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1. Developing a new approach for design support of subsurface constructed wetland using machine learning algorithms

Author:
Xuan Cuong Nguyen; Thi Thanh Huyen Nguyen; Quyet V. Le; Phuoc Cuong Le; Arun Lal Srivastav; Quoc Bao Pham; Phuong Minh Nguyen; D. Duong La; Eldon R. Rene; H. Hao Ngo; S. Woong Chang; D. Duc Nguyen
Source:
Journal of environmental management 2022 v.301 pp. 113868
ISSN:
0301-4797
Subject:
carbon nitrogen ratio,   etc   ; aeration; environmental management; models; prediction; variance;     Show all 6 Subjects
Abstract:
... Knowing the effluent quality of treatment systems in advance to enable the design of treatment systems that comply with environmental standards is a realistic strategy. This study aims to develop machine learning - based predictive models for designing the subsurface constructed wetlands (SCW). Data from the SCW literature during the period of 2009–2020 included 618 sets and 10 features. Five algo ...
DOI:
10.1016/j.jenvman.2021.113868

2. Start-up strategies to develop aerobic granular sludge and photogranules in sequential batch reactors

Author:
Marcos Sales; Talita Marinho; Idayana C. Marinho; Savia Gavazza; Mario T. Kato; Bruna S. Magnus; Lourdinha Florencio
Source:
Science of the total environment 2022 v.828 pp. 154402
ISSN:
0048-9697
Subject:
carbon nitrogen ratio,   etc   ; Rhodocyclaceae; algae; biomass; chemical oxygen demand; environment; nitrogen; polymers; sludge;     Show all 9 Subjects
Abstract:
... In this study, start-up strategies to develop conventional aerobic granular sludge (AGS) and algal aerobic granular sludge (AAGS) (photogranules), were investigated. The granulation experiment was conducted in four sequencing batch reactors (SBR), of which two were conventional SBRs (RC1, RC2) used as control, and two were photo-SBRs (R1, R2). R1 and RC1 were operated with a 40-min feeding during ...
DOI:
10.1016/j.scitotenv.2022.154402

3. A review on anaerobic digestion with focus on the role of biomass co-digestion, modelling and optimisation on biogas production and enhancement

Author:
Tawanda Kunatsa; Xiaohua Xia
Source:
Bioresource technology 2022 v.344 pp. 126311
ISSN:
0960-8524
Subject:
carbon nitrogen ratio,   etc   ; anaerobic digestion; biogas; biomass; feedstocks; gas production (biological); hybridization; pH; temperature;     Show all 9 Subjects
Abstract:
... The status, recent trends and future perspectives in modelling and optimisation of anaerobic co-digestion is investigated. Areas that can be focused on and those which need further research towards enhancing biogas production are pointed out. Co-digestion, modelling and optimisation of anaerobic digestion as well as techno-economic aspects are reviewed in this paper. It was noted that co-digestion ...
DOI:
10.1016/j.biortech.2021.126311

4. Will Climate Change Enhance Algal Blooms? The Individual and Interactive Effects of Temperature and Rain on the Macroalgae Ulva

Author:
Lindsay A. Green-Gavrielidis; Carol S. Thornber
Source:
Estuaries and coasts 2022 v.45 no.6 pp. 1688-1700
ISSN:
1559-2723
Subject:
carbon nitrogen ratio,   etc   ; Ulva; carbon; climate change; macroalgae; nitrogen; nitrogen content; photosynthesis; rain; salinity;     Show all 10 Subjects
Abstract:
... Global climate change has led to increased sea surface temperatures and altered precipitation patterns worldwide. Concurrently, macroalgal blooms in coastal systems have been increasing in frequency and severity globally and are successful due to their fast growth rates and broad environmental tolerances. Here, we examine the responses of the bloom-forming green algae Ulva compressa and U. lacinul ...
DOI:
10.1007/s12237-022-01048-y

