Machine learning for high solid anaerobic digestion: Performance prediction and optimization
Bioresour Technol. 2024 Apr 4:130665. doi: 10.1016/j.biortech.2024.130665. Online ahead of print.ABSTRACTBiogas production through anaerobic digestion (AD) is one of the complex non-linear biological processes, wherein understanding its dynamics plays a crucial role towards process control and optimization. In this work, a machine learning based biogas predictive model was developed for high solid systems using algorithms, including SVM, ET, DT, GPR, and KNN and two different datasets (Dataset-1:10, Dataset-2:5 inputs). Support Vector Machine had the highest accuracy (R2) of all the algorithms at 91 % (Dataset-1) and 87 % ...
Source: Bioresource Technology - April 6, 2024 Category: Biotechnology Authors: Prabakaran Ganeshan Archishman Bose Jintae Lee Selvaraj Barathi Karthik Rajendran Source Type: research
Domestic wastewater sludge valorization: Multi-criteria evaluation of anaerobic digestion vs. hydrothermal liquefaction
Bioresour Technol. 2024 Apr 4;400:130655. doi: 10.1016/j.biortech.2024.130655. Online ahead of print.ABSTRACTThe emerging hydrothermal liquefaction (HTL) process is evaluated against the classical anaerobic digestion (AD) processes for stabilizing wastewater sludges and recovering their energy- and nutrient-contents. Although HTL affords faster stabilization, better process stability, and liquid fuel and sterile fertilizer recovery, it suffers from higher energy demand and lower technology readiness level. For a rational comparison of these pathways, a multi-criteria evaluation is conducted considering 21 technical, enviro...
Source: Bioresource Technology - April 5, 2024 Category: Biotechnology Authors: W M L K Abeyratne Y Zhang C E Brewer N Nirmalakhandan Source Type: research
Domestic wastewater sludge valorization: Multi-criteria evaluation of anaerobic digestion vs. hydrothermal liquefaction
Bioresour Technol. 2024 Apr 3:130655. doi: 10.1016/j.biortech.2024.130655. Online ahead of print.ABSTRACTThe emerging hydrothermal liquefaction (HTL) process is evaluated against the classical anaerobic digestion (AD) processes for stabilizing wastewater sludges and recovering their energy- and nutrient-contents. Although HTL affords faster stabilization, better process stability, and liquid fuel and sterile fertilizer recovery, it suffers from higher energy demand and lower technology readiness level. For a rational comparison of these pathways, a multi-criteria evaluation is conducted considering 21 technical, environmen...
Source: Bioresource Technology - April 5, 2024 Category: Biotechnology Authors: W M L K Abeyratne Y Zhang C E Brewer N Nirmalakhandan Source Type: research
A life cycle assessment of early-stage enzyme manufacturing simulations from sustainable feedstocks
Bioresour Technol. 2024 Apr 2:130653. doi: 10.1016/j.biortech.2024.130653. Online ahead of print.ABSTRACTEnzyme-catalyzed reactions have relatively small environmental footprints. However, enzyme manufacturing significantly impacts the environment through dependence on traditional feedstocks. With the objective of determining the environmental impacts of enzyme production, the sustainability potential of six cradle-to-gate enzyme manufacturing systems focusing on glucose, sea lettuce, acetate, straw, and phototrophic growth, was thoroughly evaluated. Human and ecosystem toxicity categories dominated the overall impacts. Se...
Source: Bioresource Technology - April 4, 2024 Category: Biotechnology Authors: Mandy Hobusch Onur K ırtel Samir Meramo Sumesh Sukumara Ditte Hededam Welner Source Type: research
Synergistic interactions of light and dark biofilms in rotating algal biofilm system for enhanced aquaculture wastewater treatment
This study investigates the synergistic interactions between light and dark biofilms with a Rotating Algal Biofilm (RAB) system for effective aquaculture wastewater treatment. The RAB system, optimized with a 5-day harvest time and 12-hour hydraulic retention time, demonstrated superior biomass productivity (3.3 g m-2 d-1) and total ammoniacal nitrogen removal (82.3 %). Comparative analysis of light and dark biofilms revealed their complementary roles, with the light side exhibiting higher carbon assimilation and nutrient removal efficiencies, while the dark side contributed significantly to denitrification and phosphorus ...
