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Book ; Online: Gas, Water and Solid Waste Treatment Technology

Zhang, Zhien / Núñez-Delgado, Avelino / Zhang, Wenxiang

2021

Keywords	Technology: general issues ; adsorption ; chromium ; competition ; fluoride ; soil and water pollution ; municipal solid waste management ; life cycle assessment ; life cycle impacts ; life cycle stages ; eutrophication ; global warming ; human health ; acidification ; Harare ; Zimbabwe ; iron tailings ; ammonium sulfate roasting process ; reaction mechanism ; kinetics ; carbon footprint ; CiteSpace ; a visual analysis ; metronidazole ; porous carbon ; surface modification ; wastewater treatment ; membrane fouling ; molecular composition of foulant ; transparent exopolymer particles (TEP) ; fouling propensities ; waste incineration ; cyclone flue ; gas-solid separation ; numerical simulation ; polysaccharides ; microfiltration process ; calcium ion ; copper adsorption ; magnetized pine needle biochar ; isotherms ; FTIR and XRD studies ; VLE ; CO2 capture ; amine ; DEA-12-PD ; 12-HEPP ; porosity properties ; adsorption capacity ; carbon dioxide storage ; melamine Schiff bases ; surface area ; energy ; antimony ; mineral processing ; potentially toxic elements ; pollution characteristics ; solid waste ; cleaner production ; electronic waste ; recycling ; waste printed circuit boards ; waste EAF slag ; magnesium silicate hydrate ; radioactive waste ; stabilization/solidification ; strontium ; leaching ; membrane technologies ; biofouling ; composite membranes ; polymer blending ; wastewater treatment plants ; environmental costs ; PID control ; dynamic assessment of performance ; heavy metals ; hybrid materials ; functionalized ; Schiff base ; lead ; Langmuir and Freundlich ; carbon capture and storage (CCS) ; offshore gas field ; techno-economic analysis ; calcium oxide nanoparticles ; calcination ; blended cement paste ; mix design ; compressive strength ; bulk density ; transition metal dichalcogenides ; liquid exfoliation ; quenching ; waste collection route planning ; traveling salesman problem ; genetic algorithms ; steelmaking ; bentonite ; solid waste management ; sustainable materials ; biomass ; characterization ; lignocellulosic ; bioenergy ; water treatment ; nanomaterials ; functionalization ; lime ; mineral nitrogen ; soil pH ; organic carbon ; microbial biomass ; N2O ; batch pyrolysis ; business model ; South Africa ; waste tyres ; circular economy ; environmental sustainability ; mollusk shell ; porous concrete ; construction ; algal biomass ; gasification ; activation energy distribution ; household solid waste ; metal recovery value ; socio-economic benefits ; waste composition of Karachi-Pakistan ; waste management ; waste recycling ; ash-free coal ; CO2 gasification ; coal structure ; tri-high coal ; nanoparticles ; ZnO ; equilibrium ; kinetic ; thermodynamic ; phosphate ; aqueous solution ; sustainable synthetic slag production ; energy recovery ; metal spheres ; fixed bed regenerator ; waste and energy nexus ; antibiotics ; competitive sorption ; retention/release ; sorbents ; surface-flow constructed wetland ; nitrogen load ; nitrate ; ammonium ; organic nitrogen ; hydraulic load ; hydraulic residence time ; temperature ; denitrification ; biological uptake ; n/a
Size	1 electronic resource (596 pages)
Publisher	MDPI - Multidisciplinary Digital Publishing Institute
Publishing place	Basel, Switzerland
Document type	Book ; Online
Note	English ; Open Access
HBZ-ID	HT021289669
ISBN	9783036507637 ; 3036507639
Database	ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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Book ; Online: Emerging Advances in Petrophysics. Porous Media Characterization and Modeling of Multiphase Flow

Cai, Jianchao / Sun, Shuyu / Habibi, Ali / Zhang, Zhien

2019

Abstract: Due to the influence of pore-throat size distribution, pore connectivity, and microscale fractures, the transport, distribution, and residual saturation of fluids in porous media are difficult to characterize. Petrophysical methods in natural porous ... ...