5. Potentiality of recovering bioresource from food waste through multi-stage Co-digestion with enzymatic pretreatment

Author:
Lan Wu; Wei Wei; Xuran Liu; Dongbo Wang; Bing-Jie Ni
Source:
Journal of environmental management 2022 v.319 pp. 115777
ISSN:
0301-4797
Subject:
carbon nitrogen ratio,   etc   ; anaerobic digestion; biodegradability; energy; energy recovery; enzymatic hydrolysis; feedstocks; food waste; income;     Show all 9 Subjects
Abstract:
... Food waste (FW) is not only a major social, nutritional and environmental issue, but also an underutilized resource with significant energy, which has not been fully explored currently. Considering co-digestion can adjust carbon to nitrogen ratio (C/N) of the feedstock and improve the synergetic interactions among microorganisms, anaerobic co-digestion (AnCoD) is then becoming an emerging approach ...
DOI:
10.1016/j.jenvman.2022.115777

6. Increasing nitrogen availability does not decrease the priming effect on soil organic matter under pulse glucose and single nitrogen addition in woodland topsoil

Author:
Yunyun Zheng; Jian Jin; Xiaojuan Wang; Gary J. Clark; Caixian Tang
Source:
Soil biology & biochemistry 2022 v.172 pp. 108767
ISSN:
0038-0717
Subject:
carbon nitrogen ratio,   etc   ; glucose; microbial biomass; mineralization; nitrogen; soil minerals; soil organic carbon; topsoil; woodlands;     Show all 9 Subjects
Abstract:
... Nitrogen (N) availability has been suggested to affect the mineralization of soil organic carbon (C). However, it remains unclear how N supply affects the decomposition of native soil organic C induced by labile C input (i.e., priming effect). This study aimed at examining whether the magnitude and direction of the priming effect depended on the N supply rates and how this interacted with soil lay ...
DOI:
10.1016/j.soilbio.2022.108767

7. Combined effects of biochar and fertilizer applications on yield: A review and meta-analysis

Author:
Shahla Hosseini Bai; Negar Omidvar; Marta Gallart; Wiebke Kämper; Iman Tahmasbian; Michael B. Farrar; Kanika Singh; Guiyao Zhou; Bushra Muqadass; Cheng-Yuan Xu; Richard Koech; Yujuan Li; Thi Thu Nhan Nguyen; Lukas van Zwieten
Source:
Science of the total environment 2022 v.808 pp. 152073
ISSN:
0048-9697
Subject:
carbon nitrogen ratio,   etc   ; biochar; crop yield; data collection; environment; meta-analysis; mineral fertilizers; pH; profitability;     Show all 9 Subjects
Abstract:
... The use of biochar is changing, and the combined application of biochar with fertilizer is increasingly gaining acceptance. However, the yield gains results reported in the existing literature through the co-application of fertilizer with biochar are conflicting. To resolve this, we utilized a meta-analysis of 627 paired data points extracted from 57 published articles to assess the performance of ...
DOI:
10.1016/j.scitotenv.2021.152073

8. Heterotrophic aerobic denitrification by novel bacterium Georgenia daeguensis ARB2 for treatment of nitrate contaminated waters

Author:
A. Rajta; H. Setia; S. Shukla; R. Bhatia
Source:
International journal of environmental science and technology 2022 v.19 no.4 pp. 3133-3144
ISSN:
1735-1472
Subject:
carbon nitrogen ratio,   etc   ; Georgenia; bacteria; carbon; denitrification; glycogen; maltose; nitrates; nitrogen; pH; temperature; wastewater; wastewater treatment;     Show all 13 Subjects
Abstract:
... Denitrification is a potential strategy for nitrate removal from wastewater. This study reports the isolation of a novel bacterium Georgenia daeguensis ARB2 which has not been earlier reported for treatment of wastewater. ARB2 was isolated from pharmaceutical wastewater and optimized for growth and nitrate removal under conditions of 10 mM nitrate stress (140 mgL⁻¹ [Formula: see text]). It can uti ...
DOI:
10.1007/s13762-021-03253-x

