Article
Agricultural Engineering
Baobei Wang, Xueshan Pan, Fang Wang, Lulu Liu, Jing Jia
Summary: This study analyzed the biochemical compositions and proteomics of mixotrophic Haematococcus pluvialis under different light conditions. The findings showed that high light exposure increased astaxanthin, carbohydrate, and fatty acid contents, and regulated multiple metabolic pathways. A regulatory model for mixotrophic Haematococcus pluvialis coping with high light stress was proposed.
BIORESOURCE TECHNOLOGY
(2022)
Article
Agricultural Engineering
Rongrong Lv, Kai Liu, Feng Chen, Hailiang Xing, Nianjun Xu, Xue Sun, Chaoyang Hu
Summary: This study revealed the reasons for cell death induced by NaAc supplementation and provided a rapid, easy, and effective method for the production of a large amount of astaxanthin.
BIORESOURCE TECHNOLOGY
(2022)
Review
Environmental Sciences
A. Cabrera-Reina, S. Miralles-Cuevas, J. A. Sanchez Perez, R. Salazar
Summary: This work critically reviews the current knowledge on the use of Raceway Pond Reactors (RPR) for treating secondary effluents from municipal wastewater treatment plants (MWWTP) through the solar photo-Fenton process, as well as the potential application of RPR in industrial wastewater treatment. The study outlines the concept and operation principles of RPR, and presents key findings related to the removal of contaminants of emerging concern, microbial inactivation, industrial wastewater treatment, and kinetic modeling. The review also addresses important aspects such as liquid depth impact, feasibility of continuous flow operation, increased treatment capacity, and kinetic modeling, while identifying main challenges and research gaps for future research focus.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Fisheries
Yu Liu, Mingtao Lei, Hector Victor, Zhangyi Wang, Cong Yu, Gaoli Zhang, Yan Wang
Summary: The study found that the optimal feeding frequency for largemouth bass reared in pond was 3 meals per day, and 2 meals per day for those reared in in-pond raceway. The in-pond raceway system was not suitable for commercial largemouth bass farming.
Article
Chemistry, Multidisciplinary
Samuel A. Ivko, Tom Bailey, Lee Brammer, Anthony Haynes
Summary: In this study, the active anionic rhodium complex is immobilized in a metal-organic framework (MOF) through Coulombic interactions. The MOF-supported catalyst shows activity for the carbonylation of methanol and retains its framework crystallinity after catalysis. Intermediates observed in the catalytic cycle confirm a mechanism consistent with the established homogeneous process.
CHEMICAL COMMUNICATIONS
(2022)
Article
Biotechnology & Applied Microbiology
Jack Hoeniges, William Welch, Jeremy Pruvost, Laurent Pilon
Summary: The use of external mirrors can increase the solar flux and biomass productivity in outdoor raceway ponds for microalgae cultivation. Configuration C, with a single north mirror, is considered to be the simplest and most cost-effective method to increase raceway productivity, with a potential yield increase of up to 73% in the winter months.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
Article
Biochemistry & Molecular Biology
Xunchao Zhang, Lihua Kang, Mingyuan Zhu
Summary: The study found that the catalytic activity of boron nitride nanomaterials for the acetylene acetate reaction is influenced by geometric structure and reaction sites, and zero-dimensional boron nitride nanomaterials can break the inherent reaction inertia, showing good catalytic activity.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Engineering, Environmental
Xue Li, Mingming Song, Ze Yu, Chen Wang, Jing Sun, Kunyang Su, Na Liu, Yiwen Mou, Tianxiang Lu
Summary: The study demonstrates the potential of microalga Chlorella pyrenoidosa in utilizing the low-cost carbon source acetic acid (AcA) for biomass and lipid accumulation, with the highest productivity achieved at 10 g/L of AcA in a heterotrophic mode. This promising method not only improves lipid production but also shows high nutrient removal efficiency and AcA assimilation efficiency, highlighting a win-win approach for AcA recycling and microalgae-based biodiesel production.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Ricardo Salazar, Sebastian Campos, Javier Martinez, Francisca Luna, Abdoulaye Thiam, Mario Aranda, Wendy Calzadilla, Sara Miralles-Cuevas, Alejandro Cabrera-Reina
Summary: In this study, a solar electrochemical-raceway pond reactor (SEC-RPR) was used to treat textile industrial wastewater by solar photoelectron-Fenton (SPEF) for the first time. The experimental variables and optimal conditions for methyl orange removal, mineralization, and decolorization were investigated. The results showed that the SPEF process using SEC-RPR achieved high mineralization rates and complete decolorization. The study also proposed a reaction pathway for the mineralization of methyl orange. This work is an important step towards the development of a demo-scale SEC-RPR.
