Article
Agricultural Engineering
Han Wang, Qun Yan, Xiaoqian Zhong, Irini Angelidaki, Ioannis A. Fotidis
Summary: Anaerobic co-digestion is a strategy for increasing methane production, but substrates rich in proteins and lipids can cause a synergetic co-inhibition effect. This study explored the microbial mechanisms behind the co-inhibition effect and found that ammonia played a major role in affecting methanogens. Decreased abundances of certain microorganisms and critical enzymes confirmed the synergetic co-inhibition effect.
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Suniti Singh, Johanna M. Rinta-Kanto, Piet N. L. Lens, Marika Kokko, Jukka Rintala, Vincent O'Flaherty, Umer Zeeshan Ijaz, Gavin Collins
Summary: Distinct microbial assemblages evolve in anaerobic digestion (AD) reactors to drive sequential conversions of organics to methane, with granular, biofilm and planktonic assemblages differentiated by diversity, structure, and assembly mechanisms. LCFA loading rates and HRT are significant drivers shaping microbial community dynamics and assembly, with active roles of Methanosaeta and Syntrophaceae-affiliated taxa in syntrophic LCFA bioconversion at short HRTs and 20 degrees C.
BIORESOURCE TECHNOLOGY
(2022)
Article
Agricultural Engineering
Xia He, Zhenyu Guo, Jian Lu, Ping Zhang
Summary: The addition of carbon-based conductive materials positively influences the co-digestion of fat, oil, and grease (FOG) and waste activated sludge (WAS), leading to increased methane production, organic matter removal, and COD conversion efficiency. Carbon cloth showed the highest total amount of bacteria/archaea, potentially due to the faster acetate conversion facilitated by DIET-mediated SAO reaction.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Keqiang Wang, Guanyu Zhu, Qing Feng, Xiaoxiang Li, Yaowei Lv, Yong Zhao, Hongda Pan
Summary: The performance of peat biomethanation was studied in bioelectrochemical anaerobic digestion at different applied voltages. The methane yield was significantly increased in the bioelectrochemical anaerobic digestion compared to conventional anaerobic digestion, reaching the highest at 4 V applied voltage. The enrichment of electroactive microorganisms and the enhancement of direct interspecies electron transfer were observed in the bioelectrochemical system, as well as an increase in specific microorganisms and acetoclastic methanogenesis with the increase in applied voltage. These findings offer a solution for converting low-rank coal into a new alternative energy source.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Yun Peng, Lei Li, Pingjin Yang, Hengyi Liu, Wenjie Ye, Zhirong Xue, Xuya Peng, Xiaoming Wang
Summary: This study identified the key microorganisms and metabolic links causing instability during endogenous ammonia accumulation in anaerobic digestion. It revealed the important role of mixed acid fermentation and methanogenesis in the performance of methane production and provided new insights for addressing ammonia inhibition in nitrogen-rich organic waste treatment.
Article
Environmental Sciences
Madan Tandukar, Spyros G. Pavlostathis
Summary: The study investigated the benefits of co-digestion of a sludge-mix with concentrated fat-oil-grease (FOG), finding that it can enhance the degradation of sludge and increase methane production. Co-digestion is feasible and recommended for municipal wastewater treatment facilities to match target biogas/methane levels by balancing energy production and solids destruction based on their specific needs.
Article
Agricultural Engineering
Zifan Wang, Weikang Zhang, Xiujuan Xing, Xiu Li, Derui Zheng, Huanyu Bao, Lizhen Xing
Summary: This study investigated the effects of Fe3O4 on propionate methanogenesis in ASBR. The addition of Fe3O4 decreased the maximum methane production rate and inhibited interspecies electron transfer. The microbial community analysis revealed changes in the relative abundance of certain bacterial species. Metagenomics analysis showed a decrease in hydrogenotrophic methanogenesis genes and an increase in acetate oxidation genes. Thus, Fe3O4 addition reduces propionate methanogenesis during anaerobic digestion.
