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Xiao Z, Fang Q, Zhou W, Ding W, Zhu J, Guo X, Liang G. Enhanced hydrolysis of waste activated sludge and recovery of volatile fatty acids: Performance and mechanistic analysis of synergistic treatment with sodium citrate and calcium oxide. BIORESOURCE TECHNOLOGY 2024; 407:131143. [PMID: 39043280 DOI: 10.1016/j.biortech.2024.131143] [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: 03/27/2024] [Revised: 06/30/2024] [Accepted: 07/19/2024] [Indexed: 07/25/2024]
Abstract
Anaerobic fermentation has emerged as a promising method of transforming waste activated sludge into high-value products (e.g., volatile fatty acids (VFAs)). This work developed sodium citrate (SC)-calcium oxide (CaO) pretreatment to accelerate the production of VFAs by enhancing sludge solubilization and disintegration of extracellular polymeric substances. The results showed that co-pretreatment with 0.25 g/g TSS of SC and 0.05 g/g TSS of CaO effectively boosted VFAs accumulation (5823.3 mg COD/L), which was 12.2 times higher than the Control group. SC-CaO pretreatment enhanced hydrolysis and acidogenesis by providing ample organic substrates, thereby promoting the growth of hydrolytic and acidogenic bacteria. Additionally, the fermentation broth resulting from co-pretreatment exhibited lower phosphorus concentration and higher biodegradability. Economic analysis confirmed that the combined pretreatment is cost-effective. This work provides a viable strategy for enhancing high-value product recovery from sludge.
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Affiliation(s)
- Zilong Xiao
- Department of Municipal Engineering, College of Civil and Transportation Engineering, Guangzhou University, Guangzhou, PR China
| | - Qian Fang
- Department of Municipal Engineering, College of Civil and Transportation Engineering, Guangzhou University, Guangzhou, PR China.
| | - Wuyang Zhou
- Department of Municipal Engineering, College of Civil and Transportation Engineering, Guangzhou University, Guangzhou, PR China; Research Center, Guangzhou Municipal Engineering Design & Research Institute CO., Ltd, Guangzhou, PR China
| | - Wenxue Ding
- Guangzhou Sciencecity Drainage Management CO., Ltd, Guangzhou, PR China
| | - Jiang Zhu
- Department of Municipal Engineering, College of Civil and Transportation Engineering, Guangzhou University, Guangzhou, PR China
| | - Xiaomin Guo
- Department of Municipal Engineering, College of Civil and Transportation Engineering, Guangzhou University, Guangzhou, PR China
| | - Guirong Liang
- Department of Municipal Engineering, College of Civil and Transportation Engineering, Guangzhou University, Guangzhou, PR China
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2
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Zhang H, Zhao J, Fu Z, Wang Y, Guan D, Xie J, Zhang Q, Liu Q, Wang D, Sun Y. Metagenomic approach reveals the mechanism of calcium oxide improving kitchen waste dry anaerobic digestion. BIORESOURCE TECHNOLOGY 2023; 387:129647. [PMID: 37567350 DOI: 10.1016/j.biortech.2023.129647] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 08/01/2023] [Accepted: 08/05/2023] [Indexed: 08/13/2023]
Abstract
In light of the characteristics of excessive acidification and low biogas yield during kitchen waste (KW) dry digestion, the impact of the calcium oxide (CaO) on KW mesophilic dry digestion was investigated, and the enhanced mechanism was revealed through metagenomic approach. The results showed that CaO increased the biogas production, when the CaO dosage was 0.07 g/g (based on total solid), the biogas production reached 656.84 mL/g suspended solids (VS), approximately 8.38 times of that in the control. CaO promoted the leaching and hydrolysis of key organic matter in KW. CaO effectively promoted the conversion of volatile fatty acid (VFA) and mitigated over-acidification. Macrogenome analysis revealed that CaO increased the microbial diversity in KW dry digestion and upregulated the abundance of genes related to amino acid and carbohydrates metabolism. This study provides an effective strategy with potential economic benefits to improve the bioconversion efficiency of organic matter in KW.
