Article
Green & Sustainable Science & Technology
Chen Cai, Chongliang Hu, Wan Yang, Yu Hua, Lei Li, Donghai Yang, Xiaohu Dai
Summary: The study investigated the effects of post-thermal hydrolysis process (THP) temperature on methane yields, dewatering performance, and antibiotic resistance genes (ARGs) in sludge digestate. Results showed that temperatures above 160 degrees C were optimal, leading to increased methane yield, improved dewatering performance, and reduced abundance of ARGs. The energy balance analysis indicated that the AD-THP configuration could be a promising alternative for sustainable disposal of excess sludge, with a net energy output up to 372 kW.h/t DS.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Iryna Lanko, Jakub Hejnic, Jana Rihova-Ambrozova, Ivet Ferrer, Pavel Jenicek
Summary: The study compared the digestate quality of single-stage mesophilic and thermophilic AD and TPAD systems, showing that the TPAD system is the most beneficial in terms of organic matter degradation efficiency, dewaterability, and pathogenic safety.
Article
Green & Sustainable Science & Technology
Haixiao Guo, Lixin Tian, Yufen Wang, Tingting Zhu, Yindong Tong, Yiwen Liu
Summary: This study explores a new pretreatment strategy using beta-CD to enhance methane production and improve dewaterability of waste activated sludge in two-phase anaerobic digestion. Results show that beta-CD significantly increases methane yield and improves the solubilization and acidification processes of the sludge, as well as methane fermentation.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Wenbo Yu, Haoran Duan, Zhiyao Wang, Jiakuan Yang, Zhiguo Yuan, Min Zheng
Summary: This study proposes an optimal integrated strategy for recovery and carbon sink in anaerobically digested sludge management by considering low-valued recyclables recycling and non-recyclables reduction. Acid-elutriation effectively reduces the water content and volume of the sludge, improves its stability, and enhances the quality by removing metals. The study suggests potential opportunities for combining acid-elutriation with other treatment technologies to achieve enhanced dewatering performance.
RESOURCES CONSERVATION AND RECYCLING
(2022)
Article
Engineering, Environmental
Linan Xing, Mingyue Zheng, Christopher W. K. Chow, Xiulan Xin, Ye Li, Xiaohui Zhang, Qiangqiang Cheng
Summary: This study compared the dewatering capacity of two chemical coagulants, high-performance polyaluminum chloride (HPAC) and FeCl3, on mesophilic and thermophilic anaerobic digested sludge. The results showed that for mesophilic anaerobic digestion, the optimal dose of FeCl3 and HPAC to improve dewaterability was 5% g/g total suspended solids (TSS), with HPAC being superior to ferric chloride in removing loosely bound extracellular polymeric substances (LB-EPS) and tightly bound extracellular polymeric substances (TB-EPS). For thermophilic anaerobic sludge, HPAC was more effective than FeCl3 in improving dewaterability, with FeCl3 effectively removing TB-EPS and HPAC having better removal efficiency on soluble extracellular polymeric substances (S-EPS) and LB-EPS. Both coagulants showed potential in degrading EPS during thermophilic anaerobic digestion sludge treatment.
JOURNAL OF ENVIRONMENTAL ENGINEERING
(2023)
Review
Engineering, Environmental
Zhiyao Wang, Tao Liu, Haoran Duan, Yarong Song, Xi Lu, Shihu Hu, Zhiguo Yuan, Damien Batstone, Min Zheng
Summary: The study reviewed the current status and challenges of post-treatment technologies for anaerobically digested sludge, proposing a multi-target approach to achieve sludge volume reduction, stabilization, and metal solubilization. The authors suggested developing more methods to promote AD sludge management towards a more economically favorable, socially acceptable, and environmentally sustainable direction.