BIORESOURCE TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Kun Wu, Weijia Xu, Jian Lu, Chun Wang, Jinhui Liao, Xia He
Summary: This study found that calcium can increase methane production in the anaerobic digestion of FOG, with Ca(OH)2 being the most effective calcium source for enhancing methane production and a Ca2+/LCFAs = 0.5 being the most beneficial mole ratio.
Article
Environmental Sciences
Liang Zhang, Xianzhe Gong, Li Wang, Kun Guo, Shenbin Cao, Yan Zhou
Summary: The study demonstrates that THP pre-treated sludge significantly reduced microbial diversity, shaped a more intense microbial community structure, and fostered more pronounced microbial interactions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Green & Sustainable Science & Technology
Yixuan Zhou, Xianbo Su, Weizhong Zhao, Lufei Wang, Haijiao Fu
Summary: The combination of microbial electrolytic cells and conductive materials can promote direct interspecies electron transfer (DIET) to increase methane production and enhance organic matter degradation. The study found that a single-chamber microbial electrolytic cell constructed with graphene could increase the abundance of hydrolytic bacteria and hydrogen-producing acetogenic bacteria, accelerate the degradation rate of organic compounds, and provide sufficient nutrients for methanogens, leading to an increased biomethane production.
Article
Energy & Fuels
Dominik Andreides, Dana Pokorna, Jana Zabranska
Summary: This study assessed the effects of different syngas loading rates and mechanical stirring on the biomethanation of syngas in a lab-scale continuous anaerobic digester processing sewage sludge. The results showed that mechanical stirring improved the conversion rate of CO and H2, while increased pH resulted in acetic acid accumulation.
Article
Agricultural Engineering
Yeqing Li, Yinjun Liu, Ximeng Wang, Sen Luo, Dongfang Su, Hao Jiang, Hongjun Zhou, Junting Pan, Lu Feng
Summary: This study aimed to demonstrate the feasibility of using syngas as the sole carbon source for biomethanation. The results showed that under thermophilic conditions, the microbial community was able to adapt to high concentrations of CO in syngas. These findings strengthen the theoretical basis of syngas biomethanation and support its potential industrialization.
BIORESOURCE TECHNOLOGY
(2022)
Article
Engineering, Environmental
Yinping Xiang, Weiping Xiong, Rui Xu, Zhaohui Yang, Yanru Zhang, Meiying Jia, Haihao Peng
Summary: This study investigated the long-term effects of antibiotics on sludge anaerobic digestion and revealed the response mechanism of dominant microbiome to antibiotic stress. The results showed that many functional genes associated with glycolysis, protein hydrolysis, and acidification increased under antibiotic stress, while genes related to acetate and acetyl-coA conversion decreased. Additionally, the major methanogenic metabolic pathways were altered, and the dominant microbial genomes contained abundant functional genes associated with EPS biosynthesis, secondary metabolite biosynthesis, and bacterial chemotaxis.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Nan Wang, Yutong Yang, Kunde Xu, Xiangang Long, Yurui Zhang, Hongzhou Liu, Tiezhu Chen, Jianchang Li
Summary: This study investigated the reasons behind the higher methane conversion and lower CO2 emissions in electrochemical anaerobic digestion (EAD) compared to anaerobic digestion (AD). Single-chamber AD and EAD reactors were utilized, with temperature as the variable factor. Various indicators such as current, pH, electrode potential, gas content, and microbial community were analyzed. The results revealed that EAD exhibited improved hydrogen-dependent CO2 reduction pathway and had specific dominant microorganisms, such as Trichloromonas, Oscillibacter, Syntrophomonas, and Methanosaeta.
