Cleaner Water最新文献

筛选

英文中文

Chromium adsorption capacity from tannery wastewater on thermally activated adsorbent derived from kitchen waste biomass 餐厨垃圾生物质热活性吸附剂对制革废水中铬的吸附能力

Cleaner Water Pub Date : 2023-12-02 DOI: 10.1016/j.clwat.2023.100001

Md. Abul Hashem, Maimona Wadud Mim, Nujhat Noshin, Modinatul Maoya

{"title":"Chromium adsorption capacity from tannery wastewater on thermally activated adsorbent derived from kitchen waste biomass","authors":"Md. Abul Hashem, Maimona Wadud Mim, Nujhat Noshin, Modinatul Maoya","doi":"10.1016/j.clwat.2023.100001","DOIUrl":"https://doi.org/10.1016/j.clwat.2023.100001","url":null,"abstract":"<div><p>Environmental sustainability has gained greater acceptance as an approach to achieving the objective of a secure ecosystem with a reliable management system. The best strategy for maintaining a healthy ecosystem is waste management. In this present study, chromium (Cr) adsorption capacity from real tannery wastewater on thermally activated adsorbent, equipped from <em>Cucurbita moschata</em> (pumpkin) peel is described. The adsorbent features were investigated by implementing Fourier transform infrared (FTIR) spectroscopy, Scanning Electron Microscopy (SEM), Energy Dispersive X-ray (EDX), and pHpzc (point of zero charges) analysis. The Cr adsorption was identified by EDX analysis. SEM images were analyzed to record surface morphological modifications. The adsorbent has a pHpzc of 8.7. The thermally activated adsorbent is used to treat the wastewater, in a batch experiment with varying parameters including contact time, adsorbent dose, and pH. Under optimal circumstances, 50 mL of wastewater was mixed with 2.5 g of adsorbent, agitated for 10 min, allowed to settle, and then the Cr concentration was evaluated. The Cr level in untreated effluent and in filtrate was 3178.6 mg/L, and 12.1 mg/L, respectively. The capability of Cr adsorption and Cr removal efficiency was 3164.46 mg/g and 99.32%, correspondingly, at a pH of 7.2. The biochemical oxygen demand (BOD), chloride (Cl<sup>-</sup>), and chemical oxygen demand (COD) showed a decreasing percentage of 96.58%, 55.62%, and 95.01%. The Cr adsorption fitting for pumpkin peel adsorbent follows the Pseudo second-order (PSO) kinetic and Freundlich isotherm model. Thus, this investigation established the efficiency of using pumpkin peel as an adsorbent for Cr tanning effluent treatment.</p></div>","PeriodicalId":100257,"journal":{"name":"Cleaner Water","volume":"1 ","pages":"Article 100001"},"PeriodicalIF":0.0,"publicationDate":"2023-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2950263223000017/pdfft?md5=b47e5f52bffcf4036ca92e098e65b2fd&pid=1-s2.0-S2950263223000017-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138570673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

首页上一页