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Affiliation(s)
- Hongying Zhang
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, PR China
| | - Jianwei Zhao
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, PR China.
| | - Zhou Fu
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, PR China
| | - Yuxin Wang
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, PR China
| | - Dezheng Guan
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, PR China
| | - Jingliang Xie
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, PR China
| | - Qi Zhang
- Qingdao Jiebao Ecological Technology Co., Ltd., Qingdao 266000, PR China
| | - Qingxin Liu
- Qingdao Jiebao Ecological Technology Co., Ltd., Qingdao 266000, PR China
| | - Dongbo Wang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China
| | - Yingjie Sun
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, PR China
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3
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Yin Z, Wang J, Wang M, Liu J, Chen Z, Yang B, Zhu L, Yuan R, Zhou B, Chen H. Application and improvement methods of sludge alkaline fermentation liquid as a carbon source for biological nutrient removal: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 873:162341. [PMID: 36828064 DOI: 10.1016/j.scitotenv.2023.162341] [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: 12/04/2022] [Revised: 02/15/2023] [Accepted: 02/15/2023] [Indexed: 06/18/2023]
Abstract
Alkaline fermentation can reduce the amount of waste activated sludge and prepare sludge alkaline fermentation liquid (SAFL) rich in short-chain fatty acids (SCFAs), which can be used as a high-quality carbon source for the biological nutrient removal (BNR) process. This review compiles the production method of SAFL and the progress of its application as a BNR carbon source. Compared with traditional carbon sources, SAFL has the advantages of higher efficiency and economy, and different operating conditions can influence the yield and structure of SCFAs in SAFL. SAFL can significantly improve the nutrient removal efficiency of the BNR process. Taking SAFL as the internal carbon source of BNR can simultaneously solve the problem of carbon source shortage and sludge treatment difficulties in wastewater treatment plants, and further reduce the operating cost. However, the alkaline fermentation process results in many refractory organics, ammonia and phosphate in SAFL, which reduces the availability of SAFL as a carbon source. Purifying SCFAs by removing nitrogen and phosphorus, directly extracting SCFAs, or increasing the amount of SCFAs in SAFL by co-fermentation or combining with other pretreatment methods, etc., are effective measures to improve the availability of SAFL.
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Affiliation(s)
- Zehui Yin
- School of Energy and Environmental Engineering, Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, China
| | - Jihong Wang
- School of Energy and Environmental Engineering, Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, China
| | - Mingran Wang
- School of Energy and Environmental Engineering, Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, China
| | - Jiandong Liu
- School of Energy and Environmental Engineering, Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, China
| | - Zhongbing Chen
- Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Praha, Suchdol 165 00, Czech Republic
| | - Boyu Yang
- Nanjing Academy of Resources and Ecology Sciences, No. 606, Ningliu Road, Jiangbei New District, 210044 Nanjing, China
| | - Lixin Zhu
- Sinopec Nanjing Chemical Industries Co., Ltd., No. 189, Geguan Road, Liuhe District, Jiangsu 210048, Nanjing, China
| | - Rongfang Yuan
- School of Energy and Environmental Engineering, Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, China.
| | - Beihai Zhou
- School of Energy and Environmental Engineering, Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, China
| | - Huilun Chen
- School of Energy and Environmental Engineering, Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, China.
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Wu Y, Wu Z, Yang C, Yue X, Zhou A, Song X, Su B. Layered double hydroxides for phosphorus recovery from lipid-rich waste anaerobic fermentation liquor. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 326:116759. [PMID: 36399888 DOI: 10.1016/j.jenvman.2022.116759] [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: 09/15/2022] [Revised: 11/09/2022] [Accepted: 11/09/2022] [Indexed: 06/16/2023]
Abstract
This study aimed to extract orthophosphate (ortho-P) from lipid-rich waste AF liquor (AFL) by Mg/Al layered double hydroxides (Mg/Al LDHs) adsorption, evaluate the influence of carbonate and investigate adsorption mechanisms. The carbonate influence experiment using synthetic P-rich wastewater indicated that low carbonate level was favorable for P extraction by LDHs. And then, real AFL rich in volatile fatty acids (VFAs), carbonate and ortho-P was applied as adsorbate to explore the Mg/Al LDHs adsorption performance. Experimental results indicated that 4 g/L Mg/Al LDHs could extract 88.3% of ortho-P from the AFL with low carbonate level (4829.83 mg CaCO3/L), and the adsorption quantity was 62.99 mg P/g LDHs, however, negligible VFAs were extracted. Kinetics and mechanisms analysis indicated that adsorption of P onto Mg/Al LDHs was a rapid physiochemical process, including ion exchange and surface adsorption. Finally, the nutrients release test confirmed the slow-release property of intercalated P.
