Application of solid-waste derived biochar from Penaeus vannamei mariculture for black-odorous water remediation

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2025-05-08 DOI:10.1016/j.jwpe.2025.107878

Wenjing Tian , Xiangyu Zhang , Wenjie Xu , Lele Wu , Zhitao Huang , Yongkun Cai , Shuangyong Zhang , Xiefa Song , Xian Li

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Abstract

Penaeus vannamei, a premium aquatic protein source, experienced rising global demand accompanied by increasing aquaculture production, yet this growth has concurrently led to the accumulation of solid aquaculture waste. Currently, the treatment of mariculture solid waste remains a pressing challenge due to technical limitations and its inherent high salinity. Coastal eutrophication poses a persistent threat to nations worldwide, necessitating long-term remediation and maintenance of black-odorous water body, with previous studies confirmed biochar's efficacy as an in-situ remediation material. This study pioneered a novel preparation method for biochar(BC) derived from Penaeus vannamei mariculture solid waste; systematically investigated the effects of feedstock mass ratio (shrimp residual feed/feces: shrimp shell = a 1:0, b 4:1, c 2:1, d 1:1) and pyrolysis temperature (500 °C, 700 °C, 900 °C) on the biochar's physicochemical properties and heavy metal removal efficiency, while comprehensively evaluated its remediation performance for coastal black-odorous water. Results demonstrated the shrimp solid-derived BC700c prepared under optimal conditions (2:1, 700 °C) exhibited significantly better physicochemical characteristics and increased significantly (P < 0.05) removal rates for aquatic heavy metals, along with promising removal rate for total nitrogen (33.02 %), total phosphorus (49.09 %), Cu(II) (51.88 %), and Cd(II) (54.41 %) in coastal black-odorous water body. Furthermore, BC700c substantially improved microbial diversity, with the Shannon index increasing by 21.64 %. It promoted the relative abundance of functionally beneficial phyla, particularly Proteobacteria and Actinobacteriota, which helpful to heavy metal and nutrient (N/P) removal. This research provided groundbreaking insights into sustainable aquaculture waste valorization and an innovative technological solution for effective black-odorous water remediation.

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凡纳滨对虾养殖固体废弃物生物炭在黑臭水体修复中的应用

凡纳滨对虾（Penaeus vannamei）是一种优质的水生蛋白质来源，随着水产养殖产量的增加，全球需求不断上升，但这种增长同时导致了固体水产养殖废物的积累。目前，海水养殖固体废物的处理由于技术限制和其固有的高盐度仍然是一个紧迫的挑战。沿海富营养化对世界各国构成了持续的威胁，需要对黑臭水体进行长期的修复和维护，以往的研究证实了生物炭作为原位修复材料的有效性。本研究开创了以南美对虾养殖固体废弃物为原料制备生物炭（BC）的新方法；系统考察了原料质量比（虾残料/粪：虾壳= a 1:0, b 4:1, c 2:1, d 1:1）和热解温度（500℃、700℃、900℃）对生物炭理化性质和重金属去除效率的影响，并综合评价了其对沿海黑臭水体的修复效果。结果表明，在最佳条件（2:1,700°C）下制备的虾类固体源BC700c具有较好的理化特性，显著提高(P <；沿海黑臭水体中总氮（33.02%）、总磷（49.09%）、Cu(II)（51.88%）和Cd(II)（54.41%）的去除率均较好。此外，BC700c显著改善了微生物多样性，Shannon指数提高了21.64%。它促进了功能有益门的相对丰度，特别是变形菌门和放线菌门，有助于重金属和营养物质（N/P）的去除。本研究为水产养殖废弃物的可持续增值提供了开创性的见解，并为有效的黑臭水修复提供了创新的技术解决方案。

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来源期刊

Journal of water process engineering Biochemistry, Genetics and Molecular Biology-Biotechnology

CiteScore

10.70

自引率

8.60%

发文量

846

审稿时长

24 days

期刊介绍： The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies