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Shi H, Li X, Yang S, Zhao R, Yuan X. Analysis of Chemical Oxygen Demand in Barrel Finishing Based on Reusing Water Resource of Grinding Fluid. MATERIALS (BASEL, SWITZERLAND) 2024; 17:4051. [PMID: 39203229 PMCID: PMC11356664 DOI: 10.3390/ma17164051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2024] [Revised: 08/04/2024] [Accepted: 08/13/2024] [Indexed: 09/03/2024]
Abstract
To explore the sustainable development of grinding fluid in barrel finishing, the idea of water resource reuse in grinding fluid has been proposed. The influence of the graphene oxide (GO) and the sodium dodecyl benzene sulfonate (SDBS) as main components in the grinding fluid on the chemical oxygen demand (COD) was analyzed. Repreparing new grinding fluids by utilizing the water resources in grinding fluid after finishing will not cause a sharp increase in COD value. GO which absorbs SDBS can be taken away from grinding fluid by physical separation. It will decrease the COD value of grinding fluid. However, SDBS exists in the form of colloids in the grinding fluid and cannot be removed through physical separation, which also affects the COD value. Based on water quality indicators (the COD, pH, total hardness, metal aluminum, anionic surfactants, and total dissolved solids), the water quality index (WQI) of the reusing grinding fluid after finishing by the physical separation is significantly reduced. It indicates that reusing water resources in grinding fluid is a feasible way to reuse grinding fluid.
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Affiliation(s)
- Huiting Shi
- School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China; (R.Z.); (X.Y.)
| | - Xuenan Li
- College of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan 030024, China; (X.L.); (S.Y.)
- Shanxi Province Key Laboratory of Precise Machining, Taiyuan 030024, China
| | - Shengqiang Yang
- College of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan 030024, China; (X.L.); (S.Y.)
- Shanxi Province Key Laboratory of Precise Machining, Taiyuan 030024, China
| | - Ruihao Zhao
- School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China; (R.Z.); (X.Y.)
| | - Xiang Yuan
- School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China; (R.Z.); (X.Y.)
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Raj Deena S, Kumar G, Vickram AS, Rani Singhania R, Dong CD, Rohini K, Anbarasu K, Thanigaivel S, Ponnusamy VK. Efficiency of various biofilm carriers and microbial interactions with substrate in moving bed-biofilm reactor for environmental wastewater treatment. BIORESOURCE TECHNOLOGY 2022; 359:127421. [PMID: 35690237 DOI: 10.1016/j.biortech.2022.127421] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/30/2022] [Accepted: 06/01/2022] [Indexed: 06/15/2023]
Abstract
In a moving bed-biofilm reactor (MBBR), the fluidization efficiency, immobilization of microbial cells, and treatment efficiency are directly influenced by the shape and pores of biofilm carriers. Moreover, the efficacy of bioremediation mainly depends on their interaction interface with microbes and substrate. This review aims to comprehend the role of different carrier properties such as material shapes, pores, and surface area on bioremediation productivity. A porous biofilm carrier with surface ridges containing spherical pores sizes > 1 mm can be ideal for maximum efficacy. It provides diverse environments for cell cultures, develops uneven biofilms, and retains various cell sizes and biomass. Moreover, the thickness of biofilm and controlled scaling shows a significant impact on MBBR performance. Therefore, the effect of these parameters in MBBR is discussed detailed in this review, through which existing literature and technical strategies that focus on the surface area as the primary factor can be critically assessed.
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Affiliation(s)
- Santhana Raj Deena
- Departemnt of Biotechnology, Saveetha School of Engineering, Saveetha University, India
| | - Gopalakrishnan Kumar
- School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - A S Vickram
- Departemnt of Biotechnology, Saveetha School of Engineering, Saveetha University, India
| | - Reeta Rani Singhania
- PhD Program of Aquatic Science and Technology & Department of Marine Environmental Engineering, College of Hydrosphere Science, National Kaohsiung University of Science and Technology (NKUST), Kaohsiung City 81157, Taiwan
| | - Cheng-Di Dong
- PhD Program of Aquatic Science and Technology & Department of Marine Environmental Engineering, College of Hydrosphere Science, National Kaohsiung University of Science and Technology (NKUST), Kaohsiung City 81157, Taiwan
| | - Karunakaran Rohini
- Unit of Biochemistry, Faculty of Medicine, Centre for Excellence in Biomaterials Engineering (CoEBE), AIMST University, 08100, Bedong, Kedah, Malaysia
| | - K Anbarasu
- Departemnt of Bioinformatics, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai, India
| | - S Thanigaivel
- Department of Biotechnology, Faculty of Science & Humanities, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu 603203, India
| | - Vinoth Kumar Ponnusamy
- PhD Program of Aquatic Science and Technology & Department of Marine Environmental Engineering, College of Hydrosphere Science, National Kaohsiung University of Science and Technology (NKUST), Kaohsiung City 81157, Taiwan; Department of Medicinal and Applied Chemistry, Kaohsiung Medical University (KMU), Kaohsiung City, Taiwan; Research Center for Environmental Medicine, Kaohsiung Medical University (KMU), Kaohsiung City, Taiwan; Deparment of Medical Research, Kaohsiung Medical University Hospital (KMUH), Kaohsiung City, Taiwan; Department of Chemistry, National Sun Yat-sen University, Kaohsiung City, Taiwan.
