In most studies, the effect of pH, initial bromate concentration, contact time, temperature, adsorbent dose, mixing speed, and coexisting ions was investigated to get optimum bromate removal. The respective adsorbent samples are noted to have varying specific surface area, pore size, and surface morphology. Some of the adsorbent materials used included activated carbon, both unmodified and modified. The adsorption process is noted to be the most common and widely studied technique. In this review paper, we have presented and summarized findings from the respective recent work on bromate removal techniques and have also discussed the effect of various process variables on bromate removal efficiency. Considering its carcinogenic and mutagenic threat toward human health, several recent research studies have investigated different processes for efficient bromate removal from the aqueous phase under a varying set of conditions and also report the optimum process variables. Bromate species is typically formed during disinfection–ozonation of bromide containing water. Recently, bromate (BrO3–) presence in the drinking water sources and its health-related concerns (e.g., carcinogenic) has initiated a lot of attention both within the regulatory bodies across the globe (such as WHO, US EPA, EU, etc.) and also within the scholarly community that look for efficient bromate removal techniques to meet the desired bromate water quality standards.
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