Article
Agronomy
Leila Chaari, Norah Salem Alsaiari, Abdelfattah Amari, Faouzi Ben Rebah, Monem Kallel, Tahar Mechichi
Summary: Olive manufacturing generates highly polluting wastewater, and various treatments and valorization processes have been investigated by olive-oil-producing countries to manage this waste. In Tunisia, the government has adopted the spreading of olive mill wastewater (OMW) on soil to improve organic matter content in olive grove soil. The study found that this practice leads to positive physicochemical changes in the soil and could be a solution for managing OMW.
Article
Chemistry, Physical
Abeer Al Bawab, Muna Abu-Dalo, Aya Khalaf, Duaa Abu-Dalo
Summary: A new series of nanophotocatalysts and doped systems were prepared and characterized for the photocatalytic degradation of olive mill wastewater, showing that materials doped with Mn exhibited higher photocatalytic degradation efficiency.
Article
Environmental Sciences
Tawfik El Moussaoui
Summary: Olive mill wastewater is a severe environmental problem in Mediterranean producer countries. This study provides a comprehensive analysis of activated sludge biomass and crucial process parameters in the treatment of olive mill wastewater. The results show that increasing the mass ratio of olive mill wastewater can improve the treatment efficiency of the activated sludge system, after an acclimation step.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Food Science & Technology
Bruno Nicolau Paulino, Adones Sales, Lorena Felipe, Glaucia Maria Pastore, Gustavo Molina, Juliano Lemos Bicas
Summary: Aroma is a crucial attribute of food directly impacting consumer acceptance. In recent decades, interest in biotechnologically produced aroma compounds has grown as a sustainable way to provide natural additives for the food industry. Recent advances in microbial and enzymatic production of aroma compounds demonstrate their high potential for commercial applications.
CURRENT OPINION IN FOOD SCIENCE
(2021)
Article
Engineering, Environmental
Bruno M. Esteves, Sergio Morales-Torres, Francisco J. Maldonado-Hodar, Luis M. Madeira
Summary: Iron oxide catalysts supported on activated carbon prepared from olive stones show high efficiency in the degradation of refractory polyphenolic solutions and olive mill wastewater, achieving high removal and mineralization rates, and reducing the eco-toxicity of the wastewater.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Bruno M. Esteves, Rita Fernandes, Sergio Morales-Torres, Francisco J. Maldonado-Hodar, Adrian M. T. Silva, Luis M. Madeira
Summary: The integration of catalytic wet peroxidation (CWPO) and direct contact membrane distillation (DCMD) was used to study the degradation of organic matter and the recovery of water in olive mill wastewater (OMW). The results showed that CWPO-treated OMW samples allowed for higher fluxes in the DCMD unit and showed higher rejections of organic matter from the feed solution. Treated OMW samples also met the legislated thresholds required for direct discharge for crops irrigation.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Bruno M. Esteves, Sergio Morales-Torres, F. J. Maldonado-Hodar, Luis M. Madeira
Summary: By transforming the by-product of olive mill's operation into activated carbon and using it as support for Fe-based catalysts, effective catalytic performance was achieved in the treatment of OMW wastewater.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Gunay Ozbay, Nadir Ayrilmis, Muhammad Syarhabil Ahmad
Summary: Olive oil mill wastewater (OMW), a by-product of the olive oil industry, is causing massive environmental problems when not properly disposed of. In this experimental study, OMW was used as a substitute for clean water in the production of formaldehyde solution. The effect of OMW substitution on the properties of phenol-formaldehyde (PF) resin was analyzed using FT-IR and TGA techniques.
ENVIRONMENTAL SCIENCES EUROPE
(2023)
Article
Energy & Fuels
Bruna Dias, Marlene Lopes, Renata Ramoa, Ana S. Pereira, Isabel Belo
Summary: The study found that Candida tropicalis has the ability to degrade organic load and phenolic compounds in olive mill wastewater and produce valuable compounds such as lipase and protease. This process has the potential to serve as an alternative approach to conventional methods for treating olive mill wastewater.
Article
Agronomy
Giuseppe Bombino, Serafina Andiloro, Adele Folino, Manuel Esteban Lucas-Borja, Demetrio Antonio Zema
Summary: Land spreading of olive mill wastewater can lead to a slight increase in soil water repellency in the short term, but this effect diminishes after two weeks, with the organic compounds in the wastewater playing a significant role in influencing soil water repellency. Overall, the practice of OMW land spreading did not significantly change soil water repellency, especially in loam or silty clay loam soil compared to sandy loam texture, and is more viable in spring or autumn to reduce the risk of groundwater contamination.
AGRICULTURAL WATER MANAGEMENT
(2021)
Article
Environmental Sciences
Soufiane Bakri Alaoui, Edvina Lamy, Mounia Achak
Summary: The current study aimed to treat olive mill wastewater (OMW) using a low-cost natural adsorbent in an infiltration percolation process. The results showed that diluting the OMW with domestic wastewater was the most effective, while lime pretreatment had the lowest removal rate for all parameters.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Abeer El Shahawy, Inas A. Ahmed, Mahmoud Nasr, Ahmed H. Ragab, Saedah R. Al-Mhyawi, Khalda M. A. Elamin
Summary: In this study, electrocoagulation was explored as an alternative method for treating Olive Mill Wastewater. Through Central Composite Experimental Design and Response Surface Methodology, the optimal conditions for COD removal were identified as current density of 15 mA/cm(2), pH of 4, and electrolysis time of 30 minutes. Under these conditions, the maximum COD removal ratio was 41% with an Al weight loss of 288.89 g/m(3).
Article
Environmental Sciences
Wissal Issaoui, Imen Hamdi Nasr, Semah Khaskhoussi, Mohamed Hedi Inoubli
Summary: Mediterranean countries are known for their significant contribution to olive oil production, which generates a large amount of olive mill wastewater (OMW). In Tunisia, uncontrolled OMW disposal sites cause environmental problems and pose risks to human health. This study focuses on the environmental characterization and evaluation of waste zones in the Sidi Bouzid region, Tunisia. The geophysical mapping (electrical resistivity tomography-ERT method) is used to monitor the subsurface infiltration of OMW. The results show that ERT is an efficient and powerful method to control and monitor the movement of contaminants in OMW disposal sites.
ENVIRONMENTAL EARTH SCIENCES
(2023)
Article
Energy & Fuels
Yaojia He, Kai Li, Guangxu Bo, Jianhua Wang, Li Xu, Jinyong Yan, Min Yang, Yunjun Yan
Summary: This study investigates the effect of adding a deep eutectic solvent on the yield of biodiesel catalyzed by liquid lipase 2. The results show that the addition of the deep eutectic solvent can improve the yield of biodiesel and enhance the reusability of the enzyme.
Article
Agronomy
Wissal Issaoui, Dimitrios D. Alexakis, Imen Hamdi Nasr, Athanasios V. Argyriou, Evangelos Alevizos, Nikos Papadopoulos, Mohamed Hedi Inoubli
Summary: This study aims to assess the effectiveness of satellite image analysis techniques in detecting Olive Mill Wastewater (OMW) disposal sites in Mediterranean countries. The study collected spectral signatures of OMW and applied various spectral vegetation indices and image processing methods, as well as different classification algorithms, to detect and monitor these sites. The results show that Sentinel-2 and PlanetScope images have high efficiency in detecting and monitoring OMW disposal areas under different morphological environments.
Article
Instruments & Instrumentation
Isabel Matos Oliveira, Cristiana Goncalves, Myeong Eun Shin, Sumi Lee, Rui L. Reis, Gilson Khang, Joaquim Miguel Oliveira
Summary: Rheumatoid arthritis is a chronic inflammatory disease characterized by joint inflammation and tissue destruction. Novel drug delivery system Ty-GG hydrogels were developed via HRP crosslinking, showing enhanced mechanical strength and promising therapeutic effects for RA treatment.
