Article
Engineering, Environmental
Siwei Gu, Christopher Q. Lan
Summary: The effects of metal ion properties and the cell wall structure of green alga Neochloris oleoabundans on five selected heavy metal ions were investigated. Pb(II) showed the strongest inhibitive effects on the adsorption of other metal ions, followed by Cu(II). The adsorption capacity of N. oleoabundans biomass to the tested two-valence metal ions is proportional to the electronegativity and inversely proportional to the radius of the metal ions.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Applied
Ruiyun Chen, Ian Ratcliffe, Peter A. Williams, Shunjing Luo, Jun Chen, Chengmei Liu
Summary: Pectin extracted from the fruit seeds of the creeping fig plant forms a viscous solution at pH 4.5 and strong gels when the pH is decreased by glucono-delta lactone. The rate of gelation significantly increases with pH reduction, and the addition of salts promotes gel formation.
FOOD HYDROCOLLOIDS
(2021)
Article
Agricultural Engineering
Liping Tan, Yongchao Zhang, Weihua Zhang, Rongwen Zhao, Yue Ru, Tongjun Liu
Summary: This study presents a new method for the fabrication of lignin-based magnetic biosorbent (LMB) for efficient removal of heavy metal ions from wastewater. The LMB exhibited high adsorption capacity for Pb2+ and Cu2+ ions, with fast equilibrium achieved within 30 minutes. This research provides a promising approach for lignin valorization in lignocellulose biorefineries and the development of cost-efficient and environmentally friendly adsorbents for wastewater treatment.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Environmental Sciences
Ying-Ying Huang, Ge Fei, Sha-Li Yu, Yi-Fei Liu, Hui-Ling Fu, Qiong Liao, Bai-Fei Huang, Xue-Yang Liu, Jun-Liang Xin, Chuang Shen
Summary: Boron supplementation alleviated Cd toxicity and reduced Cd accumulation in rice seedlings by enhancing Cd tolerance and chelation ability, thereby limiting Cd uptake and translocation.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Engineering, Environmental
Lang Gong, Hongye Wu, Xiangyi Shan, Zhili Li
Summary: The development of low-cost, high-efficiency, and environmentally friendly adsorbents for the removal of antibiotics and heavy metal ions in water is urgently needed. Phosphorylated alkali lignin (PAL) microparticles were successfully fabricated via a simple one-pot method, showing great potential in adsorption of pollutants such as levofloxacin hydrochloride (LH) and lead ions (Pb(II)). The results demonstrated that PAL had a strong ability to remove complex pollutants, with high adsorption capacity and removal percentage for various contaminants in water.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Polymer Science
Alina-Roxana Lucaci, Dumitru Bulgariu, Laura Bulgariu
Summary: In this study, alginate extracted from marine algae biomass was used to functionalize iron oxide particles, resulting in the preparation of a new biosorbent. The obtained Alg-Fe3O4-MPs showed high biosorption capacity for Cu(II), Co(II) and Zn(II) ions. The Langmuir model was found to be the best fitted model for the equilibrium data, and biosorption kinetics followed the pseudo-second order model.
Article
Chemistry, Applied
Alireza Chackoshian Khorasani, Fatemeh Kouhfar, Seyed Abbas Shojaosadati
Summary: PLCN, a novel biosorbent, was synthesized for efficient adsorption of cholesterol and bile salts, showing potential applications in medicine and food industry. After enzymatic digestion, PLCN formed a porous structure with high adsorption capacity.
CARBOHYDRATE POLYMERS
(2021)
Article
Chemistry, Physical
Syed Muhammad Salman, Muhammad Zahoor, Durre Shahwar, Amara Nisar, Asad Ali, Hizbullah Khan, Farman Ali
Summary: The chemically modified Quercus dilatata leaves (CMQDL) showed high biosorption capacities for Pb (II), Cd (II), and Cr (VI) ions removal from water. Freundlich isotherm model best evaluated the equilibrium data with high regression correlation coefficient values. Thermodynamics functions revealed the feasibility, exothermic and spontaneous nature of Pb (II) ion removal via CMQDL, while Cd (II) and Cr (VI) removal showed different characteristics.