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Affiliation(s)
- Yuqi Wu
- College of Environmental Science and Engineering, Taiyuan University of Technology, 209 Daxue Road, Jinzhong, 030600, PR China.
| | - Zichuan Wu
- College of Environmental Science and Engineering, Taiyuan University of Technology, 209 Daxue Road, Jinzhong, 030600, PR China
| | - Chunfan Yang
- College of Environmental Science and Engineering, Taiyuan University of Technology, 209 Daxue Road, Jinzhong, 030600, PR China
| | - Xiuping Yue
- College of Environmental Science and Engineering, Taiyuan University of Technology, 209 Daxue Road, Jinzhong, 030600, PR China
| | - Aijuan Zhou
- College of Environmental Science and Engineering, Taiyuan University of Technology, 209 Daxue Road, Jinzhong, 030600, PR China
| | - Xiulan Song
- College of Environmental Science and Engineering, Taiyuan University of Technology, 209 Daxue Road, Jinzhong, 030600, PR China; National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing, 100124, PR China
| | - Bingqin Su
- College of Environmental Science and Engineering, Taiyuan University of Technology, 209 Daxue Road, Jinzhong, 030600, PR China
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Wu Y, Yue X, Zhou A, Song X, Su B, Cao F, Ding J. Simultaneous recovery of short-chain fatty acids and phosphorus during lipid-rich anaerobic fermentation with sodium hydroxide conditioning. CHEMOSPHERE 2023; 312:137227. [PMID: 36379433 DOI: 10.1016/j.chemosphere.2022.137227] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/08/2022] [Accepted: 11/09/2022] [Indexed: 06/16/2023]
Abstract
Anaerobic fermentation (AF) could achieve simultaneous recovery of short-chain fatty acids (SCFAs) and phosphorus (P) when waste activated sludge (WAS) and meat processing waste (MPW) act as co-substrate. However, long-chain fatty acids, the degradation intermediates of lipids, always inhibit anaerobic microbial activity. Therefore, sodium hydroxide (NaOH) conditioning was applied to improve the lipid-rich AF performance in this study. The results demonstrated that 96% WAS (v/v) with NaOH addition that remaining at pH 7.5 could achieve the maximum SCFAs yield (1180.05 mg/g VSfed) at 12 d, and ortho-P content in the AF liquor (AFL) was much more than that of without NaOH addition. Anaerovibrio and Aminobacterium, one kind of lipolytic and proteolytic bacteria, respectively, became the major genus in the lipid-rich AF system. 86% of P in the AFL from 96% WAS + pH 7.5 reactor was recovered through vivianite crystallization method, with 91% of SCFAs remaining in the post-AFL. Meanwhile, analysis results verified vivianite formation in the P precipitate products. Overall, this study provided a new idea to achieve SCFAs and P simultaneous recovery from WAS and MPW through AF with NaOH conditioning and vivianite crystallization.
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Affiliation(s)
- Yuqi Wu
- College of Environmental Science and Engineering, Taiyuan University of Technology, 209 Daxue Road, Jinzhong, 030600, PR China.
| | - Xiuping Yue
- College of Environmental Science and Engineering, Taiyuan University of Technology, 209 Daxue Road, Jinzhong, 030600, PR China
| | - Aijuan Zhou
- College of Environmental Science and Engineering, Taiyuan University of Technology, 209 Daxue Road, Jinzhong, 030600, PR China
| | - Xiulan Song
- College of Environmental Science and Engineering, Taiyuan University of Technology, 209 Daxue Road, Jinzhong, 030600, PR China
| | - Bingqin Su
- College of Environmental Science and Engineering, Taiyuan University of Technology, 209 Daxue Road, Jinzhong, 030600, PR China
| | - Fang Cao
- College of Environmental Science and Engineering, Taiyuan University of Technology, 209 Daxue Road, Jinzhong, 030600, PR China
| | - Jianzhi Ding
- Taiyuan Design Research Institute for Coal Industry, 18 Qingnian Road, Taiyuan, 030001, PR China
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6
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Development of a novel agar extraction method using calcium hydroxide and carbon dioxide. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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8
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Dissolution of Portlandite in Pure Water: Part 2 Atomistic Kinetic Monte Carlo (KMC) Approach. MATERIALS 2022; 15:ma15041442. [PMID: 35207982 PMCID: PMC8874609 DOI: 10.3390/ma15041442] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/10/2022] [Accepted: 02/11/2022] [Indexed: 02/04/2023]
Abstract
