Article
Environmental Sciences
Xinlei Pan, Junfeng Li, Ruining He, Yu Tian, Heliang Pang
Summary: This study proposed a simplified operation mode, which improved anaerobic fermentation efficiency and organic matter recovery rate by shortening the CER residence time, reducing engineering costs and footprint.
Article
Environmental Sciences
Xinlei Pan, Junfeng Li, Ruining He, Yu Tian, Heliang Pang
Summary: By shortening the residence period of cation exchange resin (CER) to 1 day, higher sludge solubilization and hydrolysis rates can be achieved, leading to increased production of short-chain fatty acids (SCFAs). The modified operation pattern with shortened CER residence period (1 day) can achieve similar effects as the conventional operation pattern, while reducing CER usage, alleviating CER pollution and increasing operation convenience.
Article
Engineering, Chemical
Xinlei Pan, Xiang Zou, Junguo He, Heliang Pang, Pengfei Zhang, Yijie Zhong, Jie Ding
Summary: Using cation exchange resin as a novel extracellular polymer substance disruptor can enhance lysozyme-induced enzymolysis and solubilization of dissolved organic matters, resulting in increased production of short-chain fatty acids (SCFAs) from waste activated sludge. This coupled pretreatment showed higher SCFAs yield compared to sole lysozyme pretreatment.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
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
Agricultural Engineering
Junguo He, Heliang Pang, Xinlei Pan, Yanshi Zheng, Ling Wang, Jie Xu, Lin Li, Zhongsen Yan
Summary: The study proposed a cation-regulation strategy to enhance anaerobic fermentation of waste activated sludge, resulting in significant release of short-chain fatty acids. This approach can promote sludge degradation, disrupt extracellular polymeric substances, and facilitate sludge disposal and utilization.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Xinlei Pan, Junguo He, Heliang Pang, Pengfei Zhang, Xiang Zou, Yijie Zhong, Jie Ding
Summary: A novel pretreatment method using CER and NaCl was proposed to enhance SCFAs production by promoting WAS hydrolysis. The synergistic interaction between CER and NaCl triggered the release of sufficient organic substances, leading to successful SCFAs production under abundant biodegradable substrates.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
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
Agricultural Engineering
Qingshan Lin, Xinlei Dong, Jinming Luo, Qian Zeng, Jie Ma, Zongping Wang, Guanghao Chen, Gang Guo
Summary: This study investigated an alternative electrochemical pretreatment approach that facilitated acidogenic fermentation of waste activated sludge and food waste, resulting in enhanced production of volatile fatty acids.
BIORESOURCE TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Qinglian Wu, Heshan Zheng, Ying Chen, Min Liu, Xian Bao, Wanqian Guo
Summary: The study found that using alkylethoxyglucoside can significantly enhance the production of volatile fatty acids from waste activated sludge, and the degradation of AEG contributes to a certain extent to the total production, with AEG primarily promoting substrate hydrolysis and acidification by reducing surface charge.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Agricultural Engineering
Mengge Tang, Yanxin Wu, Xingning Zeng, Xiao Yang, Dongbo Wang, Hongbo Chen
Summary: This study clarifies the promoting effect of residual antibiotic chlortetracycline on the anaerobic fermentation of waste activated sludge to produce volatile fatty acids. Mechanistically, the study shows that the antibiotic enhances VFA production by prompting the secretion of extracellular polymeric substances and stimulating acidification, while inhibiting methanogenesis. These findings provide new insights for resource recovery from WAS containing chlortetracycline.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Hongbo Liu, Lu Dong, Xuedong Zhang, Cheng Zhao, Mingze Shi, Yajie Li, He Liu
Summary: Thermal hydrolysis is an effective method to improve the bioconversion of organic matter during sludge anaerobic treatment. Liquid fermentation for volatile fatty acids (VFAs) production using hydrolysate as the substrate has been successfully developed. The concentration of organics in the hydrolysate cannot be arbitrarily increased, and excessive hydrolysis intensity may produce non-biodegradable organics. The choice of appropriate hydrolysis intensity is crucial for the performance of sludge liquid fermentation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Environmental
Heliang Pang, Yumeng Xu, Yuyao Zhang, Qiao Wei, Dong Xu, Jinxuan Liu, Jinsuo Lu