Abstract	Due to the influence of pore-throat size distribution, pore connectivity, and microscale fractures, the transport, distribution, and residual saturation of fluids in porous media are difficult to characterize. Petrophysical methods in natural porous media have attracted great attention in a variety of fields, especially in the oil and gas industry. A wide range of research studies have been conducted on the characterization of porous media covers and multiphase flow therein. Reliable approaches for characterizing microstructure and multiphase flow in porous media are crucial in many fields, including the characterization of residual water or oil in hydrocarbon reservoirs and the long-term storage of supercritical CO2 in geological formations. This book gathers together 15 recent works to emphasize fundamental innovations in the field and novel applications of petrophysics in unconventional reservoirs, including experimental studies, numerical modeling (fractal approach), and multiphase flow modeling/simulations. The relevant stakeholders of this book are authorities and service companies working in the petroleum, subsurface water resources, air and water pollution, environmental, and biomaterial sectors
Keywords	Science (General) ; Physics ; Geophysics. Cosmic physics
Size	1 electronic resource (258 p.)
Publisher	MDPI - Multidisciplinary Digital Publishing Institute
Document type	Book ; Online
Note	eng ; Open Access
HBZ-ID	HT020103092
ISBN	9783038977940 ; 9783038977957 ; 3038977942 ; 3038977950
Database	ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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Book ; Online: Flow and Transport Properties of Unconventional Reservoirs 2018

Cai, Jianchao / Zhang, Zhien / Kang, Qinjun / Singh, Harpreet

2019

Abstract: Unconventional reservoirs are usually complex and highly heterogeneous, such as shale, coal, and tight sandstone reservoirs. The strong physical and chemical interactions between fluids and pore surfaces lead to the inapplicability of conventional ... ...

Abstract	Unconventional reservoirs are usually complex and highly heterogeneous, such as shale, coal, and tight sandstone reservoirs. The strong physical and chemical interactions between fluids and pore surfaces lead to the inapplicability of conventional approaches for characterizing fluid flow in these low-porosity and ultralow-permeability reservoir systems. Therefore, new theories and techniques are urgently needed to characterize petrophysical properties, fluid transport, and their relationships at multiple scales for improving production efficiency from unconventional reservoirs. This book presents fundamental innovations gathered from 21 recent works on novel applications of new techniques and theories in unconventional reservoirs, covering the fields of petrophysical characterization, hydraulic fracturing, fluid transport physics, enhanced oil recovery, and geothermal energy. Clearly, the research covered in this book is helpful to understand and master the latest techniques and theories for unconventional reservoirs, which have important practical significance for the economic and effective development of unconventional oil and gas resources
Keywords	Technology (General) ; Engineering (General). Civil engineering (General)
Size	1 electronic resource (364 pages)
Publisher	MDPI - Multidisciplinary Digital Publishing Institute
Document type	Book ; Online
Note	eng ; Open Access
HBZ-ID	HT020307410
ISBN	9783039211166 ; 9783039211173 ; 3039211161 ; 303921117X
Database	ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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Book ; Online: Gas Capture Processes