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He W, Zhang L, Liu H, Zhang Y, Fu B, Zhang X, Jiang Q. CO 2 sequestration mediated by wollastonite in anaerobic digestion of sewage sludge: From sequence batch to semi-continuous operation. CHEMOSPHERE 2022; 287:132095. [PMID: 34537456 DOI: 10.1016/j.chemosphere.2021.132095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 08/21/2021] [Accepted: 08/28/2021] [Indexed: 06/13/2023]
Abstract
This study investigated the mechanisms involved in CO2 sequestration under the sequence batch and semi-continuous operation using wollastonite in sludge anaerobic digestion. Wollastonite substantially elevated CH4 content in biogas and played a role in CO2 capture. It increased biogas yield of the glucose due to pH buffering effect but did not increase that of the hydrolysate from thermal alkali pretreated sludge. Under the semi-continuous operation, wollastonite improved the CO2 sequestration, but decreased the biogas yield from 166 to 24 mL/g soluble chemical oxygen demand, since seemingly wollastonite residues inhibited microbes in the sludge. However, the use of dialysis bags to wrap wollastonite offset the negative impact of the wollastonite residues in the sludge, thereby increased biogas yield. The present study is conducive to understanding the mechanisms involved in and proving the feasibility of the CO2 sequestration using wollastonite in sludge anaerobic digestion and its impacts on long-term operation. Consequently, the findings of the study provide key parameters and useful guidelines for scaling up and wollastonite application in anaerobic digestion of sewage sludge.
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Affiliation(s)
- Wanying He
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China
| | - Lihui Zhang
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China
| | - He Liu
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Wuxi, 214122, China; Jiangsu Collaborative Innovation Center of Water Treatment Technology and Material, Suzhou, 215011, China.
| | - Yan Zhang
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Wuxi, 214122, China; Jiangsu Collaborative Innovation Center of Water Treatment Technology and Material, Suzhou, 215011, China
| | - Bo Fu
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Wuxi, 214122, China; Jiangsu Collaborative Innovation Center of Water Treatment Technology and Material, Suzhou, 215011, China
| | - Xuedong Zhang
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Wuxi, 214122, China
| | - Qian Jiang
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China
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Biochar for Wastewater Treatment—Conversion Technologies and Applications. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10103492] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Biochar as a stable carbon-rich material shows incredible potential to handle water/wastewater contaminants. Its application is gaining increasing interest due to the availability of feedstock, the simplicity of the preparation methods, and their enhanced physico-chemical properties. The efficacy of biochar to remove organic and inorganic pollutants depends on its surface area, pore size distribution, surface functional groups, and the size of the molecules to be removed, while the physical architecture and surface properties of biochar depend on the nature of feedstock and the preparation method/conditions. For instance, pyrolysis at high temperatures generally produces hydrophobic biochars with higher surface area and micropore volume, allowing it to be more suitable for organic contaminants sorption, whereas biochars produced at low temperatures own smaller pore size, lower surface area, and higher oxygen-containing functional groups and are more suitable to remove inorganic contaminants. In the field of water/wastewater treatment, biochar can have extensive application prospects. Biochar have been widely used as an additive/support media during anaerobic digestion and as filter media for the removal of suspended matter, heavy metals and pathogens. Biochar was also tested for its efficiency as a support-based catalyst for the degradation of dyes and recalcitrant contaminants. The current review discusses on the different methods for biochar production and provides an overview of current applications of biochar in wastewater treatment.
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Messineo A, Maniscalco MP, Volpe R. Biomethane recovery from olive mill residues through anaerobic digestion: A review of the state of the art technology. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 703:135508. [PMID: 31761373 DOI: 10.1016/j.scitotenv.2019.135508] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 11/11/2019] [Accepted: 11/12/2019] [Indexed: 06/10/2023]
Abstract
Residues from production of olive oil are generated yearly in great amounts, both in liquid and solid forms. Different waste treatment systems were proposed in literature, to minimize environmental pollution while raising the energy recovery. Anaerobic digestion is one of the available routes to recover energy from waste via production of biogas while reducing organic load and pollutants to the environment. The use of farming and agro industrial wastes as co-substrate in anaerobic digestion can induce benefits related to the simultaneous treatment of different wastes. In particular, co-digestion can significantly enhance the process stability as well as the bio-methane generation. This work aims at reviewing the latest achievements in anaerobic digestion of olive mill residues, focusing on the aspects that can mostly favor the process, principally from a technical but also from an economical point of view. For the mono-digestion processes, methane yields up to 419 LCH4 kgVS-1 were reported for olive mill wastewaters (Calabrò et al. 2018), while a production of 740 LCH4 kgVS-1 was achieved when digesting olive mill solid waste together with olive mill wastewater and milk whey (Battista et al. 2015). An increase up to 143% in the methane yield was also reported when the feedstock was subjected to a 5 days aeration before digesting it in a semi-continuous stirred tank reactor (González-González and Cuadros 2015).
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Affiliation(s)
- Antonio Messineo
- Faculty of Engineering and Architecture, Kore University of Enna, Cittadella Universitaria, Enna, Italy.
| | | | - Roberto Volpe
- School of Engineering and Materials Science, Queen Mary University, London, United Kingdom
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