Portlandite, as a most soluble cement hydration reaction product, affects mechanical and durability properties of cementitious materials. In the present work, an atomistic kinetic Monte Carlo (KMC) upscaling approach is implemented in MATLAB code in order to investigate the dissolution time and morphology changes of a hexagonal platelet portlandite crystal. First, the atomistic rate constants of individual Ca dissolution events are computed by a transition state theory equation based on inputs of the computed activation energies (ΔG*) obtained through the metadynamics computational method (Part 1 of paper). Four different facets (100 or 1¯00, 010 or 01¯0, 1¯10 or 11¯0, and 001 or 001¯) are considered, resulting in a total of 16 different atomistic event scenarios. Results of the upscaled KMC simulations demonstrate that dissolution process initially takes place from edges, sides, and facets of 010 or 01¯0 of the crystal morphology. The steady-state dissolution rate for the most reactive facets (010 or 01¯0) was computed to be 1.0443 mol/(s cm2); however, 0.0032 mol/(s cm2) for 1¯10 or 11¯0, 2.672 × 10−7 mol/(s cm2) for 001 or 001¯, and 0.31 × 10−16 mol/(s cm2) for 100 or 1¯00 were represented in a decreasing order for less reactive facets. Obtained upscaled dissolution rates between each facet resulted in a huge (16 orders of magnitude) difference, reflecting the importance of crystallographic orientation of the exposed facets.
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9
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Coşgun S, Kara B, Kunt B, Hür C, Semerci N. Biological recovery of phosphorus from waste activated sludge via alkaline fermentation and struvite biomineralization by Brevibacterium antiquum. Biodegradation 2022; 33:195-206. [PMID: 35142960 DOI: 10.1007/s10532-022-09975-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 02/01/2022] [Indexed: 11/27/2022]
Abstract
Struvite biomineralization is a promising method for phosphorus recovery from wastewater treatment plant streams, and the growth of responsible microorganisms in mixed cultures is one of the most critical points for applying this process in pilot and full-scale. This study aimed to investigate the growth and bio-struvite production of Brevibacterium antiquum in mixed sludge culture. Alkaline fermentation was applied at different pH conditions to enhance the phosphorus content of sludge for an efficient recovery, and pH 8 was determined as the most feasible considering the phosphorus release and sludge characteristics. Growth optimization studies showed that NaCl's presence decreases the growth rate of Brevibacterium antiquum and bio-struvite production. At the same time, pH in the range of 6.8-8.2 did not alter the growth significantly. In addition, studies showed the ability of Brevibacterium antiquum in unsterilized fermented sludge centrate to grow and recover the phosphorus as struvite. Thus, our results indicated the potential of struvite biomineralization in full-scale wastewater treatment plants.
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Affiliation(s)
- Sevil Coşgun
- Environmental Engineering Department, Institute of Pure and Applied Sciences, Marmara University, Kuyubaşı, Istanbul, Turkey.
- Institute of Plant Sciences and Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland.
| | - Büşra Kara
- Environmental Engineering Department, Institute of Pure and Applied Sciences, Marmara University, Kuyubaşı, Istanbul, Turkey
| | - Büşra Kunt
- Environmental Engineering Department, Institute of Pure and Applied Sciences, Marmara University, Kuyubaşı, Istanbul, Turkey
| | - Ceren Hür
- Environmental Engineering Department, Institute of Pure and Applied Sciences, Marmara University, Kuyubaşı, Istanbul, Turkey
| | - Neslihan Semerci
- Environmental Engineering Department, Faculty of Engineering, Marmara University, Kuyubaşı, Istanbul, Turkey
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Yu B, Xiao X, Wang J, Hong M, Deng C, Li YY, Liu J. Enhancing phosphorus recovery from sewage sludge using anaerobic-based processes: Current status and perspectives. BIORESOURCE TECHNOLOGY 2021; 341:125899. [PMID: 34523558 DOI: 10.1016/j.biortech.2021.125899] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/30/2021] [Accepted: 09/03/2021] [Indexed: 06/13/2023]
Abstract
Anaerobic-based processes are green and sustainable technologies for phosphorus (P) recovery from sewage sludges economically and are promising in practical application. However, the P release efficiency is always not satisfied. In this paper, the P release mechanisms (regarding to different P species) from sewage sludge using anaerobic-based processes are systematically summarized. The obstacles of P release and the updated achievements of enhancing P release from sewage sludges are analyzed and discussed. It can be concluded that different P species can release from sewage sludge via different anaerobic-based processes. Extracellular polymeric substances and excessive metal ions are the two main limiting factors to P release. Acid fermentation and anaerobic fermentation with sulfate reduction could be two promising ways, with P release efficiencies of up to 64% and 63%. Based on the summarization and discussion, perspectives on practical application of P recovery from sewage sludge using anaerobic-based processes are proposed.