Zhang, Zhien / Borhani, Tohid / El-Naas, Muftah / Soltani, Salman / Yan, Yunfei

2020

Keywords	History of engineering & technology ; in situ gasification chemical looping combustion ; high-flux circulating fluidized bed ; counter-flow moving bed ; gas leakage ; coupling mechanism ; carbon capture and utilization ; biogas upgrading ; calcium carbonate precipitation ; chemical absorption ; gas pressure ; gas content ; gas basic parameters ; rapid estimation technology ; supercritical water oxidation ; high-pressure separation ; oxygen recovery ; energy recovery ; economic analysis ; coal-direct chemical looping combustion ; theoretical methodology ; high-flux ; pressure gradient ; gas mole fraction ; activity ; UNIFAC ; phase equilibrium ; threshold value ; CO2 capture ; calcium looping ; chemical sorption ; anti-attrition ; pore-former particle size ; Reaction ; kinetics ; carbon dioxide ; N-methyldiethanolamine ; L-Arginine ; stopped flow technique ; carbon capture ; CO2 sequestration ; steel-making waste ; steel slag ; H2S absorption ; amine solutions ; glycols ; desulfurization ; aqueous and non-aqueous solutions ; gas diffusion ; unipore diffusion model ; bidisperse diffusion model ; dispersive diffusion model ; refinery plants ; industrial gas streams ; petrochemical processes ; waste gases ; activated carbons ; catalytic activation ; physicochemical structure ; SO2 adsorption ; optimal conceptual design ; market prediction ; economic uncertainty ; environmental impact ; carbon dioxide separation ; Aspen Plus ; CCGT ; Taguchi ; Minitab ; optimization ; 2-Amino-2-Methyl-1-Propanol ; modelling and Simulation ; post-combustion capture ; exergy analysis ; flowsheeting configurations ; nanofluids ; absorption intensification ; mass transfer coefficient ; bubble column ; global warming ; membrane contactor ; removal of NO2 and CO2 ; coke oven ; carbonaceous deposits ; spectral analysis ; mechanism ; arsenene ; doping ; first principles study ; gas adsorption ; two-dimensional ; waste polyurethane foam ; physical activation ; high selectivity ; ultra-micropore ; mechanical activation ; iron ore ; carbonation ; calcination ; recyclability ; mechanochemical reactions ; carbonation kinetics ; MXene ; gas separation ; Knudsen diffusion ; molecular sieving ; transport mechanism ; spiral nozzle ; gas absorption ; spray atomization ; droplet size ; droplet velocity ; gas emission ; capture ; CO2
Size	1 electronic resource (440 pages)
Publisher	MDPI - Multidisciplinary Digital Publishing Institute
Publishing place	Basel, Switzerland
Document type	Book ; Online
Note	English ; Open Access
HBZ-ID	HT021044598
ISBN	9783039287819 ; 3039287818
Database	ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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Article ; Online: Corrigendum to "Membrane fouling mechanism of biofilm-membrane bioreactor (BF-MBR): Pore blocking model and membrane cleaning" [Bioresour. Technol. 250 (2018) 398-405].

Zheng, Yi / Zhang, Wenxiang / Tang, Bing / Bin, Liying / Ding, Jie / Zhang, Zhien

Bioresource technology

2024 Volume 399, Page(s) 130564

Language	English
Publishing date	2024-03-14
Publishing country	England
Document type	Published Erratum
ZDB-ID	1065195-0
ISSN	1873-2976 ; 0960-8524
ISSN (online)	1873-2976
ISSN	0960-8524
DOI	10.1016/j.biortech.2024.130564
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Z 3258: Show issues

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Article: Dynamic scouring of multifunctional granular material enhances filtration performance in membrane bioreactor: Mechanism and modeling

Zhang, Wenxiang / Liang, Wenzhong / Zhang, Zhien

Journal of membrane science. 2022 Sept. 03,

2022

Abstract: The granular material (GM) is able to effectively improve the membrane fouling control in membrane bioreactor (MBR) by dynamic scouring, adsorption behavior and enzymatic degradation. However, their roles and effects on the filtration performance of MBR ... ...

Abstract	The granular material (GM) is able to effectively improve the membrane fouling control in membrane bioreactor (MBR) by dynamic scouring, adsorption behavior and enzymatic degradation. However, their roles and effects on the filtration performance of MBR remain unclear. The present work investigated the GM dynamic scouring mechanism, revealed the multifunctional quantitative evaluation, and clarified the filtration performance at various GM operating conditions in MBR. First, the aerobic granular sludge (AGS)-filtration process was still limited by the presence of irreversible membrane fouling, which decreased the filtration performance in MBR (threshold flux [169.5 L m⁻² h⁻¹] and (turning point of membrane fouling resistance [1.1×10¹² m⁻¹]). To solve this problem, the GMs (activated carbon [AC] and laccase immobilized activated carbon [LAC]) was added into the AGS-filtration process to enhance the filtration performance. Above all, based on momentum conservation, the dynamic scouring mathematical model was put forward to elucidate the dynamic scouring mechanism of GM towards the membrane surface. The scouring stress on the membrane surface was proportional to the total mass of GM and offered an additional shear effect for clearly promoting the collision between GM and foulant, and decreasing their deposition on the membrane surface via friction with the membrane. Then, both AC and LAC exhibited a highly desirable adsorption efficiency for foulant removal, whereas the enzymatic degradation of LAC also furtherly straightened this effect. Furthermore, a new contribution quantification model was proposed for evaluating the contribution rates of dynamic scouring (59.1%), adsorption behavior (36.4%) and enzymatic degradation (4.6%) to boost the filtration performance, implying that the dynamic scouring and adsorption behavior brought about the dominated promotion. At the GM of 8 g/L and size of 300–600 μm, AGS-filtration exhibited an optimized performance in term of threshold flux, turning point of membrane fouling resistance and membrane cleaning. The present study offers insights into the mechanism that GM multifunctional scouring enhanced filtration performance in MBR.
Keywords	activated carbon ; adsorption ; filtration ; friction ; laccase ; mathematical models ; membrane bioreactors ; momentum ; quantitative analysis ; sludge
Language	English
Dates of publication	2022-0903
Publishing place	Elsevier B.V.
Document type	Article
Note	Pre-press version
ZDB-ID	194516-6
ISSN	0376-7388
ISSN	0376-7388
DOI	10.1016/j.memsci.2022.120979
Database	NAL-Catalogue (AGRICOLA)

