Article
Environmental Sciences
Zhi-Xiang Xu, Yi Tan, Xue-Qin Ma, Bin Li, Yong-Xing Chen, Bo Zhang, Sameh M. Osman, Jing-Yang Luo, Rafael Luque
Summary: This study presents a method for designing wood bio-adhesives using sewage sludge extracts (SSE). The SSE was obtained from sewage sludge using deep eutectic solvents, and then processed with glycerol triglycidyl ether (GTE) to disrupt protein structure. The bio-adhesive produced had sufficient wet shear strength and improved quality through Maillard reaction and dehydration. This method offers a more environmentally friendly and economically efficient approach for utilizing sewage sludge and developing bio-adhesives for the wood industry.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Joanna Boguniewicz-Zablocka, Iwona Klosok-Bazan, Andrea G. Capodaglio
Summary: The sustainable management of biosolids from wastewater treatment is crucial, especially with the ban of some disposal options in many European countries. Solar drying technology offers a cost-efficient and energy-saving alternative to traditional thermal drying methods, with successful applications in countries like Germany and Poland. Research is being done on improving the efficiency of solar drying for sewage sludge, in line with the new National Waste Management Plan of Poland.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Chemical
Xinzhu Mou, Zhenqian Chen
Summary: The study found that ultrasound has an impact on the drying time and rate of sludge with different thicknesses. Within a certain range, thicker sludge results in a longer duration of the first falling rate stage and a less effective promotion of drying rate, with the situation being the opposite during the constant rate stage. Among sludges with thicknesses of 5 mm, 10 mm, and 15 mm, the most significant decrease in total drying time and energy consumption was observed in the sludge with a thickness of 10 mm under different power ultrasound assistance. Thinner sludge shows less obvious effects of ultrasound on effective moisture diffusivity, while thicker sludge exhibits the opposite trend.
Article
Energy & Fuels
Zhidong Chen, Yichen Hou, Mingyu Liu, Guoqiang Zhang, Kai Zhang, Dongke Zhang, Lijun Yang, Yanqiang Kong, Xiaoze Du
Summary: A system integrating sewage sludge drying, incineration, and power generation was proposed and analyzed in terms of thermodynamics and economics. Among the three alternative schemes considered, Scheme 2 showed the best performance with the lowest electricity cost and a relatively short payback period.
Article
Green & Sustainable Science & Technology
Osvaldo Moiambo, Raul Mutevuie, Filipa Ferreira, Jose Matos
Summary: This research introduces a mathematical model for assessing the dewatering process of faecal sludge in drying beds. In developing countries, the low-cost treatment technology based on gravity drainage and evaporation processes is widely adopted.
Article
Engineering, Chemical
Wenyi Deng, Li Yu, Yusong Chen, Guang Chen, Piren Zhou, Fengguo Tian, Yaxin Su
Summary: By incorporating a heat recovery system into an industrial-scale sludge drying system, this study successfully reduced energy consumption and sludge flow resistance, while improving water consumption efficiency in the spray tower. Theoretical modeling revealed the occurrence of wall slip phenomenon during sludge flow, affecting the preheating process of the sludge.
Article
Engineering, Environmental
Saly Ina Drame, Oluwasuyi Ayobami Oba, Nur Pasaoglulari Aydinlik
Summary: Providing a cost-effective and suitable way for sewage sludge refinement with the purpose of reducing environmental impacts or reutilization of sewage sludge can be an important issue for researchers. This study aims to bring an economical and sustainable solution to sludge management in a municipal wastewater treatment plant. The experimental analysis showed that the solar drying system was very efficient in achieving a high dry solid content for all three types of sludge.
WATER SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Environmental
Wenyi Deng, Jie Zhou, Li Yu, Sirui Pan, Jiamin Xiao, Zhichen Lai, Yaxin Su
Summary: This study aims to reduce sludge-to-wall adhesion by forming a water layer induced by boundary electro-osmotic pulse (BEOP). The effects of various parameters on adhesive stress of sewage sludge with different moisture content were studied, along with investigations on the migration of water, ions, and organic matters to explore the functional mechanism of BEOP.