Summary: This study investigated the effects of cation exchange and lysozyme on carbon source migration and proposed a new pattern for carbon source release. After short-term anaerobic fermentation, a satisfactory carbon recovery rate was achieved. The synergistic treatment of CE and lysozyme greatly improved the speed and performance of carbon source migration and recovery.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Environmental Sciences
Jin Li, Wenzhuo Xin, Jiahao Liang, Pengyin Shang, Yanke Song, Qinghong Wang, Mohamed Gamal El-Din, Muhammad Arslan, Shaohui Guo, Chunmao Chen
Summary: Volatile fatty acids (VFA) produced from waste activated sludge (WAS) have the potential for resource recovery in wastewater treatment plants. This study shows that adding refinery spent caustic (RSC) during alkaline fermentation of refinery WAS (RWAS) can enhance VFA production. The enrichment of certain bacteria, as well as increased activity of protease and alpha-glucosidase, contributes to the increased VFA yield. Additionally, the presence of sulfate and free ammonia in RSC likely promotes acetic acid production.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Agricultural Engineering
Xiupeng Jiang, Zhiyi Qin, Leiyu Feng, Yinguang Chen, Jianguang Chen, Xianzhong Zhang, Zhenguang Zhang, Yingqing Guo, Jing Sun
Summary: The presence of superfine sand in waste activated sludge was found to positively impact VFAs production, mainly by promoting acetic acid generation and increasing the abundance and activity of anaerobic functional microorganisms.
BIORESOURCE TECHNOLOGY
(2021)
Article
Engineering, Environmental
Gongduan Fan, Banghao Du, Jinjin Zhou, Zhongsen Yan, Yifan You, Jing Luo
Summary: This study successfully synthesized self-floating Ag2O/g-C3N4/hydrogel photocatalytic composites with a porous three-dimensional nanostructure, which showed good removal efficiency of Microcystis aeruginosa under visible light irradiation. Various factors influencing the performance of the photocatalyst were investigated, highlighting the potential practical applications in tackling harmful algal blooms in natural water bodies.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Biotechnology & Applied Microbiology
Tangwu Cui, Bo Yuan, Haiwei Guo, Hua Tian, Weimin Wang, Yingqun Ma, Changzhi Li, Qiang Fei
Summary: This study utilized a consortium of white rot fungi to enhance ligninolytic enzyme activity and achieved a 50% lignin degradation rate. The enzymatic activity from the consortium was significantly improved compared to monocultures, indicating a potential bioconversion route for lignin utilization.
BIOTECHNOLOGY FOR BIOFUELS
(2021)
Article
Engineering, Chemical
Zhongsen Yan, Zhenyu Lu, Xiaolei Chen, Gongduan Fan, Fangshu Qu, Heliang Pang, Heng Liang
Summary: A simultaneous membrane distillation-crystallization (SMDC) system was developed for gypsum scaling control, utilizing induced crystallization to delay membrane scaling. Results showed that seeding gypsum effectively restricted membrane scaling and wetting.
Article
Environmental Sciences
Shulian Wang, Bin Ji, Meng Zhang, Jun Gu, Yingqun Ma, Yu Liu
Summary: Tetracycline was found to inhibit ammonia-N removal in non-aerated microalgal-bacterial granular sludge by mainly affecting microalgal assimilation and chlorophyll production. The presence of tetracycline also led to decreased dissolved oxygen concentration and inhibition of microalgae containing green algae and cyanobacteria, indicating a decoupling of symbiosis in the microalgal-bacterial granular sludge.
ENVIRONMENTAL RESEARCH
(2021)
Article
Environmental Sciences
Shulian Wang, Lin Zhu, Bin Ji, Huan Hou, Yingqun Ma
Summary: The study investigated the performance of the microalgal-bacterial granular sludge (MBGS) process in treating municipal wastewater under outdoor conditions. The results showed varying removal efficiencies of COD, NH4+-N, and PO43--P during daytime and nighttime, with environmental fluctuations affecting microbial biomass and system stability. Additionally, changes in environmental factors resulted in shifts in microbial community composition, with filamentous microorganisms decreasing and Chlorella maintaining dominance in the eukaryotic community.
Article
Environmental Sciences
Yao Shen, Lin Zhu, Bin Ji, Siqi Fan, Yabin Xiao, Yingqun Ma
Summary: This study found that the frozen stored microalgal-bacterial granular sludge could be fully recovered within 21 days, with higher removal efficiency of ammonia under aeration conditions and higher removal efficiencies of organics and phosphorus under non-aeration conditions. The evolution of microbial community was influenced by different conditions, and aeration-free activation was more energy-saving.
