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Shitu A, Chen W, Tadda MA, Zhang Y, Ye Z, Liu D, Zhu S, Zhao J. Enhanced aquaculture wastewater treatment in a biofilm reactor filled with sponge/ferrous oxalate/biochar composite (Sponge-C 2FeO 4@NBC) biocarriers: Performance and mechanism. CHEMOSPHERE 2023; 330:138772. [PMID: 37098362 DOI: 10.1016/j.chemosphere.2023.138772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 03/14/2023] [Accepted: 04/22/2023] [Indexed: 05/14/2023]
Abstract
Fabricating low-cost and efficient biofilm carriers for moving bed biofilm reactors in wastewater treatment is crucial for achieving environmental sustainability. Herein, a novel sponge biocarrier doped with NaOH-loaded biochar and nano ferrous oxalate (sponge-C2FeO4@NBC) was prepared and evaluated for nitrogenous compounds removal from recirculating aquaculture systems (RAS) wastewater by stepwise increasing ammonium nitrogen (NH4+-N) loading rates. The prepared NBC, sponge-C2FeO4@NBC, and matured biofilms were characterized using SEM, FTIR, BET, and N2 adsorption-desorption techniques. The results reveal that the highest removal rates of NH4+-N reached 99.28 ± 1.3% was yielded by the bioreactor filled with sponge-C2FeO4@NBC, with no obvious nitrite (NO2--N) accumulation in the final phase. The reactor packed with sponge-C2FeO4@NBC biocarrier had the highest relative abundance of functional microorganisms responsible for nitrogen metabolism than in the control reactor, confirmed from 16S rRNA gene sequencing analysis. Our study provides new insights into the newly developed biocarriers for enhancing RAS biofilters treatment performance in keeping water quality within the acceptable level for the rearing of aquatic species.
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Affiliation(s)
- Abubakar Shitu
- College of Bio-systems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China; Department of Agricultural and Environmental Engineering, Faculty of Engineering, Bayero University, Kano, Nigeria.
| | - Wei Chen
- College of Bio-systems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
| | - Musa Abubakar Tadda
- College of Bio-systems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China; Department of Agricultural and Environmental Engineering, Faculty of Engineering, Bayero University, Kano, Nigeria
| | - Yadong Zhang
- College of Bio-systems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
| | - Zhangying Ye
- College of Bio-systems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China; Ocean Academy, Zhejiang University, Zhoushan, 316021, China
| | - Dezhao Liu
- College of Bio-systems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
| | - Songming Zhu
- College of Bio-systems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China; Ocean Academy, Zhejiang University, Zhoushan, 316021, China.
| | - Jian Zhao
- College of Bio-systems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China.
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Tadda MA, Gouda M, Shitu A, Yu Q, Zhao X, Ying L, Zhu S, Liu D. Baobab fruit powder promotes denitrifiers’ abundance and improves poly(butylene succinate) biodegradation for a greener environment. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 2023; 11:109654. [DOI: 10.1016/j.jece.2023.109654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
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Noor A, Mohamed Kutty SR, Baloo L, Affam AC, Jagaba AH, Saeed Ghaleb AA, Yahya Almahbashi NM, Ahmad T, Nawab MS, Birniwa AH. Parametric optimization of additive manufactured biocarrier submerged in sequencing batch reactor for domestic wastewater treatment. Heliyon 2023; 9:e14840. [PMID: 37025813 PMCID: PMC10070916 DOI: 10.1016/j.heliyon.2023.e14840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 02/21/2023] [Accepted: 03/20/2023] [Indexed: 03/29/2023] Open
Abstract
The high nutrient concentration in domestic wastewater effluent can endanger the aquatic life via eutrophication. Thus, research have been carried out to prevent harm to aquatic life. In regard biofilm reactors have been successful by far with few limitations. Bio-carrier fabrication of desired shape is one of the limitations. Recently, the invention of additive manufacturing (AM) of object made it feasible to fabricate the desired shape. In this study additive manufactured bio‒carrier (AMB) was printed using AM technique, with high surface area to volume ratio as well as density higher than water. The submerged attach growth sequencing batch biofilm reactor (SAGSBBR) for organic and nutrient removal from domestic wastewater (DWW) was conducted to determine the optimum bio‒carrier filling ratio (FR) and cycle time (CT) by using response surface methodology (RSM) with CT ranging between 12 h and 24 h and FR ranging between 0 and 20%. The maximum chemical oxygen demand (COD), ammonia-nitrogen (NH4 +‒N), and total phosphorus (TP) removal was 96.8 mg/L, 93.32 mg/L, and 88.89 mg/L respectively, which was achieved in submerged attached growth sequential biofilm batch reactor with 10% FR (SAGSBBR‒10). The optimization study determined the optimal solution of CT and FR to be 17.07 h and 12.38% respectively, with desirability of 0.987. The predicted mean of responses for the optimal solution were 96.64%, 94.40% and 89.94% for COD removal, NH4 +‒N removal and TP removal, respectively. The rate of biomass attachment at the first stage in SAGSBBR‒10 and SAGSBBR‒20 was about 11.39 mg/carrier.d and 8.64 mg/carrier.d, whereas the highest accumulation achieved was 98.27 mg/carrier and 80.15 mg/carrier respectively. Thus, this study can assist us to achieve sustainable development goal (SDG) 6.
