Naphthalene, simplest polycyclic aromatic hydrocarbon (PAH), is extensively liberated in aqueous systems through wastewaters of various industries. The present study proposes the removal of naphthalene from aqueous solutions inexpensively and efficiently using high quality activated carbon synthesized from waste material, sawdust. The Brunauer–Emmett–Teller(BET) $N_2$ surface area for sawdust activated carbon (SDAC) was over 1400 m²/g. The influence of contact time, dosage of prepared activated carbon, temperature, and pH for naphthalene adsorption has been investigated. Results were evaluated using Langmuir and Freundlich equations. Based on obtained isotherm parameters, Freundlich isotherm was found to be more favourable for naphthalene adsorption. Results revealed efficient adsorption of naphthalene with sawdust activated carbon under given conditions. Equilibrium time for the adsorption on SDAC was found to be 90 min. Samples were analysed using UV–Visible spectrophotometry. The study furnishes high quality, easily acquirable, and cheap adsorbent which is highly effective for the treatment of polycyclic aromatic hydrocarbons.

萘是最简单的多环芳烃（PAH），可通过各种行业的废水在水系统中大量释放。本研究提出使用由废料锯末合成的高质量活性炭，廉价而有效地从水溶液中除去萘。布鲁诺·埃梅特·特勒（BET）${ñ}_2$锯末活性炭（SDAC）的表面积超过1400 m ² / g。研究了接触时间，制备的活性炭用量，温度和pH值对萘吸附的影响。使用Langmuir和Freundlich方程评估结果。根据获得的等温线参数，发现Freundlich等温线对萘吸附更有利。结果表明，在给定条件下，锯末活性炭可有效吸附萘。发现在SDAC上吸附的平衡时间为90分钟。使用紫外可见分光光度法分析样品。该研究提供了高质量，易于获得且廉价的吸附剂，对多环芳烃的处理非常有效。