Article
Green & Sustainable Science & Technology
Haochi Zhang, Dejin Zhang, Yujun Zhou, Di Fang, Chunhong Cui, Jianru Liang, Bo Zhou, Mingjiang Zhang, Jiansheng Li, Lixiang Zhou
Summary: This study found that bioleaching was not effective for anaerobically digested sludge (ADS) compared to undigested sludge (UDS). The specific resistance to filtration of ADS increased during bioleaching, and the pH value of ADS remained unchanged at 7.97, while it decreased to 2.98 for UDS. Added Fe2+ was not detected as an energy source for ADS. Higher alkalinity and unavailable Fe2+ in ADS hindered the growth of Acidithiobacillus species. Aeration significantly deteriorated the dewaterability of ADS through bioleaching, with a drastic increase in sludge pH and slime EPS content.
Article
Engineering, Environmental
Tingting Xiao, Hui Wang, Xiankai Wang, Haibin Wu, Shijie Yuan, Xiaohu Dai, Bin Dong
Summary: By using heated modification drinking water sludge (HDWS) as a conditioner to enhance the dewaterability of waste activated sludge (WAS) through its properties, the collaborative disposal of drinking water sludge (DWS) and waste activated sludge (WAS) can be achieved. The mechanism of HDWS+O-3 enhanced WAS dewaterability was explained through pyridine-infrared analysis and density functional theory (DFT) calculations. The discovery of HDWS+O-3 applied to effectively enhance WAS dewaterability provides an inspiring perspective on the emerging DWS and WAS co-processing disposition.
Article
Materials Science, Paper & Wood
Keishi Tanifuji, Yukiyo Yamasaki, Toyohisa Miyamoto, Hiroyuki Shigemura
Summary: The effects of different types of plant biomass on the dewatering of digested sludge were studied, and it was found that grass fibrous materials as a dewatering aid had better performance.
Article
Engineering, Environmental
Huan Liu, Xuan Li, Ting Zhou, Zehao Zhang, Long D. Nghiem, Li Gao, Qilin Wang
Summary: This study comprehensively evaluated the impact of free ammonia (FA) pretreatment on the performance of anaerobic primary sludge (PS) digestion using semi-continuous systems. FA pretreatment improved the removal of volatile solids, chemical oxygen demand, and methane production. It also increased the biomass-specific hydrolysis rate of digesters. Model-based analysis revealed that the enhanced performance is due to the increased apparent hydrolysis rate and degradability extent of PS caused by FA pretreatment. Additionally, dewaterability of digested sludge and removals of fecal coliform and E. coli were enhanced by FA pretreatment.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Xiuqin Cao, Fei Wang, Ji Yang
Summary: The study investigated the effects of three conditioners (polyacrylamide, poly aluminum sulfate, and sludge biochar) and their combined conditioning on the dewatering performance of digested sludge. The results showed that the combined conditioner treatment had a better dewatering effect, and rheological indices could be used to evaluate the changes in dewatering performance.
ENVIRONMENTAL RESEARCH
(2023)
Article
Green & Sustainable Science & Technology
Wanqing Ding, Wenbiao Jin, Xu Zhou, Qinhui Yang, Chuan Chen, Qilin Wang
Summary: This study investigated the dewaterability of anaerobic granular sludge (AGS) by Fe(II)-PDS conditioning, finding that Fe(II)-PDS conditioning can enhance dewaterability by breaking down EPS layers and microbial cell structures, releasing bound water and facilitating sludge re-flocculation. Protein was identified as the primary component in AGS and showed a strong correlation with dewaterability.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Environmental
Fang Zhang, Ding-Kang Qian, Zi-Qian Geng, Kun Dai, Wei Zhang, Mark C. M. van Loosdrecht, Raymond Jianxiong Zeng
Summary: The hydrolysis of alginate, a main component of extracellular polymeric substances (EPS) in waste-activated sludge, is crucial for enhancing methane production. The alginate-degrading consortia (ADC) showed a significant increase in methane production and biological methane potential, indicating the importance of alginate in EPS for methane recovery. Future research should focus on investigating the microbial changes in ADC for stable digestion of waste-activated sludge.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2021)
Article
Engineering, Chemical
Taishan Liu, Xinyang Zhang, Guangchao Ding, Songgeng Li
Summary: This study proposes a novel sludge conditioning method incorporating sludge-based carbon (SBC) to improve sludge dewaterability. The co-conditioning method effectively reduces specific resistance to filtration, moisture content of the filter cake, and sludge compressibility coefficient, while increasing the net sludge solids yield. The mechanism involves a synergistic effect of coagulation, adsorption, and flocculation, with SBC optimizing coagulation by electrostatic neutralization and strengthening flocculation by bridging biopolymers and PAM.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Environmental
Huan Liu, Xuan Li, Zehao Zhang, Long D. Nghiem, Li Gao, Qilin Wang
Summary: This study demonstrated that pretreatment of secondary sludge with free ammonia enhanced volatile solids destruction and methane production in semi-continuous anaerobic digestion systems. The FA pretreatment also improved sludge dewaterability and pathogen removal efficiency, while reducing the volume of dewatered sludge and overall cost. These findings suggest a promising strategy to enhance sludge reduction in anaerobic digestion processes.
