Article
Engineering, Environmental
Chenlin Wang, Yanfei Zheng, Ruikang Li, Qingrong Yin, Chunfeng Song
Summary: This study investigated the toxicity, degradation, and metabolic pathway of cefradine in two microalgal species. The results showed that both microalgae exhibited excellent degradation performance for cefradine and had the capacity to restore growth in high concentrations. Hydrolysis and biodegradation were identified as the main mechanisms of cefradine degradation on algae. The study provides valuable insights into the environmental risks of cefradine in wastewater and the efficient removal of cefradine by microalgae.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Agronomy
Jun Tang, Jun Yang, Sirui Zhao, Xiaoyu Wang, Zhengxin Xie
Summary: The study investigates the ecotoxicity of tetracycline (TC) on the freshwater alga Chlorella pyrenoidosa and its removal efficiency. The results show that TC has inhibitory effects on microalgal growth and photosynthetic activities but these effects are reversible. C. pyrenoidosa exhibits high removal efficiency for TC through biodegradation and abiotic processes.
Article
Environmental Sciences
Kai Liu, Jiping Li, Yuhao Zhou, Wei Li, Hu Cheng, Jiangang Han
Summary: The combined ecotoxicity of erythromycin (ERY) and roxithromycin (ROX) on microalgae and their removal efficiency during exposure were investigated in this study. The results showed that the mixture of ERY+ROX had an antagonistic effect on Chlorella pyrenoidosa. In addition, the combined treatment had higher antioxidant stress and removal efficiency than individual treatments, especially at low concentrations.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Microbiology
Bing Li, Di Wu, Yan Li, Yan Shi, Chenlin Wang, Jiasi Sun, Chunfeng Song
Summary: Antibiotic resistance is a significant environmental challenge, and the use of microalgae for environmental purification shows great potential, particularly in the degradation of sulfadimethoxine.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Yongchao Li, Xiaoyan Yang, MingHung Wong, Bing Geng
Summary: With the extensive use of herbicides in agriculture, nearby waters are polluted by atrazine. The isolated Citricoccus sp. strain TT3 in the lab can transform atrazine into harmless cyanuric acid under natural conditions. To solve the problem of weak resistance of bacteria to harsh water environments, Chlorella vulgaris was combined with atrazine degradation bacteria and co-immobilized in porous beads. The study provided insight into the practical application of atrazine biodegradation technology.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2023)
Article
Engineering, Chemical
Jia Xin Yap, C. P. Leo, Derek Juinn Chieh Chan, Nazlina Haiza Mohd Yasin, Mohd Shaiful Sajab
Summary: Water pollution requires sustainable materials for green treatment solutions. This study successfully extracted nanocellulose from microalgae through alkaline treatment, bleaching, and hydrolysis without TEMPO-mediated oxidation. The effects of acid concentration on nanocellulose properties were studied and the maximum yield was achieved using sulphuric acid with a concentration of 60%(v/v). The extracted microalgae nanocellulose was incorporated into carboxymethyl cellulose/sodium alginate beads, significantly increasing methylene blue adsorption capacity and achieving a high dye removal percentage.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Dayra Suarez-Martinez, Edgardo Angulo-Mercado, Ivan Mercado-Martinez, Victor Vacca-Jimeno, Claudia Tapia-Larios, Nestor Cubillan
Summary: This study explores the potential use of Chlorella sp. biomass for the removal of tetracycline from highly concentrated aqueous media. The results show that the lipid-extracted biomass has a stronger removal capacity compared to the non-living biomass, and the adsorption kinetics and isotherms indicate a chemisorption mechanism. This suggests that the Chlorella sp. biomass after lipid extraction is a promising material for tetracycline removal, and the use of this residue contributes to a zero-waste strategy.
