Article
Chemistry, Analytical
Iara Fontes Demuner, Fernando Jose Borges Gomes, Marcela Ribeiro Coura, Jessica Silva Gomes, Antonio Jacinto Demuner, Ana Marcia Macedo Ladeira Carvalho, Claudio Mudadu Silva
Summary: This study evaluates the effect of thermal treatment on the chemical composition of extracted kraft lignin from eucalypt kraft black liquor. The thermal treatment increased demethylation and demethoxylation on the eucalypt kraft lignin, resulting in a reduction in soluble lignin, oxygen and hydrogen content, and an increase in insoluble lignin and carbon content. The heat-treated lignin showed a reduction in the S/G ratio and an increase in catechol and methoxycatechol content, making it more reactive and suitable for high value-added lignin-based products.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Biochemistry & Molecular Biology
Sangwoo Park, Jungkyu Kim, June-Ho Choi, Jong-Chan Kim, Jonghwa Kim, Youngmin Cho, Seungoh Jung, Hyo Won Kwak, In-Gyu Choi
Summary: Acetylated lignin, as an additive for biocomposites, improves compatibility with plastic polymers. The addition of acetylated lignin effectively delays the degradation rate of PLA-based biocomposites in a thermophilic composting environment.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Biochemistry & Molecular Biology
Amanda de S. M. de Freitas, Jessica S. Rodrigues, Cristiane C. Maciel, Ariane A. F. Pires, Ana Paula Lemes, Marystela Ferreira, Vagner R. Botaro
Summary: Thermoplastic starch (TPS) is a biopolymer widely studied as an alternative to conventional polymers. The incorporation of Kraft Lignin (KL) as a filler in TPS films has been found to improve mechanical and thermal properties, reduce costs, and achieve promising results in various tests. The addition of 4% KL has shown to be the most effective in enhancing the properties of TPS films.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Materials Science, Paper & Wood
Justin Alfred Pe III, Ji Sun Mun, Sung Phil Mun
Summary: The thermal characterization of kraft lignin (KL) prepared from mixed hardwoods was compared with milled wood lignin (MWL) from acacia and mixed hardwoods. KL exhibited higher thermal and thermo-oxidative stability than MWLs. The composition of syringyl/guaiacyl/p-hydroxyphenyl in KL was 48:44:8 (S/G ratio 1.07), while MWL-aca and MWL-mhw had ratios of 31:60:9 and 46:48:6, respectively.
Article
Biochemistry & Molecular Biology
Weihua Qiu, Jinru Liu
Summary: This paper investigates the degradation performance of Coriolopsis trogii on enzymatic hydrolysis lignin (EHL) and Kraft lignin (KL), and finds that EHL can effectively promote the cell growth and ligninolytic enzyme secretion of C. trogii TS01, while KL significantly inhibits its growth and enzyme secretion.
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
(2022)
Article
Agricultural Engineering
Saddam Hussain Mohammad, Bhima Bhukya
Summary: This study successfully utilized Pseudomonas putida KT2440 to valorize lignin and its derivatives, and synthesized bio-polymers without any genetic manipulation.
BIORESOURCE TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Kazuhiro Shikinaka, Yuichiro Otsuka
Summary: This study presents a practical method for whitening lignin derivatives by solvent-controlled encapsulation (SCE) to rearrange the chromosphere at the solvent/lignin interface. The method involves mixing solvents to adjust polarity and modifying the hydroxy group to produce whitened lignin nanoparticles. The results demonstrate the potential of lignin as whitened polymers with high design flexibility and material functionality.
Article
Microbiology
Shunyao Li, Kai Sun, Xin Yan, Chao Lu, Michael Gatheru Waigi, Juan Liu, Wanting Ling
Summary: Novosphingobium sp. ES2-1 is an efficient bacterium in degrading E2, with EstP and EstO two monooxygenase systems catalyzing the oxidation of E1 and 4-OH-E1 for further degradation.