Article
Biotechnology & Applied Microbiology
Anna Witek-Krowiak, Katarzyna Gorazda, Daniel Szopa, Krzysztof Trzaska, Konstantinos Moustakas, Katarzyna Chojnacka
Summary: This review discusses the most important ways to recover phosphorus from biowaste, focusing on wastewater, sewage sludge, manure, slaughter or food waste. Combining biological, chemical, and physical methods with thermal treatment appears to be the most effective way for phosphorus recovery from wastewater sludge. Chemical methods seem to be the optimal solution for animal by-products and other biological waste. Additional treatment is needed for wastewater to recover the highest possible amount of phosphorus.
Article
Environmental Sciences
Malgorzata Wzorek
Summary: The paper presents the results of drying biofuels from sewage sludge using solar energy. The study showed that drying biofuels in a 10-cm thick layer is beneficial, especially in spring and fall. In summer, all biofuels can reach moisture content below 10% after an average of 4 days.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Jiali Guo, Lei Zheng, Zifu Li
Summary: Microwave drying is an energy efficient method that has been gaining attention. In this study, a pilot-scale microwave dryer was used to dry two types of sewage sludge, showing that output power has the largest influence on specific energy consumption, drying efficiency, and energy efficiency.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Review
Environmental Sciences
Wei Ling, Yi Xing, Chen Hong, Bo Zhang, Jiashuo Hu, Chengwang Zhao, Yijie Wang, Lihui Feng
Summary: This paper systematically reviews the convective drying technology of sludge, including the effects of various factors on the drying effect, the different stages of drying process, and the application of mathematical models. It also discusses the mechanisms of sludge shrinkage formation and sludge viscosity resistance during drying, as well as the main dry tail gases and restraining methods. This paper provides a structured reference for future research on sludge convective drying.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Dexiao Ma, Guozhao Ji, Lei Zhang, Dong Wang, Qi Liu, Fahim Ullah, Aimin Li
Summary: Mechanical compression can decrease the interfacial thermal resistance in sludge drying process, improving drying rates and efficiency. Increasing temperature and mechanical load, as well as decreasing thickness, can enhance drying rates, and the drying process involves a warm-up period and two falling rate periods.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Energy & Fuels
Beibei Yan, Yuechi Che, Xutong Wang, Yingxiu Zhang, Jian Li, Zeng Dan, Keke Chang
Summary: This study investigates the feasibility of applying composting to Tibet and establishes a water-waste-nutrient nexus model to evaluate its environmental impacts and economic value. The experimental and modeling results both suggest that composting can effectively reduce the use of chemical fertilizers and increase economic benefits.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Environmental Sciences
Amal An-nori, Loubna El Fels, Amine Ezzariai, Bouchra El Hayani, Khalil El Mejahed, Mohamed El Gharous, Mohamed Hafidi
Summary: This study aimed to evaluate the effectiveness of solar drying on reducing helminth eggs in sewage sludge from a wastewater treatment plant in Marrakesh. The results showed a significant reduction in total helminth eggs, but poor removal of Ascaris eggs. Additionally, liming did not show a significant synergistic effect on helminth egg reduction during solar drying.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Yujun Shen, Haibin Zhou, Haibo Meng, Rui Guo, Guodi Zheng, Tongbin Chen
WASTE AND BIOMASS VALORIZATION
(2020)
Article
Engineering, Environmental
Junwan Liu, Guodi Zheng
Article
Environmental Sciences
Guodi Zheng, Xiankai Wang, Tongbin Chen, Jun Yang, Junxing Yang, Junwan Liu, Xiaoxiao Shi
ENVIRONMENTAL RESEARCH
(2020)
Article
Engineering, Environmental
Lu Cai, Meng-Ke Cao, Tong-Bin Chen, Han-Tong Guo, Guo-Di Zheng
Summary: The research found that adding a synthetic amendment can significantly improve the moisture content and germination index of composting materials while yielding mature composting products. An optimal proportion of synthetic amendment can enhance the degree of humification and biodegradation in composting, maintaining sustainable resource utilization.
Article
Environmental Sciences
Junmei Guo, Guodi Zheng, Junxing Yang, Tongbin Chen, Xiaofei Meng, Tianxiang Xia
Summary: Compared with phytoextraction, growing suitable crops may be a more profitable and practical approach for managing contaminated farmland, but the cultivation of amaranth and Hylotelephium spectabile cannot rapidly and inexpensively remediate contaminated farmland.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Environmental
Bao Yu, Tongbin Chen, Guodi Zheng, Junxing Yang, Xue Huang, Lili Fu, Lu Cai
Summary: This study explored the water-heat balance and the influence of air circulation on water removal and heat recovery in bio-drying plants with circulated air. The findings provide insights for optimizing the bio-drying process conditions and improving its efficiency through analysis of the water-heat relationship.
