Article
Engineering, Environmental
Songjie Li, Guanghui Chen, Deshuang Yu, Yanling Qiu, Enhui Guo, Yiming Yu
Summary: This study investigated the performance of bioleaching technology for the treatment of oily sludge and removal of heavy metals. By using specific substrates and optimizing operating parameters, high reduction and removal rates for oily sludge and certain heavy metals were achieved.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Energy & Fuels
Xianwu Zhang, Hong Zhang, Haoxuan Wang, Yijun Cao, Ling Zhang
Summary: Oily sludges produced during oil production processes are hazardous to the environment. A chitosan-based emulsion was developed to efficiently remove heavy oil from solids, providing valuable information on treating technology for oily sludge and oil-contaminated solids.
Article
Engineering, Environmental
Yihang Duan, Ningbo Gao, Ayesha Tariq Sipra, Kun Tong, Cui Quan
Summary: The study revealed that siloxane and heavy oil components remain in the solid residue during hydrothermal treatment and mechanical compression, while light oils and oils with hydrophilic groups are transferred to hydrothermal fluids. Additionally, the content of heavy metals in the solid residue increased at a temperature of 240 degrees Celsius and a residence time of 60 minutes. Fourier-transform infrared spectroscopy results showed an increase in hydroxyl groups, which benefits the adsorption of heavy metals and other pollutants.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Qinghua Bao, Lixin Huang, Jianlong Xiu, Lina Yi, Yuandong Ma
Summary: A systematic study was conducted to investigate the micellar behavior of anionic lipopeptide (LT) and nonionic sophorolipid (SL) in their mixed state, revealing synergism in forming mixed micelles. The experimental critical micelle concentrations were lower than ideal, showing negative deviation from ideal behavior. The binary mixed bio-surfactant system demonstrated higher washing efficiency for oily sludge compared to single surfactant systems, with the strongest synergy observed at a mass ratio of 8:2.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Chemistry, Physical
Xiujie Chang, Xueshu Li, Shujin Ge, Guanglei Tan, Zhaodong Wang, Yanfei Ma, Lin Niu, Qiuhong Li
Summary: This research focused on the reduction and harmless treatment of oily sludge using microemulsion cleaning with quaternary ammonium ionic liquids. The optimal treatment conditions were determined, resulting in a residual oil rate of 1.03%. The sludge was characterized using SEM, FTIR, contact angle measurement, and TG. The study also provided theoretical guidance for the efficient treatment of oily sludge through the understanding of the oil removal mechanism using [N1,1,16EtOH]Cl microemulsions.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Biotechnology & Applied Microbiology
Ayushi Chafale, Sera Das, Atya Kapley
Summary: This study demonstrates a methodology for the recovery of oil fractions from oily sludge using microbes that produce surface-active metabolites. It successfully recovered different hydrocarbons using two bacterial isolates and shows potential for integration with the concept of a circular economy.
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
(2023)
Article
Engineering, Environmental
Gaoyun Wang, Le Wang, Linhu Li, Yunan Chen, Wen Cao, Hui Jin, Zhiwei Ge, Liejin Guo
Summary: The efficiency of oil removal and the diffusion characteristics of oil in oily sludge particles under supercritical water treatment were investigated. The results showed that increasing the treatment duration and reducing the particle diameter significantly improved the oil removal efficiency, while the treatment temperature had little influence. A diffusion mechanism was proposed and a mathematical model was developed to represent the heat and mass transfer in the oily sludge particles. It was found that the oil concentration in supercritical water and the particle diameter had a considerable influence on the oil removal efficiency.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jinjian Hou, Fei Song, Xinyu Ji, Shuanglong Lin
Summary: This study demonstrates that the use of ionic liquids can effectively enhance the recovery of heavy oil from oily sludges. Both [C(12)mim] [PF6] and [C(12)mim][Br] ionic liquids show promising results in terms of increasing the oil recovery and improving the sands' hydrophilicity. The high recovery rate and recyclability make the ionic liquids a viable option for enhancing oil recovery.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Green & Sustainable Science & Technology
Wenying Li, Yanfei Ma, Xuedong Feng, Muidh Alheshibri, Xiangning Bu, Guangxi Ma, Mengqian Ni, Qiuhong Li, Aiju Liu, Xiaoyin Niu
Summary: This study evaluated a chemical agent-free approach using froth flotation and centrifugation to enhance the separation of oil and solid materials at normal temperatures. The effects of various factors were analyzed, and it was found that the oil recovery and the oil content of residue could be effectively reduced. Fine particles comprising secondary minerals were found to enter the oil phase, which could be further reduced by a centrifugal treatment. The aqueous phase from the flotation and centrifugation processes was found to be reusable.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Agricultural Engineering
Chunxiang Chen, Hongjian Ling, Song Qiu, Xiaodong Huang, Dianzhao Fan, Jian Zhao
Summary: In this study, co-pyrolysis of Chlorella vulgaris and oily sludge was investigated using a microwave furnace. The results showed that a mixing ratio of CV/OS = 1:1 was optimal for co-pyrolysis, and the addition of 10% activated carbon improved the pyrolysis characteristics. The most significant synergistic interaction between NiO and activated carbon occurred in the 10% compound, resulting in an increase in aliphatic hydrocarbons in the bio-oil.
