Advancing sustainable practices: a novel sedimentation-electrocoagulation approach for efficient oil drilling waste management and water recycling

IF 3.4 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

International Journal of Environmental Science and Technology Pub Date : 2025-07-14 DOI:10.1007/s13762-025-06581-4

Mostajir A., Vafajoo L.

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引用次数: 0

Abstract

Effective management of oil drilling waste and the recycling of water from polymer-based drilling mud remain critical challenges in the oil and gas industry. This study aimed to develop an innovative and practical solution for treating drilling waste under real operational conditions. A novel approach integrating sedimentation with electrocoagulation (EC) was proposed to address these challenges. The research focused on reducing chemical oxygen demand (COD), a key indicator of polymer drilling waste pollution. Initial sedimentation achieved a notable COD reduction from 3350 to 1500 mg/L within four days. The subsequent application of the combined sedimentation-EC process further decreased COD levels, rendering the treated water suitable for reuse in operations such as reflooding. The novelty of this work lies in its kinetic analysis, which revealed a distinct two-stage reaction mechanism including; an initial coagulation phase following pseudo-first-order kinetics and a subsequent sedimentation phase governed by pseudo-second-order kinetics. These findings underscore the effectiveness of the proposed method in achieving sustainable waste management and water reuse, offering valuable insights for advancing environmental practices in oil drilling operations.

Graphical abstract

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推进可持续实践：一种新的沉积电凝方法，用于有效的石油钻井废物管理和水循环利用

石油钻井废弃物的有效管理和聚合物基钻井泥浆水的循环利用仍然是油气行业面临的关键挑战。本研究旨在开发一种在实际操作条件下处理钻井废弃物的创新和实用解决方案。为了解决这些问题，提出了一种将沉淀与电凝（EC）相结合的新方法。研究重点是降低化学需氧量（COD），这是聚合物钻井废弃物污染的关键指标。初始沉淀在4天内将COD从3350 mg/L降至1500 mg/L。随后应用沉淀- ec联合工艺进一步降低了COD水平，使处理后的水适合在再注水等操作中重复使用。这项工作的新颖之处在于它的动力学分析，揭示了一个独特的两阶段反应机制，包括；最初的混凝阶段遵循准一级动力学，随后的沉降阶段遵循准二级动力学。这些发现强调了所提出的方法在实现可持续废物管理和水再利用方面的有效性，为推进石油钻井作业的环保实践提供了有价值的见解。图形抽象

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来源期刊

International Journal of Environmental Science and Technology 环境科学-环境科学

CiteScore

5.60

自引率

6.50%

发文量

806

审稿时长

10.8 months

期刊介绍： International Journal of Environmental Science and Technology (IJEST) is an international scholarly refereed research journal which aims to promote the theory and practice of environmental science and technology, innovation, engineering and management. A broad outline of the journal''s scope includes: peer reviewed original research articles, case and technical reports, reviews and analyses papers, short communications and notes to the editor, in interdisciplinary information on the practice and status of research in environmental science and technology, both natural and man made. The main aspects of research areas include, but are not exclusive to; environmental chemistry and biology, environments pollution control and abatement technology, transport and fate of pollutants in the environment, concentrations and dispersion of wastes in air, water, and soil, point and non-point sources pollution, heavy metals and organic compounds in the environment, atmospheric pollutants and trace gases, solid and hazardous waste management; soil biodegradation and bioremediation of contaminated sites; environmental impact assessment, industrial ecology, ecological and human risk assessment; improved energy management and auditing efficiency and environmental standards and criteria.