DRUG DELIVERY AND TRANSLATIONAL RESEARCH
(2021)
Article
Biotechnology & Applied Microbiology
Ana S. Pereira, Silvia M. Miranda, Marlene Lopes, Isabel Belo
Summary: The study found that Yarrowia lipolytica strains can efficiently utilize VFAs for growth, but lipids production can be enhanced by adding co-substrates; a two-stage batch culture can improve lipids accumulation, and it was demonstrated that oxygen mass transfer is crucial for lipids production by Y. lipolytica from VFAs.
JOURNAL OF BIOTECHNOLOGY
(2021)
Review
Biotechnology & Applied Microbiology
Marlene Lopes, Silvia M. Miranda, Ana R. Costa, Ana S. Pereira, Isabel Belo
Summary: Yarrowia lipolytica has the ability to produce valuable compounds from low-cost waste materials, sparking interest in the scientific community. This article provides a comprehensive overview of its application in waste utilization and aims to promote a circular economy.
CRITICAL REVIEWS IN BIOTECHNOLOGY
(2022)
Article
Agriculture, Multidisciplinary
Daniel Sousa, Jose M. Salgado, Maria Cambra-Lopez, Alberto C. P. Dias, Isabel Belo
Summary: The study showed that fungi could reduce fiber content and improve antioxidant capacity in vegetable oil by-products. Aspergillus niger demonstrated the highest activity of key enzymes and antioxidant potential, while Rhizopus oryzae produced the highest beta-glucosidase activity and released total phenolic content.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2022)
Article
Fisheries
Helena Fernandes, Carolina Castro, Diogo Filipe, Francisco Moyano, Patricia Ferreira, Aires Oliva-Teles, Isabel Belo, Helena Peres, Manuel Jose Salgado
Summary: This study evaluated the potential of a carbohydrases-rich extract produced from the fermentation of brewer's spent grain (BSG) to enhance the nutritional value of plant-based diets for European seabass juveniles. The results showed that the BSG extract did not affect the growth performance of the fish but increased feed efficiency and protein utilization. Pre-treating the plant feedstuffs with the BSG extract seemed to be more effective in improving protein utilization compared to directly adding it to the diet. This study demonstrated the feasibility of using BSG valorization through solid-state fermentation (SSF) to produce a functional additive for aquafeeds, contributing to resource sustainability and increasing the nutritional value of plant feedstuffs.
Article
Biotechnology & Applied Microbiology
Silvia Fernandes, Isabel Belo, Marlene Lopes
Summary: The study on Aureobasidium pullulans NCYC 4012 found that highest substrate uptake rate was observed at a glucose concentration of 80 g L-1 in flask batch cultures. In batch cultures of A. pullulans in stirred tank bioreactors, higher productivities were attained under high oxygen mass transfer conditions, with increased total pressure of 4 bar proving to be an effective oxygen supply method. The increased pressure induced intracellular antioxidant enzyme superoxide dismutase, while extracellular glucose oxidase activity was reduced under highly oxygenated conditions, indicating opposite effects of oxygen on enzyme secretion and GA production.
BIOCHEMICAL ENGINEERING JOURNAL
(2021)
Article
Biotechnology & Applied Microbiology
Ana S. Pereira, Marlene Lopes, Silvia M. Miranda, Isabel Belo
Summary: This study investigated the lipid accumulation by Yarrowia lipolytica from volatile fatty acids (VFAs) in a lab-scale stirred tank bioreactor. The results showed that the two-stage batch culture strategy (growth phase in glucose followed by a lipogenic phase in VFAs) resulted in the highest lipid content in the cells. The fuel properties of the biodiesel produced from Y. lipolytica lipids were comparable with those produced from vegetable oils and met international standards.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2022)
Article
Fisheries
H. Fernandes, C. Castro, D. Filipe, P. Ferreira, J. M. Salgado, F. Moyano, A. Oliva-Teles, I Belo, H. Peres
Summary: The effects of dietary supplementation with brewer's spent grain (BSG) extract on the oxidative status of the liver and intestine, as well as muscle lipid peroxidation (LPO) in European seabass, were investigated. The results showed that BSG extract supplementation increased antioxidant levels in the diet, improved intestinal antioxidant capacity, and reduced muscle LPO in the fish.
