{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,30]],"date-time":"2026-06-30T06:54:55Z","timestamp":1782802495962,"version":"3.54.5"},"reference-count":26,"publisher":"IWA Publishing","issue":"1","content-domain":{"domain":["iwaponline.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2016,1,8]]},"abstract":"<jats:p>Agroindustrial wastes (rice husk, exhausted bark acacia, and tobacco dust) and foundry sands from the iron foundry industry were employed as a support source for photocatalysts. TiCl4 was used as the titanium precursor in the preparation of the supported photocatalysts. The solids were characterized by scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX), diffuse reflectance spectroscopy over the ultraviolet range (DRS-UV), X-ray diffraction (XRD), small-angle X-ray scattering (SAXS), nitrogen adsorption\u2013desorption at \u2212196 \u00b0C and zeta potential (ZP) measurements. The systems were evaluated for the photodegradation of rhodamine B (RhB). Among the tested systems, the highest percentage of dye degradation was reached by the catalyst prepared with foundry sand supports, with values of 65% under ultraviolet and 39% under visible radiation, whereas under the same conditions, the catalyst prepared with rice husk showed the best photocatalytic performance among the samples prepared with agroindustrial wastes with values of 43% under ultraviolet and 38% under visible radiation. Strong Spearman's correlations among the photocatalytic activity, the zeta potential (\u03b6p &amp;gt; 0.900) and the band gap energy (\u03b6p &amp;gt; 0.895) were observed. Exploratory tests with tap water samples revealed that the system may be sensitive to other analytes present in these environmental samples.<\/jats:p>","DOI":"10.2166\/wst.2015.263","type":"journal-article","created":{"date-parts":[[2016,1,11]],"date-time":"2016-01-11T12:53:07Z","timestamp":1452516787000},"page":"28-38","update-policy":"https:\/\/doi.org\/10.2166\/iwapcrossmarkpolicypage","source":"Crossref","is-referenced-by-count":32,"title":["Industrial and agroindustrial wastes: an echotechnological approach to the production of supported photocatalysts"],"prefix":"10.2166","volume":"73","author":[{"given":"William Leonardo","family":"da Silva","sequence":"first","affiliation":[{"name":"Departamento de Engenharia Qu\u00edmica, Universidade Federal do Rio Grande do Sul, Rua Eng. 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