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Article: Segmentation algorithm for overlap recognition of seedling lettuce and weeds based on SVM and image blocking

Zhang, Lei / Zhang, Zhien / Wu, Chuanyu / Sun, Liang

Computers and electronics in agriculture. 2022 Oct., v. 201

2022

Abstract: For the problem of a low recognition rate and shape feature failure caused by overlapping seedlings and weeds during the development of an intelligent lettuce weeding robot, a method to identify seedling lettuce and weeds based on an image block and ... ...

Abstract	For the problem of a low recognition rate and shape feature failure caused by overlapping seedlings and weeds during the development of an intelligent lettuce weeding robot, a method to identify seedling lettuce and weeds based on an image block and support vector machine (SVM) is proposed, which realizes their precise identification and boundary segmentation. The a* channel is used to grayscale the collected image. The Otsu and morphological methods are selected to extract all the green targets in the image. The connected component analysis method is applied to label the green targets with regions of interest (ROIs), and those with pixel areas larger than the area threshold are normalized to 256 × 256 pixels. The image blocking technique is introduced to separately aliquot the normalized ROI, with block sizes of 16 × 16, 32 × 32, and 64 × 64 pixels. On this basis, the image sub-blocks are manually labeled, block by block, to extract three texture features: histogram of oriented gradient (HOG), local binary pattern (LBP), and gray-level co-occurrence matrix (GLCM). With the accuracy of fivefold cross-validation as the optimization objective, a genetic algorithm (GA) is used to optimize the SVM penalty and kernel parameters of 21 groups of research objects (one block size has three texture features, which are arbitrarily combined to form seven research objects, with a total of three block sizes). We compare the recognition performance of the SVM, RF, KNN, and GA-SVM classifiers in a single feature and a combination of fusion strategies through comparative analysis. When the block size is 32 × 32 pixels, the fusion of LBP and GLCM features under the GA-SVM classifier has the highest accuracy, and the optimal SVM model for the identification of lettuce and weeds in the seedling stage is obtained. For the misidentified image sub-blocks in optimization model recognition, an image block reconstruction method based on the comparison of the center point and eight-neighbor label value is proposed, and this is combined with the proportion of image blocks of two labels for comprehensive judgment. The center point label value is reconstructed to the improve recognition accuracy. Experimental results show that the average precision, recall, and F1 score of the proposed method are 0.9473, 0.9529, and 0.9498, respectively, and those of images without overlapping leaves can all reach 1, thus providing a theoretical basis for crop recognition and segmentation.
Keywords	agriculture ; electronics ; lettuce ; models ; seedlings ; support vector machines ; texture
Language	English
Dates of publication	2022-10
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	395514-x
ISSN	0168-1699
ISSN	0168-1699
DOI	10.1016/j.compag.2022.107284
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Modeling the interaction between a new four-bar subsoiling mechanism and red soil using the improved differential evolution algorithm and DEM

Zhang, Lei / Zhai, Yibin / Wu, Chuanyu / Huang, Shouzhi / Zhang, Zhien

Computers and Electronics in Agriculture. 2023 May, v. 208 p.107783-

2023

Abstract: Because of the poor subsoiling effects and high tillage resistances of small subsoiling machines when used on red soil in southern China, a new subsoiling mechanism based on functional bionics and an optimization method that employed an improved ... ...