AQUACULTURE NUTRITION
(2022)
Article
Biotechnology & Applied Microbiology
Helena Fernandes, Jose Manuel Salgado, Marta Ferreira, Martina Vrsanska, Nelson Fernandes, Carolina Castro, Aires Oliva-Teles, Helena Peres, Isabel Belo
Summary: In this study, Brewer's spent grain (BSG) was fermented with Aspergillus ibericus to produce a crude extract rich in cellulase and xylanase. The fermented BSG showed increased protein content and reduced fiber content, making it a potential supplement in aquafeeds. The crude extract was also found to significantly improve feed and protein utilization in European seabass juveniles.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Daniel Sousa, Jose Manuel Salgado, Maria Cambra-Lopez, Alberto Dias, Isabel Belo
Summary: Bioprocessing of oilseed cakes through solid-state fermentation can enhance their applications in feed and other industries by improving nutritional properties and releasing bioactive compounds.
BIOFUELS BIOPRODUCTS & BIOREFINING-BIOFPR
(2023)
Article
Chemistry, Multidisciplinary
Ana S. Pereira, Isabel Belo, Marlene Lopes
Summary: Microbial lipids from Yarrowia lipolytica can be used as feedstocks for the biodiesel industry. Two-stage batch cultures are an effective strategy to improve the production of lipids. Volatile fatty acids obtained from anaerobic fermentation of organic wastes can reduce the production costs. The addition of VFAs mixture in the lipogenic phase can enhance microbial lipids production and maintain stability, with the main component being oleic acid, meeting the EU biodiesel standard.
APPLIED SCIENCES-BASEL
(2022)
Article
Green & Sustainable Science & Technology
Ana S. Pereira, Marlene Lopes, M. Salome Duarte, M. Madalena Alves, Isabel Belo
Summary: The ability of Yarrowia lipolytica to assimilate VFAs generated from acidogenic fermentation of FW and accumulate intracellular lipids was studied. Using a two-stage batch culture strategy resulted in a 10-fold increase in intracellular lipid accumulation compared to single batch culture. This biotechnological process is a reliable and sustainable option for the combined valorization of food waste and crude glycerol, and the microbial lipids produced can serve as feedstocks for the biodiesel industry.
Article
Food Science & Technology
Ana Rita Costa, Jose Manuel Salgado, Marlene Lopes, Isabel Belo
Summary: Vegetable oil extraction generates a large amount of by-products called oil cakes, which can be used in solid state fermentation to produce enzymes. This study found that the combination of different oil cakes affects the enzyme production and demonstrated the potential of utilizing by-products from vegetable oil industries.
FRONTIERS IN SUSTAINABLE FOOD SYSTEMS
(2022)
Article
Biotechnology & Applied Microbiology
Silvia Fernandes, Bruna Dias, Isabel Belo, Marlene Lopes
Summary: This study investigated the effect of increased air pressure on gluconic acid production and sugar consumption. It was found that sugarcane molasses and grape must can replace pure glucose and significantly improve gluconic acid productivity. Furthermore, the addition of sugarcane molasses under pressurized conditions further increased gluconic acid production.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Patricia Ferreira, Marlene Lopes, Isabel Belo
Summary: This study investigates the use of unconventional bioreactors, including a pressurized stirred tank reactor and an airlift bioreactor, to improve the oxygen mass transfer rate (OTR) and increase citric acid production. The results show that both bioreactor types can successfully enhance OTR and achieve higher citric acid yields, providing cost-saving benefits.
FERMENTATION-BASEL
(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)