Article
Environmental Sciences
Aigars Lavrinovics, Linda Mezule, Pavels Cacivkins, Talis Juhna
Summary: This study investigated the optimal initial conditions for the growth, phosphate removal, polyphosphate accumulation, and protein productivity of Chlorella vulgaris. Results showed that a 10-day period of phosphate deficiency, accompanied by low initial biomass concentration, significantly increased phosphate removal, polyphosphate accumulation, and protein productivity. The optimization model suggested that one-day biomass P-starvation with low initial biomass concentration was the most effective combination. These findings provide insights into using microalgae exposure to phosphorus stress for rapid phosphorus removal in wastewater treatment.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Agricultural Engineering
Gabriela F. Ferreira, Luisa F. Rios Pinto, Rubens Maciel Filho, Leonardo V. Fregolente
Summary: This study aimed to cultivate Chlorella vulgaris and Desmodesmus sp. using sugarcane biorefinery residues bagasse and vinasse, exploring the effects of varying growth conditions. The results showed that under specific conditions, high cell density and specific metabolite accumulation can be achieved.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Naitao Hu, Yinfeng Xu, Chen Sun, Lianwen Zhu, Shiqing Sun, Yongjun Zhao, Changwei Hu
Summary: This study found that the microalgae Chlorella sp. has good potential for removing atrazine, but the degradation products may inhibit its growth and removal capability. Photosynthetic parameters, especially performance index (PIABS), clearly showed differences between treatments.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Engineering, Environmental
Seyedeh Zeinab Ayatollahi, Fereidun Esmaeilzadeh, Dariush Mowla
Summary: This study demonstrates that Chlorella vulgaris can effectively remove nutrients and CO2, with high growth rates and high-quality biodiesel production.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Agricultural Engineering
Chi Li, Jing-Han Wang, Chong Yu, Jing-Tian Zhang, Zhan-You Chi, Qian Zhang
Summary: Supplementing low dosage phytohormones in an improved capillary-driven attached cultivation device can solve the issues of slow growth, biomass harvest, and phytohormone costs in low strength wastewater microalgae cultivation.
BIORESOURCE TECHNOLOGY
(2022)
Article
Energy & Fuels
B. Namitha, Asha Sathish, P. Senthil Kumar, K. Nithya, Shyam Sundar
Summary: This study compared the performance of Monoraphidium sp. and Chlorella sorokiniana in the energy conversion process, finding that Chlorella sorokiniana has higher yield and more favorable fatty acid profile. The use of biodiesel showed high lipid recovery and lower CO and HC emissions, but slightly higher nitrogen oxides and carbon dioxide emissions.
Article
Environmental Sciences
Etiele G. De Morais, Ana M. Murillo, Piet N. L. Lens, Ivet Ferrer, Enrica Uggetti
Summary: Selenium is an important element for many living organisms, but high concentrations can harm the environment. This study found that Chlorella vulgaris and Scenedesmus sp. grown in urban wastewater with different selenium concentrations can effectively remove selenium.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Green & Sustainable Science & Technology
Rickelmi Agueero-Quinones, Zairi avila-Sanchez, Segundo Rojas-Flores, Luis Cabanillas-Chirinos, Magaly De La Cruz-Noriega, Jose Cruz-Monzon, Renny Nazario-Naveda
Summary: The increasing generation of wastewater with high levels of pollutants has become a serious environmental challenge. Sustainable technologies are required to efficiently treat wastewater. This study evaluated the effect of Chlorella sp. biomass on the removal of cadmium and chemical oxygen demand (COD) from municipal wastewater and the generation of electric power through microbial fuel cells. The results showed that Chlorella sp. effectively reduced the concentrations of cadmium and COD under specific conditions.
Article
Agricultural Engineering
Yinping Xiang, Meiying Jia, Rui Xu, Jialu Xu, Lele He, Haihao Peng, Weimin Sun, Dongbo Wang, Weiping Xiong, Zhaohui Yang
Summary: This study investigated the impact of the non-antibiotic pharmaceutical carbamazepine on antibiotic resistance genes (ARGs) during anaerobic digestion. The results showed that carbamazepine induced the enrichment of ARGs and increased the abundance of bacteria carrying these genes. It also facilitated microbial aggregation and intercellular communication, leading to an increased frequency of ARGs transmission. Moreover, carbamazepine promoted the acquisition of ARGs by pathogens and elevated their overall abundance.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Weixin Zhao, Tianyi Hu, Hao Ma, Dan Li, Qingliang Zhao, Junqiu Jiang, Liangliang Wei
Summary: This review summarizes the effects and potential mechanisms of biochar on microbial behavior in AD systems. The addition of biochar has been found to promote microbial colonization, alleviate stress, provide nutrients, and enhance enzyme activity. Future research directions include targeted design of biochar, in-depth study of microbial mechanisms, and improved models.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Christina Karmann, Anna Magrova, Pavel Jenicek, Jan Bartacek, Vojtech Kouba
Summary: This review assesses nitrogen removal technologies in reject water treatment, highlighting the differences in environmental impacts and economic benefits. Partial nitritation-anammox shows potential for economic benefits and positive environmental outcomes when operated and controlled properly.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Wei-Hao Huang, Ying-Ju Chang, Duu-Jong Lee
