Article
Engineering, Environmental
Siyi Chen, Zunaira Habib, Zhiwei Wang, Pin Zhao, Weilong Song, Xinhua Wang
Summary: A novel wastewater treatment technology was developed using a two-stage forward osmosis process and anaerobic acidification membrane bioreactor to improve the recovery efficiency of organic matter and nutrients in wastewater.
Article
Environmental Sciences
Sangho Lee, Young-Min Kim, Muhammad Zain Siddiqui, Young-Kwon Park
Summary: Thermogravimetric analysis and pyrolyzer-gas chromatography/mass spectrometry were used to study the kinetic behavior and product distribution of thermal and catalytic pyrolysis of different types of sewage sludge. Municipal sewage sludge (MSS) has a lower activation energy and produces more fatty acids and cholesterol than livestock manure sewage sludge (LMSS). By using a different catalyst, the product distribution of MSS can be altered, increasing the yield of aromatic hydrocarbons.
ENVIRONMENTAL POLLUTION
(2021)
Article
Engineering, Environmental
Yun Chen, Roby Ruhyadi, Jinjin Huang, Wang Yan, Guoxiang Wang, Nan Shen, Wido Hanggoro
Summary: A novel strategy of initiating fermentation at a pH of 10 was developed to improve VFA purity, P removal efficiency, and fermented sludge dewaterability during WAS fermentation. Despite lower VFAs concentration in RIA compared to RDC, the purity of VFAs in the fermented liquid was improved, TP release was lower, and dewaterability of fermented sludge was enhanced. The amount of alkali needed was significantly reduced in RIA, leading to cost savings in operational costs for each ton of TS processed.
Article
Engineering, Environmental
Hongju Lin, Yanchang Chu, Mingyu Xie, Le Yang, Gangfeng Ouyang
Summary: In this study, a series of nickel-based bimetallic catalysts supported on homemade SiO2 nanospheres were investigated for the decarboxylation of fatty acids. The NiCo/SiO2 catalyst showed the best performance, achieving high conversion and selectivity. The synergy between Ni and Co and the carbon resistance properties of homemade SiO2 contributed to the efficient decarboxylation reaction. The NiCo/SiO2 catalyst was also successfully applied for the upgrading of MS HTL bio-crude, resulting in a significant improvement in the theoretical higher heating value (HHV), indicating the potential for converting MS bio-crude to biofuels.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Ning Xie, Liping Zhong, Liao Ouyang, Wang Xu, Qinghuai Zeng, Keju Wang, Madiha Zaynab, Huirong Chen, Fangfang Xu, Shuangfei Li
Summary: Functional microorganisms in activated sludge play a crucial role in reducing environmental threats from municipal wastewater treatment plants. This study utilized Illumina NovaSeq sequencing to analyze microbial communities in different stages of two WWTP projects in Shenzhen, China. The results demonstrate the importance of nitrate, total nitrogen, COD, and nutrients in affecting bacterial community structure in AS.
Article
Environmental Sciences
Alice Muhorakeye, Roent Dune Cayetano, Naresh Kumar, Jungsu Park, Ashutosh Kumar Pandey, Sang-Hyoun Kim
Summary: Polyhydroxybutyrate (PHB), a natural polyester, was synthesized using volatile fatty acids (VFAs) as a substrate. Optimization tests were conducted to improve the biodegradability and hydrolysis of waste activated sludge. The results showed that SDBS pretreatment and pH adjustment during continuous acidogenesis yielded stable VFA conversion and high PHB production.
Article
Environmental Sciences
Mei Zou, Mengyu Yin, Yayi Yuan, Dongbo Wang, Weiping Xiong, Xiao Yang, Yaoyu Zhou, Hongbo Chen
Summary: Triclosan promotes volatile fatty acid accumulation in waste activated sludge anaerobic fermentation, accelerating acid production and enhancing key enzyme activity.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Sisi Chen, Xiaohu Dai, Dianhai Yang, Bin Dong
Summary: The study found that increasing the sludge age of waste activated sludge (WAS) led to a decrease in volatile fatty acids (VFAs) production and phosphorus (P) release, mainly due to limited protein degradation. Keeping the sludge age of WAS at a relatively low level (<10 days) is more suitable for utilizing it as internal carbon sources and P resources.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2021)
Article
Engineering, Environmental
Xuchuan Shi, Ling Zhu, Bing Li, Jiajin Liang, Xiao-yan Li
Summary: The study found that the addition of surfactants enhances the hydrolysis and organic solubilization of waste activated sludge during thermal hydrolysis pretreatment, resulting in improved dewaterability and organic production of the sludge. This surfactant-assisted technology is promising for WAS treatment, waste reduction, and resource recovery.