Article
Engineering, Environmental
Jun He, Tao Luo, Zhijian Shi, Irini Angelidaki, Shicheng Zhang, Gang Luo
Summary: The inhibition of anaerobic digestion by phenolic compounds can be overcome by the addition of hydrochar, which enhances methane production and maintains key microbial populations.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Tran Hung Nguyen, Huu Thanh Le, Tri Thien Vu, Minh Tri Le, Xuan Hoan Nguyen, Duong Duc La, S. Woong Chang, D. Duc Nguyen, Tuong Manh Nguyen
Summary: The purpose of this study was to synthesize selenium nanoparticles (Se NPs) using the solution plasma process (SPP), which is a novel green synthesis method. The Se NPs were successfully synthesized in an ethanol-water solution at room temperature and were characterized using various techniques. The results showed that the synthesized Se NPs had uniform flower-like structures and exhibited notable antimicrobial properties against bacteria and yeast.
WASTE AND BIOMASS VALORIZATION
(2023)
Article
Biotechnology & Applied Microbiology
Monika Sharma, El-Sayed Salama, Muhammad Usman, Aman Khan, Muhammad Arif, Xiangkai Li
Summary: The ability of Pseudomonas turukhanskensis GEEL-01 to degrade phenanthrene was optimized using response surface methodology. The study identified the optimal temperature, pH, and inoculum for the highest degradation efficiency. High-performance liquid chromatography and gas chromatography-mass spectrometry were used to monitor and identify the degradation products. This study demonstrated the effectiveness of optimizing the parameters for P. turukhanskensis GEEL-01 in degrading phenanthrene.
Review
Agricultural Engineering
Yue Zhang, Zheli Ding, Md Shahadat Hossain, Rupesh Maurya, Yulu Yang, Vijai Singh, Deepak Kumar, El-Sayed Salama, Xinwei Sun, Raveendran Sindhu, Parameswaran Binod, Zengqiang Zhang, Mukesh Kumar Awasthi
Summary: Due to the increasing global demand for sustainable energy, lignocellulosic and algal biomass are being considered as potential feedstock for producing biochemicals and bioenergy. Pretreatment of biomass can improve the conversion efficiency and product yield by disrupting their complex structure. This review discusses recent advances in various pretreatment methods for lignocellulosic and algal biomass, as well as the introduction of life cycle assessment (LCA) for environmental impact evaluation.
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Pritam Kaur, Madhu Khatri, Gursharan Singh, Manickam Selvaraj, Mohammed A. Assiri, Samuel Lalthazuala Rokhum, Shailendra Kumar Arya, Sumathi Jones, Babett Greff, Soon Woong Chang, Balasubramani Ravindran, Mukesh Kumar Awasthi
Summary: This study used two pretreatment methods, hydrogen peroxide-acetic acid (HP-AC) and sodium hypochlorite-sodium hydroxide (SH-SH), to produce xylo-oligosaccharides (XOS) from agriculture waste such as green coconut and vegetable cocktail. The optimal conditions for pretreatment were 80 degrees C, 4.0% NaClO, and 2 h, followed by 0.08% NaOH, 55 degrees C, and 1 h. Enzymatic hydrolysis of green coconut resulted in the best outcomes. Different types of XOS were obtained from the treated biomass, with a high quantity of xylo-pentose (96.44% and 93.09% from GC and VC, respectively) and other XOS <2%. This study provides a secure and economical method for converting secondary crop residue into XOS and fermentable sugars.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Mayur B. Kurade, Ghulam Mustafa, Muhammad Tariq Zahid, Mukesh Kumar Awasthi, Mital Chakankar, Katrin Pollmann, Moonis Ali Khan, Young Kwon Park, Soon Woong Chang, Woojin Chung, Byong-Hun Jeon