Article
Geochemistry & Geophysics
Xiaofei Meng, Junxing Yang, Guodi Zheng, Tianxiang Xia
Summary: Red mud treatments can reduce the availability of Cd in soil and decrease Cd absorption by rice. This is achieved by adjusting the soil pH, increasing iron and manganese concentrations, and immobilizing Cd through the formation of iron plaques on the root surface.
Article
Agricultural Engineering
Guodi Zheng, Yuan Cheng, Yanli Zhu, Junxing Yang, Lei Wang, Tongbin Chen
Summary: This research revealed that hydrogen sulfide and ammonia are the major odorants emitted during sewage sludge composting, with volatile sulfur compounds being mainly produced in the mesophilic and pre-thermophilic phases, and ammonia being mainly produced in the thermophilic phase. Furthermore, the microbial communities in different phases showed correlations with odor production.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Mengqiu Li, Zhuze Shao, Guodi Zheng
Summary: Sampling at different waste sites in Suzhou revealed that anaerobic digestion plants and transfer stations were the main sources of VOCs and ozone formation, as well as odor pollution. The VOC emissions from the anaerobic digestion plant reached up to 31.8 mg/m3, followed by the transfer station at 22.9 mg/m3. The study provides valuable information for reducing ozone formation potential and odor pollution in municipal solid waste management.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Environmental Sciences
Xinyi Duan, Yan Chen, Lingqing Wang, Guodi Zheng, Tao Liang
Summary: Decades of human activities have led to significant changes in land use and land cover, impacting the ecosystem service value in the ecologically fragile Sanjiangyuan region of the Qinghai-Tibet Plateau. The study finds that LULC changes in the region have caused both increases and decreases in ESV. Future predictions suggest a continued decrease in ESV due to LULC changes.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Agronomy
Yuan Liu, Junwan Liu, Guodi Zheng, Junxing Yang, Yuan Cheng
Summary: The addition of zero-valent iron (ZVI) has significant effects on the emission of NH3 and H2S during sewage sludge composting. It can also increase the heating rate, peak temperature, and promote dewatering and decomposition of the compost pile. The best effect on NH3 emissions is achieved with the addition of 3% ZVI, while 2% ZVI is most effective for reducing H2S emissions. Higher addition of ZVI is more effective in reducing moisture content and increasing the germination index of the compost.
Article
Environmental Sciences
Lu Cai, Meng-Ke Cao, Guo-Di Zheng, Xin-Yu Wang, Han-Tong Guo, Tao Jiang
Summary: This study investigated the effect of photocatalysis-mediated EPS degradation on sludge dewatering performance, and found that photocatalysis can efficiently degrade carbohydrates and proteins in EPS, improving sludge dewaterability.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Green & Sustainable Science & Technology
Mengke He, Junxing Yang, Guodi Zheng, Junmei Guo, Chuang Ma
Summary: A field trial was conducted in Jiyuan City, Henan Province, China to determine the feasibility of planting rapeseed in heavy metals (HMs)-contaminated farmlands. The results showed that rapeseed had low cadmium (Cd) and lead (Pb) concentrations and met safety standards. Additionally, rapeseed cultivation demonstrated economic benefits and could be a viable approach for safely utilizing HMs-contaminated farmland caused by atmospheric deposition in Northern China.
Article
Biotechnology & Applied Microbiology
Guodi Zheng, Yuan Liu, Yongjie Li, Junwan Liu, Junxing Yang
Summary: Adding potassium nitrate during sewage sludge composting can effectively inhibit the emissions of volatile sulfur compounds and improve the physicochemical properties of compost products.