Source: Bioresource Technology - April 4, 2024 Category: Biotechnology Authors: Wenbin Liu Jun Qian Huijun Ding Jingjing Li Jin Liu Wenguang Zhou Source Type: research
Optimizing invasive plant biomass valorization: Deep eutectic solvents pre-treatment coupled with ZSM-5 catalyzed fast pyrolysis for superior bio-oil quality
Bioresour Technol. 2024 Apr 2:130652. doi: 10.1016/j.biortech.2024.130652. Online ahead of print.ABSTRACTThe primary objective of this study is to explore the application of a deep eutectic solvent, synthesized from lactic acid and choline chloride, in combination with a pre-treatment involving ZSM-5 catalytic fast pyrolysis, aimed at upgrading the quality of bio-oil. Characterization results demonstrate a reduction in lignin content post-treatment, alongside a significant decrease in carboxyls and carbonyls, leading to an increase in the C/O ratio and noticeable enhancement in crystallinity. During catalytic fast pyrolysi...
Source: Bioresource Technology - April 4, 2024 Category: Biotechnology Authors: Jie Fang Bo Zhang Yulong Fan Minjia Liu Qing Xu Yaji Huang Huiyan Zhang Source Type: research
Migration and transformation modes of microplastics in reclaimed wastewater treatment plant and sludge treatment center with thermal hydrolysis and anaerobic digestion
This study investigated the fate of microplastics in a reclaimed wastewater treatment plant and a centralized sludge treatment center with thermal hydrolysis and anaerobic digestion. The results exhibited that the effluent microplastics of this reclaimed wastewater treatment plant were 0.75 ± 0.26 items/L. Approximately 98 % of microplastics were adsorbed and precipitated into sludge. After thermal hydrolysis, anaerobic digestion and plate and frame dewatering, the removal rate of microplastics was 41 %. Thermal hydrolysis was the most effective method for removing microplastics. Polypropylene, polyamide and polyethylene ...
Source: Bioresource Technology - April 3, 2024 Category: Biotechnology Authors: Yaxin Wang Xiuhong Liu Weipeng Han Jiatong Jiao Wenyang Ren Gaofeng Jia Chenduo Huang Qing Yang Source Type: research
Synchronous removal of gaseous toluene and benzene and degradation process shifts in microbial fuel cell-biotrickling filter system
Bioresour Technol. 2024 Apr 1;400:130650. doi: 10.1016/j.biortech.2024.130650. Online ahead of print.ABSTRACTIllustrating the biodegradation processes of multi-component volatile organic compounds (VOCs) will expedite the implication of biotechnology in purifying industrial exhaust. Here, performance shifts of microbial fuel cell and biotrickling filter combined system (MFC-BTF) are investigated for removing single and dual components of toluene and benzene. Synchronous removal of toluene (95 %) and benzene (97 %) are achieved by MFC-BTF accompanied with the output current of 0.41 mA. Elevated content of extracellular poly...
Source: Bioresource Technology - April 3, 2024 Category: Biotechnology Authors: Jianan Feng Tianqing Song Yuanxin Zhang Shanshan Wang Ruiqin Zhang Long Huang Changshen Zhang Panpan Liu Source Type: research
Elimination of Chlorella using peracetic acid activated by dielectric barrier discharge plasma: Mechanism and cell deactivation process
This study delves into the effectiveness of the dielectric barrier discharge (DBD) plasma activated peracetic acid (PAA) system in deactivating Chlorella. Within 15 min, the algae removal effectiveness reached 89 % under ideal trial conditions. DBD plasma activation of PAA augmented the concentration of reactive species such as ·OH, 1O2, and organic radicals (RO·) in the solution, which are involved in the process of cell inactivation. Reactive oxygen species (ROS) within Chlorella cells continued to rise as a result of treatment-induced damage to the morphological structure and cell membrane of the organism. DNA and chl...
Source: Bioresource Technology - April 3, 2024 Category: Biotechnology Authors: Yexiang Yang Wenxuan Jiang He Guo Source Type: research
Migration and transformation modes of microplastics in reclaimed wastewater treatment plant and sludge treatment center with thermal hydrolysis and anaerobic digestion
This study investigated the fate of microplastics in a reclaimed wastewater treatment plant and a centralized sludge treatment center with thermal hydrolysis and anaerobic digestion. The results exhibited that the effluent microplastics of this reclaimed wastewater treatment plant were 0.75 ± 0.26 items/L. Approximately 98 % of microplastics were adsorbed and precipitated into sludge. After thermal hydrolysis, anaerobic digestion and plate and frame dewatering, the removal rate of microplastics was 41 %. Thermal hydrolysis was the most effective method for removing microplastics. Polypropylene, polyamide and polyethylene ...