Summary: This study demonstrates a novel approach of integrated phycoremediation and ultrasonication-irradiation treatment (iPUT) used for improving the degradation of sulfonamide antibiotics via a cumulative effect of combined treatments. Ultrasonication treatment had different effects on microalgae growth depending on whether it was a single treatment (SUT) or multiple-intermittent treatments (IUT). The removal of sulfonamide antibiotics was significantly improved by both SUT and IUT, with IUT showing a higher removal rate.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Nikita Yadav, Hyun-Jo Ahn, Niraj R. Rane, Mayur B. Kurade, Xiaofang Li, Young-Kwon Park, Moonis Ali Khan, Woo Jin Chung, Soon Woong Chang, Byong-Hun Jeon
Summary: This study assessed the potential of three aquatic macrophytes (Iris pseudacorus, Ipomoea aquatica, and Typha angustifolia) to remove BPS from secondary wastewater effluent. The results showed that these plants could remove BPS at a concentration of 0.005 mg/L with removal rates of 100%, 97%, and 97.5% for I. pseudacorus, I. aquatica, and T. angustifolia, respectively. Twelve biotransformed products of BPS were identified, and a lab-scale vertical phytoreactor was constructed to completely remove BPS along with nutrients and inorganic contaminants from the wastewater.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Environmental Sciences
Apurva Kakade, Monika Sharma, El-Sayed Salama, Peng Zhang, Lihong Zhang, Xiaohong Xing, Jianwei Yue, Zhongzhong Song, Lan Nan, Yujun Su, Xiangkai Li
Summary: The presence of heavy metals in aquatic ecosystems is a concern due to their accumulation in aquatic organisms and the toxic effects they cause. The use of dietary probiotics as a potential approach to remove heavy metals from the gut, known as gut remediation, has been discussed. However, there is a lack of comprehensive reviews on the toxic effects of heavy metals at each trophic level and the protective strategies of probiotics. This review summarizes the toxic effects of heavy metals in the organisms of the aquatic food chain and explains the potential of bacterial probiotics in alleviating toxicity and preventing toxicities caused by heavy metals.
ENVIRONMENTAL RESEARCH
(2023)
Article
Energy & Fuels
Thi Ngoc Bao Dung, Chyi-How Lay, D. Duc Nguyen, S. Woong Chang, J. Rajesh Banu, Youngsun Hong, Jeong-Hoon Park
Summary: Macroalgae is a promising resource for biofuel production. Effective pretreatment using a disperser and acid can significantly increase biohydrogen production.
Article
Environmental Sciences
Joshua Alvey, Subhabrata Dev, Oscar Quinones, Eric Dickenson, Srijan Aggarwal, Aaron Dotson
Summary: The treatment of micropollutant-contaminated water using photocatalytic membrane reactors (PMRs) can be improved by designing a PMR with a photocatalytic active layer on the membrane surface. This study compared the efficiency of commercially available membranes with two different catalysts (ZrO2 and TiO2) under different UV light conditions for the degradation of para-chlorobenzoic acid (pCBA) and organic micropollutants. The results show that vacuum UV (VUV) had higher micro-pollutant degradation compared to low-pressure UV (LUV), and the presence of the membrane improved the degradation efficiency. The study suggests the potential for developing a pilot-scale VUV-equipped PMR for treating micropollutant-contaminated water.
Article
Environmental Sciences
Ghulam Mustafa, Muhammad Tariq Zahid, Mayur Bharat Kurade, Swapnil Mahadeo Patil, Farah Rauf Shakoori, Zeeshan Shafiq, Sidra Ihsan, Yongtae Ahn, Azmat Ali Khan, Amel Gacem, Byong-hun Jeon
Summary: This study successfully overexpressed the AzK gene in Escherichia coli for the efficient degradation of Remazol Red-R and Acid-Blue 29 dyes. Optimal conditions were determined as 1.5% inoculum size, 0.5 mM IPTG concentration, and 6 hours incubation time. The crude extract achieved 76% and 74% decolorization of RRR and AB-29, while the purified enzyme achieved 94% and 93% decolorization within 0.3 hours. Kinetic analysis revealed the enzymatic characteristics and HPLC and GC-MS analyses confirmed the effective biotransformation of dyes into less toxic metabolites. This study highlights the potential of recombinant azoreductase for the degradation of textile azo dyes.