BIOENGINEERING-BASEL
(2022)
Article
Environmental Sciences
Erqi Nie, Guodi Zheng, Chuang Ma
ATMOSPHERIC ENVIRONMENT
(2020)
Article
Engineering, Environmental
Rong-Gui Zhu, Chang-Gui Pan, Feng-Jiao Peng, Chao-Yang Zhou, Jun-Jie Hu, Kefu Yu
Summary: This comprehensive survey investigated the occurrence, bioaccumulation, and trophic magnification of parabens and their metabolite 4-HB in a marine food web. Results showed that parabens were the predominant pollutants in marine organisms, with significant bioaccumulation from sediments. The estimated trophic magnification factor indicated biomagnification for MeP and trophic dilution for 4-HB. Overall, the risks for humans consuming marine organisms were found to be low.
Article
Engineering, Environmental
Andres F. Torres-Franco, Deborah Leroy-Freitas, Cristina Martinez-Fraile, Elisa Rodriguez, Pedro A. Garcia-Encina, Raul Munoz
Summary: Anaerobic and microalgae-based technologies have emerged as sustainable alternatives for municipal wastewater treatment. However, the presence of viruses in the treated wastewater is a major concern for reuse applications. This study assessed the ability of these technologies to reduce viruses during secondary wastewater treatment. The results showed that all technologies were effective in reducing the concentration of viruses, with microalgae-based treatment exhibiting the highest potential for reducing the disinfection requirements of treated wastewater.
Article
Engineering, Environmental
Young Gwang Kim, Sae Yun Kwon, Spencer J. Washburn, Scott C. Brooks, Ji Won Yoon, Lucien Besnard
Summary: The study uses Hg isotope ratios to identify the sources and exposure pathways of mercury in bivalves, finding that dissolved Hg phases in the water column are the primary source and exposure pathway to bivalves. This provides new insights into using bivalves as bioindicators for sediment quality monitoring.
Article
Engineering, Environmental
Hui Geng, Ying Xu, Rui Liu, Dianhai Yang, Xiaohu Dai
Summary: This study investigates the effect of cation exchange resin (CER) on the sequential recovery of hydrogen and methane from anaerobic digestion (AD) and the corresponding mechanisms. The results show that CER can simultaneously enhance the production of hydrogen and methane by promoting the solubilisation, hydrolysis, and acidification of organic matter. Additionally, CER facilitates effective contact between bacteria and organic particulates and reduces the energy barrier for mass transfer during methane production. The study also reveals changes in the microbial community structure and metagenomics during the AD process.
Article
Engineering, Environmental
Xiaojing Lin, Zhan Jin, Shunfeng Jiang, Zhiquan Wang, Suqing Wu, Ke Bei, Min Zhao, Xiangyong Zheng
Summary: Dehumidification combined with addition of absorbent resin supplement (ARS) was used to achieve rapid evaporation of non-pretreated urine, resulting in high water evaporation efficiency and nutrient recovery.
Article
Engineering, Environmental
Yangli Che, Chaoran Lin, Shen Li, Jiao Liu, Longhai Zhu, Shilei Yu, Nan Wang, Haoshuai Li, Mutai Bao, Yang Zhou, Tonghao Si, Rui Bao
Summary: Hydrodynamic processes play a crucial role in the transmission of sediments, microbial assembly, and organic carbon redistribution in the ocean. Through experiments and analysis, we found that hydrodynamics shape the assembly of microbial communities and control the redistribution of different sourced organic carbon, thereby influencing microbial-mediated biogeochemical transformation.
Article
Engineering, Environmental
Chao Chen, Yu Yang, Nigel J. D. Graham, Zhenyu Li, Xingtao Yang, Zhining Wang, Nadia Farhat, Johannes S. Vrouwenvelder, Li -an Hou
Summary: The fouling of seawater reverse osmosis membranes is a persistent challenge in desalination. This study monitored the operational performance of a desalination plant for 7 years and the fouling development in different areas of membrane modules. The findings showed that operational performance declined over time and fouling mainly occurred at the feed side of the modules, with the highest microbial diversity. Keystone species like Chloroflexi and Planctomycetes played an important role in maintaining community structure and biofilm maturation. Polysaccharides, soluble microbial products, marine humic acid-like substances, and inorganic substances contributed to fouling. Overall, biofouling had a significant impact on membrane fouling after 7 years of operation.