Summary: This study modified pinecone biochar with layered double hydroxide (LDH) to enhance its adsorption capacity for heavy metal and phosphate ions. The LDH-biochar showed significantly improved adsorption capacities for Pb2+ and phosphate, and a slight increase for Cu2+ and Co2+. The LDH layer enhanced the adsorption through various mechanisms.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Chao Song, Fanfan Cai, Shuang Yang, Ligong Wang, Guangqing Liu, Chang Chen
Summary: This paper developed a machine learning model to predict the biochemical methane potential during anaerobic digestion. Model analysis identified lignin content, organic loading, and nitrogen content as key attributes for methane production prediction. For feedstocks with high cellulose content, early methane production is lower but can be improved by prolonging digestion time. Moreover, lignin content exceeding a certain value significantly inhibits methane production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sang Min Lee, Ju Young Lee, Ji-Sook Hahn, Seung-Ho Baek
Summary: This study successfully developed an efficient platform strain using Yarrowia lipolytica for the bioconversion of renewable resources into adipic acid, achieving a remarkable increase in production level.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sefkan Kendir, Matthias Franzreb
Summary: This study presents a novel approach using magnetic separation to efficiently harvest freshwater microalgae, Chlorella vulgaris. By combining pH-induced calcium phosphate precipitation with cheap natural magnetite microparticles, harvesting efficiencies up to 98% were achieved in the model medium.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Ishaq Kariim, Ji-Yeon Park, Wajahat Waheed Kazmi, Hulda Swai, In-Gu Lee, Thomas Kivevele
Summary: The impact of reaction temperature, residence time, and ethanol: acetone on the energy compositions and yield enhancement of biocrudes was investigated. The results showed that under appropriate conditions, biocrudes with high energy and low oxygen content can be obtained, indicating a high potential for utilization.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xiyue Zhang, Xiyao Li, Liang Zhang, Yongzhen Peng
Summary: Intermittent aeration is an innovative approach to enhance nitrogen removal in low carbon-to-nitrogen ratio municipal sewage, providing an efficient strategy for the continuous plug-flow AOA process.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xu Yang, Mahmoud Mazarji, Mengtong Li, Aohua Li, Ronghua Li, Zengqiang Zhang, Junting Pan
Summary: This study investigated the impact of magnetite on the nitrogen cycle of pig manure biostabilisation. The addition of magnetite increased N2O emissions and decreased NH3 emissions during composting. It also increased the total nitrogen content but should be considered for its significant increase in N2O emissions in engineering practice.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Ty Shitanaka, Haylee Fujioka, Muzammil Khan, Manpreet Kaur, Zhi-Yan Du, Samir Kumar Khanal
Summary: The market value of microalgae has exponentially increased in the past two decades, thanks to their applications in various industries. However, the supply of high-value microalgal bioproducts is limited due to several factors, and strategies are being explored to overcome these limitations and improve microalgae production, thus increasing the availability of algal-derived bioproducts in the market.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Martin Kerner, Thorsten Wolff, Torsten Brinkmann
Summary: The efficiency of using enriched CO2 from flue gas for large-scale production of green microalgae has been studied. The results show that the use of membrane devices and static mixers can effectively improve the CO2 recovery rate and maintain the suitable pH and temperature during cultivation, achieving a more economical and sustainable microalgae production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rui Ma, Ji Li, Rd Tyagi, Xiaolei Zhang
Summary: This review summarizes the microorganisms capable of using CO2 and CH4 to produce PHAs, illustrating the production process, factors influencing it, and discussing optimization techniques. It identifies the challenges and future prospects for developing economically viable PHAs production using GHGs as a carbon source.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Bing Wang, Peng Zhang, Xu Guo, Xu Bao, Junjie Tian, Guomin Li, Jian Zhang
Summary: The addition of zeolite in the co-composting of chicken manure and straw significantly reduced the emissions of ammonia and N2O, and increased the nitrate content. Zeolite also promoted the abundance of nitrification genes and inhibited the expression of denitrification genes.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rohit Dey, Franziska Ortiz Tena, Song Wang, Josef Martin Messmann, Christian Steinweg, Claudia Thomsen, Clemens Posten, Stefan Leu, Matthias S. Ullrich, Laurenz Thomsen
Summary: This study investigated the operation of a 1000L microalgae-based membrane photobioreactor system for continuous secondary wastewater treatment. The research focused on a green microalgae strain called Desmodesmus sp. The study aimed to understand key trends and optimization strategies by conducting experiments in both summer and winter seasons. The findings showed that maintaining low cell concentrations during periods of light inhibition was beneficial for nutrient uptake rates. Effective strategies for enhancing algae-based wastewater treatment included cell mass recycling and adjusting dilution rates based on light availability.
BIORESOURCE TECHNOLOGY
(2024)