Article
Environmental Sciences
Sahar S. Dalahmeh, Gunnar Thorsen, Hakan Jonsson
Summary: During a 12-month study in Sweden, it was found that open-air storage without composting showed effective removal of hormones and antibiotics, but lower removal of pharmaceutically active substances. Composting resulted in degradation of hormones and a noticeable difference in concentrations of pharmaceuticals between the top and deeper layers of sludge piles.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Long Su, Lingyu Hu, Qinghong Sui, Chengcheng Ding, Di Fang, Lixiang Zhou
Summary: Fungal extraction with Aspergillus niger was used to reclaim phosphorus from sewage sludge ash (SSA), using an organic-rich effluent produced in sludge dewatering as a nutrient source. After 5 days of fungal treatment, 85% of the phosphorus was leached from the ash, mainly due to the dissolution of Ca3(PO4)2, AlPO4, FePO4, and Mg3(PO4)2. A hydroxyapatite (HAP) product with a purity of > 85% was obtained from the extract after removal of metal cations by cation exchange resin (CER) and precipitation with CaCl2. Ultimately, 73.2 wt% of phosphorus was recovered from SSA through integrated fungal extraction, CER purification, and HAP crystallization.
Article
Environmental Sciences
Jeanne Dollinger, Marjolaine Bourdat-Deschamps, Valerie Pot, Valentin Serre, Nathalie Bernet, Ghislaine Deslarue, Melanie Montes, Line Capowiez, Eric Michel
Summary: This study evaluated the influence of three common organic waste amendments on the fate of the herbicide S-Metolachlor in soil. Despite an increase in soil organic carbon, organic waste amendments did not significantly impact the leaching and transformation rate of S-Metolachlor. However, they did affect the degradation pathways of the herbicide.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Yunbei Li, Junli Song, Tingting Liu, Jinghua Lv, Jishao Jiang
Summary: The study found that using RPP as a bulking agent can increase moisture content over 70%, leading to poorer porosity and less efficient O(2) utilization, which suppresses organic matter degradation. When the mixing ratio of sawdust and RPP was 1:1, improvements were seen in temperature, oxygen supply, and dissolved organic carbon degradation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Horticulture
Cemile Dede, Hasan Ozer, Omer Hulusi Dede, Ahmet Celebi, Saim Ozdemir
Summary: Using waste products as alternatives to peat and nutrient-rich materials is important for the ornamental plant industry. Porous inorganic materials, such as pumice and expanded perlite, can be used as bulking agents for sewage sludge, resulting in higher porosity and nutrient availability. Composting with pumice and expanded perlite improves nutrient release and provides a good profile for potting soil or garden soil amendments.
Article
Agricultural Engineering
Wiktor Bojarski, Wojciech Czekala, Mateusz Nowak, Jacek Dach
Summary: The study explored the potential of using logging residue for compost production and the resulting fertilizer for forest nurseries. Pine chips and sewage sludge were used in the study. The compost and leachate obtained during composting had high NPK content, but the high pH of the resulting fertilizer limited its usefulness in forest nurseries.
BIORESOURCE TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Liqiang Meng, Weiguang Li, Shumei Zhang, Xiancheng Zhang, Yi Zhao, Li Chen
Summary: The study evaluated the effects of carbon sources on compost process and quality in lab-scale sewage sludge composting. Results showed that adding readily degradable carbon sources could promote organic matter degradation, improve nitrogen conversion, and accelerate compost maturation. Glucose and sucrose addition resulted in increased dissolved organic carbon, CO2 emission, dehydrogenase activity, nitrification, and germination index during composting.
SCIENTIFIC REPORTS
(2021)
Review
Environmental Sciences
Xinwei Sun, A. N. Anoopkumar, Aravind Madhavan, Parameswaran Binod, Ashok Pandey, Raveendran Sindhu, Mukesh Kumar Awasthi
Summary: Microplastics, as emerging contaminants, are widely present in various mediums, including sewage sludge. During the sewage treatment process, a large number of microplastics are deposited in the sludge and can migrate to other environmental media, posing a threat to human health. Therefore, the removal of microplastics from sewage sludge is necessary. Among various restoration methods, aerobic composting is emerging as a green method for microplastic removal. However, there are few studies on the degradation mechanism of microplastics in aerobic composting, hindering the innovation of composting methods. This paper discusses the degradation mechanism of microplastics in sewage sludge based on environmental factors and explores their potential hazards and future studies.
ENVIRONMENTAL POLLUTION
(2023)
Article
Green & Sustainable Science & Technology
Phoebe-Zoe Morsink-Georgali, Angeliki Kylili, Paris A. Fokaides, Agis M. Papadopoulos
Summary: This paper assesses and compares the environmental impact of using sewage sludge for compost production versus biogas production. The study finds that utilizing sludge for biogas production can save energy and reduce carbon dioxide emissions compared to compost production. Life Cycle Assessment shows that the anaerobic digestion process has a lower environmental impact than the composting process. Therefore, exploiting waste materials to produce useful products adds environmental value to the final product.
JOURNAL OF CLEANER PRODUCTION
(2022)
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
Environmental Sciences
Dennis S. Hansen, Ariel E. Turcios, Anna-Marie Klamt, Christian Wieth, Kasper Reitzel, Mette H. Thomsen, Jutta Papenbrock
Summary: This study investigated the physico-chemical properties of biochar produced at different pyrolysis temperatures and its effects on plant growth and biochemical composition. Biochar application increased water content in the substrate and acted as a nutrient source, potentially reducing the need for mineral fertilizer.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Paraskevi Velli, Ioanna Manolikaki, Evan Diamadopoulos
Summary: The addition of sewage sludge biochar significantly improved soil characteristics, plant growth and nutrient content. The concentration of heavy metals in tomato tissues was low, with traces of some metals found in roots only. The addition of biochar also led to a decrease in the concentration of arsenic and lead in tomato fruits.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Biochemical Research Methods
Carmen Mejias, Juan Luis Santos, Julia Martin, Irene Aparicio, Esteban Alonso
Summary: In this paper, a method for the determination of antibiotics and their metabolites in sewage sludge and agricultural soil was proposed. The method utilizes ultrasound-assisted extraction, dispersive solid-phase extraction clean-up, and liquid chromatography-tandem mass spectrometry. The method was validated and showed good accuracy and precision. The results revealed that macrolides and fluoroquinolones were the antibiotic classes found at the highest concentrations in all types of samples.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Plant Sciences
Jelena Ankuda, Eugenija Baksiene, Almantas Razukas, Othmane Merah
Summary: The aim of this study was to investigate the effects of fertilizing Bromopsis inermis and Phalaroides arundinacea plants with sewage sludge compost (SSC) on biomass yield and quality. The results showed that using SSC as a fertilizer had poor performance. Although fertilizing with SSC significantly increased the biomass yield of Ph. arundinacea, it also increased the concentration of heavy metals in the soil.
Article
Chemistry, Physical
Jacek Piekarski, Katarzyna Ignatowicz, Tomasz Dabrowski
Summary: The article presents research on using the adsorption process to treat aldrin and finds that compost can be a cost-effective alternative for building barriers to protect the environment.
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)