Article
Engineering, Chemical
Romesh P. Wijesiri, Gregory P. Knowles, Hasina Yeasmin, Andrew F. A. Hoadley, Alan L. Chaffee
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2019)
Article
Energy & Fuels
Qiongqiong He, Hasina Yeasmin, Andrew Hoadley, Ying Qi
Summary: The MTE process was found to be more effective for low-rank lignite, compressing residual moisture into smaller pores. In terms of chemical composition, LY wastewater had a higher content of organics, with majority compounds being acids followed by aromatic hydrocarbons.
INTERNATIONAL JOURNAL OF COAL PREPARATION AND UTILIZATION
(2022)
Article
Green & Sustainable Science & Technology
Tigabwa Y. Ahmed, Andrew F. A. Hoadley, Akshat Tanksale
Article
Chemistry, Multidisciplinary
Waqar Ahmad, Fan Liang Chan, Alan L. Chaffee, Huanting Wang, Andrew Hoadley, Akshat Tanksale
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2020)
Article
Green & Sustainable Science & Technology
Vinod Vijay Kumar, Yogendra Shastri, Andrew Hoadley
CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY
(2020)
Review
Engineering, Chemical
Gade Pandu Rangaiah, Zemin Feng, Andrew F. Hoadley
Review
Energy & Fuels
Md Tanvir Alam, Baiqian Dai, Xiaojiang Wu, Andrew Hoadley, Lian Zhang
Summary: Gasification or combustion of coal and biomass is the main form of power generation, but it leads to ash generation and subsequent slagging at high temperatures. Understanding ash properties and slag characteristics is crucial for improving gasifier/combustor facilities.
FRONTIERS IN ENERGY
(2021)
Article
Chemistry, Physical
Waqar Ahmad, Fan Liang Chan, Andrew Hoadley, Huanting Wang, Akshat Tanksale
APPLIED CATALYSIS B-ENVIRONMENTAL
(2020)
Article
Chemistry, Physical
Tigabwa Y. Ahmed, Akshat Tanksale, Andrew F. A. Hoadley
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Economics
Vinod Vijay Kumar, Yogendra Shastri, Andrew Hoadley
Review
Energy & Fuels
Prakash Aryal, Akshat Tanksale, Andrew Hoadley
Summary: This article reviews the economic prospects of catalytic RFV gasification of different biomass. The performance of RFV is compared to other gasification technologies, and the parameters affecting RFV performance are analyzed. The study also discusses the techno-economic factors affecting the cost of hydrogen.
Article
Chemistry, Physical
Prakash Aryal, Akshat Tanksale, Andrew Hoadley
Summary: Reactive Flash Volatilization (RFV) is an emerging thermochemical method for producing tar free hydrogen rich syngas from waste biomass at lower temperatures in a single stage catalytic reactor. The catalytic RFV of bagasse using different metal promoted Ni/Al2O3 catalysts was studied under steam rich and oxygen deficient conditions. The best results were obtained with Rh-Ni/Al2O3 catalyst, achieving a hydrogen concentration of 54.8% and a yield of 106.4 g-H2/kg bagasse. The presence of alkali and alkaline earth metal species enhanced the activity and stability of the catalyst. The hydrogen yield from bagasse was higher than that of woody biomass and comparable to microalgae.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Daniel Rojas Sanchez, Kaveh Khalilpour, Andrew F. A. Hoadley
Summary: This study investigates the potential environmental benefits of ethanol production through an electrocatalytic captured CO2 reduction system, demonstrating advantages in all environmental categories and particularly in the competitiveness against global warming, showcasing clear advantages when the energy carbon intensity is low.