ENVIRONMENTAL MICROBIOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Selvakumar Sakthivel, Anand Raj Dhanapal, Radha Palaniswamy, Soundarya Dhandapani, Mathur Nadarajan Kathiravan
Summary: This study identified a novel bacterial species isolated from pesticide-contaminated soil that enhances endosulfan degradation. The optimal conditions for biodegradation were determined, and it was found that endosulfan acted as the primary carbon source for bacterial growth. The bacterial isolate Pseudomonas sp. MSCAS BT01 showed promising potential for bioremediation of endosulfan-contaminated environments.
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
(2022)
Review
Chemistry, Multidisciplinary
Dimitris D. S. Argyropoulos, Claudia Crestini, Christian Dahlstrand, Erik Furusjo, Claudio Gioia, Kerstin Jedvert, Gunnar Henriksson, Christian Hulteberg, Martin Lawoko, Clara Pierrou, Joseph S. M. Samec, Elena Subbotina, Henrik Wallmo, Martin Wimby
Summary: Kraft lignin, a by-product of pulp production, can be separated from black liquor to reduce the load on recovery boilers and increase pulp production, while also generating valuable bioenergy. In recent years, there has been growing interest in developing and utilizing this underutilized resource. This review provides an overview of Kraft lignin, its applications, and evaluates its value chains from black liquor to different products. It is anticipated that this work will inspire further development and use of Kraft lignin for new applications, promoting global sustainability concerns.
Article
Agricultural Engineering
Rajesh Kona, Pavankumar Pallerla, Ramunaidu Addipilli, Prabhakar Sripadi, S. Venkata Mohan
Summary: The study evaluated the biosynthesis of lutein and beta-carotene by Scenedesmus sp. SVMIICT1 under different light intensities, finding that high lutein content was observed at 50 and 500 mu E/m(2)/s conditions. The study also showed that light intensities altered photosystem II and photosystem I in the algae.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Patricia Figueiredo, Maarit H. Lahtinen, Melissa B. Agustin, Danila Morais Carvalho, Sami-Pekka Hirvonen, Paavo A. Penttila, Kirsi S. Mikkonen
Summary: The study found that the acetone/water (3:1) method is the most effective approach for preparing uniform, small, and spherical LNPs from three different technical lignins. These LNPs show improved stability at different ionic strengths and pH ranges, making them suitable for various applications in pharmaceutical and food sciences.
Article
Polymer Science
Sergey Pokryshkin, Yuliya Sypalova, Artem Ivahnov, Aleksandr Kozhevnikov
Summary: This study investigates the influence of sample weight, thermal decomposition temperature, and duration on lignin structural unit quantification using different thermal decomposition modes, and establishes the optimal process conditions. The thermal desorption-GC/MS and pyrolysis-GC/MS methods are studied, and the applicability of the proposed approaches to hardwood lignins close to native is validated by comparison with HSQC NMR.
Article
Biology
Abdul Fattah Shaima, Nazlina Haiza Mohd Yasin, Nazlina Ibrahim, Mohd Sobri Takriff, Darvien Gunasekaran, Mahmud Y. Y. Ismaeel
Summary: Microalgae are promising sources of bioactive compounds for various applications. In this study, the antimicrobial properties and bioactive compounds of local microalgae were investigated. Chlorella sp. UKM8 methanol extract showed the highest antibacterial activity and contained phenol, hexadecanoic acid, phytol, and other compounds known for their antimicrobial activity. Further studies are needed to purify and understand the mechanism of these compounds.
SAUDI JOURNAL OF BIOLOGICAL SCIENCES
(2022)
Article
Energy & Fuels
Bingyue Tang, Wenzhi Li, Xia Zhang, Baikai Zhang, Hao Zhang, Cunshuo Li
Summary: Via controlled oxidation, MoO3 with oxygen vacancies was synthesized and employed as a catalyst for the depolymerization of Kraft lignin in a new solvent system without external hydrogen gas. The optimized catalyst and hydrogen-donor solvent system resulted in high yield of soluble products and increased heating value of liquid fuels.
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)