BIORESOURCE TECHNOLOGY
(2022)
Article
Energy & Fuels
Xingyue Gou, Guocan Zheng, Jinjing Tang, Changyuan Tao, Renlong Liu, Zuohua Liu
Summary: This study proposed an electric field enhanced thermochemical cleaning method for efficient oil recovery from oily sludge. The instability of the sludge emulsion system was enhanced by the electric field, resulting in an oil removal efficiency of over 60% with a minimum energy consumption of 604.8 J/g. Under the optimum conditions, the residual oil content in the sludge decreased from 8.6% to 2.8%, leading to a maximum increase of 143% in oil removal efficiency compared to non electric field treatment. The recovered oil mainly consisted of long chain alkanes, which had high recovery value. Characterization and analysis results provided insights into the mechanism and guidance for low energy consumption utilization of oily sludge in industrial processing.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2023)
Article
Engineering, Environmental
Linxin Zhong, Chunyi Sun, Fenglin Yang, Yingchao Dong
Summary: The study presents a waste-to-resource strategy for recycling copper-bearing waste and treating oily wastewater by rational design of spinel ceramic membranes. A spinel phase conversion mechanism was proposed, and spinning and sintering parameters were systematically studied to tailor membrane structure and properties. This approach demonstrates the feasibility of recycling hazardous metal-bearing sludges into functional ceramic membranes for water treatment applications.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Agriculture, Multidisciplinary
Zhenglin Dong, Lan Li, Yiming Zhang, Liu Guo, Xin Wu, Yulong Yin, Dan Wan
Summary: Circadian iron administration affected iron absorption and storage in pigs. Evening iron supplementation may be a more effective pattern for iron utilization. The rhythmic system in the intestine, driven by the time, played an important role in this process.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2021)
Article
Engineering, Environmental
Xingdong Shi, Wei Wei, Lan Wu, Bing-Jie Ni
Summary: This review comprehensively summarizes the mechanisms of ZVI for enhancing nutrients removal in biological wastewater treatment, discusses the role of ZVI in improving excess sludge reduction for methane production, and analyzes the feasibility of recovering phosphorus from anaerobic sludge digestion system through using ZVI. Additionally, knowledge gaps regarding the application of ZVI in sludge or wastewater treatment are identified to facilitate further development of ZVI-based biological technology.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Analytical
Yuheng He, Zi Wang, Jie Wang
Summary: This study aims to investigate the pyrolysis behaviors of three different oil sludges and determine the properties of the liquid products. The pyrolysis process can promote the cracking of long-chain alkanes and O/N-containing functional groups, leading to the formation of pyrolysis oil with low ash contents and viscosities. The water-free pyrolysis oils also have higher higher heating values (HHVs) than the parent dried oil sludges.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Nanoscience & Nanotechnology
Kapil Sadani, Pooja Nag, Lakshmi Pisharody, Xiao Yun Thian, Geetika Bajaj, Gayatri Natu, Suparna Mukherji, Soumyo Mukherji
Summary: This study proposes a method of using copper nanoparticles for contact disinfection, which can achieve complete disinfection of pathogenic microorganisms on various surfaces within minutes. The nanoparticles also show good retention on fabric surfaces and have the potential to replace bleach and alcohol-based sanitizers.
