Abstract
Sustained release technology is a class of technology characterized by slowly-releasing specific active substances into a target medium to keep a certain concentration in the system within valid time. As a new of type technology, it has been extensively applied to medicine, chemical engineering, agriculture, environmental protection, etc. The principles and classification of sustained release technologies, as well as typical preparation methods of sustained release agents, were summarized in this paper; by introducing applied research progress of sustained release technologies into environmental fields like rainwater purification, sewage/drinking water treatment, and soil and atmosphere remediation, application features of these sustained release technologies were evaluated, and their application prospect in environmental remediation, especially in water treatment, was predicted.
Highlights
Sustained release technology (SRT) is a technology taking specific measures to slow down the release of specific active substances (SASs) within a certain time so that designed concentration of
It is mainly used to improve compliance of drug administration, reduce toxic and side effects and the stimulation of gastrointestinal tract, improve bioavailability, and decrease total drug dose; in the chemical field, it operates mainly in the form of controlled-release sustained release agent, usually as a constituent in treating fluids like aqueous rust preventive, anti-rust oil, mildew preventive, and stabilizer [2]; in the agricultural field, it is taken as a slow release agent for pesticides in the microcapsule form so that capsule-core pesticides will not be influenced by external temperature, oxygen, ultraviolet ray, etc. [3,4]
This review aims to provide a reference for the actual application of sustained release technology to environmental remediation
Summary
Sustained release technology (SRT) is a technology taking specific measures to slow down the release of specific active substances (SASs) within a certain time so that designed concentration of SASs can be kept within the system [1]. This technology can be called release-control technology; it releases at a constant preset speed within the preset time so that SASs are kept within the effective concentration range.
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