Biodegradation enhancement of high concentrations formaldehyde waste gas and verification of the metabolic mechanism
The enhanced effects of formaldehyde biodegradation in a biofilm packing tower are investigated in this study. Three experimental groups were established: a blank control group, a biochar addition group, and a lanthanum addition group. The inlet gas flow rate, the inlet gas concentration, and the st...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-01-01
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| Series: | Ecotoxicology and Environmental Safety |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651323013611 |
| _version_ | 1797374209280704512 |
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| author | Junjie Ruan Jie Wang Changliang Yang Wenqing Liu Fatao He Biao Zhong |
| author_facet | Junjie Ruan Jie Wang Changliang Yang Wenqing Liu Fatao He Biao Zhong |
| author_sort | Junjie Ruan |
| collection | DOAJ |
| description | The enhanced effects of formaldehyde biodegradation in a biofilm packing tower are investigated in this study. Three experimental groups were established: a blank control group, a biochar addition group, and a lanthanum addition group. The inlet gas flow rate, the inlet gas concentration, and the structural succession characteristics of the microbial community in the tower were investigated by regular sampling. The intracellular metabolites and key enzymes of the dominant functional bacteria, Pseudomonas P1 and Methylobacterium Q1, in the tower were analyzed. The results indicated that with the biochar addition, the formaldehyde purification efficiency increased significantly from 91.67–94.67 % to 94.12 96.85 %, and the bio-elimination capacity increased with an increase in the inlet gas flow rate from 2.314 to 13.988 mg L−1h−1 to 2.697–15.051 mg L−1h−1. With the addition of lanthanum, the purification efficiency increased significantly from 90.80–93.98 % to 94.36–96.78 %, and the bio-elimination capacity increased with an increase in the inlet gas concentration from 1.099–11.284 mg L−1h−1 to 1.266–11.961 mg L−1h−1. The microbial community structure in the tower changed with system operation, and the formaldehyde degrading functional bacteria formed the dominant bacteria. It was verified that P1 and Q1 metabolized high concentrations of formaldehyde by the serine cycle and the ribulose monophosphate (RuMP) cycle. |
| first_indexed | 2024-03-08T19:01:38Z |
| format | Article |
| id | doaj.art-34ddbee26bf547aea72fd520f434fcbc |
| institution | Directory Open Access Journal |
| issn | 0147-6513 |
| language | English |
| last_indexed | 2024-03-08T19:01:38Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecotoxicology and Environmental Safety |
| spelling | doaj.art-34ddbee26bf547aea72fd520f434fcbc2023-12-28T05:14:24ZengElsevierEcotoxicology and Environmental Safety0147-65132024-01-01269115857Biodegradation enhancement of high concentrations formaldehyde waste gas and verification of the metabolic mechanismJunjie Ruan0Jie Wang1Changliang Yang2Wenqing Liu3Fatao He4Biao Zhong5Institute of International Rivers and Eco-Security, Yunnan University, Kunming 650500, PR ChinaSchool of Ecology and Environmental Science, Yunnan University, Kunming 650500, PR China; Corresponding author.School of Ecology and Environmental Science, Yunnan University, Kunming 650500, PR ChinaInstitute of International Rivers and Eco-Security, Yunnan University, Kunming 650500, PR ChinaInstitute of International Rivers and Eco-Security, Yunnan University, Kunming 650500, PR ChinaInstitute of International Rivers and Eco-Security, Yunnan University, Kunming 650500, PR ChinaThe enhanced effects of formaldehyde biodegradation in a biofilm packing tower are investigated in this study. Three experimental groups were established: a blank control group, a biochar addition group, and a lanthanum addition group. The inlet gas flow rate, the inlet gas concentration, and the structural succession characteristics of the microbial community in the tower were investigated by regular sampling. The intracellular metabolites and key enzymes of the dominant functional bacteria, Pseudomonas P1 and Methylobacterium Q1, in the tower were analyzed. The results indicated that with the biochar addition, the formaldehyde purification efficiency increased significantly from 91.67–94.67 % to 94.12 96.85 %, and the bio-elimination capacity increased with an increase in the inlet gas flow rate from 2.314 to 13.988 mg L−1h−1 to 2.697–15.051 mg L−1h−1. With the addition of lanthanum, the purification efficiency increased significantly from 90.80–93.98 % to 94.36–96.78 %, and the bio-elimination capacity increased with an increase in the inlet gas concentration from 1.099–11.284 mg L−1h−1 to 1.266–11.961 mg L−1h−1. The microbial community structure in the tower changed with system operation, and the formaldehyde degrading functional bacteria formed the dominant bacteria. It was verified that P1 and Q1 metabolized high concentrations of formaldehyde by the serine cycle and the ribulose monophosphate (RuMP) cycle.http://www.sciencedirect.com/science/article/pii/S0147651323013611FormaldehydeBiocharLanthanumMicrobial communityMetabolic pathway |
| spellingShingle | Junjie Ruan Jie Wang Changliang Yang Wenqing Liu Fatao He Biao Zhong Biodegradation enhancement of high concentrations formaldehyde waste gas and verification of the metabolic mechanism Ecotoxicology and Environmental Safety Formaldehyde Biochar Lanthanum Microbial community Metabolic pathway |
| title | Biodegradation enhancement of high concentrations formaldehyde waste gas and verification of the metabolic mechanism |
| title_full | Biodegradation enhancement of high concentrations formaldehyde waste gas and verification of the metabolic mechanism |
| title_fullStr | Biodegradation enhancement of high concentrations formaldehyde waste gas and verification of the metabolic mechanism |
| title_full_unstemmed | Biodegradation enhancement of high concentrations formaldehyde waste gas and verification of the metabolic mechanism |
| title_short | Biodegradation enhancement of high concentrations formaldehyde waste gas and verification of the metabolic mechanism |
| title_sort | biodegradation enhancement of high concentrations formaldehyde waste gas and verification of the metabolic mechanism |
| topic | Formaldehyde Biochar Lanthanum Microbial community Metabolic pathway |
| url | http://www.sciencedirect.com/science/article/pii/S0147651323013611 |
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