Article
Engineering, Environmental
Dan Li, Jieyi Sun, Yibo Fu, Wentao Hong, Heli Wang, Qian Yang, Junhong Wu, Sen Yang, Jianhui Xu, Yunfei Zhang, Yirong Deng, Yin Zhong, Ping'an Peng
Summary: Sulfidation-oxidation treatment of magnetite (Fe3O4) enhances the production of dark center dot OH, which can efficiently degrade dissolved organic matter (DOM) and accelerate carbon cycling.
Article
Engineering, Environmental
Cheng Yu, Kaijun Wang, Kaiyuan Zhang, Ruiyang Liu, Pingping Zheng
Summary: This study implemented a microaerobic-aerobic configuration in a full-scale municipal wastewater treatment facility and investigated the effects on sludge characteristics, pollutant removal, microbial community, and granulation mechanisms. The results showed successful transition from flocculent-activated sludge to well-defined AGS after two months of operation. The primary pathways for pollutant removal were simultaneous nitrification, denitrification, and phosphorus removal. Moreover, the incorporation of internal separators induced shifts in the flow pattern, which promoted granulation.
Article
Engineering, Environmental
Zhe Zhang, Shaoyang Hu, Guangrong Sun, Wei Wang
Summary: Halogenated aromatic disinfection byproducts (DBPs), such as halogenated phenols, have garnered widespread attention due to their high toxicity and prevalence. This study reports on the analysis, occurrence, and cytotoxicity of a group of emerging halogenated aromatic DBPs, known as halogenated polyhydroxyphenols (HPPs), in drinking water.
Article
Engineering, Environmental
Shengyue Chen, Jinliang Huang, Peng Wang, Xi Tang, Zhenyu Zhang
Summary: Accurate prediction of river water quality is crucial for sustainable water management. This study introduces wavelet analysis and transfer learning techniques to assist LSTM modeling, proposing a newly coupled modeling approach that improves short-term prediction of river water quality.
Article
Engineering, Environmental
Bang Du, Xinmin Zhan, Piet N. L. Lens, Yifeng Zhang, Guangxue Wu
Summary: Efficient anaerobic digestion relies on the cooperation of different microorganisms with different metabolic pathways. This study investigated the effects of different operational modes and the addition of powdered activated carbon (PAC) on ethanol metabolic pathways. The results showed that the SBR mode and the presence of CO2 facilitated ethanol metabolism towards propionate production, while the CFR mode with extended solids retention time enriched Geobacter. Adjusting operational modes and PAC addition can modulate anaerobic ethanol metabolism and enrich Geobacter.
Article
Engineering, Environmental
Wanfa Wang, Si-Liang Li, Jun Zhong, Yuanbi Yi, Fujun Yue, Zenglei Han, Qixin Wu, Ding He, Cong-Qiang Liu
Summary: This study compares the carbon biogeochemical processes in karst and non-karst regions within large thermal stratified river-reservoir systems. The results demonstrate that karst reservoirs have a reduced potential for carbon emissions and highlight the importance of considering geologic settings to improve accuracy in regional and global CO2 emission estimates.
Article
Engineering, Environmental
Chunxia Jiang, Zelong Zhao, Dong Zhu, Xiong Pan, Yuyi Yang
Summary: This study analyzed the occurrence and distribution of antibiotic resistance genes (ARGs) in different environmental media of the Yangtze River using metagenomics. Core resistome dominated by multidrug resistance genes was found in all samples, while rare resistome dominated by various resistance genes was more prevalent in plasmids. Specific bacteria were identified as hosts for both core and rare resistomes, with high clinical concern ARGs found in the rare resistome. Particle-associated environment provided the most ideal conditions for resistome hosts. This study provided insights into the genetic locations of ARGs and the community assembly mechanisms of ARG hosts in freshwater environments.
Article
Engineering, Environmental
Yu Zhang, Yongtao He, Linchun Jia, Lei Xu, Zheng Wang, Yueling He, Ling Xiong, Xumeng Lin, Hong Chen, Gang Xue
Summary: By synergizing organic carbon source, thiosulfate, and zero-valent iron, efficient mixotrophic denitrification of oligotrophic secondary effluent can be achieved. Thiosulfate plays a vital role in promoting TN removal efficiency, while corrosion of Fe0 releases OH- to neutralize H+ from thiosulfate-driven denitrification, creating a suitable environment for denitrification. The coordination of thiosulfate and Fe0 maintains the dominance of Thiobacillus for denitrification.
