Article
Energy & Fuels
Qiliang Ye, Jiang Zeng, Yuan Li, Peiqing Yuan, Fuchen Wang
Summary: By optimizing the phenols and ammonia recovery process, the new heat integration process saves 14.3% energy consumption and reduces the total annual cost by about 15.1% compared to the original process parameters. The new heat integration process provides guidance for the optimization of the phenols and ammonia recovery process.
Article
Engineering, Environmental
Shengqiang Hei, Hui Xu, Biming Liu, Xianzheng Zhu, Shuo Zhang, Xian Zhang, Renwei Li, Xia Huang
Summary: This study investigated the application of adsorbents in the pretreatment of coal gasification wastewater. The results showed that sepiolite and granular activated carbon had high removal efficiencies for high concentrations of organic pollutants. Sepiolite had a high removal efficiency for ammonia nitrogen, while granular activated carbon had a lower efficiency. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy confirmed the ability of sepiolite to adsorb organic pollutants through intermolecular forces, and sepiolite maintained a high COD removal efficiency after multiple cycles.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Chemical
Yujun Wang, Qingrui Zhang, Mengting Liu, Hong Liu, Yuanyuan Chen, Xiude Hu
Summary: This study investigated a method for removing phenolic substances from coal chemical wastewater. By selecting an appropriate extractant and optimizing the operational parameters, the concentration of phenolic substances was successfully reduced, achieving the desired treatment effect.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Zhe Li, Wende Tian, Xue Wang, Zhe Cui, Ye Tao, Suli Sun, Zhenfu Ma, Lu Chen
Summary: This paper proposes an integration system combining the source exploration of CPS and the optimum design of CPSW treatment. By simulating and optimizing the CPS process, a novel phenol extraction method and sodium sulfate electrolysis treatment process are designed to effectively dispose of CPSW and reduce energy consumption.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Environmental
Chengye Wang, Mengqi Zheng, Guowei Chen, Zipeng Yan, Binghan Xie, Wei Wang, Hongjun Han
Summary: In this study, a novel algal-microbial fuel cell (AMFC) was used to successfully separate and cleanse phenol and ammonium pollutants in coal gasification wastewater (CGW), and the biological process was explored. The AMFC with Synechocystis cathode showed superior performance, removing COD and NH4+-N more efficiently and achieving a higher maximum power density. Microbial community analysis revealed the key microorganisms in the biofilm and generated biomass, which played important roles in phenol degradation and biomass transformation.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Review
Environmental Sciences
Ning Yuan, Aijing Zhao, Zekai Hu, Kaiqi Tan, Jianbo Zhang
Summary: Coal gasification slag (CGS) is being recognized as a valuable resource for preparing porous materials with excellent adsorption performance for removing water pollutants, making it an effective and economical alternative solution. There are promising research prospects for further exploration in the development of CGS-based porous materials.
Review
Engineering, Environmental
Khairul Anwar Mohamad Said, Ahmad Fauzi Ismail, Zulhairun Abdul Karim, Mohd Sohaimi Abdullah, Asif Hafeez
Summary: The excessive amount of phenol found in water reservoirs, such as rivers and municipal drains, is a major contributor to the global scarcity of potable water. In recent years, special attention has been given to photocatalytic membranes for the treatment of polluted phenol water. Membrane technology, with its dual function of photocatalysis and sieving, may become a major trend in phenol removal in the future.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Engineering, Environmental
Fang Gao, Lingyun Li, Yanwei Shi, Xiaofei Xue, Jianhua Mao, Linlin Xing, Xiaoyan Yao
Summary: The study investigated the removal of pollutants in coal-to-hydrogen wastewater using the anoxic/aerobic membrane bioreactor (A/O-MBR) system. The results showed that the system effectively removed chemical oxygen demand, ammonia nitrogen, and total phenols. The study also used the Extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) approach to predict membrane fouling and cleaning mechanisms in the MBR system. The findings provided insights into the fouling and cleaning mechanisms of the MBR system and demonstrated the successful application of A/O-MBR for bio-refractory CGW treatment with NaClO chemically enhanced backwash.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Energy & Fuels
Fa-qiang Su, Tao Zhang, Jun-bo Wu, Qi-chao Deng, Akihiro Hamanaka, Yi-he Yu, Meng-jia Dai, Xiao-long He, Jun-nan Yang
Summary: In this paper, UCG simulation experiments were conducted to investigate the effects of the gasification agent ratio on the composition and calorific value of the product gas. An energy recovery evaluation method and an evaluation model of the underground coal gasification temperature field were established. The results showed that increasing the oxygen concentration improved the calorific value of the produced gas and the energy recovery rate.