Article
Green & Sustainable Science & Technology
Heliang Pang, Junguo He, Yingqun Ma, Xinlei Pan, Yanshi Zheng, Huarong Yu, Zhongsen Yan, Jun Nan
Summary: The study developed a novel strategy for enhancing volatile fatty acids production from waste activated sludge using cation-exchange resin assistant anaerobic fermentation. The proposed process conditions achieved significant sludge disintegration and volatile fatty acids yield. The reusability tests showed that NaCl solution was the best for cation-exchange resin regeneration, with the regenerated resin performing comparably to the original resin.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
C. Vidal-Antich, N. Perez-Esteban, S. Astals, M. Peces, J. Mata-Alvarez, J. Dosta
Summary: The study investigated co-fermentation of waste activated sludge and food waste to produce carboxylic acids, showing higher yields compared to mono-fermentation. Co-fermentation yields increased with higher proportion of food waste in the mixture. pH played a crucial role in co-fermentation performance, with the need for a high enough proportion of sludge to maintain pH above 5.0. Fermenter conditions should prevent the enrichment of acetic acid-consuming microorganisms.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Zhipeng Zhang, Qian Ping, Wenjie Guo, Chen Cai, Yongmei Li
Summary: A novel approach involving co-fermentation of protein-rich biomass with Fe bound P compounds-bearing sludge is proposed to enhance phosphorus recovery. This method allows simultaneous recovery of phosphorus and VFAs resources, saving costs and producing high-purity struvite.
Article
Engineering, Environmental
Tao Liu, Yudong Song, Zhiqiang Shen, Yuexi Zhou
Summary: This study aimed to investigate the inhibitory effect of crotonaldehyde manufacture wastewater on biological acidification. The results showed the inhibitory effect of individual toxicants in the wastewater and their combined effect, with a significant contribution to the relative toxicity. Additionally, the biodegradation process of main toxicants differed, indicating the need for further pretreatment technology for wastewater treatment.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2021)
Article
Engineering, Environmental
Xianli Yang, Jingnan Yang, Xuran Liu, Sheng Gong, Xiaodi Ji, Jianmin Chang, Chenxi Li, Qinyi Pan, Dongbo Wang
Summary: Maximizing resource recovery by improving anaerobic treatment efficiency of waste activated sludge is crucial for reducing carbon emissions. This study proposed the co-treatment of waste activated sludge with sulfite-laden wastes and mackinawite to enhance anaerobic fermentation performance. The experimental results demonstrated that FeS/sulfite pretreatment promoted SCFAs production by decomposing sludge flocs, increasing key hydrolytic enzymes, and altering the functional traits of microorganisms.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Agricultural Engineering
Ruby Diaz, Soklida Hong, Ramesh Goel
Summary: Different ratios of VFAs as the primary feed were used in a biological nutrient reactor, which exhibited efficient removal of dissolved phosphorus and ammonium-nitrogen. The relative abundance of Candidatus Accumulibacter and Defluviicoccus genus increased and decreased, respectively, indicating the impact of VFAs on microbial communities. However, the high abundance of Defluviicoccus did not affect the stability and performance of the BNR process.
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Ning Li, Wei Zeng, Baogui Wang, Shuaishuai Li, Yu Guo, Yongzhen Peng
BIORESOURCE TECHNOLOGY
(2019)
Article
Biotechnology & Applied Microbiology
Ning Li, Wei Zeng, Zhijia Miao, Baogui Wang, Zaixing Li, Yongzhen Peng
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2019)
Article
Biotechnology & Applied Microbiology
Ning Li, Wei Zeng, Yanan Yang, Baogui Wang, Zaixing Li, Yongzhen Peng
BIOCHEMICAL ENGINEERING JOURNAL
(2019)
Article
Agricultural Engineering
Zhiwei Fan, Wei Zeng, Baogui Wang, Shuo Chang, Yongzhen Peng
BIORESOURCE TECHNOLOGY
(2019)
Article
Environmental Sciences
Ning Li, Wei Zeng, Yu Guo, Chao Li, Chenyang Ma, Yongzhen Peng
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2019)
Article
Engineering, Environmental
Qingan Meng, Wei Zeng, Baogui Wang, Zhiwei Fan, Yongzhen Peng
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Chemistry, Physical
Huanhuan Xu, Wei Zeng, Shuaishuai Li, Baogui Wang, Ziyue Jia, Yongzhen Peng
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2020)
Article
Biotechnology & Applied Microbiology
Baogui Wang, Wei Zeng, Ning Li, Yu Guo, Qingan Meng, Shuo Chang, Yongzhen Peng
ENZYME AND MICROBIAL TECHNOLOGY
(2020)
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)