Jieqiong Lin
Summary: This research proposes a piezoelectric-electromagnetic hybrid energy harvester (PEHEH) for low-frequency wave motion and self-sensing wave environment monitoring. The PEHEH shows promising power output and the ability to self-power and self-sense the wave environment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Shangling Chu, Yang Liu, Zipeng Xu, Heng Zhang, Haiping Chen, Dan Gao
Summary: This paper studies a distributed energy system integrated with solar and natural gas, analyzes the impact of different parameters on its energy utilization and emissions reduction, and obtains the optimal solution through an optimization algorithm. The results show that compared to traditional separation production systems, this integrated system achieves higher energy utilization and greater reduction in carbon emissions.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Qingpu Li, Yaqi Ding, Guangming Chen, Yongmei Xuan, Neng Gao, Nian Li, Xinyue Hao
Summary: This paper proposes and studies a piston-type thermally-driven pump with a structure similar to a linear compressor, aiming to eliminate the high-quality energy consumption of existing pumps and replace mechanical pumps. The coupling mechanism of working fluid flow and element dimension is analyzed based on force analysis, and experimental data analysis is used to determine the pump operation stroke. Theoretical simulation is conducted to analyze the correlation mechanism of the piston assembly. The research shows that the thermally-driven pump can greatly reduce power consumption and has potential for industrial applications.
ENERGY CONVERSION AND MANAGEMENT
(2024)