Review
Biotechnology & Applied Microbiology
M. Concetta Tomei, Domenica Mosca Angelucci, Elisa Clagnan, Lorenzo Brusetti
Summary: Anaerobic biodegradation of toxic compounds in industrial wastewater is an attractive solution for energy and resource recovery, but faces challenges due to low kinetics compared to aerobic processes. Research on anaerobic phenol degradation focuses on microbiological and technological aspects to enhance competitiveness, with a gap still existing between aerobic and anaerobic performance. Efforts are needed to develop powerful technologies and effective strategies to improve the anaerobic process and move towards more sustainable wastewater treatment.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Zeynab Vanak, Sedigheh Asad, Seyed Mohammad Mehdi Dastgheib
Summary: The study focused on using a halotolerant strain of the genus Janibacter to remove phenol from saline wastewaters, showing that bacterial cells immobilized on mica and zeolite had higher removal efficiency, better thermostability, wider operating range, and longer reuse potential. The process involved complete destruction of phenol through the meta pathway involving phenol hydroxylase and catechol 2,3-dioxygenase enzymes, with zeolite-immobilized cells showing consistent efficiency even after 4 months of storage at low temperatures.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2023)
Article
Environmental Sciences
Cyntia Ely, Diego Hoefling Souza, Mylena Fernandes, Viviane Trevisan, Everton Skoronski
Summary: This study evaluated the bioconversion of phenols in biorefinery wastewater using Horseradish peroxidase (HRP) and the Fenton process. The enzymatic treatment achieved a phenol conversion rate of 97.5%, while the Fenton process was used as a complementary method for further phenol removal. The combination of HRP and Fenton proved to be effective in treating biorefinery wastewater and removing phenols.
ENVIRONMENTAL TECHNOLOGY
(2021)
Article
Engineering, Environmental
Chaoran Wan, Qiang Xie, Jinchang Liu, Dingcheng Liang, Xiaoqing Huang, Huabing Zhou, Yuegang Tang, Deqian Liu
Summary: The study proposes an adsorption method combining granular activated carbon (GAC) and zeolite as adsorbents for the removal of hazardous trace elements (HTEs) released during gasification, with promising results from pilot-scale experiments. Results showed that GAC derived from low rank bituminous coal has good adsorption performance for mercury, arsenic, and beryllium. Kinetics studies revealed that experimental data fit Pseudo-second order, and zeolite's ion exchange capacity greatly impacts its adsorption performance.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Energy & Fuels
Huifang Feng, Jingli Sun, Hui Jin, Jiajing Kou, Liejin Guo
Summary: The study found that adding phenol can increase coal gasification efficiency and inhibit char formation, leading to an increased hydrogen yield. Phenol effectively suppresses char formation and enhances char reactivity.
Article
Chemistry, Physical
Haitao Wang, Dongdong Zhang, Yiping Zhao, Manman Xie
Summary: This study aimed to improve the adsorption and removal function of attapulgite (ATP) for phenol by synthesizing a cationic surfactant Gemini and modifying ATP. The modified ATP showed better dispersibility and abundant active cationic groups on the surface. The positively charged modified ATP with a hydrophobic surface was able to interact with the phenol molecules through 7C-7C interaction and electrostatic attraction. The adsorption behavior followed the Freundlich isotherm model and the modified ATP showed good reusability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Green & Sustainable Science & Technology
Lars odegaard Bentsen, Narada Dilp Warakagoda, Roy Stenbro, Paal Engelstad
Summary: This study investigates uncertainty modeling in wind power forecasting using different parametric and non-parametric methods. Johnson's SU distribution is found to outperform Gaussian distributions in predicting wind power. This research contributes to the literature by introducing Johnson's SU distribution as a candidate for probabilistic wind forecasting.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Xing Liu, Qiuchen Wang, Yunhao Wen, Long Li, Xinfang Zhang, Yi Wang
Summary: This study analyzes the characteristics of process parameters in three lean gas ethane recovery processes and establishes a prediction and multiobjective optimization model for ethane recovery and system energy consumption. A new method for comparing ethane recovery processes for lean gas is proposed, and the addition of extra coolers improves the ethane recovery. The support vector regression model based on grey wolf optimization demonstrates the highest prediction accuracy, and the multiobjective multiverse optimization algorithm shows the best optimization performance and diversity in the solutions.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Cairong Song, Haidong Yang, Xian-Bing Meng, Pan Yang, Jianyang Cai, Hao Bao, Kangkang Xu
Summary: The paper proposes a novel deep learning-based prediction framework, aTCN-LSTM, for accurate cooling load predictions. The framework utilizes a gate-controlled multi-head temporal convolutional network and a sparse probabilistic self-attention mechanism with a bidirectional long short-term memory network to capture both temporal and long-term dependencies in the cooling load sequences. Experimental results demonstrate the effectiveness and superiority of the proposed method, which can serve as an effective guide for HVAC chiller scheduling and demand management initiatives.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Zhe Chen, Xiaojing Li, Xianli Xia, Jizhou Zhang
Summary: This study uses survey data from the Loess Plateau in China to evaluate the impact of social interaction on the adoption of soil and water conservation (SWC) technology by farmers. The study finds that social interaction increases the likelihood of farmers adopting SWC, and internet use moderates this effect. The positive impact of social interaction on SWC adoption is more pronounced for farmers in larger villages and those who join cooperative societies.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Chenghua Zhang, Yunfei Yan, Kaiming Shen, Zongguo Xue, Jingxiang You, Yonghong Wu, Ziqiang He
Summary: This paper reports a novel method that significantly improves combustion performance, including heat transfer enhancement under steady-state conditions and adaptive stable flame regulation under velocity sudden increase.
JOURNAL OF CLEANER PRODUCTION
(2024)