Article
Environmental Sciences
Zhen Gao, Yingqun Ma, Yu Liu, Qunhui Wang
Summary: This study developed a co-fermentation strategy using waste cooking oil (WCO) and food waste for microbial lipid production. It was found that adjusting the pH values within a certain range could increase lipid production efficiency. The produced lipid could potentially be used for biodiesel production, leading to significant reductions in CO2 and SO2 emissions from global food waste.
ENVIRONMENTAL RESEARCH
(2022)
Article
Engineering, Environmental
Gongduan Fan, Junkai Zhang, Jiajun Zhan, Jing Luo, Jiuyang Lin, Fangshu Qu, Banghao Du, Dingsheng Tang, Binghan Xie, Zhongsen Yan
Summary: In this study, a recyclable self-floating photocatalyst was fabricated for effective inactivation of Microcystis aeruginosa, showing excellent stability and recyclability. The effects of the photocatalyst on algae were studied, and the photocatalytic inactivation mechanisms were obtained.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Jieya Zhou, Ran Ping, Hao Wu, Hongbo Liu, Xuming Wang, AiLing Ren, Shulei Tian, Yingqun Ma
Summary: The study developed a system called SEA-CBS to convert antibiotic fermentation residues into organic fertilizers, achieving a high removal rate of 99.9% for antibiotics. The fertilizer showed significant improvement in plant growth, and the study also investigated the attenuation rule of antibiotic residues in soil and the distribution of antibiotic resistant genes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Green & Sustainable Science & Technology
Heliang Pang, Qiangqiang Jiao, Junguo He, Zhiqiang Zhang, Ling Wang, Zhongsen Yan, Jinsuo Lu
Summary: This study investigates the use of alkaline hydrolase blend (AHB) incubation at initial pH 10.0 condition for enhancing anaerobic fermentation in waste activated sludge management. The results show that this method significantly increased the release of short-chain fatty acids (SCFAs) and promoted the hydrolysis and biodegradation of dissolved organic matters. The AHB-based strategy proves to be a cost-effective and carbon-beneficial technology for sludge management.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Heliang Pang, Lei An, Yuyao Zhang, Junguo He, Zhongsen Yan, Binghan Xie
Summary: Recent research has focused on the production of short-chain fatty acids (SCFAs) from waste activated sludge. This study investigated the use of sodium pyrophosphate (SP) to chelate divalent cations from sludge, resulting in improved sludge hydrolysis and carbon recovery.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Zhongsen Yan, Zhengshi Zhu, Haiqing Chang, Gongduan Fan, Qiankun Wang, Xianzhi Fu, Fangshu Qu, Heng Liang
Summary: The combination of membrane electrochemical reactor (MER) and membrane distillation (MD) allows for simultaneous control of membrane fouling and resource recovery. Compared to MD and MD without pretreatment, the MER-MD system can more effectively remove pollutants and reduce energy consumption and carbon emissions.
Article
Green & Sustainable Science & Technology
Yuchuan Meng, Qiao Zhong, Yujie Liu, Zhongsen Yan, Ying Liang, Haiqing Chang, Heng Liang, Radisav D. Vidic
Summary: This study aimed to find an effective cleaning method for organic fouling in membrane distillation (MD). The fouling characteristics of humic acid (HA), sodium alginate (SA), and bovine serum albumin (BSA) were investigated, along with the cleaning efficiency of different flushing methods. The results showed that the presence of calcium ions had a varying effect on fouling for different organics. NaOH flushing resulted in irreversible fouling, while DI water flushing showed good recovery for SA-induced fouling.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Pengyu Li, Tianlong Zheng, Lin Li, Yingqun Ma, Xiaoqin Zhou, Zhining Shi, Junxin Liu
Summary: This study found that the environmental conditions are suitable for wind and solar energy production, with an energy utilization rate of 77.06% and a running time of 8.73 hours. The removal of CODcr, NH4+-N, and total nitrogen mainly occurred in the biological contact oxidation reactor, while total phosphorus was removed in constructed wetlands. The wind-solar complementary system without battery power is the most economical mode, with increasing economic benefits over the life of the system.
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)