Synergistic physicochemical-microbial coupling of ultrafine oyster shell powder for enhanced sediment remediation
文献类型： 外文期刊
作者： Zhang, Shuang 1 ; Xie, Yumeng 1 ; Zeng, Chao 1 ; Fang, Jinghui 1 ; Phine Perrichon, Prescilla Yvonne Marie-Therese Jose 3 ; Lux, Rosa Helena Escobar 3 ; Tong, Ruixue 1 ; Zhang, Xiaowen 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, State Key Lab Mariculture Biobreeding & Sustainabl, Qingdao 266071, Peoples R China
2.Ocean Univ China, Key Lab Mariculture, Minist Educ, Qingdao 266003, Peoples R China
3.Inst Marine Res, N-5817 Bergen, Norway
4.Nankai Univ, Coll Environm Sci & Engn, Tianjin Key Lab Environm Remediat & Pollut Control, Key Lab Pollut Proc & Environm Criteria,Minist Edu, Tianjin 300350, Peoples R China
关键词： Sediment restoration; Bacterial community structure; Sediment quality; Benthic ecosystem; Infauna
期刊名称：MARINE POLLUTION BULLETIN （ 影响因子：4.9； 五年影响因子：5.6 ）
ISSN： 0025-326X
年卷期： 2025 年 220 卷
页码：
收录情况： SCI
摘要： Calcium carbonate skeleton fragments and powder of marine organisms are important components of marine sediments. They might play positive ecological functions in the benthic ecosystem. The present study found that the addition of ultrafine oyster shell powder (UOSP) could raise sediment pH from 7.11 to 7.78 while notably reducing H2S, Pb and Mn by 55.27 %, 83.92 % and 76.17 %, respectively. Additionally, UOSP further led to the alteration of bacterial community structure. RDA results revealed that pH significantly affected bacterial keystone species (P < 0.05), which occupied crucial positions in promoting the continuous carbon-sulfur cycle, suggesting that the addition of UOSP sustained the core function of the benthic microecosystem. The wet weights of benthic animal bivalve and polychaete increased by 18.43 % and 13.98 %, respectively, due to the improved health and sedimentary environment. The present study confirms that the natural shell powder provides significant ecological benefits to the benthic ecosystem. The application of UOSP in sediment restoration is viable.
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