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Affiliation(s)
- Bohan Yu
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
| | - Xiangmin Xiao
- Cangzhou Water Supply and Drainage Group Company Limited, 15 West Jiuhe Road, Canghzou, Hebei Province 061001, China
| | - Jianwei Wang
- Cangzhou Water Supply and Drainage Group Company Limited, 15 West Jiuhe Road, Canghzou, Hebei Province 061001, China
| | - Meng Hong
- Cangzhou Water Supply and Drainage Group Company Limited, 15 West Jiuhe Road, Canghzou, Hebei Province 061001, China
| | - Chao Deng
- Cangzhou Water Supply and Drainage Group Company Limited, 15 West Jiuhe Road, Canghzou, Hebei Province 061001, China
| | - Yu-You Li
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Jianyong Liu
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China.
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Wang J, Liu GH, Shao Y, Zhang Q, Wei Q, Luo F, Sun W, Liu S, Liu Y, Zhang J, Qi L, Wang H. Regulation of anaerobic fermentation for producing short-chain fatty acids from primary sludge in WWTPs by different alkalis. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 299:113623. [PMID: 34481372 DOI: 10.1016/j.jenvman.2021.113623] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 08/12/2021] [Accepted: 08/23/2021] [Indexed: 06/13/2023]
Abstract
Carbon source production from primary sludge in wastewater treatment plants (WWTPs) via anaerobic fermentation process has been paid more attention. However, slow hydrolysis rate and low yield of short-chain fatty acids (SCFAs) limited its application. This study aimed at improving the anaerobic fermentation efficiency of primary sludge by alkali regulation (NaOH, Na2CO3 and Ca(OH)2), and revealing the mechanism. Results showed that three kinds of alkalis allowed enhancing hydrolysis and acidification, and reducing methane production in the anaerobic fermentation process of primary sludge. The Na2CO3 regulation contributed to highest yield and productivity of SCFAs, reaching 1626 mg COD/L and 0.189 g COD/g VSS at 4th day, respectively. Microbial community structure analysis indicated that the relative abundance of fermentative microbial community was improved in the alkali regulation system, where methanogenic archaea was effectively inhibited. The continuous flow experiment further verified that the Na2CO3 regulation could steadily increase yield of SCFAs in the anaerobic fermentation process of primary sludge, and the yield was also the highest among three kinds of alkali regulation.
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Affiliation(s)
- Jian Wang
- Low-carbon Water Environmental Technology Center, School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing, 100872, PR China
| | - Guo-Hua Liu
- Low-carbon Water Environmental Technology Center, School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing, 100872, PR China.
| | - Yuting Shao
- Low-carbon Water Environmental Technology Center, School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing, 100872, PR China
| | - Qian Zhang
- Low-carbon Water Environmental Technology Center, School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing, 100872, PR China
| | - Qi Wei
- Low-carbon Water Environmental Technology Center, School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing, 100872, PR China
| | - Fangzhou Luo
- Low-carbon Water Environmental Technology Center, School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing, 100872, PR China
| | - Wenzhuo Sun
- Low-carbon Water Environmental Technology Center, School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing, 100872, PR China
| | - Shuai Liu
- Low-carbon Water Environmental Technology Center, School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing, 100872, PR China
| | - Yuchen Liu
- Low-carbon Water Environmental Technology Center, School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing, 100872, PR China
| | - Jingbing Zhang
- Low-carbon Water Environmental Technology Center, School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing, 100872, PR China
| | - Lu Qi
- Low-carbon Water Environmental Technology Center, School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing, 100872, PR China
| | - Hongchen Wang
- Low-carbon Water Environmental Technology Center, School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing, 100872, PR China
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12
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Yu N, Sun H, Mou A, Liu Y. Calcium hypochlorite enhances the digestibility of and the phosphorus recovery from waste activated sludge. BIORESOURCE TECHNOLOGY 2021; 340:125658. [PMID: 34332447 DOI: 10.1016/j.biortech.2021.125658] [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: 06/03/2021] [Revised: 07/19/2021] [Accepted: 07/22/2021] [Indexed: 06/13/2023]
Abstract
Waste activated sludge (WAS) can be treated using anaerobic digestion (AD) for biogas recovery and volume reduction. However, the poor digestibility and hydrolysis of WAS limit AD applications. The current study investigated the feasibility of applying calcium hypochlorite as a WAS pretreatment strategy to improve AD treatment efficiency using laboratory reactors. The results showed that pretreatment with 5 - 20% Ca(ClO)2 (total suspended solids basis) significantly enhanced WAS anaerobic digestibility, and led to significantly enhanced methane production rate and biomethane yield comparing to the AD of raw WAS (P < 0.05). Low Ca(ClO)2 pretreatment (5 - 10%) significantly enhanced digestion efficiency, which can be attributed to the development of fermentative and syntrophic bacteria. However, high Ca(ClO)2 doses (>20%) reduced microbial activities, leading to slow release of dissolved organic compounds and prolonged methane production lag phase. In addition, high Ca(ClO)2 removed 82.7% of the initial phosphate by calcium-phosphate binding, reducing the phosphorus in liquid digestate.