ENVIRONMENTAL POLLUTION
(2023)
Article
Engineering, Environmental
Nikita Yadav, Hyun-Jo Ahn, Mayur B. Kurade, Yongtae Ahn, Young -Kwon Park, Moonis Ali Khan, El-Sayed Salama, Xiangkai Li, Byong-Hun Jeon
Summary: This study evaluated the toxicity of five common bisphenols (BPs) on the freshwater microalga Chlamydomonas mexicana and the removal of BPs by the alga. BPAF, BPB, and BPZ showed higher toxicity to C. mexicana compared to BPS and BPF. The alga effectively removed BPs, with removal rates ranging from 61% to 99%. The results provide important information on the ecotoxicity of these BPs and their removal by C. mexicana, and the resulting biomass has potential for biodiesel production.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Medicine, Research & Experimental
Haibo Tang, Tuoyu Zhou, Weilin Jin, Simin Zong, Tursunay Mamtimin, El-Sayed Salama, Byong-Hun Jeon, Pu Liu, Huawen Han, Xiangkai Li
Summary: This study aimed to construct a tumor-targeting engineered probiotic for colorectal cancer (CRC). The results showed that Azurin caused apoptosis in CT26 cells and Ep-AH treatment relieved symptoms in CRC mice and modulated the gut microbiota composition and metabolic pathways. This study provides an effective strategy for anti-CRC treatment.
Article
Engineering, Environmental
Ankur Sachan, Subhabrata Dev, Tathagata Ghosh, Srijan Aggarwal, Fahimeh Dehghani, Michael Martinez, Brandon R. Briggs
Summary: This study explores the biorecovery of rare earth elements (REEs) from coal mines in Alaska using Shewanella oneidensis MR-1. The results show that optimizing the bioweathering process leads to high REE recovery, especially for certain individual REEs. This research highlights the potential for developing cost-effective and selective REE biorecovery processes.
ACS ES&T ENGINEERING
(2023)
Review
Engineering, Environmental
Mohammed Yusuf, Ramesh Kumar, Moonis Ali Khan, M. J. Ahmed, Marta Otero, Subbaiah Muthu Prabhu, Moon Son, Jae-Hoon Hwang, Woo Hyoung Lee, Byong-Hun Jeon
Summary: Biogas and natural gas have the potential to be renewable energy sources and need to be upgraded to increase their CH4 content. Adsorption-based methods using metal-organic frameworks (MOFs) could be an attractive option for upgrading. MOFs, as versatile porous solid-state materials, have various unique properties and can play a significant role in gas adsorption and storage.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Thermodynamics
Hafiz Muhammad Ali, Tauseef-ur Rehman, Muesluem Arici, Zafar Said, Benjamin Durakovic, Hayder I. Mohammed, Rajan Kumar, Manish K. Rathod, Ozge Buyukdagli, Mohamed Teggar
Summary: Thermal energy storage is becoming increasingly important due to the challenges posed by intermittent renewable energy and waste heat dissipation. This paper discusses the fundamentals and novel applications of thermal energy storage materials and presents a multi-criteria decision making approach to select suitable materials. Recent advancements include materials with enhanced thermal conductivity and multiple phase change temperatures, as well as the application of nanomaterials and shape-stabilized materials in thermal energy storage.
PROGRESS IN ENERGY AND COMBUSTION SCIENCE
(2024)
Review
Thermodynamics
Xuesong Li, Shangning Wang, Shangze Yang, Shuyi Qiu, Zhe Sun, David L. S. Hung, Min Xu
Summary: This review article summarizes recent advances in flash boiling atomization using experimental approaches. It discusses the gas-liquid characteristics and primary breakup of flash boiling sprays, the characteristics of flash boiling spray plumes, and practical issues in adopting flash boiling atomization. Practical applications of flash boiling atomization in combustors are also presented.
PROGRESS IN ENERGY AND COMBUSTION SCIENCE
(2024)
Review
Thermodynamics
Yusheng Zheng, Yunhong Che, Xiaosong Hu, Xin Sui, Daniel-Ioan Stroe, Remus Teodorescu
Summary: This paper provides a comprehensive review of temperature estimation techniques in battery systems, discussing potential metrics, different estimation methods, and their strengths and limitations in battery management. The challenges and future opportunities in battery thermal state monitoring are also identified and discussed.
PROGRESS IN ENERGY AND COMBUSTION SCIENCE
(2024)