ENVIRONMENTAL RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Wenjuan Chang, Yanpeng Li, Yanhui Qu, Yi Liu, Gaoshan Zhang, Yan Zhao, Siyu Liu
Summary: Microalgal cultivation is challenging in commercial application due to the small size and low density of microalgae. This study investigated the synergistic effect of phytohormones and light spectra on the growth and lipid production of Chlorella vulgaris. Optimal carbon and nitrogen concentrations, as well as the optimum dosage of the phytohormone indole-3-acetic acid (IAA), were evaluated under mixotrophic cultivation. The results showed that under the optimum IAA treatment and irradiation with red light, the highest biomass, lipid content, and lipid productivity were achieved. These findings provide new insights for highly efficient microalgal cultivation.
Article
Agricultural Engineering
Yanbo Ma, Yuyong Hou, Weijie Wang, Meijie Cui, Zhile Guo, Tong Han, Zhiyong Liu, Nahui Hao, Fangjian Chen, Lei Zhao
Summary: Mixotrophic microalgae cultivation can increase biomass, but the utilization mechanism of inorganic carbon (IC) and organic carbon (OC) is unknown. This study characterized the consumption of IC and OC, chlorophyll fluorescence parameters, intracellular NADPH content, and transcriptional changes in related genes. The results showed that IC was preferentially utilized, with 76% consumed within 8 hours. Subsequently, OC became the dominant carbon resource. The addition of bicarbonate enhanced photosynthesis and OC assimilation. These findings provide insights into carbon utilization under mixotrophic conditions and clues for promoting microalgae growth.
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Hong Liao, Xin Li, Zhina Lian, Yong Xu, Junhua Zhang
Summary: This study optimized the production of xylooligosaccharides (XOS) and monosaccharides from corncobs using acid-base conjugate system hydrolysis and enzyme hydrolysis, achieving high yields without the need for xylan isolation and purification.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Shurong Wang, Huanhuan Yao, Weike Zhu, Cheng Wu, Zhiyue Tang, Junke Liu, Liming Ding, Feng Hao
Summary: To solve the problems of uncontrollable crystallization process and facile oxidation of Sn2+, a series of acetates are introduced into the perovskite precursor solution. Formamidine acetate (FAAc) is found to have strong C(sic)O-Sn coordination with Sn2+, which can stabilize the lattice structure, minimize defect states, and suppress the oxidation of Sn2+. By introducing FAAc into the precursor, the power conversion efficiency of the device is increased from initially 9.84% to 12.43%, and it can maintain 94% of its initial value for 2000 hours in N2 atmosphere. This work provides a feasible strategy for depositing high-quality tin perovskite films, which is crucial for related photovoltaics and other optoelectronic devices.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Environmental Sciences
Kamala Gharti, Li Yan, Kang Li, Nattida Boonpeng, Liping Liu
Summary: In-pond raceway aquaculture (IPRA) has been shown to effectively reduce water eutrophication, improve pond environment, and enhance fish production and quality. This study compared the growth performances and muscle quality of grass carp raised in IPRA and traditional pond culture (TPC). While there were no significant differences in hepatosomatic index, visceral mass ratio, and correction factor between IPRA and TPC, grass carp raised in IPRA exhibited higher weight gain rate and crude lipid content in their flesh. However, the pH, water holding capacity, hardness, and chewiness of grass carp muscle were similar between the two culture systems. The concentration of 2-MIB in the muscle increased continuously in IPRA. Additionally, the bacterial community analysis showed higher abundance of Proteobacteria in TPC and higher richness of Planctomycetes in IPRA. Despite the higher stocking density, the off-flavor in IPRA-produced grass carp had less impact on the aesthetic quality of their flesh compared to TPC. Overall, the results suggest that IPRA can produce grass carp with better muscle quality.
Article
Environmental Sciences
Seong Heon Cho, Sungyup Jung, Joerg Rinklebe, Eilhann E. Kwon
Summary: This study investigated the direct disposal process of cellulose acetate (CA) with its valorization to syngas through pyrolysis, using CO2 as a co-feedstock to enhance the conversion. Multi-stage pyrolysis and catalytic pyrolysis were employed to expedite syngas formations, showing significant enhancement with Ni catalysts and CO2 due to combined effects on gas phase reactions and coke deposition suppression. This study proved a direct and versatile technical platform to convert CA and CO2 into syngas.
ENVIRONMENTAL POLLUTION
(2021)
