Biowaste is an important sustainable source of adsorption activities for many harmful materials, such as hazardous metals/elements and organics. It has many advantages over the conventional materials due to its low cost, abundance, affective adsorption capacity, and recyclability. Dyes are mainly organics with different structures and molecular weights; they are harmful to the environment and organisms if they were not efficiently treated before releasing. However, there is a massive number of dyes that classified into different categories, and there are different adsorbents that were reported for dyes adsorption. Among these dyes, methyl dyes with their different colors are very common in researches because of their availability and easiness in the study. Also, there are various biosorbents that were used, prepared, or grafted from different parts of plants and animals. In this review, we are focusing on the use of plant parts, such as the leaf, peel, etc. in dyes removal. Researches numbers in this field are increasing yearly (based on Scopus database information), which indicates the importance of this type of material; though, we selected a group of articles to focus on to clarify the idea in summary. Different adsorption capacities, operation conditions, and applying forms were studied, and the reported results showed that biomass adsorbents are so influential and recyclable. The adsorption kinetics and isotherms were illustrated and tabled for selected studies to show the adsorbents behaviors and adsorption mechanisms.

生物废物是许多有害物质（如有害金属/元素和有机物）吸附活动的重要可持续来源。由于其低成本，丰富，有效的吸附能力和可回收性，与常规材料相比具有许多优势。染料主要是具有不同结构和分子量的有机物。如果在释放前未进行有效处理，它们会对环境和生物有害。然而，有大量的染料被分类为不同的类别，并且据报道有不同的吸附剂用于染料吸附。在这些染料中，由于其可用性和易用性，具有不同颜色的甲基染料在研究中非常普遍。此外，还有各种各样的生物吸附剂被使用，制备，或从动植物的不同部位移植而成。在这篇综述中，我们集中于植物部分的使用，例如叶，果皮等在染料去除中的使用。该领域的研究数量逐年增加（基于Scopus数据库的信息），这表明此类材料的重要性。不过，我们选择了一组文章来重点说明，以概括地阐明这一想法。研究了不同的吸附能力，操作条件和应用形式，报道的结果表明生物质吸附剂具有很大的影响力和可回收性。说明并列出了吸附动力学和等温线，以供选择研究，以显示吸附剂的行为和吸附机理。该领域的研究数量逐年增加（基于Scopus数据库的信息），这表明此类材料的重要性。不过，我们选择了一组文章来重点说明，以概括地阐明这一想法。研究了不同的吸附能力，操作条件和应用形式，报道的结果表明生物质吸附剂具有很大的影响力和可回收性。说明并列出了吸附动力学和等温线，以供选择研究，以显示吸附剂的行为和吸附机理。该领域的研究数量逐年增加（基于Scopus数据库的信息），这表明此类材料的重要性。不过，我们选择了一组文章来重点说明，以概括地阐明这一想法。研究了不同的吸附能力，操作条件和应用形式，报告的结果表明生物质吸附剂具有很大的影响力和可回收性。说明并列出了吸附动力学和等温线，以供选择研究，以显示吸附剂的行为和吸附机理。研究和应用形式，报道的结果表明，生物质吸附剂具有很大的影响力和可回收性。说明并列出了吸附动力学和等温线，以供选择研究，以显示吸附剂的行为和吸附机理。研究和应用形式，报道的结果表明，生物质吸附剂具有很大的影响力和可回收性。说明并列出了吸附动力学和等温线，以供选择研究，以显示吸附剂的行为和吸附机理。