Source: Bioresource Technology - April 3, 2024 Category: Biotechnology Authors: Yaxin Wang Xiuhong Liu Weipeng Han Jiatong Jiao Wenyang Ren Gaofeng Jia Chenduo Huang Qing Yang Source Type: research
Synchronous removal of gaseous toluene and benzene and degradation process shifts in microbial fuel cell-biotrickling filter system
Bioresour Technol. 2024 Apr 1:130650. doi: 10.1016/j.biortech.2024.130650. Online ahead of print.ABSTRACTIllustrating the biodegradation processes of multi-component volatile organic compounds (VOCs) will expedite the implication of biotechnology in purifying industrial exhaust. Here, performance shifts of microbial fuel cell and biotrickling filter combined system (MFC-BTF) are investigated for removing single and dual components of toluene and benzene. Synchronous removal of toluene (95 %) and benzene (97 %) are achieved by MFC-BTF accompanied with the output current of 0.41 mA. Elevated content of extracellular polymeri...
Source: Bioresource Technology - April 3, 2024 Category: Biotechnology Authors: Jianan Feng Tianqing Song Yuanxin Zhang Shanshan Wang Ruiqin Zhang Long Huang Changshen Zhang Panpan Liu Source Type: research
Elimination of Chlorella using peracetic acid activated by dielectric barrier discharge plasma: Mechanism and cell deactivation process
This study delves into the effectiveness of the dielectric barrier discharge (DBD) plasma activated peracetic acid (PAA) system in deactivating Chlorella. Within 15 min, the algae removal effectiveness reached 89 % under ideal trial conditions. DBD plasma activation of PAA augmented the concentration of reactive species such as ·OH, 1O2, and organic radicals (RO·) in the solution, which are involved in the process of cell inactivation. Reactive oxygen species (ROS) within Chlorella cells continued to rise as a result of treatment-induced damage to the morphological structure and cell membrane of the organism. DNA and chl...
Source: Bioresource Technology - April 3, 2024 Category: Biotechnology Authors: Yexiang Yang Wenxuan Jiang He Guo Source Type: research
Elevated caproic acid production from one-stage anaerobic fermentation of organic waste and its selective recovery by electro-membrane process
Bioresour Technol. 2024 Mar 30;399:130647. doi: 10.1016/j.biortech.2024.130647. Online ahead of print.ABSTRACTA constructed microbial consortia-based strategy to enhance caproic acid production from one-stage mixed-fermentation of glucose was developed, which incubated with acidogens (Clostridium sensu stricto 1, 11 dominated) and chain elongators (including Clostridium sensu stricto 12, Sporanaerobacter, and Caproiciproducens) acclimated from anaerobic sludge. Significant product upgrading toward caproic acid (8.31 g‧L-1) and improved substrate degradation was achieved, which can be greatly attributed to the lactic acid...
Source: Bioresource Technology - April 1, 2024 Category: Biotechnology Authors: Wenyan Zhao Heqing Jiang Wenjian Dong Qiaochu Liang Binghua Yan Yang Zhang Source Type: research
Strain engineering of Bacillus coagulans with high osmotic pressure tolerance for effective L-lactic acid production from sweet sorghum juice under unsterile conditions
Bioresour Technol. 2024 Mar 30:130648. doi: 10.1016/j.biortech.2024.130648. Online ahead of print.ABSTRACTOpen unsterile fermentation of the low-cost non-food crop, sweet sorghum, is an economically feasible lactic acid biosynthesis process. However, hyperosmotic stress inhibits microbial metabolism and lactic acid biosynthesis, and engineering strains with high osmotic tolerance is challenging. Herein, heavy ion mutagenesis combined with osmotic pressure enrichment was used to engineer a hyperosmotic-tolerant Bacillus coagulans for L-lactic acid production. The engineered strain had higher osmotic pressure tolerance, when...
Source: Bioresource Technology - April 1, 2024 Category: Biotechnology Authors: Yongli Yan Wenwen Shan Chong Zhang Yufan Wu Xinhui Xing Jihong Chen Wei Hu Source Type: research
Efficient synthesis of rare sugars from galactose in hot compressed water using eggshells as an environmentally friendly catalyst
Bioresour Technol. 2024 Mar 30;399:130642. doi: 10.1016/j.biortech.2024.130642. Online ahead of print.ABSTRACTAqueous galactose solutions containing eggshell was heated at 120 °C to produce calcium supplements containing rare sugars. Galactose was isomerized to rare sugars with improving rare sugar yields compared to those without eggshell. Organic acids were also formed as byproducts during the reaction. These acids were neutralized by dissolving eggshells with increasing the calcium ion concentration in the solution. When eggshell components (calcium carbonate, magnesium carbonate, or calcium phosphate) were used for th...
Source: Bioresource Technology - April 1, 2024 Category: Biotechnology Authors: Shin Futamata Yuichiro Onishi Shuji Adachi Pramote Khuwijitjaru Yoshiyuki Watanabe Fumito Tani Takashi Kobayashi Source Type: research