Article
Engineering, Environmental
Lakshmi Pisharody, Sumathi Suresh, Suparna Mukherji
Summary: The study found that coliphages are good indicators of RVA in the winter, while both coliphages and coliforms need to be monitored in the summer and monsoon seasons for predicting the presence of RVA with confidence. Principal component analysis and binary logistic regression confirmed MS2 as a better indicator of RVA, showing a strong positive correlation particularly in winter.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2022)
Article
Environmental Sciences
Priyankar Chand, Suryendu Dutta, Suparna Mukherji
Summary: Percolation of water through oily sludge during storage and handling can lead to soil and groundwater contamination. In this study, the water-soluble fraction (WSF) of oily sludge, obtained by equilibrating the sludge with water, was analyzed. The WSF contained dissolved organic carbon (DOC) as well as various organic compounds such as quinolines, naphthalenes, and phenol derivatives. A consortium of three bacterial strains was found capable of degrading the WSF, with Bacillus cereus showing the highest degradation rate for certain substances. Biodegradation of WSF led to the removal of n-alkanes within 2 days.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Sanjeeb Mohapatra, Daniel Snow, Patrick Shea, Andy Galvez-Rodriguez, Manish Kumar, Lokesh P. Padhye, Suparna Mukherji
Summary: The photochemical transformation of pharmaceuticals is significant in wastewater treatment plants and surface waters. This study investigated the photodegradation of five pharmaceuticals in samples from a wastewater treatment plant and surface water sources. The results show that the presence of organic matter and reactive radicals play a crucial role in the photodegradation process.
ENVIRONMENTAL RESEARCH
(2023)
Article
Agricultural Engineering
Shihao Xi, Xinlei Dong, Qingshan Lin, Xiang Li, Jie Ma, Feixiang Zan, Basanta Kumar Biswal, Mukesh Kumar Awasthi, Zongping Wang, Guanghao Chen, Gang Guo
Summary: Electrochemical pretreatment (EPT) is an efficient technology to improve volatile fatty acids (VFAs) production from anaerobic fermentation of waste activated sludge (WAS). This study examined the combined effects of different current intensities, electrolyte NaCl dosage, and pretreatment time on VFAs production. The results showed that VFAs production was significantly increased by 51.6% when EPT was conducted at 1.0 A, 1.0 g/L, and 60 min. Response surface methodology determined the optimal EPT conditions to be 1.0 A, 1.2 g/L, and 66 min. The potential mechanisms involved enhanced solubilization and hydrolysis of WAS and selective inactivation of methanogens, leading to the enrichment of acidogenic bacteria and increased VFAs production.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Zhijie Wang, Jianguo Bao, Haozhou He, Suparna Mukherji, Liting Luo, Jiangkun Du
Summary: This study developed a novel and cost-effective method to anchor atomic iron catalysts in Enteromorpha-derived carbon matrices, and the catalyst exhibited high activity in peroxydisulfate (PDS) conversion for organic pollutant oxidation. The mechanism of the catalyst was investigated through experiments and theoretical calculations, and its performance in realistic wastewater remediation scenarios was also demonstrated.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Reeti Kumar, Liya George, Zhao Jun, Suparna Mukherji
Summary: Heterogeneous photocatalysis using graphene oxide-TiO2 nanocomposite (GOT) was effective in removing dichlorvos and malathion pesticides from water. Optimum results were achieved at pH 6 and a catalyst dose of 60 mg/L, with high degradation rates and mineralization levels observed under UV irradiation.
Article
Energy & Fuels
Ankisha Vijay, Prakash C. Ghosh, Suparna Mukherji
Summary: This study developed a dual-chambered microbial fuel cell (MFC) for the treatment of saline wastewater. The use of halophilic exo-electrogenic bacteria in the anodic chamber and denitrifying bacteria in the cathodic chamber significantly improved the power generation and removal of organics and nitrate. Electrochemical analysis showed enhanced activity and lower resistance with increased salinity. Microbial community analysis identified Clostridium, Shewanella, and Bacillus as the predominant genera in the anodic chamber. Overall, this study demonstrated the dual applicability of the MFC system for organics and nitrate removal from saline and contaminated wastewater while generating power.