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS
(2021)
Article
Environmental Sciences
HongLei Jia, XiaoHong Wang, Ting Wei, Min Wang, Xun Liu, Li Hua, XinHao Ren, JunKang Guo, Jisheng Li
Summary: The study showed that pre-treatment with salicylic acid significantly reduced cadmium accumulation in tomato plants and altered cadmium distribution. Salicylic acid induced the composition of the cell wall, increasing cellulose, hemicellulose, pectin, and lignin content, and up-regulated the expression of lignin and cellulose synthase genes while down-regulating pectin methylesterase related genes. Additionally, salicylic acid decreased pectin methylesterase activity to reduce cadmium accumulation in the cell wall and change cadmium partition ratio.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Food Science & Technology
Yu Chen, Cancan Zhu, Yuqiang Zhao, Shijie Zhang, Wu Wang
Summary: In this study, the authors investigated the mechanisms involved in chestnut calcification during postharvest storage. They measured various physicochemical parameters and performed transcriptome analysis on chestnut seeds. The results showed that the moisture content and accumulation of cell wall materials were correlated with the degree of calcification. Transcriptome analysis revealed differentially expressed genes related to water, water deprivation, and salt stress. Kyoto Encyclopedia of Genes and Genomes pathways related to chestnut calcification were also identified. The findings provided new insights into the calcification process and laid a foundation for further preservation of chestnuts.
Article
Chemistry, Physical
Laura Bulgariu, Daniela Ionela Fertu, Irina Gabriela Cara, Maria Gavrilescu
Summary: In this study, soy waste biomass was treated to obtain a biosorbent (Na-SW) for the removal of Pb(II), Cd(II), and Zn(II) ions. The biosorbent showed high reusability and efficiency in removing heavy metal ions from aqueous media, indicating its potential for large-scale wastewater treatment.
Article
Environmental Sciences
Govindan Rajivgandhi, Govindan Ramachandran, Gnanasekaran Chackaravarthi, Muthuchamy Maruthupandy, Franck Quero, Chenthis Kanisha Chelliah, Natesan Manoharan, Naiyf S. Alharbi, Shine Kadaikunnan, Jamal M. Khaled, Wen-Jun Li
Summary: This study explores the biosorption potential ability of metal tolerant Bacillus cereus in an environment rich in Pb and Cu, and the results show that B. cereus can actively adsorb metal ions. Therefore, effective wastewater treatment methods are recommended.
Article
Engineering, Environmental
Gao-Jie Jiao, Jiliang Ma, Yancong Li, Dongnv Jin, Jinghui Zhou, Runcang Sun
Summary: The novel sulfomethylated lignin-grafted-polyacrylic acid (SL-g-PAA) hydrogel was fabricated for efficient removal of heavy metal ions from wastewater, and successfully reused for chemiluminescence. The hydrogel showed high content of lignin and exhibited efficient removal of various metal ions, while the spent hydrogel was reused to develop a new CL system with high intensity and long duration time. The combination of facile fabrication process, renewable raw materials, and ingenious strategy for successive application in adsorption and CL suggest great potential for application in wastewater treatment, biological imaging, and cold light sources.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Metallurgy & Metallurgical Engineering
Robert Barthen, Mira L. K. Sulonen, Sirpa Peraniemi, Rohan Jain, Aino-Maija Lakaniemi
Summary: The study investigated the feasibility of using waste digested activated sludge as a biosorbent for selective metal recovery from complex mine water. A strong selectivity was observed in the recovery step using 1M Na2CO3 solution. The one-step removal and two-step recovery approach enabled high recovery of U, Cu, and Th from the mine water.
Article
Environmental Sciences
Manjeet Bansal, Rajni Garg, V. K. Garg, Rishav Garg, Diwan Singh
Summary: The presence of multiple metals in industrial effluents can influence the removal of each metal during adsorptive treatment. This study reveals an antagonistic effect on the removal of a particular metal ion if other metal ions are present in the effluent. Although a higher concentration of one metal ion increases its removal, the presence of other ions affects the uptake of individual ions.
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)