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Affiliation(s)
- Najiaowa Yu
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Huijuan Sun
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Anqi Mou
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Yang Liu
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada.
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13
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Zhang W, Dong T, Cheng H, Wu H, Wu C, Hu A, Wang D. Preparation of composite sludge carbon-based materials by LDHs conditioning and carbonization and its application in the simultaneous removal of dissolved organic matter and phosphate in sewage. CHEMOSPHERE 2021; 270:129485. [PMID: 33418220 DOI: 10.1016/j.chemosphere.2020.129485] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 12/06/2020] [Accepted: 12/28/2020] [Indexed: 06/12/2023]
Abstract
In this work, a novel carbon-based hydrotalcite-like compounds materials (LDO-SBCs) were prepared by coupling layered double hydroxides (LDHs) conditioning and pyrolytic carbonization, and characterized by X-ray diffraction (XRD), Thermogravimetric Analyzer (TGA), X-ray photoelectron spectroscopy (XPS) and Brunner-Emmet-Teller (BET) measurements. The synthesized LDO-SBCs composites were used in wastewater treatment for simultaneous removal of phosphate and dissolved organic matter (DOM). The adsorption of DOM and phosphate were well conformed to pseudo-second-order mode. Adsorption equilibrium was better fitted by Langmuir model for phosphate, while Freundlich model for DOM. Compared with the raw sludge carbon, the removal efficiency of DOM and phosphate by LDO-SBCs were increased by 8% and 13%, respectively. Based on the fluorescence spectrum and parallel factor analysis (PARAFAC), LDO-SBCs performed well in promoting the removal of protein substances (TPN and APN). Pore filling, hydrogen bonding, electrostatic adsorption and surface complexation might be dominant in the adsorption of DOM, while, surface complexation and ion exchange between the LDO layers were mainly responsible for the adsorption of phosphate. The difference of adsorption capacity of LDO-SBCs was related to the superior channel structure of composite materials and the composition of interlayer anions of LDO.
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Affiliation(s)
- Weijun Zhang
- School of Environmental Studies, China University of Geosciences, Wuhan, Hubei, 430074, China
| | - Tianyi Dong
- School of Environmental Studies, China University of Geosciences, Wuhan, Hubei, 430074, China
| | - Haowan Cheng
- School of Environmental Studies, China University of Geosciences, Wuhan, Hubei, 430074, China
| | - Hanjun Wu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, Hubei, 430074, China; Hubei Provincial Engineering Research Center of Systematic Water Pollution Control, China University of Geosciences, Wuhan, Hubei, 430074, China.