SUSTAINABLE ENERGY & FUELS
(2021)
Article
Green & Sustainable Science & Technology
Daniel Rojas Sanchez, Andrew F. A. Hoadley, Kaveh Rajab Khalilpour
SUSTAINABLE PRODUCTION AND CONSUMPTION
(2019)
Article
Green & Sustainable Science & Technology
Vinod Vijay Kumar, Andrew Hoadley, Yogendra Shastri
SUSTAINABLE PRODUCTION AND CONSUMPTION
(2019)
Article
Engineering, Environmental
Xinping Zhang, Yuxin Guo, Xiaoyang Liu, Shun-Yu Wu, Ya-Xuan Zhu, Shao-Zhe Wang, Qiu-Yi Duan, Ke-Fei Xu, Zi-Heng Li, Xiao-Yu Zhu, Guang-Yu Pan, Fu-Gen Wu
Summary: This study develops a nanotrigger HCFT for simultaneous photodynamic therapy and light-triggered ferroptosis therapy. The nanotrigger can relieve tumor hypoxia, induce enhanced photodynamic reaction, and facilitate the continuation of Fenton reaction, ultimately leading to lethal ferroptosis in tumor cells.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Olumide Bolarinwa Ayodele, Toyin Daniel Shittu, Olayinka S. Togunwa, Dan Yu, Zhen-Yu Tian
Summary: This study focused on the semihydrogenation of acetylene in an ethylene-rich stream using two alloyed Pt catalysts PtCu and PtCo. The PtCu catalyst showed higher activity and ethylene yield compared to PtCo due to its higher unoccupied Pt d-orbital density. This indicates that alloying Pt with Cu is more promising for industrial relevant SHA catalyst.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Guowei Chen, Wen-Cheng Chen, Yaozu Su, Ruicheng Wang, Jia-Ming Jin, Hui Liang, Bingxue Tan, Dehua Hu, Shaomin Ji, Hao-Li Zhang, Yanping Huo, Yuguang Ma
Summary: This study proposes an intramolecular dual-locking design for organic luminescent materials, achieving high luminescence efficiency and performance for deep-blue organic light-emitting diodes. The material also exhibits unique mechanochromic luminescence behavior and strong fatigue resistance.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Joren van Stee, Gregory Hermans, Jinu Joseph John, Koen Binnemans, Tom Van Gerven
Summary: This work presents a continuous solvent extraction method for the separation of cobalt and nickel in a millifluidic system using Cyphos IL 101 (C101) as the extractant. The optimal conditions for extraction performance and solvent properties were determined by investigating the effects of channel length, flow rate, and temperature. The performance of a developed manifold structure was compared to a single-channel system, and excellent separation results were achieved. The continuous separation process using the manifold structure resulted in high purity cobalt and nickel products.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Yan Xu, Jingai Jiang, Xinyi Lv, Hui Li, Dongliang Yang, Wenjun Wang, Yanling Hu, Longcai Liu, Xiaochen Dong, Yu Cai
Summary: A programmed gas release nanoparticle was developed to address the challenges in treating diabetic infected wounds. It effectively removes drug-resistant pathogens and remodels the wound microenvironment using NO and H2S. The nanoparticle can eliminate bacteria and promote wound healing through antibacterial and anti-inflammatory effects.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Tong Xia, Zhilin Xi, Lianquan Suo, Chen Wang
Summary: This study investigated a highly efficient coal dust suppressant with low initial viscosity and high adhesion-solidification properties. The results demonstrated that the dust suppressant formed a network of multiple hydrogen bonding cross-linking and achieved effective adhesion and solidification of coal dust through various chemical reactions.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jinzhi Cai, Zhenshan Li
Summary: A density functional theory-based rate equation was developed to predict the gas-solid reaction kinetics of CaO carbonation with CO2 in calcium looping. The negative activation energy of CaO carbonation close to equilibrium was accurately predicted through experimental validation.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jianxiong Chen, Fuhao Ren, Ningning Yin, Jie Mao