9. Termite graveyards. Hidden geochemical patches?

Author:
Pascal Jouquet; Angélique Bultelle; Irina Djouraev; Sandrine Caquineau; Vincent Hervé; Mireille Vasseur-Cognet
Source:
Soil biology & biochemistry 2022 v.170 pp. 108678
ISSN:
0038-0717
Subject:
carbon nitrogen ratio,   etc   ; Macrotermes natalensis; calcium; calcium carbonate; calcium oxalate; humans; particle size; soil; soil biology;     Show all 9 Subjects
Abstract:
... Entombment, or the production of graveyards for the disposal of dead bodies, is not only a practice of human societies but is also observed in nature, including among small invertebrates such as termites. While the influence of termites on soil dynamics has largely been studied in comparing the specific properties of their mounds and protective sheeting with those of the surrounding soil, the prop ...
DOI:
10.1016/j.soilbio.2022.108678

10. Impact of nitrogen addition on plant-soil-enzyme C–N–P stoichiometry and microbial nutrient limitation

Author:
Hongwei Xu; Qing Qu; Guanwen Li; Guobin Liu; Violette Geissen; Coen J. Ritsema; Sha Xue
Source:
Soil biology & biochemistry 2022 v.170 pp. 108714
ISSN:
0038-0717
Subject:
carbon nitrogen ratio,   etc   ; atmospheric precipitation; cropland; enzymes; forests; grasslands; meta-analysis; nitrogen; soil; soil biology; stoichiometry;     Show all 11 Subjects
Abstract:
... Global atmospheric nitrogen deposition significantly affects the nutrient cycling and C–N–P stoichiometry in ecosystems. Herein, a global meta-analysis was conducted based on 898 pairwise observations to analyze the impact of nitrogen addition on plant-soil-enzyme C–N–P stoichiometry and microbial nutrient limitation in different ecosystem types (cropland, grassland, and forest), nitrogen addition ...
DOI:
10.1016/j.soilbio.2022.108714

11. Flow Intermittency Affects Leaf Decomposition and Benthic Consumer Communities of Alpine Streams: A Case Study along the Po River

Author:
Laura Gruppuso; Alberto Doretto; Elisa Falasco; Stefano Fenoglio; Michele Freppaz; Mark Eric Benbow; Francesca Bona
Source:
Water 2022 v.14 no.2 pp. -
ISSN:
2073-4441
Subject:
carbon nitrogen ratio,   etc   ; biodiversity; case studies; climate change; leaves; macroinvertebrates; nitrogen; palatability; plant litter; rivers; water;     Show all 11 Subjects
Abstract:
... Streams and rivers are becoming increasingly intermittent in Alpine regions due to the global climate change and related increases of local water abstractions, making it fundamental to investigate the occurrence of supraseasonal drying events and their correlated effects. We aimed to investigate leaf litter decomposition, the C:N ratio of the litter, and changes in associated macroinvertebrate com ...
DOI:
10.3390/w14020258

12. Cellulolytic bacteria joined with deproteinized whey decrease carbon to nitrogen ratio and improve stability of compost from wine production chain by-products

Author:
Antonio Alfonzo; Vito Armando Laudicina; Sofia Maria Muscarella; Luigi Badalucco; Giancarlo Moschetti; Giacomo Massimo Spanò; Nicola Francesca
Source:
Journal of environmental management 2022 v.304 pp. 114194
ISSN:
0301-4797
Subject:
carbon nitrogen ratio,   etc   ; Bacillus velezensis; Kocuria rhizophila; composts; microbial activity; microbial carbon; mineralization; nitrogen; whey; winemaking; wines;     Show all 11 Subjects
Abstract:
... Composting residues from wine and dairy chains would contribute to increase the environmental sustainability of the production. The aim of this study was to evaluate the effects of deproteinized whey combined with bioactivators on the composting process. Bacillus velezensis and Kocuria rhizophila, bacteria with cellulolytic activity, were isolated from raw materials and inoculated in the organic m ...
DOI:
10.1016/j.jenvman.2021.114194

13. Cooperative denitrification in biocathodes under low carbon to nitrogen ratio conditions coupled with simultaneous degradation of ibuprofen in photoanodes