Article
Green & Sustainable Science & Technology
Neha Garg, Anurag Garg, Suparna Mukherji
Summary: In this study, the removal of the recalcitrant azo dye reactive yellow 145 (RY145) was achieved through sequential treatment using zero valent aluminum (ZVAl) and bacterial degradation. The ZVAl pretreatment resulted in significant decolorization, followed by microbial degradation of the intermediates. The combined treatment exhibited high efficiency in dye decolorization and organic compound degradation, addressing the challenges posed by RY145.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Lokesh P. Padhye, Tahereh Jasemizad, Shiv Bolan, Olga Tsyusko, Jason M. Unrine, Basanta Kumar Biswal, Rajasekhar Balasubramanian, Yingyu Zhang, Tao Zhang, Jian Zhao, Yang Li, Joerg Rinklebe, Hailong Wang, Kadambot H. M. Siddique, Nanthi Bolan
Summary: Silver is a rare and precious metal found in minerals and released into the environment through weathering and mining activities. It also enters the environment through manufacturing and use of silver compounds. Silver nanoparticles have become a significant source of anthropogenic silver in the environment. Most silver in soil and water is sorbed to particles and precipitated as various compounds. Humans and animals can be exposed to silver through inhalation and consumption of contaminated food and water. Remediation of silver-contaminated soil and water can be achieved through immobilization and mobilization processes. This review provides an overview of the sources, geochemistry, health hazards, remediation practices, and regulatory mandates of silver contamination in complex environmental settings, and discusses knowledge gaps and research priorities.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Chemistry, Multidisciplinary
Bei Zhang, Basanta Kumar Biswal, Jingjing Zhang, Rajasekhar Balasubramanian
Summary: The hydrothermal process is an emerging technology that converts biomass feedstocks into solid, liquid, and gaseous products using hot compressed water. This review discusses the properties of biomass feedstocks, the transformation pathways, the role of hydrothermal process in biomass conversion, and the sustainability assessments of hydrothermal processes. It also offers perspectives for transitioning to a biobased society in the context of changing climate.
Article
Environmental Sciences
Boyi Cheng, Da Zhang, Qingshan Lin, Shihao Xi, Jie Ma, Feixiang Zan, Basanta Kumar Biswal, Zongping Wang, Gang Guo
Summary: Recently, there has been increasing focus on the recovery of resources and energy, such as short-chain fatty acids (SCFAs) and phosphorus (P), from waste active sludge (WAS) under the Dual carbon goals. This study compared four thiosulfate-assisted Fe2+/persulfate (TAFP) pretreatments of WAS, followed by anaerobic fermentation for SCFA production and P recovery. The results showed that TAFP pretreatments enhanced WAS disintegration and promoted SCFA production, and also improved P bioavailability. Economic evaluation further confirmed the cost-effectiveness of ex-situ TAFP pretreatment for SCFA production and P recovery from WAS.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Microbiology
Basanta Kumar Biswal, Rajasekhar Balasubramanian
Summary: With the increasing use of lithium-ion batteries (LIBs), there is a growing amount of spent LIBs generated. These spent LIBs contain valuable metals such as cobalt (Co) and lithium (Li) which are in high demand but limited supply. In order to avoid environmental pollution and recover these valuable metals, recycling of spent LIBs using bioleaching methods is being explored. This review focuses on recent advancements in utilizing bacterial and fungal agents for the extraction of Co and Li from the solid matrix of spent LIBs. Both bacterial and fungal leaching are effective in dissolving metals from spent LIBs, with Li having a higher dissolution rate than Co. The performance of bioleaching depends on both the microbial agents and various abiotic factors. Overall, this review is important for the development of efficient and sustainable bioleaching processes to recover Co and Li from spent LIBs and achieve circular economy.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Environmental Sciences
Shuyue Yan, Basanta Kumar Biswal, Rajasekhar Balasubramanian
Summary: This study compared the adsorption characteristics of a common biodegradable microplastic (PLA) with three non-biodegradable plastics (PE, PP, and PVC) for six heavy metals (Cd2+, Cu2+, Cr3+, Ni2+, Pb2+, and Zn2+). The results showed that biodegradable microplastics contained more toxic heavy metals than some non-biodegradable plastics, with Cr3+ having the strongest adsorption capacity. Additionally, biodegradable microplastics released a higher percentage of heavy metals in a shorter time in an acidic environment. This study provides insights into the interactions and removal mechanisms of microplastics with heavy metals in aquatic environments.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Engineering, Environmental
Basanta Kumar Biswal, Rajasekhar Balasubramanian
Summary: Adsorption technology, particularly using biochar as an adsorbent, has shown promising results in removing heavy metals from water and wastewater systems. The effectiveness of biochar-based adsorption relies on factors such as water chemistry, contact time, adsorbent dose, and environmental parameters. The key mechanisms behind heavy metal adsorption onto biochar include precipitation and ion exchange. This review highlights the sustainable nature of biochar-based adsorption and identifies areas for further research and improvement.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
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)
