Recent development in the treatment of oily sludge from petroleum industry: A review

Bioremediation of soils contaminated with polycyclic aromatic hydrocarbons, petroleum, pesticides, chlorophenols and heavy metals by composting: Applications, microbes and future research needs

Demulsification techniques of water-in-oil and oil-in-water emulsions in petroleum industry

The global use of petroleum hydrocarbons for energy and raw materials in various applications has increased with extensive release of a wide variety of contaminants into the environment, affecting soil, surface water and groundwater. The effect results to numerous health, ecological and environmental issues. However, treatment of contamination and pollution caused by petroleum hydrocarbons is a huge and laborious work. It involves several in situ or ex situ treatments comprising containment, separation and destruction which include biological, chemical, physico-chemical, thermal and heat, electric and electromagnetic, acoustic and ultrasonic treatment methods. These treatment methods involve several other techniques and strategies as listed in this review. The health risks pose by petroleum hydrocarbon pollution have driven scientists to research, develop and implement risk-based remediation strategies for restoration and reclamation of affected environments. To select the best treatment option for remediation, it is important to comprehend the nature, composition, properties, sources of pollution, type of environment, fate, transport and distribution of the pollutants, mechanism of degradation, interaction and relationships with microorganisms, the intrinsic and extrinsic factors affecting remediation. It helps to evaluate and predict the chemical behaviour of the pollutants with the short and long-term effects and mitigate the effects of pollution and limit exposure to the pollutants. Despite the available remediation options for petroleum hydrocarbon management and removal, sufficient and complete remediation can be implemented by adoption of proper approach derived from risk-based management procedure that can be practical, scientifically defensible, widely adapted, sustainable, non-invasive, eco-friendly and cost-efficient. This paper provides an overview of the various remediation and treatment technologies derived from risk-based approaches that are used for isolation, containment, separation, restoration reclamation and remediation of soil, sediments, surface water and groundwater contaminated by petroleum hydrocarbons and organic compounds.

Remediation of soil and water contaminated with petroleum hydrocarbon: A review

A comprehensive guide of remediation technologies for oil contaminated soil — Present works and future directions

Assessment of mine post-closure strategies by integrating evidential reasoning and fuzzy cognitive maps: Toward sustainable mining policy

Drinking water management strategies for distribution networks: An integrated performance assessment framework.

Abstract This research aims to evaluate the effect of ultrasonic processing parameters (power and sonication time), emulsion characteristics (water salinity and pH) and their interaction on oil-in-water emulsion stability for Cold Lake Blend (CLB) crude oil. Response surface methodology was used to design experimental runs, in which the parameters were investigated at five levels. Emulsion stability was evaluated by measuring creaming index, emulsion turbidity and microscopic image analysis. The effect of crude oil condition (fresh and weathered) on the emulsion stability was also investigated at the optimum sonication parameters and emulsion characteristics. The optimum condition was found at a power level of 76–80 W, sonication time of 16 mins, water salinity of 15 g/L NaCl, and pH of 8.3. Increasing sonication time beyond the optimum value had adverse effect on the emulsion stability. High water salinity (> 20 g/L NaCl) and pH (> 9) decreased the emulsion stability. These adverse effects intensified at higher power levels (> 80–87 W) and longer sonication times (> 16 mins). Interaction of parameters showed that the required energy to generate stable emulsion was within 60 − 70 kJ. Emulsion with fresh crude oil was more stable than those generated with the weathered oil.

Effect of ultrasonic homogenization on crude oil-water emulsion stability

School of Engineering, University of Northern British Columbia, Prince George, BC, Canada, Ecosystem Science, Fisheries and Oceans Canada, Ottawa, ON, Canada, Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Memorial University of Newfoundland, St. John’s, NL, Canada, School of Environmental Science and Engineering, Qingdao University, Qingdao, China, School of Environmental Science and Engineering, Shandong University, Qingdao, China

https://www.frontiersin.org/articles/10.3389/fenvs.2023.1161030/pdf

Editorial: Waste management of petroleum hydrocarbons in marine environment

Extended Abstract One-sixth of the world population suffers from the lack of clean water supply [1]. Water insecurity is defined as inadequate or inequitable access to clean, safe and affordable water for drinking, cooking, as well as sanitation and hygiene [2]. In Canada, the National Assessment of First Nations Water and Wastewater Systems (2011) shows that 73% of water systems were at medium to high levels of risk because the facilities could not meet the design protocols or substandard water quality [3]. In British Columbia (BC), small systems are defined as the water system that serves 500 or less people. A water system that serves 25 or less people (less than 5 household/connection) is called a microsystem. As of January 2021, 57 long-term drinking water advisories were still in effect in 39 water systems with 5 or more connections in First Nations communities [4]. As per the data accessed in February 2021[5,6], Fraser Health region and Northern health region have 9 and 126 different types of ongoing drinking water advisories, respectively, such as Boil Water Advisory (BWA), Do Not Consume (DNC), Water Quality Advisory (WQA). About 22% of those advisories are due to coliforms, which can be solved easily with common disinfection processes (e.g., hypochlorite solution), and 61% of advisories are due to lack of assessment data. Water quality assessments commonly involve the evaluation of water quality data, in terms of different parameters according to water quality guidelines and standards. All of these specifics clearly indicate the need of drinking water quality data acquisition and analysis, and especially for micro-systems since those systems are out of funding and assistance from government. Water quality data of microsystems from participating communities were acquired and analyzed using correlation and principal component analysis. The results show that the most critical water quality issue is related to Manganese (Mn) in drinking water. Since BWA advisory is the most common advisory to circulate for making people aware of potential water contamination, boiling makes Mn contamination worse; DNC advisory is issued in case of such contamination. The results will help to further study and develop a fit-for-purpose solution which needs to be cost-effective as well, to help residents relying on microsystems to deal with Mn problem specifically. Therefore, such solution can help address similar Mn contamination problems in other regions across the globe as well.

/pdf/challenges-and-critical-water-quality-issues-in-micro-water-r6r788idvl.pdf

Guangji Hu

Papers

Assessment of mine post-closure strategies by integrating evidential reasoning and fuzzy cognitive maps: Toward sustainable mining policy

Drinking water management strategies for distribution networks: An integrated performance assessment framework.

Effect of ultrasonic homogenization on crude oil-water emulsion stability

Editorial: Waste management of petroleum hydrocarbons in marine environment

Challenges and Critical Water Quality Issues in Micro Water Systems inBritish Columbia, Canada