Article
Materials Science, Paper & Wood
Thabisile Brightwell Jele, Bruce Sithole, Prabashni Lekha, Jerome Andrew
Summary: Three different pulp and paper mill sludge samples from South African mills were characterized to determine their suitability for various beneficiation pathways. The characteristics of the sludge varied depending on the pulping technique, raw material, and effluent treatment used. From the analysis, it was found that different beneficiation pathways were more suitable for each type of sludge based on their specific characteristics.
Article
Green & Sustainable Science & Technology
Shule Wang, Yuming Wen, Henry Hammarstrom, Par Goran Jonsson, Weihong Yang
Summary: The study found that the hydrothermal carbonization of paper mill sludge (PPMS) resulted in a higher average activation energy for pyrolysis, and the concentration of monocyclic aromatic hydrocarbons in the organic liquid fraction increased with the pyrolysis temperature. The highest yield and highest heating value of the organic liquid fraction were achieved at 550 degrees Celsius, and the pyrolytic chars showed potential for use as a carbon sink.
Article
Environmental Sciences
Zhang Jian, Pan Yuan-Fang, Wu Wan-Li, Wu Qin, Xie Gong-Nan, Lin Hong-Fei, Xie Tian, Wang Shuang-Fei
Summary: The study found that using black liquor instead of NaOH for the thermo-chemical pretreatment process can increase methane production and reduce treatment costs, making it economically feasible. However, adding black liquor can increase background chemical oxygen demand and volatile fatty acid concentration.
Review
Environmental Sciences
Tomi Turner, Rebecca Wheeler, Ian W. Oliver
Summary: Over 400 million tonnes of board and paper are produced globally each year, generating 4.3-40 kg of sludge-like material, known as pulp and paper mill sludge (PPMS), per tonne of product. PPMS, with its high organic content and low toxicity, is being increasingly used as a soil amendment in agriculture. This review explores the benefits, potential impacts, and viability of land spreading PPMS, suggesting that risks can be mitigated and that the practice is environmentally responsible. However, further research is needed to assess long-term implications and the presence of emerging contaminants.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Economics
Andres Susaeta, Fabricia Gladys Rossato
Summary: The study found that Brazilian pulp and paper companies are efficient in pulp and bioelectricity production, with potential for further improvement by increasing forest area, power capacity, and outsourced employment. Higher socioeconomic levels may not have a statistically significant impact on the efficiency of production.
FOREST POLICY AND ECONOMICS
(2021)
Article
Biotechnology & Applied Microbiology
Agata Olszewska-Widdrat, Charilaos Xiros, Anders Wallenius, Roland Schneider, Lais Portugal Rios da Costa Pereira, Joachim Venus
Summary: This work demonstrates the microbial production of lactic acid and succinic acid, two platform chemicals, from a non-expensive side stream of pulp and paper industry, proposing a sustainable way to valorize it towards economically important monomers for bioplastics formation. The highest yield and productivities for lactic and succinic acid production were achieved at 0.99 g.g(-1) and 3.75 g.L-1.h(-1), and 0.77 g.g(-1) and 1.16 g.L-1.h(-1), respectively.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Engineering, Environmental
Mauricio C. Matheus, Maria Ekenberg, Joao P. Bassin, Marcia W. C. Dezotti, Maria Piculell
Summary: The study found that higher hydraulic retention times and appropriate filling ratios can enhance the performance of MBBR. Under nutrient-limited conditions, MBBR can more effectively remove COD and utilize nutrients.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Environmental Sciences
Jingjing Hu, Yansong Bao, Jian Liu, Hui Liu, George P. Petropoulos, Petros Katsafados, Liuhua Zhu, Xi Cai
Summary: This study proposed a new technique based on Neural Network algorithm to retrieve real-time temperature and relative humidity parameters in the Arctic region from Fengyun-3D HIRAS observations. The NN retrievals accuracy is generally higher in warm season and ocean, and consistent with ERA5 data and radiosonde observations.
Article
Chemistry, Multidisciplinary
Fengxiao Zhao, Rui Shan, Wenjian Li, Yuyuan Zhang, Haoran Yuan, Yong Chen
Summary: This study investigated the use of pulp sludge-derived biochar modified with ZnCl(2) for the removal of methylene blue from aqueous solution. The results showed promising adsorption performance and potential for efficient wastewater treatment. Kinetic and thermodynamic analyses revealed that the adsorption process followed the Freundlich isotherm model and the pseudo-second-order kinetic model.
Article
Agricultural Engineering
Anna Hamalainen, Marika Kokko, Viljami Kinnunen, Tuomo Hilli, Jukka Rintala
Summary: Hydrothermal carbonization (HTC) can convert mixed sludge from the pulp and paper industry into value-added products, facilitating energy, carbon, and nutrient recovery.
BIORESOURCE TECHNOLOGY
(2022)
Article
Energy & Fuels
Piyanut Phuthongkhao, Kitanchalee Phasin, Purita Boonma, Rattabal Khunphonoi, Ekkachai Kanchanatip, Totsaporn Suwannaruang, Harikaranahalli Puttaiah Shivaraju, Kitirote Wantala
Summary: The successful conversion of paper sludge waste to carbonaceous hydrochar was demonstrated through hydrothermal carbonization under controlled conditions. The hydrochar produced at higher temperatures and for a longer time showed excellent fuel characteristics with steadily increased carbon content and high heating value. This research has potential sustainable and broader applications in the fields of energy, agriculture, and waste treatment.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Environmental Sciences
Chun-Yun Du, Wei Wang, Na Wang, Shu-Feng Pang, Yun-Hong Zhang
Summary: The chemical compositions in atmospheric aerosols evolve with pH and relative humidity, impacting reaction pathways and kinetics. Lower pH and higher relative humidity lead to changes in chemical reactions, providing insight into the evolution of aerosol composition. These findings contribute to a better understanding of the connection between chemistry and climate.
Article
Environmental Sciences
Baowei Zhao, Juanxiang Zhang
Summary: The use of biochar-based catalysts in persulfate activation shows promise in removing emerging and refractory pollutants in wastewater. The effectiveness of biochars derived from waste pulp/paper mill sludge in activating peroxydisulfate for tetracycline degradation was investigated. The results demonstrate that the removal efficiencies of tetracycline increased with the pyrolysis temperatures of the biochars, suggesting that the biochars could be an effective treatment technique for wastewater containing antibiotics.
Review
Materials Science, Paper & Wood
Martin A. Hubbe
Summary: The pulp and paper industry is highly energy-intensive, with much of the cellulosic material used for manufacturing being incinerated to create needed steam and electricity. Efficiency can be improved by minimizing energy losses and following established best practices. By reducing exergy losses and moving closer to ideal performance, energy savings can be achieved.
Article
Construction & Building Technology
S. Praburanganathan, N. Sudharsan, Yeddula Bharath Simha Reddy, Chukka Naga Dheeraj Kumar Reddy, L. Natrayan, Prabhu Paramasivam
Summary: This study examines the feasibility of using discarded paper in concrete, and presents the results of a physiomechanical study. The optimal replacement percentage of waste paper for cement is found to be 5%, which improves the compressive strength by 30% at the age of 28 days. The addition of glass fibers significantly enhances the split and flexural strength of the concrete specimens.
ADVANCES IN CIVIL ENGINEERING
(2022)
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)