在海产品加工废水的除氧过程中，天然提取的有机生物炭可替代商用活性炭

IF 2.8 4区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Journal of chemical technology and biotechnology Pub Date : 2024-05-11 DOI:10.1002/jctb.7664

Rajendiran Dhinesh, Satyapriyan Aruna, D. Manikandavelu, Krishnan Ravaneswaran, Subramoniapillai Sethulekshmi Kirthiga, Khalid A. Al-Ghanim, Chinnaperumal Kamaraj

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引用次数: 0

摘要

背景海产品加工业的数量急剧增加，最终将大量生化需氧量（BOD）和化学需氧量（COD）较高的废水直接排放到水生环境中。废水中的高生化需氧量和化学需氧量意味着污染程度较高，必须减少污染，以防止对生态系统造成危害。研究的主要目的是开发具有成本效益的生物炭，并利用两种天然生物质（布袋莲和甘蔗渣）去除加工废水中的生化需氧量和化学需氧量。结果通过在 600 °C、30 分钟、45 分钟和 60 分钟三种不同的停留时间下进行热解，制备出经 NaOH 处理和未经处理的布袋莲和甘蔗渣生物炭。对废水的生化需氧量和化学需氧量进行了初步分析。结果表明，在 D2（0.5 g (250 mL)-1）停留时间为 60 分钟时，在所有生物炭组中，经 NaOH 处理的布袋莲生物炭在 600 °C 高温分解 60 分钟后，BOD（86.6 ± 0.03%）和 COD（94.3 ± 0.05%）的去除率明显更高（P < 0.05）。经 NaOH 处理的布袋莲生物炭在 600 °C 下热解 60 分钟后，去除效率最高。与活性炭相比，生物炭的去除率更高。本研究可用于降低废水处理中的生化需氧量和化学需氧量。© 2024 化学工业学会（SCI）。

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Naturally derived organic biochar as an alternative to commercially activated carbon in the oxygen removal of seafood processing wastewater

BACKGROUND

The seafood processing industries are tremendously increasing in numbers which eventually discharge a large quantity of wastewater with a high range of biochemical oxygen demand (BOD) and chemical oxygen demand (COD), directly into the aquatic environment. A high level of BOD and COD in wastewater pertains to a higher level of pollution which must be reduced to prevent hazardous impacts on ecosystems. The main objective of the research aimed to develop cost-effective biochar and to remove BOD and COD from processing wastewater using two natural biomasses: water hyacinth and sugarcane bagasse.

RESULTS

NaOH-treated and non-treated biochar for both water hyacinth as well as sugarcane bagasse were prepared through the process of pyrolysis carried out at 600 °C with three different residence times of 30, 45 and 60 min. The wastewater was initially analyzed for BOD and COD levels. The results showed that among all the groups of biochars, the water hyacinth NaOH-treated biochar pyrolyzed at 600 °C for 60 min exhibited significantly (P < 0.05) higher levels of reduction in BOD (86.6 ± 0.03%) and COD (94.3 ± 0.05%) at a residence time of 60 min in D2 (0.5 g (250 mL)⁻¹). The maximum removal efficiency was observed for water hyacinth NaOH-treated biochar pyrolyzed at 600 °C for 60 min.

CONCLUSION

The removal efficiencies of organic load revealed that the treated biochars exhibited a better reduction of nutrients. The biochar efficiencies when compared with those of activated carbon exhibited a higher removal level. The present research can be used to reduce BOD and COD levels in wastewater treatments. © 2024 Society of Chemical Industry (SCI).

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来源期刊

Journal of chemical technology and biotechnology 工程技术-工程：化工

CiteScore

7.00

自引率

5.90%

发文量

268

审稿时长

1.7 months

期刊介绍： Journal of Chemical Technology and Biotechnology(JCTB) is an international, inter-disciplinary peer-reviewed journal concerned with the application of scientific discoveries and advancements in chemical and biological technology that aim towards economically and environmentally sustainable industrial processes.