| | - Chunxu Wu
- School of Environment, Tsinghua University, Beijing, 100085, China
| | - Aibin Hu
- School of Environmental Studies, China University of Geosciences, Wuhan, Hubei, 430074, China
| | - Dongsheng Wang
- School of Environmental Studies, China University of Geosciences, Wuhan, Hubei, 430074, China; State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
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14
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Rodriguez LEG, Bail A, Castillo RO, Arízaga GGC. Removal and Extraction of Carboxylic Acids and Non-ionic Compounds with Simple Hydroxides and Layered Double Hydroxides. Curr Pharm Des 2020; 26:650-663. [PMID: 31878850 DOI: 10.2174/1381612826666191226103623] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 12/18/2019] [Indexed: 01/30/2023]
Abstract
Carboxylic acids are an important natural component as a final product or intermediates for syntheses. They are produced in plants, animals and also as products from biotechnological processes. This review presents the use of single hydroxide particles and layered double hydroxides as alternative adsorbents to remove carboxylic acids from liquid media. The proposal to use hydroxide particles is based on its affinity to adsorb or intercalate carboxylic acids. Besides, the change in properties of the adsorbate-sorbate product evinces that this intermediate can be used as a vehicle to transport and release carboxylic acids. Additional examples will also be presented to prove that layered hydroxides are capable of removing non-ionic compounds from wine, milk and tomato. The use of layered compounds to remove active ingredients could reduce the number of separations steps, costs and reduce or eliminate solvents, thus encouraging the design of industrial processes of separation using hydroxides particles.
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Affiliation(s)
- Luis E G Rodriguez
- Facultad de Ciencias Aplicadas a la Industria. Universidad de Camaguey "Ignacio Agramonte Loynaz". Circunvalacion Norte, km 5.5. C.P. 74650. Camaguey, Cuba
| | - Alesandro Bail
- Nucleo de Inovacao Industrial (NI2), Universidade Tecnologica Federal do Parana (UTFPR), CEP: 86812-460, Apucarana, Parana, Brazil
| | - Rodolfo O Castillo
- Departamento de Ingenieria Quimica, Universidad de Guadalajara, Marcelino Garcia Barragan 1421, C.P. 44430, Guadalajara, Jalisco, Mexico
| | - Gregorio G C Arízaga
- Departamento de Quimica, Universidad de Guadalajara, Marcelino Garcia Barragan 1421, C.P. 44430, Guadalajara, Jalisco, Mexico
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15
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Jafari M, Botte GG. Electrochemical treatment of sewage sludge and pathogen inactivation. J APPL ELECTROCHEM 2020. [DOI: 10.1007/s10800-020-01481-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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16
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Linyi C, Yujie Q, Buqing C, Chenglong W, Shaohong Z, Renglu C, Shaohua Y, Lan Y, Zhiju L. Enhancing degradation and biogas production during anaerobic digestion of food waste using alkali pretreatment. ENVIRONMENTAL RESEARCH 2020; 188:109743. [PMID: 32592938 DOI: 10.1016/j.envres.2020.109743] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 01/17/2020] [Accepted: 05/25/2020] [Indexed: 06/11/2023]
Abstract
Alkali pretreatment of anaerobic digestion (AD) was investigated as a strategy to degrade complex organic matter such as fats. AD of food waste (FW) with alkali pretreatment was conducted using batch assays and long-term experiments for 70 days in two reactors. The aim of this study was to compare the impact of alkali pretreatment on solubilization and biogas production and to evaluate the performance in reactors with that of the untreated FW. The alkali pretreatment enhanced the solubilization of organic matter. The best biogas yield (829 mL/g VS) and methane content (65.48%) were obtained by the pretreatment with 1% CaO with the highest Pi, n (66.06%) of biodegradable soluble materials. The long-term reactors with pretreatment performed more steadily with higher biogas production under organic loading rates (OLR) over 5 g VS/(L⋅d). The bacterial community structure was different under various conditions. Methanosaeta and Methanospirillum were the dominant archaea in this study, while Methanosaeta increased in R1 at OLR of 6 g VS/(L⋅d). The study concluded that alkali pretreatment with 1% CaO appeared as a potential strategy for AD of FW.
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Affiliation(s)
- Chen Linyi
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China
| | - Qin Yujie
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China.
| | - Chen Buqing
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China
| | - Wu Chenglong
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China
| | - Zheng Shaohong
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China
| | - Chen Renglu
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China
| | - Yang Shaohua
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China
| | - Yang Lan
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China
| | - Liu Zhiju
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China
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17
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Liu W, Yang H, Ye J, Luo J, Li YY, Liu J. Short-chain fatty acids recovery from sewage sludge via acidogenic fermentation as a carbon source for denitrification: A review. BIORESOURCE TECHNOLOGY 2020; 311:123446. [PMID: 32402992 DOI: 10.1016/j.biortech.2020.123446] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 04/19/2020] [Accepted: 04/21/2020] [Indexed: 06/11/2023]
Abstract
Wastewater treatment plants face the problem of a shortage of carbon source for denitrification. Acidogenic fermentation is an effective method for recovering short-chain fatty acids (SCFAs) as a carbon source from sewage sludge. Herein, the most recent advances in SCFAs production from primary sludge and waste activated sludge are systematically summarised and discussed. New technologies and problems pertaining to the improvement in SCFAs availability in fermentation liquids, including removal of ammoniacal nitrogen and phosphate and extraction of SCFAs from fermentation liquids, are analysed and evaluated. Furthermore, studies on the use of recovered SCFAs as a carbon source for denitrification are reviewed. Based on the above summarisation and discussion, some conclusions as well as perspectives on future studies and practical applications are presented. In particular, the recovery of carbon source/bioenergy from sewage sludge must be optimised considering nutrient removal/recovery simultaneously.
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Affiliation(s)
- Wen Liu
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
| | - Huan Yang
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
| | - Jiongjiong Ye
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
| | - Jinghuan Luo
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
| | - Yu-You Li
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China; Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Jianyong Liu
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China.
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18
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Ye M, Luo J, Zhang S, Yang H, Li YY, Liu J. In-situ ammonia stripping with alkaline fermentation of waste activated sludge to improve short-chain fatty acids production and carbon source availability. BIORESOURCE TECHNOLOGY 2020; 301:122782. [PMID: 31958689 DOI: 10.1016/j.biortech.2020.122782] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 01/04/2020] [Accepted: 01/07/2020] [Indexed: 06/10/2023]
Abstract
Alkaline fermentation of waste activated sludge (WAS) to produce short-chain fatty acids (SCFAs) has been proved to be promising to develop internal carbon source for denitrifying processes in municipal wastewater treatment plants. However, a large amount of ammoniacal nitrogen also releases during fermentation, resulting in inhibition of acidogenic process and reduction of carbon source availability. Alkaline fermentation of WAS combined with in-situ ammonia stripping was proposed to improve SCFAs production and carbon source availability simultaneously. The results showed that a maximal SCFAs production of 308.7 ± 4.8 mg chemical oxygen demand/g volatile suspended solid was achieved under the pH = 10 + In-situ ammonia stripping, which was 21.7% and 141.5% higher than that of the pH = 10 and the control, respectively. Most of the ammoniacal nitrogen was stripped out, and the WAS-derived SCFAs availability as carbon source increased by 103.2%. These findings indicate in-situ ammonia stripping could make alkaline fermentation of WAS more practical.
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Affiliation(s)
- Min Ye
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
| | - Jinghuan Luo
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
| | - Sitong Zhang
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
| | - Huan Yang
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
| | - Yu-You Li
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China; Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Jianyong Liu
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China.
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19
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Yang H, Liu J, Hu P, Zou L, Li YY. Carbon source and phosphorus recovery from iron-enhanced primary sludge via anaerobic fermentation and sulfate reduction: Performance and future application. BIORESOURCE TECHNOLOGY 2019; 294:122174. [PMID: 31563737 DOI: 10.1016/j.biortech.2019.122174] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 09/14/2019] [Accepted: 09/18/2019] [Indexed: 06/10/2023]
Abstract
Anaerobic fermentation and sulfate reduction (AF-SR) was firstly used for recovery of carbon sources and phosphorus from Fe-enhanced primary sludge (Fe-sludge). With FeCl3 dosage of 30 mg Fe/L, 63.0% of the chemical oxygen demand (COD) and 97.3% of the phosphorus were concentrated from sewage into Fe-sludge. Batch anaerobic fermentation tests of Fe-sludge with and without sulfate addition (AF-SR and control) were performed. The results showed that volatile fatty acid concentrations of the control and AF-SR were 211.0 and 270.2 mg COD/g volatile suspended solids, respectively. Furthermore, 33.2% (control) and 56.2% (AF-SR) of the total phosphorus in Fe-sludge was released. The recovery performances of carbon source and phosphorus were calculated based on struvite precipitation. The available carbon source of the AF-SR system was 44.5% higher than that of the control. A novel integrated wastewater and sludge treatment process based on chemically enhanced primary sedimentation and AF-SR is proposed for future application.
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Affiliation(s)
- Huan Yang
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
| | - Jianyong Liu
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China.
| | - Peishan Hu
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
| | - Lianpei Zou
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
| | - Yu-You Li
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan
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