Abstract	Because of the poor subsoiling effects and high tillage resistances of small subsoiling machines when used on red soil in southern China, a new subsoiling mechanism based on functional bionics and an optimization method that employed an improved differential evolution (IDE) algorithm are proposed in this paper. The tillage performance was improved by causing the subsoiler to mimic the digging motion of a mole forefoot. The path synthesis of the subsoiling mechanism was solved by the IDE, and the tillage performance of the four-bar bionic subsoiling mechanism was evaluated by the discrete element method. First, the digging trajectory of the mole forefoot was mapped as the desired subsoiling trajectory. An optimization model for the path synthesis was established to minimize the position error between the desired subsoiling trajectory and the coupler curve of the mechanism; it was solved by the differential evolution algorithm with improvements in the mutation and crossover operations. It was found that the IDE could more rapidly search for a more accurate solution. The optimization results were used to design a bionic subsoiling mechanism that could mimic the digging trajectory of a mole forefoot. Second, the microscopic contact parameters among the soil particles were calibrated by soil accumulation and direct shear tests. In addition, a discrete element soil model was established that included dual coupling of variable contact models for the tillage layer and the plow pan. The tillage processes of an existing common subsoiling mechanism (CSM), the bionic subsoiling mechanism equipped with a common subsoiler (BSM&CS), and the bionic subsoiling mechanism equipped with a bionic subsoiler (BSM&BS) were analyzed by a joint ADAMS and EDEM simulation. The simulation results were analyzed according to established evaluation indexes for tillage performance. The comprehensive soil disturbance performance of the BSM&CS improved by 257.03% and its drag reduced by 10.87% from the CSM values, while the comprehensive soil disturbance performance of the BSM&BS improved by 312.78% and its drag reduced by 18.40% from the CSM values. Finally, the driving parameter combination for the BSM was optimized using the central composite design method.
Keywords	agriculture ; algorithms ; disturbed soils ; electronics ; models ; moles ; mutation ; plow pans ; subsoilers ; system optimization ; tillage ; China ; Functional bionics ; Improved differential evolution algorithm ; Subsoiling mechanism ; DEM ; Soil model
Language	English
Dates of publication	2023-05
Publishing place	Elsevier B.V.
Document type	Article ; Online
ZDB-ID	395514-x
ISSN	0168-1699
ISSN	0168-1699
DOI	10.1016/j.compag.2023.107783
Database	NAL-Catalogue (AGRICOLA)

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Article: Nanostructured Membrane Materials for CO₂ Capture: A Critical Review.

Han, Yang / Zhang, Zhien

Journal of nanoscience and nanotechnology

2019 Volume 19, Issue 6, Page(s) 3173–3179

Abstract: To mitigate carbon emission from the combustion of fossil fuels, membrane is advantageous due to the fact that membrane is a thin interphase acting as a selective barrier separating two phases. This thinness, typically in the range of 100 nm to a few ... ...

Abstract	To mitigate carbon emission from the combustion of fossil fuels, membrane is advantageous due to the fact that membrane is a thin interphase acting as a selective barrier separating two phases. This thinness, typically in the range of 100 nm to a few micrometers, provides an almost natural platform to implement functional nanostructures. In this review, the recent progress in nanostructured membrane materials for CO₂ capture will be discussed, including applications in flue gas decarbonizing (CO₂/N₂ separation) and syngas purification (CO₂/H₂ separation). In addition, the fundamentals of membrane technologies are also introduced. The reviewed nanostructure formation is confined to solid state materials, including polymer with intrinsic microporosity, carbon-based membranes, zeolite, and metal organic framework.
Language	English
Publishing date	2019-02-12
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ISSN	1533-4880
ISSN	1533-4880
DOI	10.1166/jnn.2019.16584
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Editorial on the Topic "New Research on Detection and Removal of Emerging Pollutants".

Núñez-Delgado, Avelino / Zhang, Zhien / Bontempi, Elza / Coccia, Mario / Race, Marco / Zhou, Yaoyu

Materials (Basel, Switzerland)

2023 Volume 16, Issue 2

Abstract: With the Topic "New Research on Detection and Removal of Emerging Pollutants" (https://www [ ... ]. ...

Abstract	With the Topic "New Research on Detection and Removal of Emerging Pollutants" (https://www [...].
Language	English
Publishing date	2023-01-11
Publishing country	Switzerland
Document type	Editorial
ZDB-ID	2487261-1
ISSN	1996-1944
ISSN	1996-1944
DOI	10.3390/ma16020725
Database	MEDical Literature Analysis and Retrieval System OnLINE

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