Author:
Fan Cheng; Hui Zhang; Siyu Sun; Zhengkui Li
Source:
Bioresource technology 2022 v.351 pp. 126988
ISSN:
0960-8524
Subject:
carbon nitrogen ratio,   etc   ; Hydrogenophaga; Thermomonas; anodes; biocathodes; carbon; denitrification; genes; ibuprofen; nitrates; photocatalysis; photovoltaic cells; technology; wastewater;     Show all 14 Subjects
Abstract:
... A two-chamber microbial photoelectrochemical cell (MPEC) with a denitrification biocathode and an α-Fe₂O₃/P3HT photoanode was established aimed to enhance nitrate removal from wastewater of low carbon sources and achieve simultaneous ibuprofen degradation. The results demonstrated that the average removal of NO₃–-N in the biocathode reached 96.56 ± 0.72% when the COD/NO₃–-N was 0.75, and the relat ...
DOI:
10.1016/j.biortech.2022.126988

14. Low carbon-to-nitrogen ratio digestate from high-rate anaerobic baffled reactor facilitates heterotrophic/autotrophic nitrifiers involved in nitrogen removal

Author:
Xiangtong Zhou; Muhammad Arslan; Zhigang Liu; Da Li; Haipeng Xi; Yujie Feng; Shanwei Li; Jing Wei; Xinshan Rong; Zhishui Liang; Xiaochun Wang; Zhiren Wu; Mohamed Gamal El-Din
Source:
Bioresource technology 2022 v.359 pp. 127346
ISSN:
0960-8524
Subject:
carbon nitrogen ratio,   etc   ; basalt; biomass production; denitrification; liquids; metagenomics; municipal wastewater; nitrification; nitrogen; technology; total nitrogen; viability;     Show all 12 Subjects
Abstract:
... In this study, baffled anaerobic–aerobic reactors (AOBRs) with modified basalt fiber (MBF) carriers and felt were used to treat domestic wastewater (DWW). The influent was first treated in anaerobic compartments, with the NH₄⁺-N containing digestate refluxed into aerobic compartment for nitrification. The nitrified liquid was channeled to the anaerobic compartments for further denitrification. Und ...
DOI:
10.1016/j.biortech.2022.127346

15. Phloem: At the center of action in plant defense against aphids

Author:
Moon Twayana; Anil M. Girija; Vijee Mohan; Jyoti Shah
Source:
Journal of plant physiology 2022 v.273 pp. 153695
ISSN:
0176-1617
Subject:
carbon nitrogen ratio,   etc   ; Aphidoidea; antibiotics; asexual reproduction; high pressure treatment; horticulture; niches; plant physiology; sap; stylets; sugars;     Show all 11 Subjects
Abstract:
... The location of the phloem deep inside the plant, the high hydrostatic pressure in the phloem, and the composition of phloem sap, which is rich in sugar with a high C:N ratio, allows phloem sap feeding insects to occupy a unique ecological niche. The anatomy and physiology of aphids, a large group of phytophagous insects that use their mouthparts, which are modified into stylets, to consume large ...
DOI:
10.1016/j.jplph.2022.153695

16. Short-term changes in the anaerobic digestion microbiome and biochemical pathways with changes in organic load

Author:
Jericho Victor Mercado; Mitsuhiko Koyama; Kiyohiko Nakasaki
Source:
Science of the total environment 2022 v.813 pp. 152585
ISSN:
0048-9697
Subject:
carbon nitrogen ratio,   etc   ; Bacteroidales; Methanosaeta; Trichococcus; acclimation; anaerobic digestion; environment; methane production; microbiome; sludge; species diversity; starch;     Show all 12 Subjects
Abstract:
... Fluctuations in organic loading rate are frequently experienced in practical-scale anaerobic digestion systems. These impose shocks to the microbiome leading to process instability and failure. This study elucidated the short-term changes in biochemical pathways and the contributions of microbial groups involved in anaerobic digestion with varying organic load shocks. A mixture of starch and hipol ...
DOI:
10.1016/j.scitotenv.2021.152585

17. Effect of carbon to nitrogen ratio of food waste and short resting period on microbial accumulation during anaerobic digestion