Summary: This study presents an economically efficient and easily implementable surface modification approach to enhance the high-temperature electrical insulation and energy storage performance of polymer dielectrics. The self-assembly of high-insulation-performance boron nitride nanosheets (BNNS) on the film surface through electrostatic interactions effectively impedes charge injection from electrodes while promoting charge dissipation and heat transfer.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Zijian Li, Zhaohui Yang, Shao Wang, Hongxia Luo, Zhimin Xue, Zhenghui Liu, Tiancheng Mu
Summary: This study reports a strategy for upgrading polyester plastics into value-added chemicals using electrocatalytic methods. By inducing the targeted transfer of *OH species, polyethylene terephthalate was successfully upgraded into potassium diformate with high purity. This work not only develops an excellent electrocatalyst, but also provides guidance for the design of medium entropy metal oxides.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Navneet Singh Shekhawat, Surendra Kumar Patra, Ashok Kumar Patra, Bamaprasad Bag
Summary: This study primarily focuses on developing a sulphur dyeing process at room temperature using bacterial Lysate, which is environmentally friendly, energy and cost effective, and sustainable. The process shows promising improvements in dye uptake and fastness properties.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Dengjia Shen, Hongyang Ma, Madani Khan, Benjamin S. Hsiao
Summary: This study developed cationic PVC nanofibrous membranes with high filtration and adsorption capability for the removal of bacteria and hexavalent chromium ions from wastewater. The membranes demonstrated remarkable performance in terms of filtration efficiency and maximum adsorption capacity. Additionally, modified nanofibrous membranes were produced using recycled materials and showed excellent retention rates in dynamic adsorption processes.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Xiaoyan Wang, Zhikun Wang, Ben Jia, Chunling Li, Shuangqing Sun, Songqing Hu
Summary: Inspired by photosystem II, self-supported Fe-doped NiCoP nanowire arrays modified with carboxylate were constructed to boost industrial-level overall water splitting by employing the concerted proton-coupled electron transfer mechanism. The introduction of Fe and carboxyl ligand led to improved catalytic activity for HER and OER, and NCFCP@NF exhibited long-term durability for overall water splitting.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Pengyao Yu, Ge Yang, Yongming Chai, Lubomira Tosheva, Chunzheng Wang, Heqing Jiang, Chenguang Liu, Hailing Guo
Summary: Thin LTA zeolite membranes were prepared through secondary growth of nano LTA seeds in a highly reactive gel, resulting in membranes with superior permeability and selectivity in gas separation applications.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Baiqin Zhou, Huiping Li, Ziyu Wang, Hui Huang, Yujun Wang, Ruichun Yang, Ranran Huo, Xiaoyan Xu, Ting Zhou, Xiaochen Dong
Summary: The use of machine learning to predict the performance of specific adsorbents in phosphate adsorption shows great promise in saving time and revealing underlying mechanisms. However, the small size of the dataset and insufficient detailed information limits the model training process and the accuracy of results. To address this, the study employs a fuzzing strategy that replaces detailed numeric information with descriptive text messages on the physiochemical properties of adsorbents. This strategy allows the recovery of discarded samples with limited information, leading to accurate prediction of adsorption amount, capacity, and kinetics. The study also finds that phosphate uptake by adsorbents is generally through physisorption, with some involvement of chemisorption. The framework established in this study provides a practical approach for quickly predicting phosphate adsorption performance in urgent scenarios, using easily accessible information.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Paula Alejandra Lamprea Pineda, Joren Bruneel, Kristof Demeestere, Lisa Deraedt, Tex Goetschalckx, Herman Van Langenhove, Christophe Walgraeve
Summary: This study evaluates the use of four esterified fatty acids and three vegetable oils as absorption liquids for hydrophobic VOCs. The experimental results show that isopropyl myristate is the most efficient liquid for absorbing the target VOCs.
CHEMICAL ENGINEERING JOURNAL
(2024)