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Affiliation(s)
- Azmatullah Noor
- Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, 32610, Bandar Seri Iskandar, Perak Darul Ridzuan, Malaysia
- Corresponding author.
| | - Shamsul Rahman Mohamed Kutty
- Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, 32610, Bandar Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Lavania Baloo
- Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, 32610, Bandar Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Augustine Chioma Affam
- Centre for Research of Innovation and Sustainable Development, University of Technology Sarawak, No. 1, Jalan University, 96000, Sibu, Malaysia
| | - Ahmad Hussaini Jagaba
- Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, 32610, Bandar Seri Iskandar, Perak Darul Ridzuan, Malaysia
- Department of Civil Engineering, Abubakar Tafawa Balewa University, Bauchi, Nigeria
| | - Aiban Abdulhakim Saeed Ghaleb
- Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, 32610, Bandar Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Najib Mohammed Yahya Almahbashi
- Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, 32610, Bandar Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Tarique Ahmad
- Department of Civil Engineering, College of Engineering, Jazan University, Jazan, Kingdom of Saudi Arabia
| | - Mohammad Sadique Nawab
- Department of Civil Engineering, College of Engineering, Shaqra University, Dawadmi, Kingdom of Saudi Arabia
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Yang YR, Wang XD, Chang JS, Lee DJ. Homogeneously and heterogeneously structured biofilm models for wastewater treatment. BIORESOURCE TECHNOLOGY 2022; 362:127763. [PMID: 35964918 DOI: 10.1016/j.biortech.2022.127763] [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: 07/26/2022] [Revised: 08/04/2022] [Accepted: 08/06/2022] [Indexed: 06/15/2023]
Abstract
Biofilm, a layer comprising extracellular polymeric substances, is the platform where the embedded living cells degrade the substances in the wastewaters. Biofilm models have been developed as part of the comprehensive models for the wastewater treatment process. This review summarizes the biofilm models applied in contemporary literature based on the spatial dimensions adopted for model build-up. The most commonly applied biofilm models are null-dimensional, considering the biofilm active biomass for the substrate sink's biological reaction. The one-dimensional, multi-species models are the second standard models for contemporary studies, providing transport and reaction resistances of substrates in the biofilm matrix and the interactions of competing or collaborating strains in the biofilm. The structural homogeneity of the biofilm challenges the validity of the uniformly structured models, highlighting the need to re-examine the validity of the uniformly structured models. The challenges and prospects of biofilm model developments and applications are outlined.
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Affiliation(s)
- Yan-Ru Yang
- Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China; School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
| | - Xiao-Dong Wang
- Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China; School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
| | - Jo-Shu Chang
- Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung 407, Taiwan; Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan; Department of Chemical and Materials Engineering, Tunghai University, Taichung 407, Taiwan
| | - Duu-Jong Lee
- Department of Mechanical Engineering, City University of Hong Kong, Kowloon Tong, Hong Kong; Department of Chemical Engineering & Materials Science, Yuan Ze University, Chung-Li, 32003, Taiwan.
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Abstract
With the rapid development of intensive mariculture, lots of mariculture wastewaters containing residual feed and excrements are discharged into marinelands, leading to coastal pollution. Recently, the environmental problems caused by the discharge of mariculture wastewater have been paid much attention, as have other breeding industries in China. In fact, organic solid waste accounts for most of the pollutants and can be reduced by precipitation or filtration technologies, after which the supernatant can be easily treated by ecological methods. Some national guidelines and relevant local standards have been issued to strictly control the mariculture wastewater, but there are still few effective technologies for mariculture wastewater treatment due to its high salinity and extremely low pollutant concentration. This paper aims to propose feasible pollution control methods of mariculture wastewater according to the wastewater characteristics from different mariculture modes. For raw ammonia-based wastewater, it should be sequentially treated by precipitation, nitrification and denitrification and ecological methods, which would target solid waste, organic carbon/nitrogen and phosphorus removal, respectively. For the nitrate-based wastewater, this just needs denitrification filters and ecological methods for nitrate and phosphorus removal. After an overview of pollution control strategies for different types and scales of industrial mariculture wastewater treatment, some challenges are also mentioned.
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