Author:
Maria Cecilia D. Salangsang; Mutsumi Sekine; Shinichi Akizuki; Hiroyuki D. Sakai; Norio Kurosawa; Tatsuki Toda
Source:
Biomass and bioenergy 2022 v.162 pp. 106481
ISSN:
0961-9534
Subject:
carbon nitrogen ratio,   etc   ; anaerobic digestion; bioenergy; biomass; carbon; community structure; fermentation; food waste; methane; microbial communities; nitrogen;     Show all 11 Subjects
Abstract:
... The short resting period technique (i.e., deliberate stoppage of the substrate supply) for anaerobic digestion (AD) leads to accumulation of microbes using residual substrate, which could be an effective method to achieve microbial proliferation without additional investment/operating costs. The composition of substrate must influence the increase of microbes. However, even the effect of the carbo ...
DOI:
10.1016/j.biombioe.2022.106481

18. Humans rather than Eurasian lynx (Lynx lynx) shape ungulate browsing patterns in a temperate forest

Author:
Suzanne T. S. van Beeck Calkoen; Michele H. Deis; Julian Oeser; Dries P. J. Kuijper; Marco Heurich
Source:
Ecosphere 2022 v.13 no.2 pp. e3931
ISSN:
2150-8925
Subject:
carbon nitrogen ratio,   etc   ; Lynx lynx; carnivores; feces; food quality; habitats; humans; recreation; risk; temperate forests; trees; ungulates;     Show all 12 Subjects
Abstract:
... The recolonization of human‐dominated landscapes by large carnivores has been followed with considerable scientific interest; however, little is known about their interactive effect on ungulate foraging behavior. This study compared the risks imposed by humans and lynx on ungulate foraging behavior by examining the effects of browsing intensity (at two spatial scales), diet quality, and tree speci ...
DOI:
10.1002/ecs2.3931

19. Diversity of archaea and niche preferences among putative ammonia‐oxidizing Nitrososphaeria dominating across European arable soils

Author:
Aurélien Saghaï; Samiran Banjeree; Florine Degrune; Anna Edlinger; Pablo García‐Palacios; Gina Garland; Marcel G. A. van der Heijden; Chantal Herzog; Fernando T. Maestre; David S. Pescador; Laurent Philippot; Matthias C. Rillig; Sana Romdhane; Sara Hallin
Source:
Environmental microbiology 2022 v.24 no.1 pp. 341-356
ISSN:
1462-2912
Subject:
carbon nitrogen ratio,   etc   ; Thaumarchaeota; cation exchange capacity; ecological differentiation; ecophysiology; geomorphology; microbiology; nitrogen cycle; phylogeny; soil pH; temperature;     Show all 11 Subjects
Abstract:
... Archaeal communities in arable soils are dominated by Nitrososphaeria, a class within Thaumarchaeota comprising all known ammonia‐oxidizing archaea (AOA). AOA are key players in the nitrogen cycle and defining their niche specialization can help predicting effects of environmental change on these communities. However, hierarchical effects of environmental filters on AOA and the delineation of nich ...
DOI:
10.1111/1462-2920.15830

20. Soil chemical variables improve models of understorey plant species distributions

Author:
Nathan A. Roe; Mark J. Ducey; Thomas D. Lee; Olivia L. Fraser; Robert A. Colter; Richard A. Hallett
Source:
Journal of biogeography 2022 v.49 no.4 pp. 753-766
ISSN:
0305-0270
Subject:
carbon nitrogen ratio,   etc   ; B horizons; biogeography; exchangeable calcium; forests; geographical distribution; pH; remote sensing; soil fertility; topography; understory;     Show all 11 Subjects
Abstract:
... AIM: Species distribution models (SDMs) assume that all ecologically relevant predictor variables are included. This assumption is frequently violated in SDMs of plant species, as soil variables are rarely included. Here, we used in‐situ, soil geochemical variables along with more commonly used topo‐climatic and remotely sensed variables to create SDMs of understorey plant species. We evaluated wh ...
DOI:
10.1111/jbi.14344